Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Study on Fresh Air Load Reduction System by Using Geothermal Energy - Reducing Effect of a Fresh Air Load by Combining with Air-heated Solar Collector -

지열을 이용한 공조외기부하저감 시스템에 관한 연구 - 공기식 집열기와의 병용에 의한 공조외기부하저감 효과 -

  • 손원득 (일본 삼중대학교 공동벤처연구기관) ;
  • 이성 (동의대학교 빌딩시스템공학과)
  • Published : 2004.12.01
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Abstract

This paper presents thermal behaviors and performances of a fresh air load reduction system by using earth tube system combined with air-heated solar collector. The earth tube system reduces a fresh air load by heat exchange with soil throughout the year. In the previous experimental research, it was clarified that the earth tube system was very useful as a fresh air load reduction system. However, since outlet temperature of the fresh air which was heated by earth tube system was below 15$^{\circ}C$ in winter, it is not suitable to introduce the fresh air into the place of residence directly. Therefore, a simulation model using the simple heat diffusion equation was used to examine a rising effect of outlet air temperature in winter by combining with air-heated solar collector. An improvement of annual performance by control of operation is also quantitatively examined. In conclusion, it is confirmed that its performance is improved by control of operation throughout the year and outlet air temperature rose by combining with air-heated solar collector.

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References

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