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A-Study on The Heat Transfer Performance of Evaporator Heat Transfer Tube for Absorption Chiller  

Kwon, Oh-Kyung (Energy System Technology Center, Korea Institute of Industrial Technology)
Cha, Dong-An (Energy System Technology Center, Korea Institute of Industrial Technology)
Yun, Jae-Ho (Energy System Technology Center, Korea Institute of Industrial Technology)
Kim, Hyo-Sang (HVAC System, Samjungtech)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.21, no.4, 2009 , pp. 215-221 More about this Journal
Abstract
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 coefficient of thermoexcel notch tube increases about 79.6% and 45.3% at the film Reynolds number 69.7 compared with that of bare tube and low fin tube, respectively. The thermoexcel notch tube is show the best performance considering pressure drop and heat transfer coefficient.
Keywords
Evaporator; Heat transfer; Heat transfer tube; Pressure drop;
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