| Title |
The Possibility on Utilization of Underground Pit for Reduction ofCooling and Heating Load |
| Keywords |
지열 ; 지하피트 ; 자연환기 ; 확산계수 Geothermal energy ; Underground pit ; Natural ventilation ; Diffusion coefficient |
| Abstract |
The purpose of this study is to predict outlet temperature and humidity through underground pit for the reduction of cooling load and heating load. Commonly, the underground temperature is lower than outdoor in summer but the reverse happens in winter. When the outdoor average air temperature is 25.7℃ during cooling periods, the average outlet air tem-perature through underground pit is 23.6℃ with 3m-depth and 60m-length and is 22.2℃ with 3m-depth and 150m-length. When the outdoor average air temperature is 4.9℃ during heating periods, the average outlet air temperature through underground pit is 7.7℃ with 3m-depth and 60m-length and is 10.8℃ with 3m-depth and 150m-length. The outlet air temperature is affected by more length than depth of underground pit. The diffusion ratio of outdoor humid-ity is －7.7×10－8kg/s in cooling periods and 9.29×10－7kg/s in heating periods. |