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The EEV Control of the Multi-type Air-conditioning System by using a Fuzzy Logic Superheat Temperature Setpoint Reset Algorithm  

한도영 (국민대학교 기계자동차공학부)
이상원 (국민대학교 기계공학과 대학원)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.15, no.5, 2003 , pp. 382-388 More about this Journal
Abstract
Refrigerant flow rates of the multi-type air-conditioning system can be regulated by electronic expansion valves (EEV). The performance of the multi-type air-conditioning system may be improved by lowering the superheat at the compressor suction side. In this study, a superheat temperature setpoint reset algorithm was developed by using fuzzy logics, and a PI algorithm was applied to control the superheat temperature near setpoints. Experimental results showed energy savings and stable operations at a multi-type air-conditioning system. Therefore, the developed setpoint reset algorithm may be effectively used for the EEV superheat temperature control of the multi-type air-conditioning system.
Keywords
Multi-type air-conditioning system; Electronic expansion valve; PI control; Fuzzy logic; Superheat temperature control; Superheat temperature setpoint reset algorithm; Energy efficiency ratio;
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