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A DYNAMIC ENERGY MODEL FOR DISPLAY CASES CONSIDERING FAULTS IN SUPERMARKETS FOR LOW GWP REFRIGERANTION

by Yanfei Li, Jian Sun, Zhiming Gao, Borui Cui
Publication Type
Conference Paper
Book Title
8th Thermal and Fluids Engineering Conference (TFEC)
Publication Date
Page Numbers
1669 to 1678
Publisher Location
College Park, Maryland, United States of America
Conference Name
ASTFE 2023, 8TH Thermal and Fluids Engineering Conference (TFEC)
Conference Location
College Park, Maryland, United States of America
Conference Sponsor
American Society of Thermal and Fluids Engineer
Conference Date
-

Display cases are widely used in supermarkets to demonstrate commercial goods for customers, like milk, frozen food, ice-cream, etc. There are two types of display case: open case and closed case. The goods inside display cases need to stay within a stable temperature range to meet the quality standards. However, due to variety of faults (e.g., leaving door opening), it is hard to maintain a stable temperature. The associated energy consumption from display cases is extremely high due to faults. There is a need for a dynamic energy model to accurately predict the good temperature and energy consumption under faults. A dynamic model is developed based on operation data collected through field tests in a low global warming potential (GWP) refrigeration system, at Oak Ridge National Laboratory.