http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Flow boiling HFC245fa and heat transfer model for evaporation in Macro- channel
Nandi Sudheer,Donggyu Lee,Chaedong Kang 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6
An experimental approach has been suggested to implement waste heat recovery for industrial and commercial facility. Waste heat is spotlighted newly by a low heat source at the heat pump cycle of high temperature heat pump (HTHP) system as one of industrial facilities in order to produce steam. In this study, experiments were conducted to investigate the effect of evaporation conditions on the refrigerant, HFC245fa in an evaporator for HTHP. With the HFC 245fa, the experimental device consists with a test section of conventional size channel which is circular copper rod drilled with 7.8mm diameter and 570mm length. In order to investigate the heat transfer under constant heat flux condition the vapor quality and heat transfer rate are calculated from the measured temperature and pressure at the test section. At results, the boiling pattern and supplied heat flux are influenced to the vapor quality in HFC 245fa flow.