한국태양에너지학회:학술대회논문집

The Korean Solar Energy Society (한국태양에너지학회)
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An experimental research on temperature accuracy in the refrigerator system with a variable speed compressor

  • Jung, Young-Seok (Dept. of Refrigeration and Air-conditioning system, Undergraduate, Pukyong National University) ;
  • Hong, Boo-Pyo (Dept. of Automation of Industry Facilities, Korea Polytech I College) ;
  • Bakhtiar, Agung (Dept. of Refrigeration and Air-conditioning system, College of Mechanical Engineering, Pukyong National University) ;
  • Yoon, Jung-In (Dept. of Refrigeration and Air-conditioning system, College of Mechanical Engineering, Pukyong National University) ;
  • Choi, Kwang-Hwan (Dept. of Refrigeration and Air-conditioning system, College of Mechanical Engineering, Pukyong National University)
  • Published : 2011.11.24
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Abstract

A precision of temperature control in the manufacturing process would be an important factor and become the main key to control production quality. Mostly manufacture machinery used oil as a coolant in their system so an accurate oil temperature control system become an absolute need in industrial field. This paper presents a experiment research to control the oil temperature constant at target point, in this experiment is $35^{\circ}C$ by using an inverter attached in compressor to varying the compressor speed. This control has been completed and tested through an experiment with different heat load of 4kW, 6kW, 7kW, 8kW and 10kW given under temperature constant room conditioned as $25^{\circ}C$. The results had shown the temperature deviation in the refrigerator has around $0.2^{\circ}C$ and the COP is 2.5 gained at 8kW and 10kW.

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