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Download or read book Research and Development of an Air-cycle Heat-pump Water Heater written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 199 pages
Book Rating : 4.:/5 (417 download)
Download or read book Research and Development of an Air-cycle Heat-pump Water Heater written by and published by . This book was released on 1979 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (612 download)
Download or read book Research and Development of an Air-cycle Heat-pump Water Heater written by and published by . This book was released on 1979 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development of a Heat Pump Water Heater. Volume 1. Final Summary Report written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An electric heat pump water heater with an operating efficiency, E/sub R/, of 2.5 in average conditions of 70 to 75°F ambient air and 55 to 60°F supply water has been designed. With losses taken into account, the coefficient of performance (COP) is 2.8 or within 10% of the design objective. Separate heat pump designs are available for new water heaters and for retrofitting of existing ones. For both models, the compressor, evaporator, fan and controls are mounted in a round cabinet set on top of the water heater. The condenser is a dual tube direct immersion type which enters the tank through a special 4-in. hole in the top of new tanks. For retrofit units, the condenser is in the form of a helix and is screwed into the tank through the hole normally used by the lower resistance element. Early estimates for the cost of the device are between $200 to $250 more than for an electric resistance water heater. Using this estimate, the payback for many applications will be between one and two years with some being less than one year. The payback period is dependent on the amount of hot water consumption and the price of electricity. In warm climates, the benefit/cost ratio will be improved by higher efficiency from warmer ambient air and by the value of free air conditioning and dehumidification provided while the unit is operating. In colder climates, the improved efficiency from colder supply water and the higher operating savings from higher kilowatt-hour use because of the colder water tend to offset the effect of the less favorable climate. A field demonstration of one hundred water heater heat pumps is planned in which each of 20 utilities will purchase, install and service five units, and install, service and monitor instrumentation packages supplied by DOE. This project will deterine the annual COP of each unit and its impact on the heating and cooling load of the house.
Download or read book Research and Development of a Heat-pump Water Heater. Volume 2. R and D Task Reports written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The heat pump water heater is a device that works much like a window air conditioner except that heat from the home is pumped into a water tank rather than to the outdoors. The objective established for the device is to operate with a Coefficient of Performance (COP) of 3 or, an input of one unit of electric energy would create three units of heat energy in the form of hot water. With such a COP, the device would use only one-third the energy and at one-third the cost of a standard resistance water heater. This Volume 2 contains the final reports of the three major tasks performed in Phase I. In Task 2, a market study identifies the future market and selects an initial target market and channel of distribution, all based on an analysis of the parameters affecting feasibility of the device and the factors that will affect its market acceptance. In the Task 3 report, the results of a design and test program to arrive at final designs of heat pumps for both new water heaters and for retrofitting existing water heaters are presented. In the Task 4 report, a plan for an extensive field demonstration involving use in actual homes is presented. Volume 1 contains a final summary report of the information in Volume 2.
Author : Energy Utilization Systems, inc
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (613 download)
Download or read book Research and Development of a Heat-pump Water Heater written by Energy Utilization Systems, inc and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. L. Dunning
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (618 download)
Download or read book Research and Development of a Heat-pump Water Heater written by R. L. Dunning and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 752 pages
Book Rating : 4.:/5 (3 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1368 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : International Energy Agency
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.:/5 (41 download)
Download or read book Heat Pump Systems written by International Energy Agency and published by . This book was released on 1982 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hui Huang
Publisher : CRC Press
ISBN 13 : 1000062171
Total Pages : 295 pages
Book Rating : 4.0/5 ( download)
Download or read book Heat Pumps for Cold Climate Heating written by Hui Huang and published by CRC Press. This book was released on 2020-05-01 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air source heat pumps are mainly used for space heating, and have the advantages of environmental protection, energy saving, and comfort. Written by leading heat pump technology expert Hui Huang, this book summarizes the research and applications of variable volume ratio two-stage vapor compression air source heat pump technology, and its use in cold climate regions. This book can be used for reference by scientific researchers and engineers engaged in research on air source heat pump technology, product development and popularization; and by energy management and policy researchers. It will also be of value to undergraduate and graduate students studying these areas of technology.
Author :
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (953 download)
Download or read book Development and Validation of a Gas-Fired Residential Heat Pump Water Heater - Final Report written by and published by . This book was released on 2013 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: For gas-fired residential water heating, the U.S. and Canada is predominantly supplied by minimum efficiency storage water heaters with Energy Factors (EF) in the range of 0.59 to 0.62. Higher efficiency and higher cost ($700 - $2,000) options serve about 15% of the market, but still have EFs below 1.0, ranging from 0.65 to 0.95. To develop a new class of water heating products that exceeds the traditional limit of thermal efficiency, the project team designed and demonstrated a packaged water heater driven by a gas-fired ammonia-water absorption heat pump. This gas-fired heat pump water heater can achieve EFs of 1.3 or higher, at a consumer cost of $2,000 or less. Led by Stone Mountain Technologies Inc. (SMTI), with support from A.O. Smith, the Gas Technology Institute (GTI), and Georgia Tech, the cross-functional team completed research and development tasks including cycle modeling, breadboard evaluation of two cycles and two heat exchanger classes, heat pump/storage tank integration, compact solution pump development, combustion system specification, and evaluation of packaged prototype GHPWHs. The heat pump system extracts low grade heat from the ambient air and produces high grade heat suitable for heating water in a storage tank for domestic use. Product features that include conventional installation practices, standard footprint and reasonable economic payback, position the technology to gain significant market penetration, resulting in a large reduction of energy use and greenhouse gas emissions from domestic hot water production.
Author :
Publisher :
ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.F/5 ( download)
Download or read book Energy written by and published by . This book was released on 1983 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 984 pages
Book Rating : 4.:/5 (31 download)
Download or read book Refrigeration Engineering written by and published by . This book was released on 1951 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt: English abstracts from Kholodil'naia tekhnika.
Author : Energetics (Firm)
Publisher :
ISBN 13 : 9780642191168
Total Pages : 117 pages
Book Rating : 4.1/5 (911 download)
Download or read book Development and Demonstration of a High Temperature Heat Pump for Commercial Water Heating written by Energetics (Firm) and published by . This book was released on 1994 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Louise S. Morrison
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (353 download)
Download or read book Analysis of the Performance and Space Conditioning Impacts of Dedicated Heat Pump Water Heaters written by Louise S. Morrison and published by . This book was released on 1980 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A description is given of the development and testing of the newly-marketed dedicated heat pump water heater (HPWH) and an analysis is presented of its performance and space conditioning impacts. This system utilizes an air-to-water heat pump, costs about $1,000 installed, and obtains a coefficient of performance (COP) of about 2.0 in laboratory and field tests.
Download or read book Development of High Efficiency Carbon Dioxide Commercial Heat Pump Water Heater written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although heat pump water heaters are today widely accepted in both Japan and Europe, where energy costs are high and government incentives for their use exist, acceptance of such products in the US has been limited. While this trend is slowly changing with the introduction of heat pump water heaters into the residential market, but acceptance remains low in the commercial sector. The objective of the presented work is the development of a high efficiency R744 heat pump water heater for commercial applications with effective utilization of the cooling capability for air conditioning and/or refrigeration. The ultimate goal is to achieve total system COP of up to 8. This unit will be targeted at commercial use where some cooling load is typically needed year round, such as restaurants, hotels, nursing homes, and hospitals. This paper presents the performance results from the development of four R744 commercial heat pump water heater packages of approximately 35 kW and comparison to a commercially available baseline R134a unit of the same capacity and footprint. In addition, the influences of an internal heat exchanger and an enhanced evaporator on the system performance are described and recommendations are made for further improvements of the R744 system.
