Reduction of Cooling Load using Outdoor Air Cooling

외기냉방을 이용한 냉방부하 절감 연구

  • Kim, Min-Yang (Graduate School of Housing, Seoul National University of Science and Technology) ;
  • Kim, Young-Il (School of Architecture, Seoul National University of Science and Technology) ;
  • Chung, Kwang-Seop (School of Architecture, Seoul National University of Science and Technology)
  • 김민용 (서울과학기술대학교 주택대학원) ;
  • 김영일 (서울과학기술대학교 건축학부) ;
  • 정광섭 (서울과학기술대학교 건축학부)
  • Received : 2011.05.06
  • Accepted : 2011.05.23
  • Published : 2011.06.01

Abstract

Due to enhanced sealing and insulation of buildings, extensive use of glasses for building envelopes and increased use of heat generating office equipments, energy consumption of modem buildings for cooling is steadily increasing. With outdoor air cooling(ODAC) system, cooling load can be reduced by exchanging indoor air with the cold outdoor air during spring and fall seasons. If ODAC is operated based only on temperature, total cooling load may virtually increase if the outdoor humidity is high. To overcome this problem, ODAC should be controlled based on enthalpy. In this work energy saving characteristics of enthalpy controlled ODAC is studied using dynamic simulation. The result shows that cooling load can be reduced by 27% by adopting ODAC.

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