Natural Working Fluids and Application II
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本场研讨会主讲嘉宾之一
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2007年8月24日下午1:00-5:30主题为：“Natural Working Fluids and Application II ”的研讨会在北京国际会议中心ROOM 305-B会议室举行。
演讲内容摘要：
Because of the steep decrease of the flow boiling heat transfer coefficient of CO2 at moderate vapor quality,the post-dryout heat transfer characteristic of CO2 is an important parameter in designing heat exchangers. In this study,the post-dryout heat transfer coefficients were analyzed by dividing two regions based on the observation of the trends of the heat transfer coefficients. One is a transition region,and the other is a fully dryout region. When the Shah model was applied to the heat transfer coefficients of the transition region,the mean deviation between the experimental results and the estimated data was 25.3%. The Groeneveld model was applied to the fully dryout region,yielding the mean deviation of 36.4%. The Groeneveld model is suggested for the post-dryout heat transfer coefficient,and the Yun et al. model is recommeded for the pre-dryout heat transfer coefficient. The critical liquid film model was applied to predict the dryout vapor quality in the present model.
第22届国际制冷大会于2007年8月21日在北京国际会议中心隆重召开，会议为来自世界各地的科学家和工程师提供一个互相交流和分享各自成功经验的机会，以使制冷技术在今后几十年保持持续快速的发展。
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