• Title/Summary/Keyword: 초기냉방과정

Search Result 2, Processing Time 0.018 seconds

Computer simulation of cooling load and cool-down performance in an automotive air-conditioning system (자동차 냉방부하 계산 및 초기 냉방성능 시뮬레이션)

  • Oh, S.H.;Lee, C.W.;Won, S.P.
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
    • /
    • v.9 no.3
    • /
    • pp.364-375
    • /
    • 1997
  • The fundamental theory and technical approach to aid design and development of an automotive air-conditioning system are presented. The evaluation methods for transient cooling load transferred to a passenger compartment and simulation of automotive air-conditioning components are outlined. The structure of the computer program, the experiemntal correlations, and the simulation results are also included. The total cooling load of the white-colored car is reduced upto 5% for that of the black-colored car when the car is running. Using the infrared reflectance glass, we can also obtain 5% reduction of the total cooling load for the common glass.

  • PDF

Analysis of Air Flow for Improving the Heat Storage Efficiency of the Solar-heated Greenhouse with Rock Bed Storage (자갈축열온실의 축열성능 향상을 위한 공기유동 분석)

  • 이석건;이종원;이현우
    • Proceedings of the Korean Society for Bio-Environment Control Conference
    • /
    • 2003.04a
    • /
    • pp.195-198
    • /
    • 2003
  • 자갈축열 태양열온실은 주간에 일사로 데워진 온실 내부공기를 온실하부에 설치된 자갈축열층사이로 강제순환시켜 자갈에 에너지를 축열한다. 이러한 축열과 방열과정을 통하여 겨울철 야간에 난방시스템으로 이용하고, 여름철에는 냉방효과를 꾀하게 된다. 온실내 공기가 축열층을 통과하는 동안의 열전달은 강제대류열전달이며, 이 경우 축열층내의 열이동은 축열층내 공기와 자갈표면온도가 초기에는 열적으로 평형상태로 존재하다가 순환공기의 온도상승에 따라 열전달이 일어나게 된다. (중략)

  • PDF