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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study on the Control of Water Flow and Water Temperature in the Radiant Cooling System through Simulations

시뮬레이션을 통한 바닥복사냉방 시스템의 공급유량 및 냉수온도 제어에 관한 연구

  • 김용이 (서울대학교 대학원 건축학과) ;
  • 윤혜림 (중부대학교 건설공학부) ;
  • 여명석 (서울대학교 건축학과)
  • Published : 2001.06.01
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Abstract

The objectives of this study are to analyze the control variables according to condensation occurrence, to find the range in floor surface temperature and frequency of condensation, and to evaluate the control methods through simulations when the radiant heating system is used for cooling. Through the simulation analysis the control methods such as on/off control, variable flow control and outdoor reset with indoor temperature feedback control are evaluated and compared. The results show that the lowest floor surface temperature is around $23^{\circ}C$, the surface condensation can be prevented by controlling indoor humidity within 20g/kg(DA0, and that outdoor reset with indoor temperature feedback control is more appropriate than on/off control and variable flow control with regard to prevention of the condensation and thermal comfort.

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References

  1. MS thesis, Seoul National University A Study on the Application of Radiant Floor Cooling using Ondol in Korean Residential Buildings Koo,S.Y.
  2. Proceedings of the SAREK '98 Summer Annual Conference A Comparative Study on the control Method of Hydronic Radiant Floor heating in Apartment Buildings Yeo, M. S.(et al.)
  3. MS thesis, Seoul National University A Study on the Time-Division Hot Water Supply for Energy Saving of Radiant Floor heating System Kim,Y.Y.
  4. Calculating Methods of Air Conditioning Systems with personal Computers Udagawa,M.
  5. Building and Environments v.23 no.3 Thermal Performance of a Hollow Core Concrete Floor System for Passive Cooling Radu Zmeureanu;Paul Fazio
  6. Ventilating and Air Conditioning Control Systems for Heating Haines, R. W.
  7. Cooling and Heating Load Calculation Manual(2nd ed.) Faye C. McQuiston
  8. Seoul Standard Weather Data SAREK
  9. ASHRAE Standard 55-1992: Thermal Environmental Conditions for Human Occupancy ASHRAE
  10. International Standard 7730 ISO