Research and development of highly energy-efficient supermarket refrigeration systems. Volume 1. Executive summary and task reports
The Supermarket Energy Systems Project was structured to investigate and develop new highly energy-efficient supermarket refrigeration systems. A market and system analysis was performed for supermarket energy systems. The market analysis describes the overall structure of the supermarket industry as well as the distribution of energy-using systems in a typical supermarket. The market analysis evaluates the supermarket industry and the typical supermarket as customers buying energy-saving equipment. The systems analysis includes all supermarket energy-saving systems but focuses on the refrigeration system, the major energy-consuming system in a supermarket. A computer simulation program for supermarket refrigeration was developed and has been used to perform a sensitivity analysis, identifying those improvements or changes to the refrigeration system which offer the greatest energy-saving potential. Energy-saving improvements are described and evaluated. The results of the marketing and system analyses are combined with government, manufacturer, and customer criteria to rank various energy-saving improvements in order of desirability for further study, development and commercialization. A supermarket refrigeration system consisting of: unequal, parallel compressors; condenser with floating head-pressure control; and a microprocessor-based electronic control system was analyzed, designed, fabricated, and recommended. A compressor capacity control algorithm was designed to select the optimum compressor combination for each operating condition to match compressor capacity to refrigeration load. A microprocessor system based on an Intel 8085 microprocessor was selected for system control and data acquisition. An economic analysis was performed.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Foster-Miller Associates, Inc., Waltham, MA (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5268298
- Report Number(s):
- ORNL/Sub-80-61601/1-Ex.Summ.; ON: DE82016576
- Resource Relation:
- Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COMMERCIAL BUILDINGS
REFRIGERATING MACHINERY
COMPUTERIZED SIMULATION
ECONOMIC ANALYSIS
ENERGY EFFICIENCY
COMPRESSORS
CONTROL SYSTEMS
DESIGN
ELECTRONIC CIRCUITS
ENERGY CONSERVATION
ENERGY CONSUMPTION
MARKETING
MICROPROCESSORS
PERFORMANCE TESTING
PRESSURE CONTROL
RESEARCH PROGRAMS
SENSITIVITY ANALYSIS
STANDARDS
SYSTEMS ANALYSIS
BUILDINGS
COMPUTERS
CONTROL
ECONOMICS
EFFICIENCY
MACHINERY
MICROELECTRONIC CIRCUITS
SIMULATION
TESTING
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