| Title |
An Energy Performance Evaluation of UFAD System under the Various Conditions of Thermal Load |
| Authors |
윤성훈(Seong-Hoon Yoon) ; 장향인(Hyang-In Jang) ; 김경아(Kyung-Ah Kim) ; 유기형(Ki-Hyung Yu) ; 서승직(Seung-Jik Suh) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2013.25.1.014 |
| Keywords |
바닥급기시스템 ; 천장급기 시스템 ; 에너지성능평가 UFAD ; CBAD ; Energy performance evaluation |
| Abstract |
The present study has been conducted for evaluating and comparing the performance of the underfloor air distribution system(UFAD) and the ceiling based air distribution system(CBAD) under cooling condition. Simulations and experiments were carried out for verifying the model by TRNSYS program about UFAD and CBAD. The results of simulation for various conditions of thermal load are summarized as followings. UFAD had an advantage for making thermal comfort because of lower temperature of the floor surface. Moreover, UFAD showed lower fan power about 30～50% than CBAD under the same conditions of thermal load. The energy saving rates of UFAD were increased to 17.7% in proportion to the thermal load on unoccupied zone(lighting). Ultimately, additional investigations should be done for analyzing optimized operating conditions of UFAD with considering the thermal performance of building envelop and the thermal load. |