Modeling supermarket refrigeration energy use and demand
- Electric Power Research Inst., Palo Alto, CA (US)
- Foster Miller Inc., Waltham, MA (US)
A computer model has been developed that can predict the performance of supermarket refrigeration equipment to within 3% of field test measurements. The Supermarket Refrigeration Energy Use and Demand Model has been used to simulate currently available refrigerants R-12, R-502 and R-22, and is being further developed to address alternative refrigerants. This paper reports that the model is expected to be important in the design, selection and operation of cost-effective, high-efficiency refrigeration systems. It can profile the operation and performance of different types of compressors, condensors, refrigerants and display cases. It can also simulate the effects of store humidity and temperature on display cases; the efficiency of various floating head pressure setpoints, defrost alternatives and subcooling methods; the efficiency and amount of heat reclaim from refrigeration systems; and the influence of other variables such as store lighting and building design. It can also be used to evaluate operational strategies such as variable-speed drive or cylinder unloading for capacity control. Development of the model began in 1986 as part of a major effort, sponsored by the U.S. electric utility industry, to evaluate energy performance of then conventional single compressor and state-of-the-art multiplex refrigeration systems, and to characterize the contribution of a variety of technology enhancement features on system energy use and demand.
- OSTI ID:
- 5927509
- Journal Information:
- ASHRAE Journal (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (United States), Vol. 33:7; ISSN 0001-2491
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
POLICY AND ECONOMY
COOLING SYSTEMS
ENERGY MODELS
REFRIGERANTS
PERFORMANCE TESTING
REFRIGERATING MACHINERY
COMPUTERIZED SIMULATION
ENERGY CONSUMPTION
FIELD TESTS
EQUIPMENT
FLUIDS
MACHINERY
SIMULATION
TESTING
WORKING FLUIDS
290100* - Energy Planning & Policy- Energy Analysis & Modeling
298000 - Energy Planning & Policy- Consumption & Utilization