대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2008년도 동계학술발표대회 논문집
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- Pages.192-197
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- 2008
흡수식 냉온수기용 증발기의 전열성능에 관한 연구
A study on the heat transfer performance of evaporator for absorption chiller
- 발행 : 2008.11.21
초록
The objectives of this paper are to measure the heat transfer and pressure drop of the heat transfer tube for an evaporator of absorption system applications. Five types of heat transfer tubes with different shape and heat transfer area are tested in the present experiment. Heat transfer and pressure drop performance of heat transfer tubes are measured in various operating conditions, and compared each other. The results show that the heat transfer rate of thermoexcel notch tube and low fin tube increases about 27.6% and 11.6% at the refrigerant flow rate 250 kg/h compared with that of bare tube, respectively. The thermoexcel notch tube is shown the best performance considering pressure drop and heat transfer coefficient.