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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
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Book Description
Gas heat pumps are coming, but by a different name. The manufacturers have elected not to call these products {open_quote}heat pumps{close_quotes} because advertising by gas distributors has been so effective at associating the term {open_quote}air-source heat pump{close_quotes} with cold blowing air. Nonetheless, gas-fired air-source heat pumps of the engine-driven and absorption types will be marketed starting in 1994 and in 1997, respectively, according to current plans. This paper identifies the generic participants that have been and will be involved in the gas heat pump deployment effort, and it reviews the underlying forces that caused (or likely will cause) those participants to act as they do. The participants include technology developers; the heating, ventilation, and air-conditioning (HVAC) industry; the utility industry; and state utility regulators. The driving forces include the drifting of unitary HVAC products toward a commodity-like status, the decline of the domestic component of global HVAC markets, the restructuring of the HVAC and gas utility industries, the anticipated restructuring of the electric utility industry, the strengths and weaknesses of gas distributors, and state utility regulation. Also reviewed are technology status, manufacturer commitments, and timetables for introducing products. The road to widespread domestic market acceptance of gas heat pumps will likely be very different from that experienced by electric heat pump manufacturers in the 1950s and 1960s.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
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Book Description
Gas heat pumps are coming, but by a different name. The manufacturers have elected not to call these products {open_quote}heat pumps{close_quotes} because advertising by gas distributors has been so effective at associating the term {open_quote}air-source heat pump{close_quotes} with cold blowing air. Nonetheless, gas-fired air-source heat pumps of the engine-driven and absorption types will be marketed starting in 1994 and in 1997, respectively, according to current plans. This paper identifies the generic participants that have been and will be involved in the gas heat pump deployment effort, and it reviews the underlying forces that caused (or likely will cause) those participants to act as they do. The participants include technology developers; the heating, ventilation, and air-conditioning (HVAC) industry; the utility industry; and state utility regulators. The driving forces include the drifting of unitary HVAC products toward a commodity-like status, the decline of the domestic component of global HVAC markets, the restructuring of the HVAC and gas utility industries, the anticipated restructuring of the electric utility industry, the strengths and weaknesses of gas distributors, and state utility regulation. Also reviewed are technology status, manufacturer commitments, and timetables for introducing products. The road to widespread domestic market acceptance of gas heat pumps will likely be very different from that experienced by electric heat pump manufacturers in the 1950s and 1960s.
Author: J. Bosma
Publisher: Elsevier
ISBN: 0444596550
Category : Technology & Engineering
Languages : en
Pages : 613
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Book Description
The 70 papers collected in this volume present an up to date review of the trends in heat pump technology. The heat pump is reviewed both as being part of a more comprehensive system, and as a refined device providing energy and greenhouse gas emission reductions. Its implementation in a system or process must be carefully considered at an early stage of design or development, and process integration is discussed in detail as a valuable tool for industry.The heat pump is proving to be a highly effective energy conserving tool, particularly when designed and used as an integral part of a system. Environmental benefits are gained when energy is conserved, and heat pumps can make a major contribution in this area. However, some heat pumps use working fluids which are environmentally unfriendly, and the progress that has been made in the field of alternative refrigerants is reported on. The volume will prove an indispensable reference source on the wide-ranging applications that have been developed since the last international conference, on such topics as heat pump field trials, pilot plants and development programmes.
Author: Harry J. Sauer (Jr.)
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 744
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Book Description
A comprehensive introduction to the fundamentals, performance, design, cost, and selection of heat pumps. Utilizes life-cycle costing to determine operating and owning costs. Examines load and energy estimating, pump design, and more. Reviews the historical evolution of heat pump technology and demonstrates the design pitfalls of early models.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 25
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Book Description
There has been considerable activity in recent years to develop technologies that could reduce or levelize residential and light-commercial building space cooling electrical use and heating/cooling energy use. For example, variable or multi-speed electric heat pumps, electric ground-source heat pumps, dual-fuel heat pumps, multi-function heat pumps, and electric cool storage concepts have been developed; and several types of gas heat pumps are emerging. A residential gas heat pump (GHP) benefits assessment is performed to assist gas utility and equipment manufacturer decision making on level of commitment to this technology. The methodology and generic types of results that can be generated are described. National market share is estimated using a market segmentation approach. The assessment design requires dividing the 334 Metropolitan Statistical Areas (MSAS) of the US into 42 market segments of relatively homogeneous weather and gas/electric rates (14 climate groupings by 3 rate groupings). Gas and electric rates for each MSA are evaluated to arrive at population-weighted rates for the market segments. GHPs are competed against 14 conventional equipment options in each homogeneous segment.
Author: G F Hundy
Publisher: Butterworth-Heinemann
ISBN: 0081006667
Category : Science
Languages : en
Pages : 512
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Book Description
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
Author: Laura Hoffmann
Publisher: GRIN Verlag
ISBN: 334648324X
Category : Science
Languages : en
Pages : 11
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Book Description
Seminar paper from the year 2021 in the subject Engineering - Power Engineering, grade: 1,3, Technical University of Munich, language: English, abstract: In this paper, the principle of heat pumps will be looked at and discussed more in detail. Heat pumps can play an important role in the transformation towards reducing greenhouse gas emissions and energy consumption, due to their ability to lift low-grade environmental heat with power to a temperature level useful in buildings. They are efficient in providing heat when implemented correctly and can also provide demand response. Thus, heat pumps are able to provide, compared to other heating systems, significant carbon savings that are even expected to rise further in the future. Reducing greenhouse gas emissions and energy consumption poses one of the major issues that has to be dealt with at present. National and international climate change objectives demand a significant reduction in all sectors Along with the increasing expectations of reducing greenhouse gas emissions, these global targets are causing a change in our energy system. The demand for energy-efficient and cost-effective systems have risen due primarily to dwindling resources causing increasing energy costs. To deal with these issues, the focus shifts more and more towards phasing out fossil fuels and replacing them with electrical energy systems powered by renewable intermittent energy sources, such as sun and wind, to decrease our reliance on fossil fuels. One way to heat buildings more efficiently is the use of a heat pump. Heat pumps have become popular in Germany, by now, over 1 million have been implemented.
Author: Xin-rong Zhang
Publisher: John Wiley & Sons
ISBN: 1118380045
Category : Science
Languages : en
Pages : 320
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Book Description
A timely and comprehensive introduction to CO2 heat pump theory and usage A comprehensive introduction of CO2 application in heat pump, authored by leading scientists in the field CO2 is a hot topic due to concerns over global warming and the 'greenhouse effect'. Its disposal and application has attracted considerable research and governmental interest Explores the basic theories, devices, systems and cycles and real application designs for varying applications, ensuring comprehensive coverage of a current topic CO2 heat transfer has everyday applications including water heaters, air-conditioning systems, residential and commercial heating systems, and cooling systems
Author: A. F. C. Sherratt
Publisher:
ISBN:
Category : Dwellings
Languages : en
Pages : 384
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Book Description
Author: David D. Vanderburg
Publisher:
ISBN: 9781423511694
Category : Ground source heat pump systems
Languages : en
Pages : 244
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Book Description
To sustain the United States current affluence and strength, the U.S. Government has encouraged energy conservation through executive orders, federal and local laws, and consumer education. A substantial reduction in U.S. energy consumption could be realized by using geothermal heat pumps to heat and cool buildings throughout the U.S., though initial installation cost are a deterrent. This thesis uses Monte Carlo simulation to predict energy consumption, life cycle cost and payback period for the vertical closed-loop ground source heat pump (GSHP) relative to conventional heating ventilation and air conditioning (HVAC) systems: air-source heat pumps (ASHP), air-cooled air conditioning with either natural gas, fuel oil, or liquid petroleum gas furnaces, or with electrical resistance heating. The Monte Carlo simulation is performed for a standard commercial office building within each of the 48 continental states. Regardless of the conventional HVAC system chosen, the simulation shows that for each state the GSHP has the highest probability of using less energy and having a lower operating and life cycle cost than conventional HVAC systems; however, initial installation cost are typically twice that of conventional HVAC systems and payback periods vary greatly depending on site conditions. The average 50th percentile GSHP payback period in the U.S. was 7.5 years compared against the ASHP and 9.2 years compared against the air-cooled air conditioning with natural gas furnace. However, these values vary greatly depending on location and are most sensitivity to ground thermal conductivity, utility prices, and HVAC efficiency ratings. Under the right conditions, payback for geothermal heat pumps can be much shorter and the model developed in this research can help predict energy savings and payback periods for a given site.
Author: M. J. Collie
Publisher: William Andrew
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 376
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Book Description
