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Heat Pump Water Heater (HPWH) systems can help achieve decarbonization goals while providing a method to heat water that outperforms electric resistance heating in terms of energy efficiency. Nevertheless, vapor compression systems are restricted to operate within the compressor envelope, to protect the compressor from excessive pressure ratios and discharge temperature that could damage the equipment.
This paper presents the experimental study of a R134a HPWH system. The experimental facility used is a residential HPWH unit, which contains a finned-tube evaporator, a low-pressure side accumulator, a rotary compressor, an electronic expansion valve, a wrap-around coil condenser, and a water tank. Tests are carried out with water in warm-up condition where the water is heated to a set point temperature without any water draw from the system. The experimental facility is placed in an environmental chamber where a PID-controlled heater is used to maintain a constant ambient temperature.
A new storage heat pump cycle that aims to improve the operating temperature range of the conventional heat pump system by the means of energy storage at an intermediate temperature level is also discussed. Implementation of the new concept would require a split-condenser design and the system operation in two different modes to achieve the higher operating temperature range. The experimental results obtained for the conventional system can be used in evaluating the performance of the new system and determining its applicability when compared to the conventional system.
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- Original title: Study of a conventional heat pump water heater system for implementation of a new storage heat pump concept.
- Record ID : 30030631
- Languages: English
- Subject: Technology
- Source: 2022 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
- Publication date: 2022
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Indexing
- Themes: Residential heat-pumps
- Keywords: Domestic heat pump; Expérimentation; Water heater; Energy storage
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Modeling and experimental study of a heat pump ...
- Author(s) : DEUTZ K. R., CAURET O., RULLIÈRE R., et al.
- Date : 2016/07/11
- Languages : English
- Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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Fifteen years of dehumidification results from ...
- Author(s) : MURPHY W. E.
- Date : 2016/07/11
- Languages : English
- Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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Energy recovering using greywater as cold body ...
- Author(s) : ILLÁN GÓMEZ F., GARCÍA-CASCALES J. R., LÓPEZ BELCHÍ A.
- Date : 2018/06/18
- Languages : English
- Source: 13th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
- Formats : PDF
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Transient distribution of refrigerant and oil i...
- Author(s) : LI W., HRNJAK P.
- Date : 2018/07/09
- Languages : English
- Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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Performance improvement of a residential heat p...
- Author(s) : SHI C., HRNJAK P.
- Date : 2019/08/24
- Languages : English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Formats : PDF
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