Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2000.04b
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- Pages.104-107
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- 2000
A Study on the Characteristics of Evaporative Heat Transfer for Carbon Dioxide in a Horizontal Tube
수평원관 내 이산화탄소의 증발열전달 특성 연구
Abstract
Evaporative heat transfer characteristics of carbon dioxide has been investigated. Experiment has been carried out for seamless stainless steel tube with outer diameter of 9.55 mm and inner diameter of 7.75 mm. Direct heating method is used for supplying heat to the refrigerant was uniformly heated by electric current which was applied to the tube wall. The saturation temperature of refrigerant is calculated from the measured saturation pressure by using an equation of state. Inner wall temperature was calculated from measured outer wall temperature, accounting for heat generation in the tube and heat conduction through the tube wall. Mass Quality of refrigerant was calculated by considering energy balance in the preheater and the test section. Heat fluxes were set at 12, 16, 20, 23, and
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