Share

Refrigerant mass charge distribution in a domestic refrigerator. I. Transient conditions.

Author(s) : BJÖRK E., PALM B.

Type of article: Article

Summary

Experimental results are presented of the refrigerant mass charge distribution in a steadily cycling domestic refrigerator. It is shown in detail how the charge is displaced at compressor start-up and shut-down. At start-up it was found that the charge was temporarily displaced towards the condenser before returning to a steady state distribution in the latter part of the on-period. As a result, initially the evaporator was starved with a lowered evaporation temperature and a peak 10°C superheat. The superheat disappeared within 3 min as the evaporator was gradually refilled with refrigerant. At shut-down the pressure equalised within 3 min as refrigerant was pushed into the evaporator from the condenser. The losses due to charge displacements were estimated to 11% (capacity) and 9% (efficiency). Possible ways to reduce the losses are discussed. [Reprinted with permission from Elsevier. Copyright, 2005]. See also this Bulletin, reference 2006-2408.

Details

  • Original title: Refrigerant mass charge distribution in a domestic refrigerator. I. Transient conditions.
  • Record ID : 2006-2409
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 26 - n. 8-9
  • Publication date: 2006/06

Links


See other articles in this issue (8)
See the source

Indexing