scholarly journals High Efficiency Water Heating Technology Development Final Report, Part II: CO2 and Absorption-Based Residential Heat Pump Water Heater Development

2017 ◽  
Author(s):  
Kyle R. Gluesenkamp ◽  
Omar Abdelaziz ◽  
Viral K. Patel ◽  
Bracha T. Mandel ◽  
Valmor F. de Almeida
Keyword(s):  
Heat Pump ◽  
High Efficiency ◽  
Technology Development ◽  
Final Report ◽  
Water Heating ◽  
Water Heater ◽  
Heat Pump Water Heater ◽  
Heating Technology

Research and development of an air-cycle heat-pump water heater. Final report

1979 ◽  
Author(s):  
J.T. Dieckmann ◽  
A.J. Erickson ◽  
A.C. Harvey ◽  
W.M. Toscano
Keyword(s):  
Research And Development ◽  
Heat Pump ◽  
Final Report ◽  
Water Heater ◽  
Heat Pump Water Heater

Energy Consumption Modeling of a Heat Pump System for Combined Space Conditioning and Residential Water Heating in a Typical Household in Quito, Ecuador

2016 ◽  
Author(s):  
Gabriel Agila ◽  
Guillermo Soriano
Keyword(s):  
Energy Consumption ◽  
Heat Pump ◽  
Thermal Storage ◽  
Hot Water ◽  
Water Heating ◽  
Water Heater ◽  
Pump System ◽  
Detailed Model ◽  
Heat Pump Water Heater ◽  
Residential Water

This research develops a detailed model for a Water to Water Heat Pump Water Heater (HPWH), operating for heating and cooling simultaneously, using two water storage tanks as thermal deposits. The primary function of the system is to produce useful heat for domestic hot water services according to the thermal requirements for an average household (two adults and one child) in the city of Quito, Ecuador. The purpose of the project is to analyze the technical and economic feasibility of implementing thermal storage and heat pump technology to provide efficient thermal services and reduce energy consumption; as well as environmental impacts associated with conventional systems for residential water heating. An energy simulation using TRNSYS 17 is carried to evaluate model operation for one year. The purpose of the simulation is to assess and quantifies the performance, energy consumption and potential savings of integrating heat pump systems with thermal energy storage technology, as well as determines the main parameter affecting the efficiency of the system. Finally, a comparative analysis based on annual energy consumption for different ways to produce hot water is conducted. Five alternatives were examined: (1) electric storage water heater; (2) gas fired water heater; (3) solar water heater; (4) air source heat pump water heater; and (5) a heat pump water heater integrated with thermal storage.

scholarly journals Development and Validation of a Gas-Fired Residential Heat Pump Water Heater - Final Report

2013 ◽  
Author(s):  
Michael Garrabrant ◽  
Roger Stout ◽  
Paul Glanville ◽  
Janice Fitzgerald ◽  
Chris Keinath
Keyword(s):  
Heat Pump ◽  
Final Report ◽  
Water Heater ◽  
Heat Pump Water Heater ◽  
Development And Validation

Residential Water Heating Dehumidifier (WHD) With Devoted Dehumidification

2005 ◽  
Author(s):  
Aaron K. Ball ◽  
Chip W. Ferguson ◽  
Frank T. Miceli ◽  
Evelyn Baskin
Keyword(s):  
Heat Pump ◽  
Energy Use ◽  
Hot Water ◽  
Maximum Efficiency ◽  
Electric Resistance ◽  
Water Heating ◽  
Water Heater ◽  
Water Heaters ◽  
Heat Pump Water Heater ◽  
Residential Water

A new a dual-service dehumidifier water heater (WHD) appliance is being researched and developed by the authors. Prior research on a similar appliance, a heat pump water heater (HPWH), has demonstrated the unit’s increased performance and energy saving, and through collaboration, significant progress has been made toward developing the WHD into a potentially marketable product. The primary energy use in residential households is space conditioning (49%), and the second major energy use is hot water consumption. In DOE’s 2004 Buildings Data Book, 15.5 percent of residential energy utilization is consumed by water heating (DOE 2004, Table 1.2.3). The two major types of residential water heaters are direct gas fired (~55%) and electric resistance (~45%) (DOE 2004, Appliance Magazine 2005). The maximum efficiency of a standard electric resistance water heater is 1 (100%), and progress has been made to increase the efficiency of the current standard heaters to approximately 95 percent (DOE 2004, Table 5.10.6), which is roughly the maximum available with today’s technology. However, if the standard system is replaced by a Heat Pump Water Heater (HPWH), the performance can be increased by 140 percent (Zogg and Murphy 2004). The WHD operates as a HPWH while heating water and as a dedicated dehumidifier when water heating is not necessary. This paper presents the general design and laboratory testing results of a WHD. Preliminary performance data reveal coefficient of performances (COP) of approximately 2.2 during water heating. Further, market analysis has revealed that a potential need for this new technology is in regions with high humidity (Ashdown et al. 2004). These regions are primarily in the Northeast, Southeast and some coastal areas of the U.S. Current HPWH units do not have dedicated dehumidification and have a very small share of the residential water heat market. Of the 9.55 million residential water heaters sold in 2003 only about 2,000 of them were HPWHs (DOE 2004, Table 5.10.15).

Experimental Investigation of a Multifunctional Solar Assisted Heat Pump in Space Cooling Integrated Water Heating Mode and Space Cooling only Mode

2011 ◽  
Vol 80-81 ◽  
pp. 904-908
Author(s):  
Ai Guo Jiang ◽  
Xiao Zhong Wang
Keyword(s):  
Energy Efficiency ◽  
Heat Pump ◽  
Water Source ◽  
Efficiency Ratio ◽  
Water Heating ◽  
Water Heater ◽  
Operating Modes ◽  
Heat Pump Water Heater ◽  
Space Cooling ◽  
Heating Mode

A prototype of a Multifunctional Solar Assisted Heat Pump (MSAHP) system is designed in the study. The system integrates a heat pump water heater, a conventional air-conditioning unit and a solar water heater, and takes advantage of their multiple functions in terms of solar and heat pump water heating, space cooling only, space cooling integrated water heating, and air-source/water-source heat pump space heating. The principle and different operating modes of the system are presented. The experimental study of the prototype of the MSAHP in the space cooling integrated water heating mode was conducted. The results indicate that the combined energy efficiency ratio (EERc) of the system fluctuated between 3.39 and 6.20 in this mode. Experiment was also conducted to test the relevant performance functions of the system in the space cooling only mode. The results show that the energy efficiency ratio (EER) of space cooling only mode is 2.61.

Experimental study for a high efficiency cascade heat pump water heater system using a new near-zeotropic refrigerant mixture

2018 ◽  
Vol 138 ◽  
pp. 783-794 ◽  
Author(s):  
Xuelian Ma ◽  
Yufeng Zhang ◽  
Xiaoqiong Li ◽  
Hongfu Zou ◽  
Na Deng ◽  
...  
Keyword(s):  
Experimental Study ◽  
Heat Pump ◽  
High Efficiency ◽  
Water Heater ◽  
Heat Pump Water Heater ◽  
Refrigerant Mixture

scholarly journals Development of high-efficiency carbon dioxide commercial heat pump water heater

2013 ◽  
Vol 19 (7) ◽  
pp. 823-835 ◽  
Author(s):  
Michael Petersen ◽  
Chad Bowers ◽  
Stefan Elbel ◽  
Pega Hrnjak
Keyword(s):  
Carbon Dioxide ◽  
Heat Pump ◽  
High Efficiency ◽  
Water Heater ◽  
Heat Pump Water Heater

Exploration of an Efficient Control Rule Set of a Heat Pump Water Heater by Genetic Algorithms

2010 ◽  
Vol 130 (2) ◽  
pp. 194-200 ◽  
Author(s):  
Hidenori Komatsu ◽  
Ken-ichi Tokoro ◽  
Yasushi Sinohara
Keyword(s):  
Genetic Algorithms ◽  
Heat Pump ◽  
Water Heater ◽  
Control Rule ◽  
Heat Pump Water Heater ◽  
Efficient Control ◽  
Rule Set
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