A radiant heating applied to floor, so called 'Ondol', is a traditional heating method in Korea and has been widely used. The form of the Ondol has been modified so that it can be applied to modern residential buildings. However, the Ondol system has limitation in keeping comfortable indoor-environment, because the Ondol is able to control floor temperature only. Moreover, a Korean government stipulated that new residential buildings are to be 0.7 ACH (Air Change per Hour) to protect indoor air quality from toxic substances emitted form construction materials, furniture and etc.Therefore, raised-floor Ondol with ventilation that can provide pre-heated fresh outdoor-air was suggested to solve this problem. Under this system, the outdoor air flows through ducts in the cavity between slabs and Ondol panels so that it could be supplied to rooms after it was preheated.The experiment was carried out at apartment housing under construction in Seoul, 16th~ 18th February 2008. The following conclusions can be made: (1) An average surface temperature of duct was 9.1 so that is lower than expected value. (2) An average indoor air temperature was 17.4 (Max. 19.9 ) which could satisfy with the rage of thermal comfort for indoor air (17~22 ) taking sensor's tolerance into consideration. (3) The surface temperature of floor swung between 22 and 32 .
展开▼
