Feasibility of the Defrost Control by Photoelectric Technology via Comparison with the Temperature Differential Defrosting Method
온도차 감지 제상법과의 비교를 통한 광센서 제상법의 타당성 검증을 위한 연구

Chang-Duk Jeon, Dong-Seon Kim
2014 Korean Journal of Air-Conditioning and Refrigeration Engineering  
Experiments were performed to verify if performance and characteristic curves obtained from the temperature differential defrosting method, where surface temperature is measured to judge defrosting condition, can be reproduced by the photoelectric technology where defrosting condition is judged by photoelectric sensors. The output voltage of a phototransistor and heating capacity, power consumption, and surface temperature of the outdoor heat exchanger are compared. The results showed that the
more » ... hotoelectric sensors can be used as a defrost control device. On-off control timings in temperature differential defrosting method are in good agreement with those predicted by the high and low threshold output voltages of the photoelectric sensor.
doi:10.6110/kjacr.2014.26.9.434 fatcat:cic6nqxaere2ljiutjvjhessva