The Potential of Solar Adsorption Air-Conditioning in Saudi Arabia: A Simulation Study

Size: px
Start display at page:

Download "The Potential of Solar Adsorption Air-Conditioning in Saudi Arabia: A Simulation Study"

Transcription

1 The Potential of Solar Adsorption Air-Conditioning in Saudi Arabia: A Simulation Study Ahmed Al-Mogbel 1, Patrick Ruch 2, Abdulrahman Al-Rihaili 1, Saleh Al-Ajlan 1, Paul Gantenbein 3, Andreas Witzig 4, Bruno Michel 2 1 King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia Phone: , Fax: aalmogbel@kacst.edu.sa Internet: 2 IBM Research Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland 3 Institut für Solartechnik SPF, Oberseestrasse 10, CH-8640 Rapperswil, Switzerland 4 Vela Solaris AG, Stadthausstrasse 125, CH-7400 Winterthur, Switzerland 1. Introduction The electricity consumption for air-conditioning in Saudi Arabia which is dominated by hot desert climate exceeds 70% of the total electricity consumption during the summer months 1 3. The installed generating capacity is required to double in the timeframe in order to meet the growth in electricity demand of 4-8% per year 4. Therefore, there is a strong demand to implement cooling solutions with minimal electricity consumption, in particular during peak hours in the summer season. While evaporative cooling is highly effective in arid climates, the scarcity of fresh water supplies in Saudi Arabia prohibits excessive use of water for cooling. As an alternative, solar air-conditioning provides a means to utilize the high solar irradiance 5 in Saudi Arabia to mitigate electrical loads associated with peak cooling demand. Solid sorption (adsorption) cooling has the greatest potential benefit for electricity reduction due to the absence of internal moving parts, leading to a high electrical coefficient of performance (COP el ). Also, compared to liquid sorption (absorption) cooling, adsorption chillers can be driven at relatively low temperatures, typically 60 C or above, and can therefore be combined with low-cost flat plate collectors. However, the low thermal coefficient of performance (COP th ) of these systems leads to high recooling needs. Further, the performance in terms of COP th, COP el and cooling power is highly dependent on the temperature level for heat rejection, which in Saudi Arabia tends to be significantly higher than the nominal middle temperature of commercial adsorption chillers. Therefore, there is a demand for studies of the feasibility of implementing solar-driven adsorption chillers to domestic air-conditioning in Saudi Arabia. 256

2 In this contribution, the solar-driven adsorption cooling systems were studied with the Polysun software package. The effects of location, recooler (evaporative vs. dry) and adsorption chiller type (silica gel vs. zeolite adsorbent) on COP th and COP el were investigated and compared to the performance of a compression cooling system. 2. Methodology Simulations were carried out using Polysun 5.9 (Vela Solaris, Switzerland) using statistical climate data based on the Meteonorm library (Meteotest, Switzerland). The system diagram is shown in Figure 1. Figure 1: Solar cooling system diagram implemented in Polysun. The efficiency of the flat plate collector was described by a second order polynomial (x) = c 0 c 1 x c 2 G k x 2 with c 0 = 0.8, c 1 = 3.3 W/(m 2 K) and c 2 = 0.01 W/(m 2 K 2 ) and the total irradiated solar energy G k. The tilt angle was near horizontal for all locations. The net collector area was set to 150 m 2 (net area 135 m 2 ), equal to the footprint of the building. A hot water storage of 8 m 3 was implemented. The two adsorption chillers simulated were commercially available silica gel water and zeolite water chillers 6,7. For the simulations involving a dry recooler unit, an electrical COP of 11 was assumed. Simulations were also carried out using an evaporative cooling tower with a design approach temperature of 2 C and an electrical COP of 50. The modeled building was a single-floor house with a heat loss coefficient of 0.5 W/(m 2 K) and an internal heat gain of 8.6 W/m 2 due to people, lighting and equipment. The cooling set point temperature was defined as 24 C and the minimum driving temperature was set to 55 C. A constant flow rate of 40 L/(m 2 hour) was selected for the collector array while the remaining flow rates 257

3 were set according to the chiller requirements 6,7. The performance of the solar cooling system was compared to that of a conventional grid-connected compression cooling scheme in which the nominal COP el of the compressor was 4.3. The four Saudi locations studied included Riyadh, Jeddah, Dammam and Abha. The thermal COP of the simulated adsorption chiller systems was calculated as the ratio of cooling yield Q th,cool to thermal energy Q th,drive delivered to the chiller from the hot water storage tank, COP th = Q th,cool /Q th,drive. The electrical COP was evaluated as the ratio of the cooling yield to the sum of electrical energy consumed by the auxiliary components including the fan coil, recooler, pumps and chiller, COP el = Q th, cool /(Q el,fan + Q el,recool + Q el,pump + Q el,chill ). 3. Results and Discussion The simulated annual specific cooling load of the building in Riyadh was 194 kwh/m 2, which compares well with the reported value of 199 kwh/m 2 for an insulated house 8. The highest cooling demand was found in the week of August 8 to 15. The ambient temperature regularly exceeded 40 C and the maximum global irradiance approached 1 kw/m 2 during this time. The thermal yield of the collector array was maximal at noon at around 80 kw while the cooling yield peaked after sunset at around 8.2 kw to meet demand. The need for sufficient hot water storage volume to serve as a daily buffer is evident from this result. The cooling water inlet temperature to the adsorption chiller varied strongly during this timeframe, typically between 35 C and 45 C, which is expected to have a strong influence on the COP. The building temperature was maintained at C throughout the entire simulation and the tank was never fully depleted. The power consumption for all simulated scenarios and locations was categorized according to the fan coil, recooler, pumps and chiller electricity consumption (Figure 2). The electricity consumption of the solar-driven adsorption cooling system was found to be lower than the compression cooling reference system in all cases. While the chiller itself accounted for 70-80% of the overall power consumption in the compression cooling scenario, the dominating component in the adsorption cooling scenarios was the recooler which accounted between ca. 70% (evaporative recooler) and 80% (dry recooler) of the total power consumption. The efficacy of evaporative cooling was highly dependent on location. For the silica gel water adsorption chiller In Riyadh, the simulated yearly power consumption was 7991 kwh for the dry recooler system and only 3508 kwh for the evaporative recooler system. The difference was less pronounced in Jeddah which is exposed to higher humidity. Here, the simulated yearly power consumption was 7626 kwh (dry recooler) and 4679 kwh (evaporative recooler). As expected, the cooling scenario in 258

4 Dammam is similar to that of Riyadh in terms of cooling demand. Abha exhibited the lowest cooling demand and therefore power consumption due to its mild climate. Figure 2: Simulated monthly component power consumption in four Saudi locations for the silica gel water adsorption chiller and comparison with a grid-connected compression cooled system. The monthly thermal and electrical COPs of the simulated adsorption cooling systems are plotted in Figure 3. The thermal COP of the simulated adsorption 259

5 cooling scenarios fell well below the nominal value of 0.6, which is mainly attributed to the elevated ambient temperature. In particular during the summer months, COP th dropped to as low as 0.30 in Riyadh for the silica gel water chiller equipped with a dry recooler. The combination of dry recooler with the zeolite water chiller resulted in a higher minimum COP th of 0.38 during the summer months due to the better performance of this system at higher heat rejection temperatures. For either system, the COP th tended to improve when combined with the evaporative recooler. For the silica gel water chiller, the average COP th in Riyadh over the entire year was 0.35 for dry recooling compared to 0.43 for evaporative recooling. For the zeolite water chiller, the yearly COP th was found to be 0.40 (dry recooling) and 0.47 (evaporative recooling), respectivey. The electrical COP was also highly dependent on the location and recooler type. In Figure 3: Simulated electrical and thermal COPs for the silica gel water and zeolite water chillers employing dry (a, c) and evaporative (b, d) recooling for four Saudi locations in comparison with grid-connected vapor compression cooling. Riyadh, the silica gel water chiller exhibited a yearly COP el of 3.55 (dry recooling) and 8.36 (evaporative recooling), respectively, while the zeolite water chiller was 260

6 characterized by yearly COP el values of 3.94 (dry recooling) and 8.84 (evaporative recooling). Compared to the vapor compression reference case with COP el values of 3.11 (Riyadh, dry recooling) and 3.91 (Riyadh, wet recooling), these results suggests that solar-driven cooling using current adsorption chiller technology and dry recooling offers only a marginal advantage over vapor compression cooling in Saudi Arabia in terms of electricity consumption. With evaporative recooling, however, a yearly reduction in electricity consumption of up to 58% was found. 4. Conclusions Simulations suggest that solar adsorption cooling can provide a means to considerably reduce the electricity needed for air-conditioning in Saudi Arabia. However, currently available adsorption chillers are not optimized for the high ambient temperatures encountered in many highly populated locations such as Riyadh. Therefore, the simulated performance of the chillers was significantly worse than under nominal operating conditions and evaporative recooling had to be employed in order to obtain a noteworthy advantage over vapor compression cooling. In order to minimize water consumption and improve the overall system efficiency, it is recommended to study the use of hybrid recoolers and novel adsorption systems adapted to high heat rejection temperatures. 5. References 1. F. Al-Sulaiman & S.M. Zubair, A survey of energy consumption and failure patterns of residential air-conditioning units in eastern Saudi Arabia. Energy 5442, (1996) 2. All sunshine makes a desert... Saudi on the solar drive, Asian Solar (April/May 2010) 3. A. Heuzeroth & K. Ishida, A closer look at solar assisted cooling, Climate Control Middle East (2011), available online at 4. Saudi Arabia Power Report Q Business Monitor International (2012) 5. W. Alnaser et al., First solar radiation atlas for the Arab world. Renewable Energy 29, (2004). 6. SolCool final report (in French), SFOE project # (2011) 7. Invensor GmbH, (2013) 8. S. Said & A. Al-Hammad, Energy conservation measures on residential buildings in Saudi Arabia. International Journal of Energy Research 17, (1993) 261

ALONE. small scale solar cooling device Project No TREN FP7EN 218952. Project No TREN/FP7EN/218952 ALONE. small scale solar cooling device

ALONE. small scale solar cooling device Project No TREN FP7EN 218952. Project No TREN/FP7EN/218952 ALONE. small scale solar cooling device Project No TREN/FP7EN/218952 ALONE small scale solar cooling device Collaborative Project Small or Medium-scale Focused Research Project DELIVERABLE D5.2 Start date of the project: October 2008, Duration:

More information

An Overview of Solar Assisted Air-Conditioning System Application in Small Office Buildings in Malaysia

An Overview of Solar Assisted Air-Conditioning System Application in Small Office Buildings in Malaysia An Overview of Solar Assisted Air-Conditioning System Application in Small Office Buildings in Malaysia LIM CHIN HAW 1 *, KAMARUZZAMAN SOPIAN 2, YUSOF SULAIMAN 3 Solar Energy Research Institute, University

More information

Simulation of a small size solar assisted adsorption air conditioning system for residential applications

Simulation of a small size solar assisted adsorption air conditioning system for residential applications Heat Powered Cycles Conference 2009 2009 Simulation of a small size solar assisted adsorption air conditioning system for residential applications Salvatore Vasta, Andrea Frazzica, Gaetano Maggio, Alessio

More information

New technical solutions for energy efficient buildings

New technical solutions for energy efficient buildings - New technical solutions for energy efficient buildings State of the Art Report New technologies for heat pumps Authors: Heimo Staller, Angelika Tisch, IFZ Oct. 2010 Background Heat pumps are machines

More information

Small-Scale Solar Heating and Cooling Systems

Small-Scale Solar Heating and Cooling Systems Contact Austria: AEE INTEC (www.aee-intec.at) France: Tecsol (www.tecsol.fr) Germany: Fraunhofer ISE (www.ise.fraunhofer.de) Greece: CRES (www.cres.gr) Italy: EURAC (www.eurac.edu) University of Bergamo

More information

Sustainable water heating solutions through solar systems

Sustainable water heating solutions through solar systems VIESMANN Sustainable water heating solutions through solar systems Murat Aydemir Managing Director Viessmann Middle East FZE Viessmann is a Registered Provider with The American Institute of Architects

More information

Technologies and Perspectives of Solar Cooling Systems

Technologies and Perspectives of Solar Cooling Systems Technologies and Perspectives of Solar Cooling Systems AHK Conference Sydney, Australia, 24 th March 2014 www.efficiency-from-germany.info Dr. Uli Jakob Solem Consulting / Green Chiller Association for

More information

Solar Thermal TECHNOLOGY. Eric Buchanan Renewable Energy Scientist West Central Research and Outreach Center Wcroc.cfans.umn.edu

Solar Thermal TECHNOLOGY. Eric Buchanan Renewable Energy Scientist West Central Research and Outreach Center Wcroc.cfans.umn.edu Solar Thermal TECHNOLOGY Eric Buchanan Renewable Energy Scientist West Central Research and Outreach Center Wcroc.cfans.umn.edu Solar Energy History Solar Thermal 700 BC Chinese use burning mirrors 1760

More information

SONNENKLIMA package solution description

SONNENKLIMA package solution description SONNENKLIMA package solution description Edited by: Daniel MUGNIER, Romain SIRE Version 1 SONNENKLIMA Perpignan, October 2009 Table of Contents 1 Introduction... 4 1.1 Increasing interest in air conditioning...

More information

Vicot Solar Air Conditioning. V i c o t A i r C o n d i t i o n i n g C o., l t d Tel: 86-531-8235 5576 Fax: 86-531-82357911 Http://www.vicot.com.

Vicot Solar Air Conditioning. V i c o t A i r C o n d i t i o n i n g C o., l t d Tel: 86-531-8235 5576 Fax: 86-531-82357911 Http://www.vicot.com. Vicot Solar Air Conditioning V i c o t A i r C o n d i t i o n i n g C o., l t d Tel: 86-531-8235 5576 Fax: 86-531-82357911 Http://www.vicot.com.cn Cooling, heating, and domestic hot water. Return on investment

More information

SOLEL SUNCOOLER SOLAR-POWERED AIR-CONDITIONING / HEATING SYSTEM

SOLEL SUNCOOLER SOLAR-POWERED AIR-CONDITIONING / HEATING SYSTEM SOLEL SUNCOOLER SOLAR-POWERED AIR-CONDITIONING / HEATING SYSTEM organization / project coordinator (address, telephone, email) Solel Solar Systems Ltd./ Mr. Avi Brenmiller 3, Hac'shara St, Industrial Zone

More information

Analysis of data centre cooling energy efficiency

Analysis of data centre cooling energy efficiency Analysis of data centre cooling energy efficiency An analysis of the distribution of energy overheads in the data centre and the relationship between economiser hours and chiller efficiency Liam Newcombe

More information

New technical solutions for energy efficient buildings. State of the Art Report Solar heating & cooling

New technical solutions for energy efficient buildings. State of the Art Report Solar heating & cooling New technical solutions for energy efficient buildings State of the Art Report Solar heating & cooling Authors: Martin Treberspurg, Mariam Djalili, BOKU Heimo Staller, IFZ July 2011 Background The European

More information

Life Cycle Assessment (LCA) of solar cooling systems

Life Cycle Assessment (LCA) of solar cooling systems IEA ECES and IEA SHC joint workshop» - Solar Heating and Cooling and Energy Storage«November 8, 2011, University Rosenheim, Germany Life Cycle Assessment (LCA) of solar cooling systems Marco Beccali Dipartimento

More information

FACTSHEET Assessing the Feasibility of Using Solar-Thermal Systems for Your Agricultural or Agri-Food Operation

FACTSHEET Assessing the Feasibility of Using Solar-Thermal Systems for Your Agricultural or Agri-Food Operation FACTSHEET Assessing the Feasibility of Using Solar-Thermal Systems for Your Agricultural or Agri-Food Operation Solar-thermal systems collect the sun's energy and convert it into heat. This energy can

More information

Gas Absorption Heat Pumps. Future proofing your heating and hot water

Gas Absorption Heat Pumps. Future proofing your heating and hot water Gas Absorption Heat Pumps Future proofing your heating and hot water Gas Absorption Heat Pumps 1 Contents Gas Absorption Heat Pumps (GAHPs) The heating solution What is a Gas Absorption Heat Pump? How

More information

New absorption chillers for high efficient solar cooling systems

New absorption chillers for high efficient solar cooling systems New absorption chillers for high efficient solar cooling systems Dipl.-Ing. Stefan Petersen & Dipl.-Ing. Jan Albers Foto: TU Berlin Foto: TU Berlin 1. General Technology Overview 2. Operating data 3. Solar

More information

Solar Cooling Position Paper

Solar Cooling Position Paper Task 38 Solar Air-Conditioning and Refrigeration Solar Cooling Position Paper Solar Cooling Position Paper October 2011 page 1 Table of contents Table of contents... 2 1. Introduction and background...

More information

Solar Thermal Systems

Solar Thermal Systems Solar Thermal Systems Design and Applications in the UAE Murat Aydemir Viessmann Middle East FZE General Manager (M.Sc. Mech.Eng., ASHRAE) Dubai Knowledge Village Congress Centre, Dubai 20.4.2009 Viessmann

More information

Optimization of Water - Cooled Chiller Cooling Tower Combinations

Optimization of Water - Cooled Chiller Cooling Tower Combinations Optimization of Water - Cooled Chiller Cooling Tower Combinations by: James W. Furlong & Frank T. Morrison Baltimore Aircoil Company The warm water leaving the chilled water coils is pumped to the evaporator

More information

Federation of European Heating, Ventilation and Air-conditioning Associations

Federation of European Heating, Ventilation and Air-conditioning Associations Federation of European Heating, Ventilation and Air-conditioning Associations Address: Rue Washington 40 1050 Brussels Belgium www.rehva.eu info@rehva.eu Tel: +32 2 514 11 71 Fax: +32 2 512 90 62 REHVA

More information

PRODUCTION OF DOMESTIC HOT WATER WITH SOLAR THERMAL COLLECTORS IN NORTH-EUROPEAN APARTMENT BUILDINGS

PRODUCTION OF DOMESTIC HOT WATER WITH SOLAR THERMAL COLLECTORS IN NORTH-EUROPEAN APARTMENT BUILDINGS International Journal of Mechanical Engineering and Technology (IJMET) Volume 7, Issue 1, Jan-Feb 2016, pp. 58-66, Article ID: IJMET_07_01_007 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=7&itype=1

More information

Rittal White Paper 508: Economized Data Center Cooling Defining Methods & Implementation Practices By: Daniel Kennedy

Rittal White Paper 508: Economized Data Center Cooling Defining Methods & Implementation Practices By: Daniel Kennedy Rittal White Paper 508: Economized Data Center Cooling Defining Methods & Implementation Practices By: Daniel Kennedy Executive Summary Data center owners and operators are in constant pursuit of methods

More information

Wet Bulb Temperature and Its Impact on Building Performance

Wet Bulb Temperature and Its Impact on Building Performance Wet Bulb Temperature and Its Impact on Building Performance By: Kurmit Rockwell, PE, CEM, LEED AP and Justin Lee, PE, LEED, AP BD+C Energy Solution Services, AtSite, Inc. 1 What is Wet Bulb Temperature?

More information

1 Overview of applications and system configurations

1 Overview of applications and system configurations Content 1 Overview of applications and system configurations... 1 1.1 Solar thermal technology... 1 1.2 General Heating (GH)... 2 1.2.1 Heating of large buildings... 3 1.2.2 District heating and Local

More information

Solar-powered chilling: Technical and economical analysis on individual air-conditioning with different solar collectors for Tunisian climate

Solar-powered chilling: Technical and economical analysis on individual air-conditioning with different solar collectors for Tunisian climate Research article Solar-powered chilling: Technical and economical analysis on individual air-conditioning with different solar collectors for Tunisian climate S. El May*, M. Mahmoudi, A. Bellagi U.R. Thermique

More information

Technological developments and market perspectives for renewable energy cooling systems

Technological developments and market perspectives for renewable energy cooling systems Collector field Technological developments and market perspectives for renewable energy cooling systems Prof.Dr.habil. Ursula Eicker Centre of Applied Research Sustainable Energy Technology zafh.net University

More information

ENERGY AUDIT IN THE KACST BUILDING

ENERGY AUDIT IN THE KACST BUILDING ENERGY AUDIT IN THE KACST BUILDING S. M. Hasnain, S. H. Alawaji, A. M. Al-Ibrahim and S. M. Smiai Energy Research Institute (ERI) King Abdulaziz City for Science and Technology (KACST) P.O. Box 6086, Riyadh

More information

THE EUROPEAN GREEN BUILDING PROGRAMME. Technical Module on Combined Heat and Power

THE EUROPEAN GREEN BUILDING PROGRAMME. Technical Module on Combined Heat and Power THE EUROPEAN GREEN BUILDING PROGRAMME Technical Module on Combined Heat and Power Contents Foreword...1 1. Introduction...2 2. Inventory of the CHP system...3 3. Assessment of technical energy saving measures...5

More information

Field test of a novel combined solar thermal and heat pump system with an ice store

Field test of a novel combined solar thermal and heat pump system with an ice store Field test of a novel combined solar thermal and system with an ice store Anja Loose Institute for Thermodynamics and Thermal Engineering (ITW), Research and Testing Centre for Thermal Solar Systems (TZS),

More information

Evaporative Cooling for Residential and Light-Commercial

Evaporative Cooling for Residential and Light-Commercial EMERGING TECHNOLOGIES This article was published in ASHRAE Journal, October 2011. Copyright 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Posted at www.ashrae.org.

More information

Systems using solar thermal energy in combination with heat pumps 1 st concept paper

Systems using solar thermal energy in combination with heat pumps 1 st concept paper Systems using solar thermal energy in combination with heat pumps 1 st concept paper to be presented at the 64 th ExCo meeting November 19-21, Winterthur, Switzerland Prepared by Hans-Martin Henning and

More information

Green Building Handbook for South Africa Chapter: Heating, Ventilation and Cooling Luke Osburn CSIR Built Environment

Green Building Handbook for South Africa Chapter: Heating, Ventilation and Cooling Luke Osburn CSIR Built Environment Green Building Handbook for South Africa Chapter: Heating, Ventilation and Cooling Luke Osburn CSIR Built Environment The heating, ventilation and cooling loads of typical commercial office space can range

More information

Yijun Gao, Wei Wu, Zongwei Han, Xianting Li *

Yijun Gao, Wei Wu, Zongwei Han, Xianting Li * Study on the performance of air conditioning system combining heat pipe and vapor compression based on ground source energy-bus for commercial buildings in north China Yijun Gao, Wei Wu, Zongwei Han, Xianting

More information

WORKING DOCUMENT ON. Possible requirements for air heating products, cooling products and high temperature process chillers TRANSITIONAL METHODS

WORKING DOCUMENT ON. Possible requirements for air heating products, cooling products and high temperature process chillers TRANSITIONAL METHODS WORKING DOCUMENT ON Possible requirements for air heating products, cooling products and high temperature process chillers TRANSITIONAL METHODS WORKING DOCUMENT in the framework of the implementation of

More information

Exploitation Tests of Borehole Heat Exchangers in the Laboratory of Renewable Energy Sources in Miekinia Poland

Exploitation Tests of Borehole Heat Exchangers in the Laboratory of Renewable Energy Sources in Miekinia Poland Proceedings World Geothermal Congress 2015 Melbourne, Australia, 19-25 April 2015 Exploitation Tests of Borehole Heat Exchangers in the Laboratory of Renewable Energy Sources in Miekinia Poland Jaroslaw

More information

Simulation Tools for Solar Cooling Systems Comparison for a Virtual Chilled Water System

Simulation Tools for Solar Cooling Systems Comparison for a Virtual Chilled Water System Simulation Tools for Solar Cooling Systems Comparison for a Virtual Chilled Water System C. Bongs 1, A. Dalibard 2, P. Kohlenbach 3, O. Marc 4, I. Gurruchaga 5, P. Tsekouras 6 1 Fraunhofer Institute for

More information

HUB RADIATOR HYBRID. Multi-energy hybrid system to produce heating and DHW. Multi-energy hybrid system to produce heating, cooling and DHW

HUB RADIATOR HYBRID. Multi-energy hybrid system to produce heating and DHW. Multi-energy hybrid system to produce heating, cooling and DHW is a multi-energy hybrid system that offers the consumer the ability to heat the house, and if necessary produce DHW also affect the environments. The platform, designed to offer innovative solutions for

More information

Energy Recovery Systems for the Efficient Cooling of Data Centers using Absorption Chillers and Renewable Energy Resources

Energy Recovery Systems for the Efficient Cooling of Data Centers using Absorption Chillers and Renewable Energy Resources Energy Recovery Systems for the Efficient Cooling of Data Centers using Absorption Chillers and Renewable Energy Resources ALEXANDRU SERBAN, VICTOR CHIRIAC, FLOREA CHIRIAC, GABRIEL NASTASE Building Services

More information

SOLAR COOLING WITH ICE STORAGE

SOLAR COOLING WITH ICE STORAGE SOLAR COOLING WITH ICE STORAGE Beth Magerman Patrick Phelan Arizona State University 95 N. College Ave Tempe, Arizona, 8581 bmagerma@asu.edu phelan@asu.edu ABSTRACT An investigation is undertaken of a

More information

SOLAR-POWERED COOLING, DEHUMIDIFICATION AND AIR CONDITIONING

SOLAR-POWERED COOLING, DEHUMIDIFICATION AND AIR CONDITIONING SOLAR-POWERED COOLING, DEHUMIDIFICATION AND AIR CONDITIONING Prof. Gershon Grossman Faculty of Mechanical Engineering Technion, Israel Institute of Technology Haifa 32000, ISRAEL November 2010 Solar Cooling,

More information

Carnegie Mellon University School of Architecture, Department of Mechanical Engineering Center for Building Performance and Diagnostics

Carnegie Mellon University School of Architecture, Department of Mechanical Engineering Center for Building Performance and Diagnostics Carnegie Mellon University School of Architecture, Department of Mechanical Engineering Center for Building Performance and Diagnostics A Presentation of Work in Progress 4 October 2006 in the Intelligent

More information

Building Energy Systems. - HVAC: Heating, Distribution -

Building Energy Systems. - HVAC: Heating, Distribution - * Some of the images used in these slides are taken from the internet for instructional purposes only Building Energy Systems - HVAC: Heating, Distribution - Bryan Eisenhower Associate Director Center

More information

Why Cities will have the Key Role in 100% Renewable Power Systems

Why Cities will have the Key Role in 100% Renewable Power Systems Why Cities will have the Key Role in 100% Renewable Power Systems European Commission Project CELSIUS The role of energy storage Electricity vs. Heat The focus of our research is electricity supplies with

More information

A NEW DESICCANT EVAPORATIVE COOLING CYCLE FOR SOLAR AIR CONDITIONING AND HOT WATER HEATING

A NEW DESICCANT EVAPORATIVE COOLING CYCLE FOR SOLAR AIR CONDITIONING AND HOT WATER HEATING A NEW DESICCANT EVAPORATIVE COOLING CYCLE FOR SOLAR AIR CONDITIONING AND HOT WATER HEATING John Archibald American Solar Roofing Company 8703 Chippendale Court Annandale, Va. 22003 e-mail: jarchibald@americansolar.com

More information

AdSORPTION CHILLER NAK

AdSORPTION CHILLER NAK AdSORPTION CHILLER NAK Chilling Capacity from 50 to 430 kw Usage of Surplus Heat from 50 C Ã*%8ÃPE+Ã TECHNICAL DESCRIPTION ADSORPTION CHILLER NAK 1 INTRODUCTION... 2 2 THE PRINCIPLE OF ADSORPTION... 2

More information

A Roof Integrated Solar Heating System Without Storage

A Roof Integrated Solar Heating System Without Storage M. and W. Saman Sustainable Energy Centre University of South Australia Mawson Lakes Boulevard, Mawson Lakes, SA 5095, Australia E-mail: martin.belusko@unisa.edu.au Abstract A prototype of a roof integrated

More information

SORBTION MATERIALS FOR APPLICATION IN SOLAR HEAT ENERGY STORAGE

SORBTION MATERIALS FOR APPLICATION IN SOLAR HEAT ENERGY STORAGE SORBTION MATERIALS FOR APPLICATION IN SOLAR HEAT ENERGY STORAGE P. Gantenbein, S. Brunold, F. Flückiger, U. Frei Institute für Solartechnik SPF, University of Applied Sciences Rapperswil, Switzerland Phone:

More information

Hybrid heat pumps. saving energy and reducing carbon emissions

Hybrid heat pumps. saving energy and reducing carbon emissions Hybrid heat pumps saving energy and reducing carbon emissions Bart Aspeslagh Product planning and new technology manager, Daikin Europe NV. aspeslagh.b@daikineurope.com Stefanie Debaets Design engineer,

More information

EVALUATION OF SOLAR & HEAT PUMP SYSTEM COMBINATIONS

EVALUATION OF SOLAR & HEAT PUMP SYSTEM COMBINATIONS Poster P.5.6-1 - EVALUATION OF SOLAR & HEAT PUMP SYSTEM COMBINATIONS Ralf, Dott, research associate, Institute of Energy in Building - FHNW, CH-4132 Muttenz; Thomas, Afjei, Prof. Dr. sc. techn., Institute

More information

Evaporative Cooling System for Aquacultural Production 1

Evaporative Cooling System for Aquacultural Production 1 Fact Sheet EES-100 March 1993 Evaporative Cooling System for Aquacultural Production 1 C. D. Baird, R. A. Bucklin, C. A. Watson and F. A. Chapman 2 INTRODUCTION Florida aquaculture sales totaled $54 million

More information

THE INSTITUTE OF REFRIGERATION

THE INSTITUTE OF REFRIGERATION Copyright 2015 The Institute of Refrigeration No publication or reprinting without authority THE INSTITUTE OF REFRIGERATION Energy systems for green buildings and solar panel heat pumps by R. Z. Wang,

More information

How To Improve Energy Efficiency Through Raising Inlet Temperatures

How To Improve Energy Efficiency Through Raising Inlet Temperatures Data Center Operating Cost Savings Realized by Air Flow Management and Increased Rack Inlet Temperatures William Seeber Stephen Seeber Mid Atlantic Infrared Services, Inc. 5309 Mohican Road Bethesda, MD

More information

Performance Test of Solar Assisted Solid Desiccant Dryer

Performance Test of Solar Assisted Solid Desiccant Dryer Performance Test of Solar Assisted Solid Desiccant Dryer S. MISHA 1,2,*, S. MAT 1, M. H. RUSLAN 1, K. SOPIAN 1, E. SALLEH 1, M. A. M. ROSLI 1 1 Solar Energy Research Institute, Universiti Kebangsaan Malaysia,

More information

HEAT PUMPS A KEY COMPONENT IN LOW CARBON FUTURE

HEAT PUMPS A KEY COMPONENT IN LOW CARBON FUTURE HEAT PUMPS A KEY COMPONENT IN LOW CARBON FUTURE Satish Joshi Managing Director CONTENTS 1. INTRODUCTION, APPLICATIONS 2. TECHNOLOGY, PROJECTS DONE, COST COMPARISION 3. HEAT PUMPS IN THE RENEWABLES DIRECTIVE,

More information

LG Electronics AE Company, Commercial Air Conditioning

LG Electronics AE Company, Commercial Air Conditioning www.lgeaircon.com New concept Ecofriendly Highefficiency Heating solution Total heating & Hot water Solution for MULTI V LG Electronics AE Company, Commercial Air Conditioning 2 Yeouidodong, Yeongdeungpogu,

More information

imagine SOLAR AIR CONDITIONING MADE EASY

imagine SOLAR AIR CONDITIONING MADE EASY imagine SOLAR AIR CONDITIONING MADE EASY WHY SOLAR COOLING? Imagine...being able to fit a solar air conditioning system to your building that would result in dramatic reductions in electricity consumption

More information

Research on the Air Conditioning Water Heater System

Research on the Air Conditioning Water Heater System Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 28 Research on the Air Conditioning Water Heater System Fei Liu Gree Electric

More information

DAikin Altherma low temperature heat pump. end user leaflet

DAikin Altherma low temperature heat pump. end user leaflet DAikin Altherma low temperature heat pump HEATING, COOLING & DOMESTIC HOT WATER end user leaflet 2 The natural choice D 3 in1: heating, cooling and hot water Daikin Altherma is a total heating and domestic

More information

Energy Efficiency in Buildings

Energy Efficiency in Buildings Energy Efficiency in Buildings Supplemental Guide to SANS 10400-XA & SANS 204 V. 3.0 Registered to: The Drawing Studio Image: digitalart / FreeDigitalPhotos.net Report Date: 26 August 2014 Practice Name:

More information

The Hybrid tri- genera0on system solar- bio- tric

The Hybrid tri- genera0on system solar- bio- tric The Hybrid tri- genera0on system solar- bio- tric S. Karellas and K. Braimakis sotokar@mail.ntua.gr, mpraim@mail.ntua.gr Na0onal Technical University of Athens 1 st Solar Open Workshop Building Integrated

More information

Executive summary. - It has a favorable geographical location with significant direct solar irradiation.

Executive summary. - It has a favorable geographical location with significant direct solar irradiation. Executive summary Introduction The use of solar concentrated energy in thermal applications has very little presence in Spain. In particular, the integration of solar thermal systems in district heating

More information

Development of Air-to-Water Heat Pump for Home Air conditioning/hot Water Supply Combination System with Chilled/Hot Water in European Markets

Development of Air-to-Water Heat Pump for Home Air conditioning/hot Water Supply Combination System with Chilled/Hot Water in European Markets 2 Development of Air-to-Water Heat Pump for Home Air conditioning/hot Water Supply Combination System with Chilled/Hot Water in European Markets - Extending Use of New Heat Pump System in Cold Regions

More information

Heat Recovery from Data Centres Conference Designing Energy Efficient Data Centres

Heat Recovery from Data Centres Conference Designing Energy Efficient Data Centres What factors determine the energy efficiency of a data centre? Where is the energy used? Local Climate Data Hall Temperatures Chiller / DX Energy Condenser / Dry Cooler / Cooling Tower Energy Pump Energy

More information

HIGH-EFFICIENCY CO 2 HEAT PUMP WATER HEATER SYSTEMS FOR RESIDENTIAL AND NON-RESIDENTIAL BUILDINGS

HIGH-EFFICIENCY CO 2 HEAT PUMP WATER HEATER SYSTEMS FOR RESIDENTIAL AND NON-RESIDENTIAL BUILDINGS 1 HIGH-EFFICIENCY CO 2 HEAT PUMP WATER HEATER SYSTEMS FOR RESIDENTIAL AND NON-RESIDENTIAL BUILDINGS Jørn Stene SINTEF Energy Research, 7465 Trondheim, Norway Jorn.Stene@sintef.no In hotels, hospitals,

More information

Solar Thermal Plus Heat Pump. Dr. Michel Haller

Solar Thermal Plus Heat Pump. Dr. Michel Haller Solar Thermal Plus Heat Pump Dr. Michel Haller Solar and Heat Pump Systems - A Question of Technology? 2 Combination of Solar Thermal and Heat Pump Key figure is the ratio of heat delivered [kwh] to electricity

More information

Optimum Solar Orientation: Miami, Florida

Optimum Solar Orientation: Miami, Florida Optimum Solar Orientation: Miami, Florida The orientation of architecture in relation to the sun is likely the most significant connection that we can make to place in regards to energy efficiency. In

More information

Test Report No. C926LPEN

Test Report No. C926LPEN Institut für Solartechnik Hochschule für Technik Rapperswil Oberseestrasse 10, CH 8640 Rapperswil Tel +41 55 222 48 21, Fax +41 55 222 48 44 www.solarenergy.ch Ordered by: AMK-Collectra AG Bahnweg Nord

More information

Feasibility Study for Mobile Sorption Storage in Industrial Applications

Feasibility Study for Mobile Sorption Storage in Industrial Applications Feasibility Study for Mobile Sorption Storage in Industrial Applications G. Storch, A. Hauer ZAE Bayern Bavarian Center for Applied Energy Research Motivation Aim: waste heat usage for better overall efficiency

More information

Improving Data Center Energy Efficiency Through Environmental Optimization

Improving Data Center Energy Efficiency Through Environmental Optimization Improving Data Center Energy Efficiency Through Environmental Optimization How Fine-Tuning Humidity, Airflows, and Temperature Dramatically Cuts Cooling Costs William Seeber Stephen Seeber Mid Atlantic

More information

Climate and Energy Responsive Housing in Continental Climates. The Suitability of Passive Houses for Iran's Dry and Cold Climate. Farshad Nasrollahi

Climate and Energy Responsive Housing in Continental Climates. The Suitability of Passive Houses for Iran's Dry and Cold Climate. Farshad Nasrollahi Climate and Energy Responsive Housing in Continental Climates The Suitability of Passive Houses for Iran's Dry and Cold Climate Farshad Nasrollahi Table of Contents Abstract German Abstract Introduction

More information

HVAC Efficiency Definitions

HVAC Efficiency Definitions HVAC Efficiency Definitions Term page EER - 2 SEER - 3 COP - 4 HSPF - 5 IPLV - 6 John Mix May 2006 Carrier Corporation 1 Energy Efficiency Ratio (EER) The energy efficiency ratio is used to evaluate the

More information

Dharam V. Punwani President, Avalon Consulting, Inc. Presented at Turbine Inlet Cooling Association Webinar April 9, 2014

Dharam V. Punwani President, Avalon Consulting, Inc. Presented at Turbine Inlet Cooling Association Webinar April 9, 2014 Dharam V. Punwani President, Avalon Consulting, Inc. Presented at Turbine Inlet Cooling Association Webinar April 9, 2014 Background: What is the problem that needs a solution? What is Turbine Inlet Cooling

More information

GAS HEAT PUMPS WORKSHOP 01 st & 02 nd December 2011 Saint-Denis/Paris. Dr. Belal Dawoud. Viessmann Werke Allendorf GmbH Viessmann Strasse, 1

GAS HEAT PUMPS WORKSHOP 01 st & 02 nd December 2011 Saint-Denis/Paris. Dr. Belal Dawoud. Viessmann Werke Allendorf GmbH Viessmann Strasse, 1 Vorlage 1 22.11.2011 Viessmann Gas Driven Sorption Heat Pumps GAS HEAT PUMPS WORKSHOP 01 st & 02 nd December 2011 Saint-Denis/Paris Dr. Belal Dawoud Manager R&D Thermally Driven Heat Pumps Viessmann Werke

More information

Feasibility Study of Solar Heating and Cooling Systems in Kuwait

Feasibility Study of Solar Heating and Cooling Systems in Kuwait Feasibility Study of Solar Heating and Cooling Systems in Kuwait Abstract A. A. Ghoneim and A. H. Abdullah Applied Sciences Department, College of Technological Studies, Shuwaikh 70654, KUWAIT E-mail:

More information

SWISSOLAR 2104 TASK 44 SOLAR AND HEAT PUMP SYSTEMS

SWISSOLAR 2104 TASK 44 SOLAR AND HEAT PUMP SYSTEMS SWISSOLAR 2104 TASK 44 SOLAR AND HEAT PUMP SYSTEMS Jean-Christophe Hadorn Operating Agent of Task 44 for the Swiss Federal Office of Energy Base consultants SA, 1207 Geneva, Switzerland, jchadorn@baseconsultants.com

More information

OPTIMAL POLYGEN COOLING CONCEPT FOR ST. OLAVS HOSPITAL IN TRONDHEIM, NORWAY

OPTIMAL POLYGEN COOLING CONCEPT FOR ST. OLAVS HOSPITAL IN TRONDHEIM, NORWAY 1st European Conference on Polygeneration OPTIMAL POLYGEN COOLING CONCEPT FOR ST. OLAVS HOSPITAL IN TRONDHEIM, NORWAY G. Eggen 1, A. Utne 2 1) COWI A/S, PB 2564 Sentrum, NO-7414 Trondheim, Norway, e-mail:

More information

EXPERIMENTAL AND CFD ANALYSIS OF A SOLAR BASED COOKING UNIT

EXPERIMENTAL AND CFD ANALYSIS OF A SOLAR BASED COOKING UNIT EXPERIMENTAL AND CFD ANALYSIS OF A SOLAR BASED COOKING UNIT I N T R O D U C T I O N Among the different energy end uses, energy for cooking is one of the basic and dominant end uses in developing countries.

More information

Silicagel-water adsorption cooling prototype system for mobile air conditioning

Silicagel-water adsorption cooling prototype system for mobile air conditioning Silicagel-water adsorption cooling prototype system for mobile air conditioning R. de Boer S.F. Smeding S. Mola Paper to be presented at the Heat Powered Cycles Conference 09 Berlin, 7 to 9 September 2009

More information

Environmental and Safety Impacts of HFC Emission Reduction Options for Air Conditioning and Heat Pump Systems

Environmental and Safety Impacts of HFC Emission Reduction Options for Air Conditioning and Heat Pump Systems Environmental and Safety Impacts of HFC Emission Reduction Options for Air Conditioning and Heat Pump Systems William M. Corcoran, George Rusch, Mark W. Spatz, and Tim Vink AlliedSignal, Inc. ABSTRACT

More information

Energy Impact of Increased Server Inlet Temperature

Energy Impact of Increased Server Inlet Temperature Energy Impact of Increased Server Inlet Temperature By: David Moss, Dell, Inc. John H. Bean, Jr., APC White Paper #138 Executive Summary The quest for efficiency improvement raises questions regarding

More information

NOVEL ENERGY PROVISION SYSTEM FOR THE SUSTAINABLE CONNECTED HOME

NOVEL ENERGY PROVISION SYSTEM FOR THE SUSTAINABLE CONNECTED HOME Luigi Crema crema@fbk.eu April 21 st 23 rd New Delhi (India) NOVEL ENERGY PROVISION SYSTEM FOR THE SUSTAINABLE CONNECTED HOME Luigi Crema, Senior Researcher @ FBK - REET and F. Alberti, A. Bertaso, A.

More information

Solar Energy Storage Critical Success Factors for Passive Houses in Ireland

Solar Energy Storage Critical Success Factors for Passive Houses in Ireland Solar Energy Storage Critical Success Factors for Passive Houses in Ireland Shane Colclough, Dr Philip Griffiths, Dr Mervyn Smyth, Centre for Sustainable Technologies, University of Ulster, Newtownabbey,

More information

Performance ratio. Contents. Quality factor for the PV plant

Performance ratio. Contents. Quality factor for the PV plant Performance ratio Quality factor for the PV plant Contents The performance ratio is one of the most important variables for evaluating the efficiency of a PV plant. Specifically, the performance ratio

More information

Test Report No. C1319LPEN

Test Report No. C1319LPEN Institut für Solartechnik Hochschule für Technik Rapperswil Oberseestrasse 10, CH 8640 Rapperswil Tel +41 55 222 48 21, Fax +41 55 222 48 44 www.solarenergy.ch Ordered by: Thermics S.r.l. Via dell'olmo

More information

Energy Efficiency. Energy Efficient Water Heating: Purchasing a new electric water heater. Hot water use has a significant impact on your bill.

Energy Efficiency. Energy Efficient Water Heating: Purchasing a new electric water heater. Hot water use has a significant impact on your bill. Energy Efficiency Energy Efficient Water Heating: Purchasing a new electric water heater. Water heating accounts for about 18 percent of your home energy bill. Only space heating and cooling account for

More information

Creating Efficient HVAC Systems

Creating Efficient HVAC Systems Creating Efficient HVAC Systems Heating and Cooling Fundamentals for Commercial Buildings Heating, ventilating, and air conditioning (HVAC) systems account for nearly half of the energy used in a typical

More information

Solar chilled drinking water sourced from thin air: modelling and simulation of a solar powered atmospheric water generator

Solar chilled drinking water sourced from thin air: modelling and simulation of a solar powered atmospheric water generator 20th International Congress on Modelling and Simulation, Adelaide, Australia, 1 6 December 2013 www.mssanz.org.au/modsim2013 Solar chilled drinking water sourced from thin air: modelling and simulation

More information

Solar Energy Systems. Matt Aldeman Senior Energy Analyst Center for Renewable Energy Illinois State University

Solar Energy Systems. Matt Aldeman Senior Energy Analyst Center for Renewable Energy Illinois State University Solar Energy Solar Energy Systems Matt Aldeman Senior Energy Analyst Center for Renewable Energy Illinois State University 1 SOLAR ENERGY OVERVIEW 1) Types of Solar Power Plants 2) Describing the Solar

More information

1. Introduction - The SOLCO Project... 3. 2. Layout of Solar Cooling Installations... 6. 3. Solar Heating and Cooling: Basic Principles...

1. Introduction - The SOLCO Project... 3. 2. Layout of Solar Cooling Installations... 6. 3. Solar Heating and Cooling: Basic Principles... Contents 1. Introduction - The SOLCO Project..... 3 2. Layout of Solar Cooling Installations... 6 3. Solar Heating and Cooling: Basic Principles................... 12 4. Solar Cooling Installations - Case

More information

Window Thermal Performance Optimization in Governmental Emirati Housing Prototype in Abu Dhabi, UAE

Window Thermal Performance Optimization in Governmental Emirati Housing Prototype in Abu Dhabi, UAE Window Thermal Performance Optimization in Governmental Emirati Housing Prototype in Abu Dhabi, UAE Abuimara, Tareq A 1 ; Tabet Aoul, Kheira A. 1 1 Department of Architectural Engineering, United Arab

More information

Renewable Heat Pumps. A guide for the technically minded

Renewable Heat Pumps. A guide for the technically minded Renewable Heat Pumps A guide for the technically minded How do heat pumps work? A heat pump is an environmental energy technology that extracts heat from low temperature sources (air, water, ground), upgrades

More information

Natural geothermal energy.

Natural geothermal energy. ROTEX ground source heat pump Natural geothermal energy. ROTEX HPU ground the ground source heat pump that heats with free geothermal energy. Compact, environmentally responsible and uniquely efficient.

More information

Solar vs. Conventional Air-Conditioning Systems: Review of LIMKOKWING University Campus, Cyberjaya, Malaysia

Solar vs. Conventional Air-Conditioning Systems: Review of LIMKOKWING University Campus, Cyberjaya, Malaysia Solar vs. Conventional Air-Conditioning Systems: Review of LIMKOKWING University Campus, Cyberjaya, Malaysia Edlas Khor Jiunn Hao and Ali GhaffarianHoseini * Faculty of Architecture and the Built Environment,

More information

Evaluation Of Hybrid Air- Cooled Flash/Binary Power Cycle

Evaluation Of Hybrid Air- Cooled Flash/Binary Power Cycle INL/CON-05-00740 PREPRINT Evaluation Of Hybrid Air- Cooled Flash/Binary Power Cycle Geothermal Resources Council Annual Meeting Greg Mines October 2005 This is a preprint of a paper intended for publication

More information

Innovative Applications of Renewable Heating and Cooling

Innovative Applications of Renewable Heating and Cooling Innovative Applications of Renewable Heating and Cooling Executive Summary... 3 Introduction... 4 Scope of this document... 4 Industrial process heat... 5 Introduction... 5 Examples... 5 Specific barriers

More information

Solar Absorption Cooling / Heating System for the Intelligent Workplace

Solar Absorption Cooling / Heating System for the Intelligent Workplace Solar Absorption Cooling / Heating System for the Intelligent Workplace Ming Qu Sophie Masson Dr. David Archer IWESS Workshop Oct.4,2006 page1 Introduction IW solar cooling/heating system One -axis solar

More information

Solar Desiccant Air Conditioner

Solar Desiccant Air Conditioner Department of Mechanical Engineering ME 490 B Solar Desiccant Air Conditioner Luis Hernandez Joel Heywood Abhishek Kumar Yzzer Roman Advisor: Dr. Fletcher Miller Table of Contents Page 1. Abstract. 3 2.

More information

PROTOCOL FOR BUILDING ENERGY ANALYSIS SOFTWARE For Class 3, 5, 6, 7, 8 and 9 buildings

PROTOCOL FOR BUILDING ENERGY ANALYSIS SOFTWARE For Class 3, 5, 6, 7, 8 and 9 buildings PROTOCOL FOR BUILDING ENERGY ANALYSIS SOFTWARE For Class 3, 5, 6, 7, 8 and 9 buildings Version 2006.1 AUSTRALIAN BUILDING CODES BOARD JANUARY 2006 TABLE OF CONTENTS Foreword 1. Scope 2. Purpose and context

More information

Evaporative Cooling. Terminology. Date: February 28, 2012. Concepts

Evaporative Cooling. Terminology. Date: February 28, 2012. Concepts Evaporative Cooling Date: February 28, 2012 P R E S E N T E D B Y R O B E R T P A D G E T E 3 M S E N G I N E E R E D M E C H A N I C A L S Y S T E M S Concepts 1. Evaporation is a cooling process. Using

More information