Comparison Of Energy Efficiency Between Variable Refrigerant Flow Systems And Ground Source Heat Pump Systems

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Comparison of Energy Efficiency Between Variable Refrigerant Flow Systems and Ground Source Heat Pump Systems

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Comparison of Energy Efficiency Between Variable Refrigerant Flow Systems and Ground Source Heat Pump Systems by :

Download or read book Comparison of Energy Efficiency Between Variable Refrigerant Flow Systems and Ground Source Heat Pump Systems written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With the current movement toward net zero energy buildings, many technologies are promoted with emphasis on their superior energy efficiency. The variable refrigerant flow (VRF) and ground source heat pump (GSHP) systems are probably the most competitive technologies among these. However, there are few studies reporting the energy efficiency of VRF systems compared with GSHP systems. In this article, a preliminary comparison of energy efficiency between the air-source VRF and GSHP systems is presented. The computer simulation results show that GSHP system is more energy efficient than the air-source VRF system for conditioning a small office building in two selected US climates. In general, GSHP system is more energy efficient than the air-source VRV system, especially when the building has significant heating loads. For buildings with less heating loads, the GSHP system could still perform better than the air-source VRF system in terms of energy efficiency, but the resulting energy savings may be marginal.

Variable Refrigerant Flow Systems

Author : Napoleon Enteria
Publisher : Springer Nature
ISBN 13 : 9811968330
Total Pages : 251 pages
Book Rating : 4.8/5 (119 download)

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Book Synopsis Variable Refrigerant Flow Systems by : Napoleon Enteria

Download or read book Variable Refrigerant Flow Systems written by Napoleon Enteria and published by Springer Nature. This book was released on 2023-01-31 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book compiles the latest research, development, and application of VRF systems with contributions from various experts who pioneered and contributed to the development of the VRF system. This book presents the fundamental issues related to the real application and behaviour of the VRF system based on the long-term monitoring of the installed system. With our experience of pandemic which COVID-19 is an airborne, the spread of the virus is very fast. With this, the heating, ventilating and air-conditioning (HVAC) system is a major player in the maintenance and control of indoor environment to minimize the spread of the virus. As the variable refrigerant flow (VRF) system is a versatile HVAC system in which it can operate at different conditions, the application of the VRF system is very important to control the indoor environmental conditions. Thus, the publication of this book is important with the present situation and the future possible situation which the control of indoor spaces is very important. With this, this book will serve as a reference for building designer, contractors, building regulators and students.

Compare Energy Use in Variable Refrigerant Flow Heat Pumps Field Demonstration and Computer Model

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (971 download)

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Book Synopsis Compare Energy Use in Variable Refrigerant Flow Heat Pumps Field Demonstration and Computer Model by :

Download or read book Compare Energy Use in Variable Refrigerant Flow Heat Pumps Field Demonstration and Computer Model written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Variable Refrigerant Flow (VRF) heat pumps are often regarded as energy efficient air-conditioning systems which offer electricity savings as well as reduction in peak electric demand while providing improved individual zone setpoint control. One of the key advantages of VRF systems is minimal duct losses which provide significant reduction in energy use and duct space. However, there is limited data available to show their actual performance in the field. Since VRF systems are increasingly gaining market share in the US, it is highly desirable to have more actual field performance data of these systems. An effort was made in this direction to monitor VRF system performance over an extended period of time in a US national lab test facility. Due to increasing demand by the energy modeling community, an empirical model to simulate VRF systems was implemented in the building simulation program EnergyPlus. This paper presents the comparison of energy consumption as measured in the national lab and as predicted by the program. For increased accuracy in the comparison, a customized weather file was created by using measured outdoor temperature and relative humidity at the test facility. Other inputs to the model included building construction, VRF system model based on lab measured performance, occupancy of the building, lighting/plug loads, and thermostat set-points etc. Infiltration model inputs were adjusted in the beginning to tune the computer model and then subsequent field measurements were compared to the simulation results. Differences between the computer model results and actual field measurements are discussed. The computer generated VRF performance closely resembled the field measurements.

Issues in Energy Research and Application: 2011 Edition

Author :
Publisher : ScholarlyEditions
ISBN 13 : 1464966281
Total Pages : 741 pages
Book Rating : 4.4/5 (649 download)

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Book Synopsis Issues in Energy Research and Application: 2011 Edition by :

Download or read book Issues in Energy Research and Application: 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 741 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Energy Research and Application / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Energy Research and Application. The editors have built Issues in Energy Research and Application: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Energy Research and Application in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Energy Research and Application: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Refrigeration, Air Conditioning and Heat Pumps

Author : G F Hundy
Publisher : Butterworth-Heinemann
ISBN 13 : 0081006667
Total Pages : 512 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Refrigeration, Air Conditioning and Heat Pumps by : G F Hundy

Download or read book Refrigeration, Air Conditioning and Heat Pumps written by G F Hundy and published by Butterworth-Heinemann. This book was released on 2016-03-07 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Refrigeration, Air Conditioning and Heat Pumps, Fifth Edition, provides a comprehensive introduction to the principles and practice of refrigeration. Clear and comprehensive, it is suitable for both trainee and professional HVAC engineers, with a straightforward approach that also helps inexperienced readers gain a comprehensive introduction to the fundamentals of the technology. With its concise style and broad scope, the book covers most of the equipment and applications professionals will encounter. The simplicity of the descriptions helps users understand, specify, commission, use, and maintain these systems. It is a must-have text for anyone who needs thorough, foundational information on refrigeration and air conditioning, but without textbook pedagogy. It includes detailed technicalities or product-specific information. New material to this edition includes the latest developments in refrigerants and lubricants, together with updated information on compressors, heat exchangers, liquid chillers, electronic expansion valves, controls, and cold storage. In addition, efficiency, environmental impact, split systems, retail refrigeration (supermarket systems and cold rooms), industrial systems, fans, air infiltration, and noise are also included. Full theoretical and practical treatment of current issues and trends in refrigeration and air conditioning technology Meets the needs of industry practitioners and system designers who need a rigorous, but accessible reference to the latest developments in refrigeration and AC that is supported by coverage at a level not found in typical course textbooks New edition features updated content on refrigerants, microchannel technology, noise, condensers, data centers, and electronic control

Case Study for ARRA-funded Ground-source Heat Pump (GSHP) Demonstration at Oakland University

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (925 download)

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Book Synopsis Case Study for ARRA-funded Ground-source Heat Pump (GSHP) Demonstration at Oakland University by :

Download or read book Case Study for ARRA-funded Ground-source Heat Pump (GSHP) Demonstration at Oakland University written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High initial costs and lack of public awareness of ground-source heat pump (GSHP) technology are the two major barriers preventing rapid deployment of this energy-saving technology in the United States. Under the American Recovery and Reinvestment Act (ARRA), 26 GSHP projects have been competitively selected and carried out to demonstrate the benefits of GSHP systems and innovative technologies for cost reduction and/or performance improvement. This paper highlights the findings of a case study of one of the ARRA-funded GSHP demonstration projects, a ground-source variable refrigerant flow (GS-VRF) system installed at the Human Health Building at Oakland University in Rochester, Michigan. This case study is based on the analysis of measured performance data, maintenance records, construction costs, and simulations of the energy consumption of conventional central heating, ventilation, and air-conditioning (HVAC) systems providing the same level of space conditioning as the demonstrated GS-VRF system. The evaluated performance metrics include the energy efficiency of the heat pump equipment and the overall GS-VRF system, pumping performance, energy savings, carbon emission reductions, and cost-effectiveness of the GS-VRF system compared with conventional HVAC systems. This case study also identified opportunities for reducing uncertainties in the performance evaluation, improving the operational efficiency, and reducing the installed cost of similar GSHP systems in the future.

Renewable Energy Sources for Buildings

Author : Andrew Thorne
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (9 download)

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Book Synopsis Renewable Energy Sources for Buildings by : Andrew Thorne

Download or read book Renewable Energy Sources for Buildings written by Andrew Thorne and published by . This book was released on 2006 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy Efficiency: Innovations: Driving Prosperity, Slashing Emissions

Author : Henry Kelly
Publisher : World Scientific
ISBN 13 : 9811217874
Total Pages : 317 pages
Book Rating : 4.8/5 (112 download)

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Book Synopsis Energy Efficiency: Innovations: Driving Prosperity, Slashing Emissions by : Henry Kelly

Download or read book Energy Efficiency: Innovations: Driving Prosperity, Slashing Emissions written by Henry Kelly and published by World Scientific. This book was released on 2020-11-06 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy efficiency touches all parts of the economy and lies at the heart of all plausible strategies for addressing climate change. A fascinating range of new technologies and new business models have emerged in the past few years and are rapidly reshaping the field and driving efficiency improvements — many of them completely unexpected.This book provides a fresh look at energy efficiency written in a way that can be interesting to experts and serve as an entry point for novices. With chapters written by recognized experts in their fields of expertise, the book provides readers with a clear perspective on the state-of-the art developments of both new technologies and new approaches to system design and operations in buildings, industry, transportation, and urban design. Strategies for electrification and optimization based on data and powerful algorithms are also explored in depth. The discussion includes new mobility systems, smart buildings, reimagined industrial processes, new materials, and smart grid integration.Related Link(s)

Heating and Cooling with a Heat Pump

Author : Canada. Office of Energy Efficiency
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Heating and Cooling with a Heat Pump by : Canada. Office of Energy Efficiency

Download or read book Heating and Cooling with a Heat Pump written by Canada. Office of Energy Efficiency and published by . This book was released on 2004 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Begins with a general description of heat pumps and how they work, their terminology, and their standards. This is followed by details on air- and ground-source heat pumps, including their operation, components, energy efficiency considerations, sizing and design considerations, installation, benefits, maintenance, operating costs, and life expectancy. Heating energy costs are then compared for heat pump and electric heating systems at various locations in Canada. Related equipment such as supplementary heating systems, thermostats, and heat distribution systems is also reviewed. Finally, answers are provided to some commonly asked questions about heat pumps.

Advances in Ground-Source Heat Pump Systems

Author : Simon Rees
Publisher : Woodhead Publishing
ISBN 13 : 0081003226
Total Pages : 484 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Advances in Ground-Source Heat Pump Systems by : Simon Rees

Download or read book Advances in Ground-Source Heat Pump Systems written by Simon Rees and published by Woodhead Publishing. This book was released on 2016-05-13 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Ground-Source Heat Pump Systems relates the latest information on source heat pumps (GSHPs), the types of heating and/or cooling systems that transfer heat from, or to, the ground, or, less commonly, a body of water. As one of the fastest growing renewable energy technologies, they are amongst the most energy efficient systems for space heating, cooling, and hot water production, with significant potential for a reduction in building carbon emissions. The book provides an authoritative overview of developments in closed loop GSHP systems, surface water, open loop systems, and related thermal energy storage systems, addressing the different technologies and component methods of analysis and optimization, among other subjects. Chapters on building integration and hybrid systems complete the volume. Provides the geological aspects and building integration covered together in one convenient volume Includes chapters on hybrid systems Presents carefully selected chapters that cover areas in which there is significant ongoing research Addresses geothermal heat pumps in both heating and cooling modes

Heating and Cooling with Ground-Source Heat Pumps in Moderate and Cold Climates, Two-Volume Set

Author : Vasile Minea
Publisher : CRC Press
ISBN 13 : 1000564584
Total Pages : 841 pages
Book Rating : 4.0/5 (5 download)

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Book Synopsis Heating and Cooling with Ground-Source Heat Pumps in Moderate and Cold Climates, Two-Volume Set by : Vasile Minea

Download or read book Heating and Cooling with Ground-Source Heat Pumps in Moderate and Cold Climates, Two-Volume Set written by Vasile Minea and published by CRC Press. This book was released on 2022-07-30 with total page 841 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heating and Cooling with Ground-Source Heat Pumps in Moderate and Cold Climates, Two-Volume Set focuses on the use of very low-temperature geothermal energy for heating and cooling residential, institutional, and industrial buildings, and aims to increase the design community’s awareness and knowledge of the benefits, design, and installation requirements of commercial/institutional building ground-source heat pumps (GSHP). This set helps readers assess applicability, select a GSHP system type, and estimate building thermal load to ensure proper size for ground-source subsystems, appropriate brine and groundwater flow rates, and apt design of building closed-loops with distributed or central geothermal heat pumps. The first volume addresses fundamentals and design principles of vertical and horizontal indirect and direct expansion closed-loop, as well as ground- and surface-water ground-source heat pump systems. It explains the thermodynamic aspects of mechanical and thermochemical compression cycles of geothermal heat pumps, as well as the energetic, economic, and environmental aspects associated with the use of ground-source heat pump systems for heating and cooling residential and commercial/institutional buildings in moderate and cold climates. The second volume focuses on applications and cases studies of ground-source heat pumps in moderate and cold climates. It details technical aspects, as well as the most common and uncommon application fields of basic system configurations. The principles of system integrations and applications in moderate and cold climates are also presented, each followed by case studies. This comprehensive work is aimed at designers of HVAC systems, as well as geological, mechanical, and chemical engineers implementing environmentally-friendly heating and cooling technologies for buildings.

Heating with Renewable Energy

Author : John Siegenthaler
Publisher : Cengage Learning
ISBN 13 : 9781285075600
Total Pages : 864 pages
Book Rating : 4.0/5 (756 download)

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Book Synopsis Heating with Renewable Energy by : John Siegenthaler

Download or read book Heating with Renewable Energy written by John Siegenthaler and published by Cengage Learning. This book was released on 2016-02-10 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whether you are preparing for a career in the building trades or are already a professional contractor, this practical book will help you develop the knowledge and skills you need to merge renewable heat sources (such as solar thermal collectors, hydronic heat pumps, and wood-fired boilers) with the latest hydronics hardware and low temperature distribution systems to assemble efficient and reliable heating systems. Easy to understand and packed with full color illustrations that provide detailed piping and control schematics and how to information you'll use on every renewable energy system, this one-of-a-kind book will help you diversify your expertise over a wide range of heat sources. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.

Heating and Cooling with Ground-Source Heat Pumps in Cold and Moderate Climates

Author : Vasile Minea
Publisher : CRC Press
ISBN 13 : 1000564320
Total Pages : 282 pages
Book Rating : 4.0/5 (5 download)

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Book Synopsis Heating and Cooling with Ground-Source Heat Pumps in Cold and Moderate Climates by : Vasile Minea

Download or read book Heating and Cooling with Ground-Source Heat Pumps in Cold and Moderate Climates written by Vasile Minea and published by CRC Press. This book was released on 2022-04-19 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heating and Cooling with Ground-Source Heat Pumps in Cold and Moderate Climates: Fundamentals and Basic Concepts covers fundamentals and design principles of vertical and horizontal indirect and direct expansion closed-loop, as well as ground and surface-water ground-source heat pump systems. It explains the thermodynamic aspects of mechanical and thermochemical compression cycles of geothermal heat pumps, and describes the energetic, economic, and environmental aspects associated with the use of ground-source heat pump systems for heating and cooling residential and commercial/institutional buildings in moderate and cold climates. Based on the author's more than 30 years of technical experience Focuses on ground-source heat pump technologies that can be successfully applied in moderate and cold climates Discusses technical aspects as well as the most common and uncommon application fields of basic system configurations This work is aimed at designers of HVAC systems, as well as geological, mechanical, and chemical engineers implementing environmentally-friendly heating and cooling technologies for buildings.

The International Conference on Advanced Machine Learning Technologies and Applications (AMLTA2019)

Author : Aboul Ella Hassanien
Publisher : Springer
ISBN 13 : 3030141187
Total Pages : 960 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis The International Conference on Advanced Machine Learning Technologies and Applications (AMLTA2019) by : Aboul Ella Hassanien

Download or read book The International Conference on Advanced Machine Learning Technologies and Applications (AMLTA2019) written by Aboul Ella Hassanien and published by Springer. This book was released on 2019-03-16 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the peer-reviewed proceedings of the 4th International Conference on Advanced Machine Learning Technologies and Applications (AMLTA 2019), held in Cairo, Egypt, on March 28–30, 2019, and organized by the Scientific Research Group in Egypt (SRGE). The papers cover the latest research on machine learning, deep learning, biomedical engineering, control and chaotic systems, text mining, summarization and language identification, machine learning in image processing, renewable energy, cyber security, and intelligence swarms and optimization.

Computer Modeling VRF Heat Pumps in Commercial Buildings Using EnergyPlus

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (971 download)

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Book Synopsis Computer Modeling VRF Heat Pumps in Commercial Buildings Using EnergyPlus by :

Download or read book Computer Modeling VRF Heat Pumps in Commercial Buildings Using EnergyPlus written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Variable Refrigerant Flow (VRF) heat pumps are increasingly used in commercial buildings in the United States. Monitored energy use of field installations have shown, in some cases, savings exceeding 30% compared to conventional heating, ventilating, and air-conditioning (HVAC) systems. A simulation study was conducted to identify the installation or operational characteristics that lead to energy savings for VRF systems. The study used the Department of Energy EnergyPlus? building simulation software and four reference building models. Computer simulations were performed in eight U.S. climate zones. The baseline reference HVAC system incorporated packaged single-zone direct-expansion cooling with gas heating (PSZ-AC) or variable-air-volume systems (VAV with reheat). An alternate baseline HVAC system using a heat pump (PSZ-HP) was included for some buildings to directly compare gas and electric heating results. These baseline systems were compared to a VRF heat pump model to identify differences in energy use. VRF systems combine multiple indoor units with one or more outdoor unit(s). These systems move refrigerant between the outdoor and indoor units which eliminates the need for duct work in most cases. Since many applications install duct work in unconditioned spaces, this leads to installation differences between VRF systems and conventional HVAC systems. To characterize installation differences, a duct heat gain model was included to identify the energy impacts of installing ducts in unconditioned spaces. The configuration of variable refrigerant flow heat pumps will ultimately eliminate or significantly reduce energy use due to duct heat transfer. Fan energy is also studied to identify savings associated with non-ducted VRF terminal units. VRF systems incorporate a variable-speed compressor which may lead to operational differences compared to single-speed compression systems. To characterize operational differences, the computer model performance curves used to simulate cooling operation are also evaluated. The information in this paper is intended to provide a relative difference in system energy use and compare various installation practices that can impact performance. Comparative results of VRF versus conventional HVAC systems include energy use differences due to duct location, differences in fan energy when ducts are eliminated, and differences associated with electric versus fossil fuel type heating systems.

Geothermal HVAC

Author : Jay Egg
Publisher : McGraw Hill Professional
ISBN 13 : 0071746110
Total Pages : 272 pages
Book Rating : 4.0/5 (717 download)

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Book Synopsis Geothermal HVAC by : Jay Egg

Download or read book Geothermal HVAC written by Jay Egg and published by McGraw Hill Professional. This book was released on 2010-11-05 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-depth, practical details on geothermal HVAC systems This definitive guide covers commercial and residential geothermal heating, ventilation, and air conditioning technologies and explains how to take advantage of their money- and energy-saving features. Geothermal HVAC: Green Heating and Cooling reviews the array of choices currently available, offers market values for systems based on varying options and conditions, and describes how to pair the best systems for each application and budget. Whether you're a contractor or a consumer, you'll find out what you need to know to implement a geothermal HVAC system in a retrofit or new construction project, and start benefiting from this sustainable, affordable technology. Find out how to: Learn the basic types of heat transfer--convection, conduction, and radiation Understand how geothermal earth-coupled heat pumps work Determine which ground loops to use for earth coupling to best meet the demands of the site Use load sharing to channel the heat differential of one device into useful energy for another Calculate system efficiencies and heat gain and loss Understand geothermal project proposals and system pricing Benefit from incentives, tax credits, and rebates for geothermal HVAC systems Calculate your long-term return on investment Verify that your installed system is working as intended Troubleshoot your system and avoid common problems

A Whole-System Approach to High Performance Green Buildings

Author : David Strong
Publisher : Artech House
ISBN 13 : 1630814415
Total Pages : 299 pages
Book Rating : 4.6/5 (38 download)

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Book Synopsis A Whole-System Approach to High Performance Green Buildings by : David Strong

Download or read book A Whole-System Approach to High Performance Green Buildings written by David Strong and published by Artech House. This book was released on 2016-12-31 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative new resource provides a comprehensive review of the current approaches to the design and construction of sustainable buildings. This hand-on guide features global case studies with practical examples of both successful and unsuccessful designs. The whole system approach to integrated design is clearly presented. This book includes insight into designing for the future, including design quality and future proofing, intelligent buildings, and whole life value. Nature inspired sustainable designs that can be mimicked in the construction industry are presented. Technical challenges such as energy efficiency, design, and computer modeling are explored along with various construction phase opportunities.