최근 기상데이터를 반영한 냉난방 설계용 외기 온습도의 재산정

Standard outdoor temperature and humidity that reflect the local climate conditions are important for making accurate prediction of cooling and heating loads. The current standard outdoor temperature and humidity conditions were calculated and compiled by the Ministry of Land, Infrastructure and Transport (MOLIT) using old weather data. The objective of this study was to update the outdoor climate design conditions by including recent weather data. Weather data of 8 representative regions (Seoul, Busan, Daegu, Daejeon, Incheon, Gwangju, Ulsan, Jeju) of Korea were acquired from the open portal site of Korea Meteorological Administration, and ASHRAE Bin method for a one-year period was used to recalculate the design conditions of temperature and humidity. When recalculated temperatures were compared with the current MOLIT standard, the average differences in heating and cooling temperatures were 1.5℃ and 0.3℃, respectively. Differences in heating relative humidity and cooling wet bulb temperature between the results of this work and the MOLIT data were 0.8% and 1.6℃ in average, respectively. As changes in weather are inevitable due to changes in natural environment, it is recommended to use the newly calculated outdoor temperature and humidity design conditions for optimal design of heating and cooling loads.