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Experimental study of heat pump water heater system operating on a new storage heat pump cycle to achieve higher operating range.

Number: 0375

Author(s) : PATEL P., ELBEL S.

Summary

A new storage heat pump concept aimed at improving the operating temperature range of an R134a heat pump water heater (HPWH) system is introduced. Storage heat pump cycle involves system operation in two modes to get the high temperature lift. In Mode I, system operates as a typical wrap-around-condenser HPWH, whereas in Mode II, a throttle valve splits the wrap-around coil to use the top portion as condenser and bottom portion as evaporator. Water contained in the lower tank region acts as an energy storage element, wherein the energy stored in Mode I is utilized in Mode II to maintain a lower pressure ratio and discharge temperature for the vapor compression system. Experimental setup for HPWH operating on the storage heat pump cycle is built by modifying a conventional HPWH system. Experimental results for the storage heat pump system performance are also compared with a conventional heat pump system.

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Pages: 12

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Details

  • Original title: Experimental study of heat pump water heater system operating on a new storage heat pump cycle to achieve higher operating range.
  • Record ID : 30031403
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0375

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