System for studies of control strategies applied in the refrigerated chambers

Engenharia Agrícola

Alexandre Tizzei²  Carlos R. Meneghetti²  Nelson L. Cappelli¹  Claudio K. Umezu¹ 

[1] ,UNISALCampinas SP

关键词: energy-saving;    PID controller;    fuzzy controller;    cold storage;    economia de energia;    controlador PID;    controlador fuzzy;    armazenamento refrigerado;   

DOI  :  10.1590/S0100-69162011000500004

来源: SciELO

【 摘 要 】

The process of cold storage chambers contributes largely to the quality and longevity of stored products. In recent years, it has been intensified the study of control strategies in order to decrease the temperature change inside the storage chamber and to reduce the electric power consumption. This study has developed a system for data acquisition and process control, in LabVIEW language, to be applied in the cooling system of a refrigerating chamber of 30m³. The use of instrumentation and the application developed fostered the development of scientific experiments, which aimed to study the dynamic behavior of the refrigeration system, compare the performance of control strategies and the heat engine, even due to the controlled temperature, or to the electricity consumption. This system tested the strategies for on-off control, PID and fuzzy. Regarding power consumption, the fuzzy controller showed the best result, saving 10% when compared with other tested strategies.

【 授权许可】

CC BY   
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