SciTech Connect

Title: Defrost Temperature Termination in Supermarket Refrigeration Systems

Defrost Temperature Termination in Supermarket Refrigeration Systems 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.
Authors: ;
Publication Date:
OSTI Identifier:1028754
Report Number(s):ORNL/TM-2011/240
BT0201000; CEBT105; TRN: US201201%%27
DOE Contract Number:DE-AC05-00OR22725
Resource Type:Technical Report
Research Org:Oak Ridge National Laboratory (ORNL); Building Technologies Research and Integration Center
Sponsoring Org:EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
Country of Publication:United States
Language:English
Subject: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; EVAPORATORS; HEATERS; POTENTIAL ENERGY; REFRIGERATION; TESTING