High Efficiency R-744 Commercial Heat Pump Water Heaters
The project investigated the development and improvement process of a R744 (CO2) commercial heat pump water heater (HPWH) package of approximately 35 kW. The improvement process covered all main components of the system. More specific the heat exchangers (Internal heat exchanger, Evaporator, Gas cooler) as well as the expansion device and the compressor were investigated. In addition, a comparison to a commercially available baseline R134a unit of the same capacity and footprint was made in order to compare performance as well as package size reduction potential.
- Research Organization:
- Creative Thermal Solutions, Inc., 2209 North Willow Rd., Urbana, IL 61802-7338
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); Golden Field Office; USDOE EE Office of Building Technologies (EE-2J)
- Contributing Organization:
- Creative Thermal Solutions, Inc.; A. O. Smith Corporation
- DOE Contract Number:
- EE0003981
- OSTI ID:
- 1076573
- Report Number(s):
- DOE/EE0003981-3; DUNS 148675486; EIB 20-0946943
- Country of Publication:
- United States
- Language:
- English
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