Energy Saving Refrigeration System for Supermarket

Author

Unezaki, Fumitake ; Anzai, Youichi ; Ikeda, Takashi ; Matsuoka, Fumio

Author_Institution

Mitsubishi Electr. Corp.

fYear

2005

Firstpage

482

Lastpage

483

Abstract

The energy saving refrigeration system that is composed of a condensing unit and the refrigerated display cases has been developed. In this system, the DC inverter compressor controls the evaporating temperature and linear expansion valves control superheat at the outlet of evaporators in the refrigerated display cases. The target value of the evaporating temperature is calculated from the temperature difference between the refrigerated display cases and those cooling targets. The target value of superheat is set at 8 degrees that is the best value for energy conservation of the R404A refrigeration system. In this way, the electric power consumption of the refrigeration system is reduced by 31% in comparison with the conventional system

Keywords

compressors; cooling; energy conservation; evaporation; power consumption; refrigeration; DC inverter compressor control; R404A refrigeration system; condensing unit; cooling target; electric power consumption; energy conservation; energy saving refrigeration system; evaporator; expansion valve control; supermarket; Control systems; Cooling; Costs; Displays; Energy consumption; Frequency; Inverters; Refrigeration; Temperature control; Valves; condensing unit; control; energy saving; expansion valve; refrigerated display case;

fLanguage

English

Publisher

ieee

Conference_Titel

Environmentally Conscious Design and Inverse Manufacturing, 2005. Eco Design 2005. Fourth International Symposium on

Conference_Location

Tokyo

Print_ISBN

1-4244-0081-3

Type

conf

DOI

10.1109/ECODIM.2005.1619271

Filename

1619271