Defrost Temperature Termination in Supermarket Refrigeration Systems

Fricke, Brian A ; Sharma, Vishaldeep

Oak Ridge National Laboratory

关键词: Evaporators;    Testing;    Potential Energy;    Heaters;    32 Energy Conservation, Consumption, And Utilization;   

DOI  :  10.2172/1028754
RP-ID  :  ORNL/TM-2011/240
RP-ID  :  DE-AC05-00OR22725
RP-ID  :  1028754

美国|英语

来源: UNT Digital Library

【 摘 要 】

The objective of this project was to determine the potential energy savings associated with implementing demand defrost strategies to defrost supermarket refrigerated display case evaporators, as compared to the widely accepted current practice of controlling display case defrost cycles with a preset timer. The defrost heater energy use of several representative display case types was evaluated. In addition, demand defrost strategies for refrigerated display cases as well as those used in residential refrigerator/freezers were evaluated. Furthermore, it is anticipated that future work will include identifying a preferred defrost strategy, with input from Retail Energy Alliance members. Based on this strategy, a demand defrost system will be designed which is suitable for supermarket refrigerated display cases. Limited field testing of the preferred defrost strategy will be performed in a supermarket environment.