천장 카세트형 냉·난방기에 의해 형성되는 학교 교실의 실내 열환경 및 공기환경의 개선에 대한 연구
A Study on the Improvement of Indoor Thermal and Air Environment Made by Ceiling Cassette Type Cooling and Heating Unit in Classrooms
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초록
Ceilingcassettetypeairconditionerhasbeenamainstream asaheating/coolingsystem recentlyinschool,Korea.Inthisstudy,indoorthermalenvironmentsmadebyceilingcassettetypeairconditionerwereinvestigated byCFD simulation.ConcentrationsofCO2wereinvestigatedbyafieldmeasurement.Indoorthermalenvironment withthevelocityinletangleof45°from theceilinginheatingseasonwasveryununiform sothatthermalarea wasdividedintotwopartsthosetheoneiswindow sidewhichiscold,andtheotheriscorridorsidewhichis hot.Incoolingseasonunderthesamecondition,thereareareastoohotortoocold.Ifthevelocityinletangleis setin 30°from theceiling,indoorthermalenvironmentswasimprovedgreatly in cooling season andheating season,too.Also,from thefieldmeasurementofCO2 concentrations,itwassuggestedtoinstallventilatorswith properairvolumeconsideredthenumberofclassstudents.
Abstract
Ceilingcassettetypeairconditionerhasbeenamainstream asaheating/coolingsystem recentlyinschool,Korea.Inthisstudy,indoorthermalenvironmentsmadebyceilingcassettetypeairconditionerwereinvestigated byCFD simulation.ConcentrationsofCO2wereinvestigatedbyafieldmeasurement.Indoorthermalenvironment withthevelocityinletangleof45°from theceilinginheatingseasonwasveryununiform sothatthermalarea wasdividedintotwopartsthosetheoneiswindow sidewhichiscold,andtheotheriscorridorsidewhichis hot.Incoolingseasonunderthesamecondition,thereareareastoohotortoocold.Ifthevelocityinletangleis setin 30°from theceiling,indoorthermalenvironmentswasimprovedgreatly in cooling season andheating season,too.Also,from thefieldmeasurementofCO2 concentrations,itwassuggestedtoinstallventilatorswith properairvolumeconsideredthenumberofclassstudents.
참고문헌 (2)
- 황정화, "천장형 냉방기를 이용한 교실의 온열환경 개선에 관한 연구", 한국생활환경학회지, 13(1), pp.74~88 (2006), 한국생활환경학회
- Ahn, C.L, "Characteristics of Thermal Environment and Evaluation of Thermal Comfort in Classrooms in Winter", J. Korean. Soc. Living. Environ. Sys, 10(4), pp.251~256 (2003)