Share

IIR document

Performance characteristics of a residential air conditioning system with subcooling control.

Number: pap. n. 1135

Author(s) : KIMURA DE CARVALHO B. Y., HRNJAK P.

Summary

Superheat control of refrigerant flow using thermostatic expansion valves (TEV) has been widely employed in residential air conditioning and heat pump (RAC&HP). Subcooling control is an alternative for refrigerant flow metering focusing on maximizing COP/HPF or capacity. An electronic expansion valve (EEV) adjusts subcooling while an accumulator prevents liquid return. The paper provides an experimental analysis on the performance of a RAC system with subcooling control. Performance of the system was evaluated at different conditions, at nominal charge. Superheat and subcooling control are compared. Refrigerant charge was also optimized at a single condition for both superheat and subcooling control. Results show a 10.1% increase in COP using subcooling control for indoor/outdoor temperatures of 20°C/40°C. Subcooling control provides a balance between the increase in specific compression work and the increase in specific refrigerating effect.

Available documents

Format PDF

Pages: 8

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Performance characteristics of a residential air conditioning system with subcooling control.
  • Record ID : 30026781
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1135

Links


See other articles from the proceedings (632)
See the conference proceedings

Indexing