Drain Water Heat Recovery
|
|
- Audra Lloyd
- 7 years ago
- Views:
Transcription
1 EMERGING TECHNOLOGIES This article was published in ASHRAE Journal, November Copyright 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Posted at This article may not be copied and/or distributed electronically or in paper form without permission of ASHRAE. For more information about ASHRAE Journal, visit Drain Water Heat Recovery By Alissa Cooperman; John Dieckmann, Member ASHRAE; and James Brodrick, Ph.D., Member ASHRAE Energy consumption for water heating accounts for 17% of residential and 7% of commercial site energy consumed (13% of residential and 4% of commercial primary energy consumed). 1,2 A study conducted by the U.S. Department of Energy (DOE) found that approximately 350 billion kwh of energy is sent down the drain in the form of used hot water annually. 3 The use of drain water heat recovery (DWHR), also known as graywater heat exchanger (GWHE), technologies can reduce the energy consumed for water heating by recovering some of this energy, and recycling it to preheat incoming water. At the time it is sent down the drain, used hot water on average still contains 80% to 90% of the thermal energy it contained (relative to the cold supply water) when it left the water heater. By using a heat recovery heat exchanger between drain (graywater) and incoming fresh water, up to 40% of this wasted energy can be saved, reducing wasted energy to 49% to 54% of energy used to initially heat the hot water demanded. 4,5 DWHR systems use drain water to heat a building s incoming cold water supply. This is accomplished by a copper heat exchanger, which takes advantage of the film flow of drain water through vertical pipes and the unused heat energy in the drain water. DWHR units are available in two types: storage and on-demand. Storage units (Figure 1) consist of a submerged copper heat exchanger in a tank of fresh water. Warm drain water flows through the heat exchanger heating the tank water for later use. This enables the technology to be used with devices that do not continuously demand, or simultaneously demand and drain water, such as clothes washing machines and dishwashers. The warmed water in the Drain Water In Cold Water In Drain Water Heat Exchanger Figure 1: Drain water heat recovery storage unit. storage tank unit provides preheated inlet water for the water heater. 6 An on-demand DWHR unit (Figure 2) replaces a vertical segment of drain pipe. An inner copper pipe 3 in. to 4 in. (76 mm to 102 mm) in diameter wrapped in external 0.5 in. (13 mm) copper pipe(s) comprises the system.warm drain water flows down the inner pipe while incoming cold supply water flows up the external copper piping. The outer pipes are slightly flattened where they abut the inner pipe, and are soldered to the inner large diameter pipe to improve the thermal connection between the two conduits. On-demand units take advantage of the drain water film flow down the inner walls of the vertical pipe. Unlike horizontal drain pipes, in which the water flow touches half of the inner surface of the pipe, the water flow in vertical drain pipes coats all of the inner surface area in a thin film. The thin film results in a reasonably high heat transfer coefficient Water Storage Tank Warm Water Out Drain Water Out 58 ASHRAE Journal ashrae.org November 2011
2 Advertisement formerly in this space.
3 EMERGING TECHNOLOGIES to match the heat transfer coefficient on the fresh supply water side of the exchanger. 3 This type of GWHE is referred to as a gravity film heat exchanger. It is appropriate for devices where there is a continuous flow of hot or warm water and simultaneous flow down the drain, such as a shower. Three ways are commonly used to install the gravity film heat exchanger using either balanced or unbalanced flow. In balanced flow, the preheated water feeds both the water heater inlet and the cold water inlet of the shower. In this configuration, the temperature rise of the fresh water is equivalent to the temperature drop of the drain water. The flow rates between drain and fresh water are the same; they are balanced. Two unbalanced flow configurations are used. The heat exchanger is used to heat either the inlet water to the water heater or the inlet cold water to the shower. In this case the flows are unbalanced, there is more drain water flowing through the central pipe than fresh water flowing up and around it. The flow imbalance causes a larger temperature rise in the freshwater than the temperature drop in the drain water. Though this is the case, balanced flow installations are more efficient. Hot Water Faucet Hot Water Tank Preheated Cold Water To Plumbing Fixtures And To Water Heater Heat Exchanger Cold Water In Drain Water Figure 2: Drain water heat recovery on-demand unit. 4 Flow Configuration Heat Energy Savings Balanced ~50% Unbalanced 30% 45% (Savings Depend on Water End Use Temperature) Table 1: Heat energy savings based on HX flow configuration. 3 Advertisement formerly in this space. Advertisement formerly in this space. 60 ASHRAE Journal November 2011
4 Advertisement formerly in this space.
5 EMERGING TECHNOLOGIES Energy Consumed (kwh) Water Inlet Temperature Hot Water Tank Without GWHE Hot Water Tank With GWHE F (1.8 C) F (20.6 C) Table 2: Energy consumed by hot water heaters with and without graywater heat exchanger. 7 There is less water being heated in the unbalanced flow configurations (Table 1, Page 60). 3 At least five manufacturers of DWHR units exist. Most are based in Canada and distribute their products to North America. DWHR units can also be bought at common hardware stores. However, it is recommended that a professional install the product. Energy Savings Drain water heat recovery has been shown to save significant amounts of energy. A study conducted in England in 1975 showed 31.5% savings on fuel used for water heating. Advertisement formerly in this space. Another study conducted in 1998 found 35% to 50% savings depending on the configuration (balanced or unbalanced) of the heat exchanger. A 1997 study of three manufacturers of DWHR units showed 16% energy savings on the energy load of the water heater. 7 A study conducted in Montreal concluded that 40% of the energy load for hot water is consumed by simultaneous flow, i.e., draining and demanding hot water at the same time. Thus, the reductions of hot water heater electricity demand with and without GWHE units were studied. Ten simulated electric hot water heater demand profiles were created, compared to 600 sets of experimental data, and averaged by hour of use. The experimental data sets confirmed the energy expenditures seen in the simulation data, and a daily peak of 1.3 kw was recorded. Table 2 summarizes the results of the study. It shows that colder inlet water temperature results in more energy being recovered. The same study demonstrated a 10.4% reduction in domestic water heater electrical demand in the morning and a 21.5% reduction in the evening. 7 A study conducted for the DOE found that DWHR units can save 800 kwh/yr to 2,300 kwh/yr per house based on the number installed. 3 Market Factors On-demand drain water heat recovery units are durable and easily integrated into existing and new construction. There are no moving parts, they replace existing segments of pipe, and fit into studded walls. These units provide benefits beyond energy and monetary savings. They extend the life of water heaters. Also, by increasing the capacity of the water heater they either allow for undersized water heaters to provide for above their rated capacity or allow for water heaters to be undersized in new construction or during a retrofit. 3 An average on-demand heat recovery unit costs $500 plus installation fees. It has been calculated that the payback time for one unit is two to five years. 5 Depending on the home owner and number of appliances that could benefit from DWHR units, one or more may be installed. Regardless, the technology will eventually pay for itself. References 1. DOE Buildings Energy Data Book. Table table DOE Buildings Energy Data Book. Table table DOE Heat Recovery from Wastewater Using a Gravity-Film Heat Exchanger. Federal Energy Management Program. tinyurl.com/gravity-film. 4. DOE Drain Water Heat Recovery Tomlinson, J.J Heat Recovery From Wastewater Using a Gravity-Film Heat Exchanger. Federal Energy Management Program. Oak Ridge National Laboratory National Association of Home Builders Drainwater Heat Recovery. tinyurl.com/nahb Eslami-nejad, P. and M. Bernier Impact of grey water heat recovery on the electrical demand of domestic hot water heaters. Eleventh International IBPSQA Conference. Alissa Cooperman is a technologist and John Dieckmann is a director in the Mechanical Systems Group of TIAX LLC, Lexington, Mass. James Brodrick, Ph.D., is a project manager with the Building Technologies Program, U.S. Department of Energy, Washington, D.C. 62 ASHRAE Journal November 2011
6 Advertisement formerly in this space.
Power Plant Water Use By Alissa Cooperman; John Dieckmann, Member ASHRAE; and James Brodrick, Ph.D., Member ASHRAE S
EMERGING TECHNOLOGIES This article was published in ASHRAE Journal, January 2012. Copyright 2012 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Posted at www.ashrae.org.
More informationEvaporative 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 informationLaundromat saves with hot water recycler
Laundromat saves with hot water recycler By REBECCA BROWN COURIER STAFF LITTLETON To Ed Zuk, saving hot water is like putting money in the bank. His Littleton Easy Wash on Pleasant Street is the first
More informationIncorporation of Hot Water Demand Reduction into HERS 2013 RESNET Building Performance Conference
Copyright 2013, Gary Klein, Affiliated Interna:onal Management, LLC Incorporation of Hot Water Demand Reduction into HERS 2013 RESNET Building Performance Conference Gary Klein Affiliated Interna:onal
More informationHome comfort: water heating
Home comfort: water heating Water heating usage Hot water. It s one of those luxuries we give little thought to until we run out. This information is provided to help you get the most value and comfort
More informationCodes and High Performance Hot Water Systems. Gary Klein Affiliated International Management, LLC 916 549 7080 gary@aim4sustainability.
Codes and High Performance Hot Water Systems Gary Klein Affiliated International Management, LLC 916 549 7080 gary@aim4sustainability.com Annual Energy Use for Heating Water Natural Gas Gallons Per Day
More informationCost Estimation for Materials and Installation of Hot Water Piping Insulation
Cost Estimation for Materials and Installation of Hot Water Piping Insulation Prepared for Pacific Northwest National Laboratory Under Contract Number: 18O9O2 By Gary Klein, Managing Partner Affiliated
More informationCHAPTER 9: WATER HEATING
Chapter 9: Water Heating 145 CHAPTER 9: WATER HEATING Energy costs for water heating can be as great as the costs for heating, for an energy efficient house, in a mild climate. Estimating hot water usage
More informationEnergy 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 informationWater Heating and Heat Recovery 1
PID 113 (488) Water Heating and Heat Recovery 1 Florida Power Corporation 2 ENERGY-EFFICIENT WATER HEATING: IT S THE EASIEST WAY TO SAVE ENERGY DOLLARS Anywhere from 10% to 25% of the money you spend on
More informationLarge Energy Savings Per Installation VFDs for Large Chillers
This article was published in ASHRAE Journal, June 2010. Copyright 2010 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Reprinted here by permission from ASHRAE at www.tiaxllc.com.
More informationHigh Performance Hot Water Systems Denver July 2010
High Performance Hot Water Systems Denver July 2010 Gary Klein Affiliated International Management, LLC 916-549-7080 gary@aim4sustainability.com Gary Klein, 2010 Gaps Hot water is a system We need systemic
More informationTankless Water Heater A Primer for Contractors, Installers, Builders and Homeowners
Tankless Water Heater A Primer for Contractors, Installers, Builders and Homeowners Your Questions Answered Common applications Benefits of performance How to select, size and install Efficient water heating
More informationRESEARCH HIGHLIGHT. The Impact of Heat Pump Water Heaters on Whole-House Energy Consumption
RESEARCH HIGHLIGHT December 2014 Technical Series 14-104 The Impact of Heat Pump Water Heaters on Whole-House Energy Consumption INTRODUCTION Heat pump water heaters are one of the most energyefficient
More informationPERFORMANCE EVALUATION OF WATER-FLOW WINDOW GLAZING
PERFORMANCE EVALUATION OF WATER-FLOW WINDOW GLAZING LI CHUNYING DOCTOR OF PHILOSOPHY CITY UNIVERSITY OF HONG KONG FEBRUARY 2012 CITY UNIVERSITY OF HONG KONG 香 港 城 市 大 學 Performance Evaluation of Water-flow
More informationHEAT RECOVERY FROM CHILLED WATER SYSTEMS. Applications for Heat Reclaim Chillers
HEAT RECOVERY FROM CHILLED WATER SYSTEMS Applications for Heat Reclaim Chillers April 2008 TABLE OF CONTENTS INTRODUCTION... 3 WASTE HEAT SOURCES... 3,4 Capturing Sufficient Heat for Useful Purposes...
More informationDelivering exceptional performance and Ecovalue. Ecocent
1 Delivering exceptional performance and Ecovalue. Ecocent 2 The Ecocent Hot Water System As the cost of providing heating and hot water continues to increase, homes and businesses are seeking out more
More informationRainwater Harvesting Systems Cernunnos Homes Version 1.0
Rainwater Harvesting Systems Cernunnos Homes Version 1.0 On average a UK citizen consumes around 150 litres of mains water per day. Installing water saving devices such as aerated taps; shower heads; and
More informationDomestic Hot Water System Piping Insulation: Analysis of Benefits and Cost
Domestic Hot Water System Piping Insulation: Analysis of Benefits and Cost Prepared for: National Association of Home Builders Prepared by: NAHB Research Center 400 Prince Georges Boulevard Upper Marlboro,
More informationSession 2: Hot Water Supply
MEBS6000 Utility Services http://www.hku.hk/mech/msc-courses/mebs6000/index.html Session 2: Hot Water Supply Dr. Benjamin P.L. Ho Department of Mechanical Engineering The University of Hong Kong E-mail:
More informationShower Heat Recovery Overview of Commercially Available DWHR Systems
Shower Heat Recovery Overview of Commercially Available DWHR Systems Arthur Kimmels Meander Heat Recovery April 2011 Document revision 1.0 www.meanderhr.com Document revision history Document Date Author
More informationSaving Water and Energy in Residential Hot Water Distribution Systems. Gary Klein California Energy Commission
Saving Water and Energy in Residential Hot Water Distribution Systems Gary Klein California Energy Commission What Do You Want from your Hot Water System? Safety Not too hot Not too cold No harmful bacteria
More informationFREQUENTLY ASKED QUESTIONS (SOLAR WATER HEATER)
FREQUENTLY ASKED QUESTIONS (SOLAR WATER HEATER) Q.No.1 What is Solar Water Heater? A Solar Water Heater is a device which provides hot water for bathing, washing, cleaning, etc. using solar energy. It
More informationHeat Recovery In Retail Refrigeration
This article was published in ASHRAE Journal, February 2010. Copyright 2010 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Posted at www.ashrae.org. This article may not
More informationDemand. No Demand. During the development of ANSI/ASHRAE/IESNA Standard. Electrical Rates for Standard 90.1-2010
The following article was published in ASHRAE Journal, April 2008. Copyright 2008 American Society of Heating, Refrigerating and Air- Conditioning Engineers, Inc. It is presented for educational purposes
More informationA heat pipe heat recovery heat exchanger for a mini-drier
A heat pipe heat recovery heat exchanger for a mini-drier A Meyer Department of Mechanical Engineering, University of Stellenbosch, Stellenbosch R T Dobson Department of Mechanical Engineering, University
More informationAPPLICATIONS OF AN HEAT PIPE HEAT EXCHANGER IN THE RECOVERY OF WASTE HEAT FROM URBAN WASTEWATERS
17 th Building Services, Mechanical and Building Industry Days Urban Energy Conference, 13-14 October 2011, Debrecen, Hungary APPLICATIONS OF AN HEAT PIPE HEAT EXCHANGER IN THE RECOVERY OF WASTE HEAT FROM
More informationRainwater Harvesting
Rainwater Harvesting With climate change now a reality rather than a speculated possibility, the demand on water resources has gone up, whilst the amount of water available for supply has gone down. Forth
More informationWC flushing cistern single or dual flush 0.13 0.05 2 to fill in 2 minutes WC trough cistern 0.15 per WC 0.10 2 Wash basin tap size 1 2
HAC_C0.qxd 7/4/08 9: Page 74 Chapter Pipe sizing Pipes and fittings should be sized so that the flow rates for individual draw-offs are equal to the design flow rates shown in table.. During simultaneous
More informationHome Energy Briefs #5 WATER HEATING
Home Energy Briefs Rocky Mountain Institute s #5 WATER HEATING The 2004 edition of this Brief is made possible with generous support by Stonyfield Farm (www.stonyfield.com), the National Association of
More informationAll Electrical School
All Electrical School with GS in Quebec Preliminary Results Vasile MINEA Workshop on Canadian Heat Pumps & Refrigeration Activities Montreal, May 10, 2004 Hydro-Quebec Contribution Sector: Commercial,
More informationyour water pressure explained
your water pressure explained water networks your responsibility low pressure Our water networks are designed so that a typical home has a plentiful supply of water pressure and flow. There are however
More informationresearch highlight Monitoring Performance of Retrofitting from Tank to Tankless Water Heaters
research highlight December 2011 Technical Series - 11-101 Monitoring Performance of Retrofitting from Tank to Tankless Water Heaters Background Domestic hot water energy consumption represents the second
More informationSaving Heating Costs In Warehouses
2005, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (www.ashrae.org). Reprinted by permission from ASHRAE Journal, (Vol. 47, No. 12, December 2005). This article may not
More informationGet more from your hot water
Get more from your hot water 3 action sheet Whether you re choosing a new hot water system or using the one you already have, there are some easy ways to reduce your energy use without compromising on
More informationWhat to Expect From the Examination. How to Study the Plumbing Codes
Texas State Board of Plumbing Examiners Plumbing Inspector Examination Review Course The following Examination Review Course is designed to assist an applicant in preparing for the Plumbing Inspector examination.
More informationThe Truth about Tankless Water Heaters Courtesy of the Cooperative Research Network
STA January 2010 CRN Consumer Product Review Word Count: 915 The Truth about Tankless Water Heaters Courtesy of the Cooperative Research Network Many homeowners have seen advertisements for tankless water
More informationASPE Seminar Water Heater Piping Strategies. Presented by Joe Kalarickal, EIT Regional Sales Manager AERCO International
ASPE Seminar Water Heater Piping Strategies Presented by Joe Kalarickal, EIT Regional Sales Manager AERCO International Presentation Overview Water Heater Piping Strategies How to size a water heater?
More informationWATER. Water Management Protect your building from water damage. Intent. Information & Tips
Water Management Protect your building from water damage If not managed properly, rain can drain into unwanted areas damaging your roof, windows, walls and facade. Eliminate water damage to your property
More informationHow 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 informationPlumbing Identification and Damage Assessment Guide
Plumbing Identification and Damage Assessment Guide *Please note that not all systems will be represented exactly by these diagrams and photos. As a vendor, it is required that you familiar yourself with
More informationIntroduction. Kitchens
Chapter 10 Water Fixtures and Conservation Introduction Responsible use of fresh water means WATER AT-A-GLANCE ensuring that all water-consuming fixtures Introduction in public areas are operating properly,
More informationGreenhouse Gas Implications of HVAC Upgrades in Multi-Unit Residential Buildings
Greenhouse Gas Implications of HVAC Upgrades in Multi-Unit Residential Buildings J A NUARY 2015 INTRODUCTION This Research Report explores best practices and approaches for reducing greenhouse gas (GHG)
More informationTo many people, a home s plumbing system is perceived as being extremely
Chapter 1 Understanding Plumbing In This Chapter Knowing what you re getting yourself into Touring residential plumbing systems To many people, a home s plumbing system is perceived as being extremely
More informationGround Source Heat Pumps versus High Efficiency Natural Gas Furnaces in Alberta
Ground Source Heat Pumps versus High Efficiency Natural Gas Furnaces in Alberta Jerry Shaw Ph D, P Ag February 2, 2003 Ground Source Heat Pumps (GSHPs) have been used for heating and cooling buildings
More informationENERGY STAR Residential Water Heaters: Final Criteria Analysis
ENERGY STAR Residential Water Heaters: Final Criteria Analysis Water heating represents between thirteen and seventeen percent of national residential energy consumption, making it the third largest energy
More informationThermal Coupling Of Cooling and Heating Systems
This article was published in ASHRAE Journal, February 2011. Copyright 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Posted at www.ashrae.org. This article may not
More informationE-gas Instant Gas Water Heaters
The Proven Preferred Choice! E-gas Instant Gas Water Heaters Training & Information Manual: There are important functional and operational differences between the conventional hot water geyser and the
More informationSubpart 1. Installation. All plumbing systems must be. installed and tested according to this chapter and chapter 4715,
4658.4500 PLUMBING SYSTEMS; NEW CONSTRUCTION. Subpart 1. Installation. All plumbing systems must be installed and tested according to this chapter and chapter 4715, the Minnesota Plumbing Code. Subp. 2.
More informationThis report presents the findings and recommendations of the assessment of energy use and
This report presents the findings and recommendations of the assessment of energy use and environmental stewardship of Arlington Street Church, Boston, MA. As stewards of the earth it is important that
More informationWhen Should Examination Preparation Begin?
Texas State Board of Plumbing Examiners Tradesman Plumber-Limited Licensee Examination Review Course The following Examination Review Course is designed to assist a registered Plumber s Apprentice in preparing
More informationIn Part 1 of this article (see January/February 2005
Hot-Water Distribution Systems Part II By Gary Klein This article was first published in P l u m b i n g Systems & Design magazine by the American Society of Plumbing Engineers. It is reprinted with updated
More informationSelecting a New Water Heater
U ENERGY EFFICIENCY AND RENEWABLE ENERGY CLEARINGHOUSE Selecting a New Water Heater Many homeowners wait until their heater fails before shopping for a replacement. Because they are in a hurry to regain
More informationWhat s the Big Deal About Tankless Water Heaters? A WHITE PAPER
What s the Big Deal About Tankless Water Heaters? A WHITE PAPER Dr. William R.Hoover A.O.Smith Corporate Technology Center As energy supplies tighten and fuel costs increase, tankless water heaters are
More informationHalf the cost Half the carbon
Half the cost Half the carbon the world s most efficient micro-chp What is BlueGEN? The most efficient small-scale electricity generator BlueGEN uses natural gas from the grid to generate electricity within
More informationAir Conditioner Water Heater Model ACWH18
Air Conditioner Water Heater Model ACWH18 Installation Guide IMPORTANT! READ THIS FIRST! Commissioning of this unit must be done by a licensed HVAC technician. Commissioning includes making the electrical
More informationDominic i Barbato Dpt. Of Building and Safety (818) 374 4361 domenico.barbato@lacity.org
Dominic i Barbato Dpt. Of Building and Safety (818) 374 4361 domenico.barbato@lacity.org b 2011 Los Angeles Plumbing Code LAPC changes from 2008 2011 Los Angeles Plumbing Code Consists of the following:
More informationSolar Hot Water Heaters
Solar Hot Water Heaters Three High Vacuum Water inlet Stainless Steel screw Gel seal and insulation Water outlet Dust proof seals Non Pressure Models Details ASWH-1b ( Color Painted 304 ) ASWH-1c ( stainless
More informationYijun 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 informationHeating and cooling with wastewater
WASTE WATER Solutions Heating and cooling with wastewater Recovery of thermal energy from municipal and industrial wastewater Uc Ud Ub Ua a sewer b wastewater shaft with HUBER screen and delivery pump
More informationGuide for Efficient Hot Water Delivery Systems
s 1.0 Introduction This guide is designed to help builders better understand and meet the hot water delivery system criteria as specified in the WaterSense New Home Specification (WaterSense new home specification).
More informationClosed-Loop Ground-Coupled Heat Pump Systems
The following article was published in ASHRAE Journal, September 2006. Copyright 2006 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. It is presented for educational purposes
More informationWATER HEATERS. If your water heater tank is leaking, then your course is clear: buy a new unit. But if it isn t, your answer is less obvious.
HOME ENERGY GUIDE TECHNIQUES TACTICS & TIPS WATER HEATERS Minnesota Department of Commerce Energy Information Center Water heating is often the second largest energy expense in the Minnesota home, and
More informationCODE NOTES. Insulation Requirements in Commercial Buildings for Mechanical and Service Hot-Water Piping
BUILDING TECHNOLOGIES PROGRAM Insulation Requirements in Commercial Buildings for Mechanical and Service Hot-Water Piping The intent of the pipe insulation requirements is to reduce temperature changes
More informationEnergy & Sustainability Merit Badge Prerequisites Worksheet
HOUSTON MUSEUM OF NATURAL SCIENCE scouts@hmns Energy & Sustainability Merit Badge Prerequisites Worksheet Scout s Name: Unit: Energy Prerequisites Requirement 4 Conduct an energy audit of your home. Attic
More informationSTATE SUPER HIGH EFFICIENCY Up To 96% Thermal RESIDENTIAL PREMIER POWER-VENT MODELS
STATE SUPER HIGH EFFICIENCY Up To 96% Thermal GAS WATER HEATERS Efficiency RESIDENTIAL PREMIER POWER-VENT MODELS PREMIER POWER-VENT DV RESIDENTIAL GAS WATER HEATER The ideal choice for high-demand homes
More informationABSTRACT. aspects of potential waste heat recovery systems and the economics of installing them at selected survey factories.
ABSTRACT WASTE HEAT RECOVERY IN THE FOOD PROCESSING INDUSTRY W. L. Lundberg and J. A. Christenson Westinghouse Electric Corporation Advanced Energy Systems Division F. Wojnar H. J. Heinz Company U.S.A.
More informationWhy worry about your hot water system?
Why worry about your hot water system? Water heating probably accounts for 45 % of your annual household energy use. Most of us have electric storage hot water systems, which are often inefficient and
More informationCity of Cornwall Social Housing Division Top 10 Energy & Water Saving Tips. in Multi-Unit Residential Buildings
City of Cornwall Social Housing Division Top 10 Energy & Water Saving Tips in Multi-Unit Residential Buildings Duncan Hill Canada Mortgage and Housing Corporation Andrew Pride Minto Developments Inc. Energy
More information8 plumbing. plumbing. 2010 PulteGroup, Inc. All Rights Reserved.
8 90 2010 PulteGroup, Inc. All Rights Reserved. drains All the water you use leaves the home through a drain. Maintaining drains prevents clogging, overflows, water damage, and other problems. care and
More informationAPPENDIX A RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYSTEM
APPENDIX A RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYSTEM Because of the variable conditions encountered, it is impractical to lay down definite detailed rules of procedure for determining the sizes
More informationEnergy'Saving,'Thermal'Comfort'and'Solar'Power'Information'Sheet'
Energy'Saving,'Thermal'Comfort'and'Solar'Power'Information'Sheet' We ve prepared this information sheet to help you to minimise energy consumption and energy costs while maximising thermal comfort at home.
More informationSF15K SF05KSS, SF10KSS
Product Instruction Manual Speedflow SF05K, SF10K & SF15K SF05KSS, SF10KSS & SF15KSS Undersink unvented water heater V15.6/6 Version 3.2 Jan 2015 Thank you for purchasing a Hyco Speedflow unvented water
More informationHow Ground/Water Source Heat Pumps Work
How Ground/Water Source s Work Steve Kavanaugh, Professor Emeritus of Mechanical Engineering, University of Alabama Ground Source s (a.k.a. Geothermal s) are becoming more common as the costs of energy
More informationFederal Technology Alert
Federal Technology Alert A publication series designed to speed the adoption of energyefficient and renewable technologies in the Federal sector The U.S. Department of Energy requests that no alterations
More informationWater Heater Sizing TS 100 2 2 Saturday 2:15pm 5:15pm J. Joe Scott CPD, FASPE, LEED
Water Heater Sizing TS 100 2 2 Saturday 2:15pm 5:15pm J. Joe Scott CPD, FASPE, LEED Water Heater Sizing (to keep you out of hot water) What is a water heater? An immersion element in a bucket works, but
More informationHVAC: Cool Thermal Storage
HVAC: Cool Thermal Storage Thermal storage systems offer building owners the potential for substantial operating cost savings by using offpeak electricity to produce chilled water or ice for use in cooling
More informationRange Tribune HE Solar Unvented Direct and Indirect Cylinders
Range Tribune HE Solar Unvented Direct and Indirect Cylinders Range Tribune HE Solar cylinders have been designed specifically with Solar applications in mind and are based on the highly successful Range
More informationGreen 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 informationDrain Water Heat Recovery Characterization and Modeling. Charles Zaloum, Maxime Lafrance, John Gusdorf. -Final DRAFT-
Drain Water Heat Recovery Characterization and Modeling By: Charles Zaloum, Maxime Lafrance, John Gusdorf -Final DRAFT- Sustainable Buildings and Communities Natural Resources Canada Ottawa May 4, 2007
More informationFYI > California Title 24
FYI > California Title 24 Rinnai America Corporation ("RAC") prepared the below summary of California Title 24, primarily based on the California Energy Commission s 2013 Building Energy Efficiency Standards.
More informationLaundry Hot Water Systems
TECHNICAL BULLETIN HE-2020 Laundry Hot Water Systems Commercial/Institutional Applications using Helitherm Heat Exchangers AERCO INTERNATIONAL, INC. 159 PARIS AVE., NORTHVALE, NJ 07647 (201) 768-2400 FAX
More informationEnergy Saving by ESCO (Energy Service Company) Project in Hospital
7th International Energy Conversion Engineering Conference 2-5 August 2009, Denver, Colorado AIAA 2009-4568 Tracking Number: 171427 Energy Saving by ESCO (Energy Service Company) Project in Hospital Satoru
More informationEnergy-Saving Tips. Energy Saving Tips
Energy-Saving Tips Energy Saving Tips TABLE OF CONTENTS How Do You Spend Your Energy Dollars?.. 1 Easy Ways to Save... 2 Investing in Energy Savings... 6 EarthCents... 7 How Do You Spend Your Energy Dollars?
More informationSOLEL 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 informationWater Heater Dip Tubes-Why all the Fuss?
Water Heater Dip Tubes-Why all the Fuss? ************************************************************************************************************************ Re-printed from Opflow magazine, distributed
More informationPlumbing Installations. A homeowner guide to the City of Winnipeg plumbing requirements for a single-family dwelling
Plumbing Installations A homeowner guide to the City of Winnipeg plumbing requirements for a single-family dwelling February 2001 contents General Information 3 Inspection 4 New Drain and Vent Installations
More informationRenewable 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 informationWaste Heat Recovery through Air Conditioning System
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn : 2278-800X, www.ijerd.com Volume 5, Issue 3 (December 2012), PP. 87-92 Waste Heat Recovery through Air Conditioning
More informationIndirect-fired Steam & Boiler Water Heaters
Indirect-fired Steam & Boiler Water Heaters High Recovery ASME Constructed & Stamped Factory Packaged Applications Thermomaster water heating systems provide high recovery, tight temperature control and
More informationGEOTHERMAL HEAT PUMPS - TRENDS AND COMPARISONS - John W. Lund Geo-Heat Center
GEOTHERMAL HEAT PUMPS - TRENDS AND COMPARISONS - John W. Lund Geo-Heat Center Heat pumps are used where geothermal water or ground temperatures are only slightly above normal, generally 50 to 90 o F. Conventional
More informationData Center Energy Efficient Cooling Control Demonstration PIR 10 052. (formerly Federspiel Controls)
Data Center Energy Efficient Cooling Control Demonstration PIR 10 052 (formerly Federspiel Controls) Background 2009 PIER sponsored project resulted in the installation of intelligent supervisory control
More informationHot water supply, distribution and use
Guidance Leaflet Reducing use Hot supply, distribution and use All businesses use hot in some way, whether for domestic use, in the manufacturing process or for ancillary activities. As there are considerable
More informationHigh kw Electric Tankless Water Heater Troubleshooting Guide
Technical Service Bulletin High kw Electric Tankless Water Heater Troubleshooting Guide Models: WH17, WH27, WH36 AE115, AE125, (FD108 and higher) DANGER: ELECTRIC SHOCK ELECTRICITY IS EXTREMELY DANGEROUS.
More informationIn the average American home, water heating accounts
WATER HEATING In the average American home, water heating accounts for about 20% of total household energy consumption. In Virginia, the average household spends between $200 and $500 per year for heating
More informationNew or Remodeled Food Service Establishment Checklist**
ToTo Protect and Promote the Health and the Environment of the People of Kittitas County New or Remodeled Food Service Establishment Checklist** **Some items may not be required for limited food service
More informationBuilder Specifications for Solar Ready Homes
Builder Specifications for Solar Ready Homes This document specifies the essential elements required to make a new home ready for the future installation of roof-mounted solar domestic hot water and photovoltaic
More informationPLBG/GAS SAFETY Information Bulletin
PLBG/GAS SAFETY Information Bulletin November 2012 P/G-08-02-PLBG/GAS [Rev 3] Page 1 of 11 SUBJECT: REQUIREMENTS FOR COMBINATION HEATING SYSTEMS: DUAL PURPOSE WATER (POTABLE) HEATER (COMBO UNIT) Safety
More informationSTANDARD SPECIFICATION. for. Plumbing, Heating, Hot Water, Cold Water & Electrical work. Sussex Lodge London W2 & 16 Stanhope Terrace London W2
STANDARD for Plumbing, Heating, Hot Water, Cold Water & Electrical work undertaken by owners within the building known as Sussex Lodge London W2 & 16 Stanhope Terrace London W2 BPME Consulting Engineers
More informationINSTALLATION INSTRUCTIONS & HOME OWNERS MANUAL ECO 18 ECO 24 ECO 27 IMPORTANT SAFETY INFORMATION
INSTALLATION INSTRUCTIONS & HOME OWNERS MANUAL ECO 18 ECO 24 ECO 27 IMPORTANT SAFETY INFORMATION As when installing or using any high voltage electrical appliance, basic safety precautions should always
More information