| Title |
An Experimental Study of the Air-side Particulate Fouling of Finned-Tube Heat Exchangers of Air Conditioners by using Accelerated Particle-Loading System |
| Authors |
안영철 ; 조재민 ; 이재근 ; 이현욱 ; 안승표 ; 윤덕현 ; 하삼철 ; 강태욱 ; 옥주호 |
| Keywords |
Heat exchanger ; 열교환기 ; Particulate fouling ; 입자상 파울링 ; Pressure drop ; 압력손실 ; Cooling capacity ; 냉방능력 ; Air conditioner ; 공기조화기 |
| Abstract |
The air-side particulate fouling of the HVAC heat exchangers degrades the performance of cooling capacity, pressure drop across a heat exchanger, and indoor air quality. The purpose of this study is to investigate the fouling characteristics using accelerated particle loading system. The fouling characteristics are analyzed as functions of a dust concentration, a face velocity and a wet or dry surface condition. The pressure drop increases with increasing test operation and reaches constant asymptotic level. For the saturated condition due to particle loading, the pressure drop across the slitted finned-tube heat exchangers at the face velocity of 1m/sec increases up to 57% and the cooling capacity decreases about 2%. The cooling capacities are not affected greatly by the presence of the fouling deposits if the thickness of the fouling deposits can not change substantially the flow pattern through the fins. |