Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Estimation of Heat Losses From the Receivers for Solar Energy Collecting System of Korea Institute of Energy Research

  • Ryu, Siyoul (Graduate School, Department of Menhanical Engineering, Inha University) ;
  • Seo, Taebeom (Department of Menhanical Engineering, Inha University)
  • Published : 2000.12.01
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Abstract

Heat losses from the receivers for a dish-type solar energy collecting system constructed at Korea Institute of Energy Research are analyzed. The Stine and McDonald's model is used to estimate the convection loss. The Net Radiation method and the Monte-Carlo method are used to calculate the radiation heat transfer rate from the inside surface of the receiver to the surroundings. Two different receivers are suggested here and the performances of the receivers are estimated and compared with each other based on the prediction of the amount of heat losses from the receivers. The effects of the receiver shape and the radiation properties of the surface on the thermal performance are investigated. The performance of Receiver I is better than that of Receiver II, and the amount of solar irradiation that is not captured by the captured by the receiver after being reflected by the concentrator becomes significant if the temperature of the working fluid is low.

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References

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