1 1 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Preliminary Final Proposal Mechanical System Re-design and Breadth Topics Butler Memorial Hospital New Inpatient Tower Butler Healthcare Providers Butler, PA Advisor: Dr. William Bahnfleth
2 2 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Table of Contents Executive Summary... 3 Mechanical Summary... 4 Introduction... 4 Design Criteria... 4 Design Conditions... 5 Ventilation Requirements... 6 Mechanical Equipment Summary... 6 Proposal... 7 Introduction... 7 Dedicated Outdoor Air System... 8 Chilled Beams... 9 Exhaust Energy Recovery Water-Side Free Cooling Breadth Topics Electrical Structural MAE Breadth Summary Appendix A: References Appendix B: List of Tables and Figures List of Tables List of Figures Appendix C: Spring Schedule... 14
3 3 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Executive Summary The New Inpatient Tower at the Butler Memorial Hospital is a 209,000 square foot addition seated in Butler, Pennsylvania that has just been completed in July The eight story tower was built to house state of the art operating and recovery rooms. The primary means of heating, ventilation, and air-conditioning is done through the variable air volume system with reheat at the terminal boxes and supplementary finned tube radiation heating coils at the perimeter of patient rooms. After doing extensive research, it appears that the New Inpatient Tower at the Butler Memorial Hospital is a prime candidate for a dedicated outdoor air system. The current design calls for 54,000 CFM of ventilation air; however, only 28,000 CFM of ventilation is required by AIA guidelines. By decreasing the amount of ventilation air, chiller and boiler loads will be decreased, as well as air handling units and duct sizes. In order to supplement the dedicated outdoor air system, examining the use of chilled beam technology will be analyzed. The chilled beam technology will only be responsible for sensible loads created within the space. Two different options of chilled beams will be investigated; either an active chilled beam system or a passive chilled beam system. In order to saving additional energy with the dedicated outdoor air system, energy recovery and water-side free cooling will also be implemented. Two different options for energy recovery from exhaust air are a runaround glycol loop or a total heat recovery wheel. Both systems have pros and cons which will be analyzed further. Water-side free cooling will utilize the cooling tower to alleviate some of the burden imposed on the chillers during temperate seasons. An investigation will be done to evaluate the impact of the mechanical system re-design on the electrical and structural systems. Structural members on the roof will be re-sized and priced to account for lower roof loads due to smaller air handling equipment. An electrical analysis will also be done in order to tie the additional pumps and DOAS air handlers into the existing power distribution.
4 4 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Mechanical Summary Introduction The New Inpatient Tower at the Butler Memorial Hospital serves as the newest attraction to the hospital, and at 209,000 square feet of space it houses much of the hospital s activity. The new tower includes many public spaces including a chapel, retail space, a café, waiting areas, and conference rooms on the main level. Below the main level is mostly mechanical space and storage; however, the focal point of the tower lies on the floor above. Eight state of the art operating rooms are the main attraction of the entire addition. The remainder of the tower is comprised of recovery rooms, critical care units, and patient rooms for those recovering from surgery. Design Criteria When designing the New Inpatient Tower, engineers and architects took a very direct approach: build a patient tower that will be energy efficient, reliable, and comfortable to patients and families. When designing the HVAC systems, reliability and comfort were the two most important factors. Any HVAC system looks to provide comfortable temperature and humidity levels, which this system easily accomplishes. Every main piece of equipment within the mechanical system has inherent redundancy. Due to the loop system and other design specifications, the hospital can lose an air handler, cooling tower, primary pump, secondary pump, chiller, or boiler and is still able to meet the majority of loads under normal operating conditions. It should be noted that there were no design influences based upon the site, rebates, or tax relief. Due to the nature of the hospital, a great deal of the thermal and energy loads are a direct effect of lighting and hospital equipment operation. Both of these areas are essential for the tower to function and are fairly constant loads unable to be altered. Variable loads which occur are due to infiltration, conditioning of ventilation air, solar gain, and mechanical equipment loads. Designers oversized the outside air fraction to ensure proper indoor air quality providing patients and staff with high quality supply air. The building is designed for every space to receive 33% outside air at design loads. The minimum ventilation rates used by engineers also significantly exceeds ASHRAE Standard 62.1, reinforcing the fact that air quality within the tower is a large concern. Solar gain during the cooling season is not a large problem for the inpatient tower. The hospital design is fairly conservative when it comes to fenestration, which will lower the effects of solar gain. Also, the majority of fenestration is located on the North and Northwest facades of the building with only a small portion of exterior glass occurring along the southern face.
5 5 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Mechanical equipment operation accounts for a large portion of the overall energy consumption. The system could very well be sized down to become more efficient, however design engineers were more focused and reliability and redundancy than efficiency. This approach is understandable since there will be human lives in jeopardy every day, demanding certain environmental conditions for the best chance of survival. An extremely important facet of the hospital design is linked to the (8) operating rooms on the third floor. These operating rooms are served by two identical air handlers and are 100% redundant in the case that one air handler malfunctions. The two air handlers are fed by a 120 ton scroll chiller supplying 34 F chilled water in order to keep the operating rooms at exactly 60 F year round. The system is backed up by the (2) main chillers in an emergency case. Hepa filters at the terminal boxes also ensure the highest quality air within the operating rooms. The mechanical system also had to be designed for the overhanging floor on the third level. As a result of the third floor overhanging the second, extra thermal loads coming through the floor had to be accounted for. The perimeter of the tower is also home to the majority of patient rooms and subject to extra heating loads at the perimeter and windows. In order to give patients thermal control and to account for the additional envelope loads, designers implemented finned tube radiant coils along the perimeter of patient rooms and in the floor of the overhanging third level. Design Conditions The weather data and outdoor conditions were taken from the design data within ASHRAE Fundamentals 2009 and are shown below in Table 1. Indoor design conditions were taken from the design documents basis of design. The driftpoint was also specified. Outdoor Design Conditions Location Butler, PA Summer Dry Bulb ( F) 89 Summer Wet Bulb ( F) 73 Winter Dry Bulb ( F) 2 Carbon Dioxide Level 400 Table 1: Outdoor Design Conditions As depicted in Table 2 below, the thermostat setpoints for the hospital vary depending upon which space we are examining. The bulk of the hospital attempts to keep the inside environment within the thermal comfort region specifying a set point 75 F in the summer and 72 F in the winter and 50% relative humidity. However, the operating rooms are under more stringent requirements and require that the environment is maintained year round at 60 F and 50% relative humidity to reduce the chance of infection and bacteria growth within the operating rooms.
6 6 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Typical Thermostat Parameter Cooling Dry Bulb ( F) 75 Heating Dry Bulb ( F) 72 Relative Humidity (%) 50 Cooling Driftpoint ( F) 77 Heating Driftpoint ( F) 70 Operating Room Thermostat Parameter Cooling Dry Bulb ( F) 60 Heating Dry Bulb ( F) 60 Relative Humidity (%) 50 Cooling Driftpoint ( F) 62 Heating Driftpoint ( F) 58 Table 2: Indoor Design Conditions Ventilation Requirements After analyzing the entire ventilation system of the Butler Memorial Hospital, it has been determined that every space exceeds the required amount of ventilation air according to ASHRAE Std As noted earlier, the bulk of the ventilation is done by AHU-1, 2, & 3 which comprise a loop sytem serving every area except for the operating rooms. The total outside air intake V ot = (14,366)/0.9 = 15,962 CFM according to standard The design calls for 53,812 CFM of outside air, and 153,848 CFM of total supply air. The as designed outdoor airflow rate is considerably higher, likely due to engineers using an outside airflow rate of 20 CFM/person and AIA guidelines which are well above ASHRAE standards. Due to the fact that AHU-1, 2, & 3 are each 62,000 CFM resulting in a total of 186,000 CFM, the air handlers are more than capable of meeting the load. The operating rooms require a minimum of 2,307 CFM of outside air according to standard 62.1, but are designed for 9,682 CFM of outside air and 29,340 CFM of total supply air. AHU-4 & 5 are both 18,500 CFM, resulting in a combined 37,000 CFM which can easily meet the required load. It is apparent that the designers oversized all the air handlers to ensure the best indoor air quality and to improve reliability. They coupled AHU-1, 2, and 3 to improve redundancy in case one air handler fails. They also designed the building to supply a great deal more outside air than required by ASHRAE to ensure patients receive the finest air quality. All spaces have an outside air fraction of Mechanical Equipment Summary The primary heating, air conditioning, and ventilation is performed by a variable air volume system equipped with (3) 62,000 CFM rooftop air handlers. These three air handlers comprise a loop system which serves every area of the hospital except for operating rooms and a few mechanical rooms. Due to the nature of the loop system, all 3 air handlers are coupled feeding every diffuser, there is natural redundancy built into the mechanical system. (2) 400 ton centrifugal chillers with variable speed drives provide AHU-1, 2, & 3 with cold water used for dehumidification and cooling via (2) constant
7 7 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option volume primary chilled water pumps and (2) VSD secondary pumps. A central rooftop cooling tower serves as the primary means of cooling the condenser water which exits the two centrifugal chillers. Rooftop air handling units 4 and 5 are located on a lower level roof (Floor 5) and provide the necessary heating, ventilating, and air-conditioning to the (8) operating rooms which are located on the 3 rd floor. The operating room air handlers are serviced by an adjacent 119 ton air-cooled scroll chiller supplying 34 F water. The lower temperature system is backed up by the primary chillers in case of emergency; 45 F primary water can still be supplied. Air Handling Units 6, 7, & 8 are all smaller units which serve specific mechanical rooms with an extra need for cooling. On the heating side, (2) 215 BHP combustion gas/oil-fired hot water boilers supply all of the heating water for the entire building: this includes heating water to the air handling unit heating coils, unit heaters used for reheat within terminal boxes, duct heating coils, radiant ceiling panels around the perimeter of patient rooms, and finned tube radiation in the soffit/plenum area above the second floor to keep the cantilevered floor warm. Two constant volume primary pumps and (2) VSD secondary pumps circulate the heating water. Proposal Introduction As noted in previous reports the hospital has overdesigned the entire mechanical system and presents multiple avenues to explore when re-designing the mechanical system. Due to the fact that the current system is variable air volume with many of the components and designed airflows well above baseline requirements, a number of ideas have been researched to make the hospital more energy efficient, reliable, and easier to maintain. It should be noted that due to the critical nature of the mechanical system supplying the operating rooms, only the (3) primary air handlers will be altered. The first implementation will be to eliminate the variable air volume system including the (3) main air handlers and all of the associated terminal boxes. In lieu of using a VAV system with 33% outside air, a dedicated outdoor air system will be instituted providing the hospital with 100% fresh, clean outdoor air to all spaces within the hospital. Dedicated outdoor air systems work under the principal of conditioning the minimum requirement of ventilation air and supplying it directly to the space. Because the DOAS air handler can only remove the latent and sensible heat from the entering outside air, a parallel system will need to be implemented to account for sensible loads within the space. The use of chilled beams will be researched and discussed to account for the extra sensible load created within the space. Inherently, a hospital exhausts a great deal of the air due to restrooms, both public and in patient rooms, as well as janitor closets, and specialty medical equipment rooms. The current design simply discharges this air into the environment. The re-design will attempt to transfer the enthalpy from the conditioned exhaust air to that of the incoming outdoor air.
8 8 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Another potential savings of a dedicated outside air system with chilled beams can be achieved by the use of water-side free cooling. Water-side free cooling works extremely well with chilled beams. Water-side free cooling works as an economizer during mild or cold temperatures allowing the chiller to turn off thereby saving mechanical energy. After all changes are implemented a Trane Trace analysis will be run to quantify the overall energy savings of the redesign. First costs of the current system as well as the re-designed system will also be evaluated. After analyzing the first cost and operational costs of both designs, a payback period analysis will be performed. Throughout the process, feasibility studies and integration will be incorporated to ensure that the final product is comprehensive and constructible. Dedicated Outdoor Air System After analyzing the Trane Trace energy model it is clear that a great majority of the heating and cooling load within the hospital is a result of conditioning the ventilation air. The amount of ventilation air being introduced into the hospital is well above the minimum requirements set forth by AIA guidelines. As designed, the hospital supplies 53,812 CFM of outside air; however the minimum requirements set forth by AIA requires only 28,036 CFM of outside air be supplied for ventilation. Therefore the overall amount of ventilation air can be cut by almost one half, which will also greatly reduce the load imposed on the cooling and heating systems. The hospital is currently transporting roughly 154,000 CFM of supply air through the duct work. By switching to a dedicated outdoor air system, only 28,036 CFM of outdoor air will need to be supplied therefore greatly reducing the amount of fan energy required and duct sizes within the hospital. As depicted in Figure 1 below, almost 20% of the overall energy usage within the hospital is due to the supply fans. By decreasing the airflow, the size of the air handlers and supply fans will also be minimized which will save energy and money during operation and first cost. Figure 1: Energy Consumption Summary
9 9 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option A common problem among variable air volume systems is the failure to deliver adequate amounts of ventilation air at part loads. Because the dedicated outdoor air system is a constant volume system and always supplies the same amount of ventilation air, this problem is avoided and indoor air quality remains high. Chilled Beams A DOAS air handler will condition the ventilation air by removing sensible and latent heat from incoming outdoor air during the summer and adding sensible and latent heat to the outdoor air during the winter. With this being said, although the DOAS air handler can meet the entire latent and sensible load from the outside air, a parallel system must also be installed to meet the demand of sensible loads created within the space. In order to meet the added demand for sensible heat transfer, the implementation of chilled beams will be studied. There are two types of chilled beams, active and passive. As depicted in Figure 2 an active chilled beam is much like a cooling coil which induces high velocity supply air through it and then delivers the air to the room. Referencing Figure 3, a passive chilled beam is simply a radiant panel located in the ceiling decoupled from the ventilation system operating solely on radiation principles. Figure 2: Active Chilled Beam Figure 3: Passive Chilled Beam Chilled beams can be used for both supplemental heating and cooling purposes. This can be done with a variety of piping arrangements. The two arrangements that will be studied include a 4 pipe system which contains a supply and return line for both heating and cooling, and a 2 pipe changeover which will allow the same piping to carry either heating water or cooling water depending on the season. Potential advantages of chilled beams is the elimination of wasteful terminal reheat boxes, better air mixing within the space, and better utilization of heat transfer. As a comparison 1 cubic foot of water has a heat capacity of 20,050 J. One cubic foot of air at STP has a heat capacity of 37 J K. After accounting for differences in density it is apparent that a 1 diameter pipe can carry the same amount of energy as an 18 x 18 duct. Using water instead of air to heat or cool a space is much more efficient, not to mention space savings due to reduced duct sizes and hydronic piping.
10 10 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Exhaust Energy Recovery As specified in ASHRAE Standard 90.1, any mechanical system using 100% outside air must have some means of energy recovery. In order to account for this and to save energy, a few different options will be analyzed when looking at energy recovery. The hospital currently exhausts a great deal of air due to the abundance of restrooms, janitor closets, and medical laboratory spaces. The current design simply discharges all exhaust air to the atmosphere. One of the options analyzed for heat recovery will be a glycol filled run-around loop. This system works well for exhaust ducts which are not in close proximity to supply ductwork, which is the case in the New Inpatient Tower. However, because the loop is distributed throughout the building and relies on heat exchangers in both airways, it lacks in efficiency and performance. Another method of heat recovery is via a total heat recovery wheel. A heat recovery wheel can transfer latent and sensible heat from one airway to the other with much higher efficiency. The only downfalls of the heat recovery wheel are proximity restrictions between the two airways and possible contamination of supply air from the exhaust air. An example of an energy recovery wheel operating in the summer is shown below in Figure 4. Figure 4: Heat Recovery Wheel Water-Side Free Cooling Water-side free cooling is an economizer method which should work very well with the DOAS chilled beam system. Water-side free cooling refers to using the cooled condenser water from the cooling tower as a chilled water source to cool a load, therefore eliminating the need for a chiller. Water-side free cooling works best when the outdoor wet bulb temperature is around 40 F for typical applications that desire to produce average chilled water temperatures. However, a chilled beam uses water temperatures between 55 F and 58 F which is much higher than typical applications. Because the chilled beam uses higher temperature water, water-side free cooling will be available for a greater portion of the year which should reduce the amount of chiller hours and save energy.
11 11 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Breadth Topics Electrical An electrical breadth topic will be investigated to determine the impact of the new mechanical system on electrical distribution. Because some of the equipment will be downsized or eliminated and other equipment added, a new inspection of the power distribution will need to be analyzed. Over current protection, feeder sizes, and feasibility issues will need to be examined and resolved. A revised single line diagram will be laid out to aid in the conceptual schematic of the new design. Structural A structural breadth will also be scrutinized to determine the effects of the mechanical re-design on the structural support system. The (3) main rooftop air handlers will be greatly reduced in size, and perhaps even eliminated in some cases. Due to the reduced load on the roof, an analysis of the structural system will be performed to resize roofing members and distinguish any cost savings that may be a result of the re-design. MAE Breadth Throughout the final report, a number of references will be made to items pertaining to the MAE curriculum. Calculating lifecycle costs and payback periods will be performed, which is a direct correlation to the material learned AE 558 Central Heating. Water-side free cooling is a topic discussed in AE 557 Central Cooling and will be an integral part of the final thesis presentation. Lastly, the improvements in indoor air quality as a result of the DOAS system ties in nicely with AE 552 Indoor Air Quality. Summary In conclusion, an overall mechanical system re-design will be implemented by removing the current variable air volume system and designing a new dedicated outdoor air system with a parallel chilled beam secondary system to account for sensible loads within the space. Either a heat recovery wheel or runaround glycol loop will be utilized to recovery energy from the exhaust air. The new system should result in lower utility bills, more plenum space, smaller duct work and air handlers, and ultimately a reduction in costs and energy usage. An examination of the mechanical system will allow further analysis into the impact that the mechanical re-design has on the electrical and structural components of the building. New designs for both will be implemented to account for the change in the mechanical design. Overall costs and energy savings or surpluses will be provided at the end of each analysis.
12 12 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Appendix A: References 1. Mumma, PhD, PE, Stanley. Dedicated Outdoor Air Systems. February The Pennsylvania State University DOAS. 7 Dec Mumma, PhD, PE, Stanley. Designing Dedicated Outdoor Air Systems. ASHRAE Journal 43.5 (2001): Jeong, PhD, Jae-Wong. Designing a Dedicated Outdoor Air System with Ceiling Radiant Cooling Panels. ASHRAE Journal (October 2006): Justin, Thomas. Chilled Beams are Cool. Design and Architecture. (11/5/05) 5. ASHRAE Fundamentals. ASHRAE, Atlanta. 6. Barnet B.. Chilled Beams for Labs: Using Dual Energy Recovery. ASHRAE Journal. (December, 2008).
13 13 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Appendix B: List of Tables and Figures List of Tables Table 1: Outdoor Design Conditions... 5 Table 2: Indoor Design Conditions... 6 List of Figures Figure 1: Energy Consumption Summary... 6 Figure 2: Active Chilled Beam... 9 Figure 3: Passive Chilled Beam... 9 Figure 4: Heat Recovery Wheel... 10
14 14 Butler Memorial Hospital New Inpatient Tower Senior Capstone Project Mechanical Option Appendix C: Spring Schedule
Mechanical Systems Proposal revised Prepared for: Dr. William Bahnfleth, Professor The Pennsylvania State University, Department of Architectural Engineering Prepared by: Chris Nicolais Mechanical Option
HVAC Systems: Overview Michael J. Brandemuehl, Ph.D, P.E. University of Colorado Boulder, CO, USA Overview System Description Secondary HVAC Systems Air distribution Room diffusers and air terminals Duct
GENERAL: This section provides general standards for overall sizing and design of Heating, Ventilating, and Air Conditioning (HVAC) systems. Other sections contain specific standards for each system per
Presentation Outline Common Terms / Concepts HVAC Building Blocks Plant Level Building Blocks Description / Application Data Green opportunities Selection Criteria Air Distribution Building Blocks same
HYDRONIC RADIANT CEILINGS and CHILLED BEAMS Low Mass Heating and Cooling Learning Objectives How does radiant heating and cooling work how does low mass differ from high? What are hydronic radiant panels?
APPLICATION GUIDE Comparison of Latent Cooling Performance of Various HVAC systems in a Classroom Application Section Comparison of Latent Cooling Performance of Introduction Most commercial HVAC systems
Lesson 36 Selection Of Air Conditioning Systems Version 1 ME, IIT Kharagpur 1 The specific objectives of this chapter are to: 1. Introduction to thermal distribution systems and their functions (Section
Advanced Energy Design Guide LEED Strategies for Schools and High Performance Buildings Today s Presenters Stephen Koontz, LEED AP Energy Services Leader Tampa Bay Trane Allen Irvine General Sales Manager
Comparing Energy Savings of Different VAV Systems Prepared By: Martyn Dodd email@example.com EnergySoft LLC 1025 5th Street, Suite A Novato, CA 94945 415-897-6400 www.energysoft.com Last Modified: March
ASHRAE Student System Selection Competition New Office Building - Nashville, Tennessee Spring 2009 Kansas State University Department of Architectural Engineering and Construction Science 240 Seaton Hall
DATA CENTER COOLING INNOVATIVE COOLING TECHNOLOGIES FOR YOUR DATA CENTER DATA CENTERS 2009 IT Emissions = Aviation Industry Emissions Nations Largest Commercial Consumers of Electric Power Greenpeace estimates
for Williams Building Diagnostics, LLC 305 15 th Street West Bradenton, FL 34205 Report April 13, 2015 Moses & Associates, Inc. 2209 NW 40 th Terrace, Suite A Gainesville, FL 32605 FL License EB-0003097
The Different Types of Air Conditioning Equipment for IT Environments By Tony Evans White Paper #59 Executive Summary Cooling equipment for an IT environment can be implemented in 10 basic configurations.
PART 1 - GENERAL 1.01 OVERVIEW A. This section supplements Design Guideline Element D3041 on air handling distribution with specific criteria for projects involving design of a Data Center spaces B. Refer
PART 1: GENERAL 1.01 General Requirements A. This standard is intended to provide useful information to the Professional Service Provider (PSP) to establish a basis of design. The responsibility of the
HVAC Processes Lecture 7 Targets of Lecture General understanding about HVAC systems: Typical HVAC processes Air handling units, fan coil units, exhaust fans Typical plumbing systems Transfer pumps, sump
VAV BOX REHEAT SELECTION KRUEGER EXCELLENCE IN AIR DISTRIBUTION Page # 1 VAV terminals provide a measured quantity of conditioned air to a space, in response to a control signal from a thermostat or room
HVAC Systems and Indoor Air Quality Douglas K. Spratt, M.Sc., P.Eng. The 5 Senses Architecture Electrical Structural Mechanical Hearing Seeing Smelling Feeling Tasting HVAC Systems are Dynamic Heat Gains
INTRODUCTION HVAC BASICS AND HVAC SYSTEM EFFICIENCY IMPROVEMENT SECTION O HVAC systems or Heating, Ventilating and Air-Conditioning systems control the environment for people and equipment in our facilities.
Glossary of Heating, Ventilation and Air Conditioning Terms Air Change: Unlike re-circulated air, this is the total air required to completely replace the air in a room or building. Air Conditioner: Equipment
APPLICATION GUIDE Moisture Management in Waterborne Climate Systems Contents Introduction 3 WBCS Concept 3 Condensation 4 Moisture Sources in the Space 4 Impact of a High Moisture Load 5 Designing to Manage
ENHANCED LABORATORY HVAC SYSTEM INTRODUCTION Since the early 1980's the attention to more energy efficient laboratory designs has been on the rise due to the increase in energy cost and the emergence of
Verizon SMARTS Data Center Design Phase 1 Conceptual Study Report Ms. Leah Zabarenko Verizon Business 2606A Carsins Run Road Aberdeen, MD 21001 Presented by: Liberty Engineering, LLP 1609 Connecticut Avenue
Condensing Boiler Efficiency Date: July 17, 2012 PRES E NT ED BY DO N L E O NA RDI LE O N A RD I I NC. HV AC T RAI N I N G & C ON SU LT IN G Concepts 1 The current state of evolution in boiler design 2
Optimizing 100% Outside Air Systems with Heat Pipes Dr. Michael K. West, PE 1 Dr. Richard S. Combes, PE 2 Advantek Consulting / Melbourne, Florida Introduction To meet increasingly rigorous building codes
ENERGY EFFICIENT HVAC DESIGN FOR WARM-HUMID CLIMATE CLIMATE Overview of Design Conditions: Air conditioning system consumes most of the energy that a building needs in its operation. In order to reduce
1932 Lexington Houston, Texas 77098-4220 (713) 524-4877 The purpose for this information is to provide a better understanding of the HVAC equipment, components, designs, and installations, of HVAC system
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
Design Options for HVAC Distribution Systems Course No: M06-017 Credit: 6 PDH A. Bhatia Continuing Education and Development, Inc. 9 Greyridge Farm Court Stony Point, NY 10980 P: (877) 322-5800 F: (877)
MSV: Square Footage: 24,844 No. of Floors: 1 Year Built: 1963 Type of Use: Lounge and dining area open all night for snacks Steam Water-cooled condenser, 50-Ton York unit with a 6 cylinder-reciprocating
Chilled Beam Solutions ADVANCING THE SCIENCE OF AIR DISTRIBUTION k-12 education Redefine your comfort zone. www.titus-hvac.com woodgrains dual-function energy solutions table of contents The CBAL-24 is
Defining Quality. Building Comfort. Precision Air Conditioning Today s technology rooms require precise, stable environments in order for sensitive electronics to operate optimally. Standard comfort air
3. For all except very noise sensitive applications, select VAV boxes for a total (static plus velocity) pressure drop of 0.5 H2O. For most applications, this provides the optimum energy balance (see the
ENERGY EFFICIENT HVAC DESIGN FOR COMPOSITE CLIMATE Overview of Design Conditions: Air conditioning system consumes most of the energy that a building needs in its operation. In order to reduce energy consumption
COMMERCIAL HVAC AIR-HANDLING EQUIPMENT Central Station Air Handlers Technical Development Programs (TDP) are modules of technical training on HVAC theory, system design, equipment selection and application
EnergyPro Building Energy Analysis Assisted Living Building EnergyPro Building Energy Analysis for an assisted living building Project Scope The purpose of the EnergyPro energy model was to evaluate the
Air Conditioning Clinic Introduction to HVAC Systems One of the Systems Series February 2012 TRG-TRC018-EN Introduction to HVAC Systems One of the Systems Series A publication of Trane Preface Introduction
HVAC Simplified Approach Option Part I Project Address: City: HVAC System Designer of Record: Date: Zip: Qualification The building is 2 stories or less in height and has a gross floor area is less than
LASER Latent And Sensible Energy Reduction Latent And Sensible Energy Reduction For Outside Air Innovent LASER Packaged Fresh Air Conditioning Units Innovent LASER units provide both sensible and latent
Makeup Air For Exhaust Systems In Tight Houses Tony Jellen Engineering Projects PA Housing & Land Development Conference February 23, 2012 Effects of Kitchen Ventilation on Residential Dwellings Anthony
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
COMPARATIVE LIFE-CYCLE ANALYSIS OF ENERGY-EFFICIENCY MEASURES AT TVA S CHATTANOOGA OFFICE COMPLEX: PHASE II RESULTS & FINAL DESIGN Umesh Atre Innovative Design Inc 850 W Morgan St Raleigh, NC 27603 firstname.lastname@example.org
Air conditioning applications can be broadly categorized as either standard or critical. The former, often called comfort cooling, traditionally just controlled to maintain a zone setpoint dry bulb temperature
Introduction: Role of Economizers in Dedicated Outdoor Air Systems A question that frequently arises when a dedicated outdoor air system (DOAS) (Mumma, 2001) is discussed, particularly when the parallel
Opening Throttled Discharge Valves This 21-story building, constructed in 1997, is located in Oregon and contains 589,000 gross square feet of mostly office occupancy. The HVAC system includes six large
Residential HVAC System Sizing William P. Goss University of Massachusetts, Amherst, Massachusetts, USA Corresponding email: email@example.com SUMMARY Heating, ventilating and air-conditioning (HVAC)
MECHANICAL SYSTEMS DESIGN Andrew Bridges, Ben Hollon, Sean Kolich, Weston Arbogast, Kaitlin Page Andrew Bridges, Ben Hollon, Sean Kolich, Weston Arbogast, Kaitlin Page Team 2010 2 PRESENTATION OVERVIEW
PSUAE MECHANICAL PROJECT PROPOSAL REDESIGN PROJECT Nicholas B Scheib 2010 M e c h a n i c a l O p t i o n - IP Table of Contents Executive Summary... 2 Project Summary... 3 Existing Mechanical System Summary...
Data Center Rack Level Cooling Utilizing Water-Cooled, Passive Rear Door Heat Exchangers (RDHx) as a Cost Effective Alternative to CRAH Air Cooling Joshua Grimshaw Director of Engineering, Nova Corporation
2005, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (www.ashrae.org). Reprinted by permission from ASHRAE Journal, (Vol. 47, No. 9, September 2005). This article may not
Bring the fresh in. Dedicated Outside Air Systems The inside story on outside air. On average, we breathe in 3,400 gallons of air each day. Ambient indoor air pollution is a major problem, affecting health
PDH Course M199 HVAC Calculations and Duct Sizing Gary D. Beckfeld, M.S.E., P.E. 2007 PDH Center 2410 Dakota Lakes Drive Herndon, VA 20171-2995 Phone: 703-478-6833 Fax: 703-481-9535 www.pdhcenter.com An
1 1. What percent of a commercial business s energy usage comes from their HVAC system? A. 13% B. 23% C. 33% D. 43% E. 53% 2. How much money do commercial facilities spend per square foot on energy costs
Case Study: Innovative Energy Efficiency Approaches in NOAA s Environmental Security Computing Center in Fairmont, West Virginia Prepared for the U.S. Department of Energy s Federal Energy Management Program
Guide to Minimizing Compressor-based Cooling in Data Centers Prepared for the U.S. Department of Energy Federal Energy Management Program By: Lawrence Berkeley National Laboratory Author: William Tschudi
Components HVAC General System Selection Life Cycle Cost Analysis Outdoor Air Design Values Indoor Air Design Values Outdoor Air Ventilation Welding Ventilation Temperature Control Systems Ductwork HVAC
HEATING, VENTILATION & AIR CONDITIONING as part of the Energy Efficiency Information Grants Program Heating and cooling can account for approximately 23 % of energy use in pubs and hotels 1. Reducing heating
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
ENVIROCENTER PHASE II JESSUP, MARYLAND TECHNICAL REPORT 1 ASHRAE STANDARDS 62.1 and 90.1 ANALYSIS BY CHRISTOPHER LORENZ MECHANICAL, FOR DR. BAHNFLETH SUBMITTED SEPTEMBER 23rd 2011 TABLE OF CONTENTS 2 EXECUTIVE
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
HVAC Simplified Approach Option Part I Project Address: City: HVAC System Designer of Record: Date: Zip: Qualification The building is 2 stories or less in height and has a gross floor area is less than
HVAC Technologies for Building Energy Efficiency Improvements 2013 National Symposium on Market Transformation Richard Lord Carrier Fellow HVAC Industry Challenges and Issues Ozone Deletion Global Warming
Part 1 General 1.1 Summary.1 Unless otherwise indicated, follow the standards below when specifying heating, ventilation and air conditioning (HVAC) work. These standards are not intended to restrict or
PDHonline Course M147 (4 PDH) Design Options For HVAC Distribution System Instructor: A. Bhatia, B.E. 2012 PDH Online PDH Center 5272 Meadow Estates Drive Fairfax, VA 22030-6658 Phone & Fax: 703-988-0088
COMMERCIAL HVAC EQUIPMENT Coils: Direct Expansion, Chilled Water, and Heating Technical Development Program Technical Development Programs (TDP) are modules of technical training on HVAC theory, system
HOT & COLD Basic Thermodynamics and Large Building Heating and Cooling What is Thermodynamics? It s the study of energy conversion using heat and other forms of energy based on temperature, volume, and
HOW TO CONDUCT ENERGY SAVINGS ANALYSIS IN A FACILITY VALUE ENGINEERING STUDY Benson Kwong, CVS, PE, CEM, LEED AP, CCE envergie consulting, LLC Biography Benson Kwong is an independent consultant providing
Glossary of HVAC Terms Heating, Ventilation and Air Conditioning (HVAC) is a major sub- discipline of mechanical engineering. The goal of HVAC design is to balance indoor environmental comfort with other
2013 Building Energy Efficiency Standards Page 162 SECTION 140.4 PRESCRIPTIVE REQUIREMENTS FOR SPACE CONDITIONING SYSTEMS A building complies with this section by being designed with and having constructed
Active & Passive Beams Active & Passive Beams Introduction Beam systems are an alternative to traditional all-air conditioning systems. Beams use water to move energy through a building and service the
HVAC Checklist - Long Form Page 1 of 14 Appendix B discusses HVAC system components in relation to indoor air quality. utside Air Intake Location pen during occupied hours? Unobstructed? Standing water,
KU DESIGN GUIDELINES APPENDIX XVI RECOMMENDED BAS I/O CONTROL POINTS BY EQUIPMENT / SYSTEM AIR HANDLING UNITS... 1 CHILLERS... 2 COOLING TOWERS... 2 CLOSED LOOP COOLERS... 2 MISCELLANEOUS SUPPLY FANS...
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
Commissioning - Construction Documents (Page 1 of 6) A. General Information Climate Zone: Building Type: Conditioned Area (sf): Reviewer's Name: Reviewer's Agency: Note: Design Review for each system/subsystem
Copyright 24, American Society of Heating, Refrigerating & Air-Conditioning Engineers, Inc., 79 Tullie Circle NE, Atlanta, GA. 3329. Reprinted by permission from the September 24 Issue of ASHRAE Journal
Enclosed Football Stadium Design History and Lessons Learned Robert L. Towell, P.E., LEED AP, QCxP firstname.lastname@example.org CxE Group LLC St. Louis, Missouri 314-436-6543 With thanks to the St. Louis Convention
Subtropical Cities September 2006 Design for Energy Efficiency in Commercial Buildings in Queensland Contents Typical Building Constraints & Requirements Understanding Energy Consumption in Buildings HVAC
HVAC Characteristics Information on the characteristics of the heating, ventilation, and air conditioning (HVAC) system(s) in the entire BASE building including types of ventilation, equipment configurations,
Radiant Ceiling Panels Radiant ceiling panels provide uniform, draftless heating which allows utilization of the total interior, even locations where occupants are seated adjacent to large areas of glass.
Energy, Expertise and Environment with Fläkt Woods Fläkt Woods Building Future Saving energy in building ventilation You must save 20% on energy before 2020. Following the Kyoto protocol the European Union
Dehumidification Design Using Data-Center Heat Utilizing free heat from a server room was the concept behind an air-handling system in a college-campus building Considerable energy savings are possible
NEBB STANDARDS SECTION-8 AIR SYSTEM TAB PROCEDURES 8.1 INTRODUCTION Testing, adjusting, and balancing of HVAC systems can best be accomplished by following a series of systematic procedures. The NEBB TAB
CHAPTER 4 LOAD CALCULATIONS 4.1 CONTEXT The accurate calculation of heating and cooling loads is essential to provide a sound bridge between fundamental building design decisions and an operating building.
COMMERCIAL HVAC CHILLER EQUIPMENT Air-Cooled Chillers Technical Development Programs (TDP) are modules of technical training on HVAC theory, system design, equipment selection and application topics. They