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Accession Number DE2013-1076573
Title High Efficiency R-744 Commercial Heat Pump Water Heaters.
Publication Date Feb 2013
Media Count 244p
Personal Author S. Elbel
Abstract 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.
Keywords Carbon dioxide
Cooling systems
Heat exchangers
Heat pumps
Performance evaluation
Water heaters

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 97J - Heating & Cooling Systems
97B - Energy Use, Supply, & Demand
97G - Policies, Regulations & Studies
Corporate Author Department of Energy, Golden, CO. Golden Field Office.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1320
Contract Number DE-EE0003981

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