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In this paper, five kinds of typical improvement methods for the performance of SC cycle are compared and analyzed using the developed thermodynamic model based on the first and second laws of thermodynamics. The results shows that SCE cycle has a most positive effect. The COP of SCSLHX cycle only has an increase of 15% in high temperature conditions, conversely TCFGB cycle can improve by 15% and...
In kitchen environment, an efficient kitchen hood is especially demanded to ensure the provision of a healthy, comfortable and energy efficient working environment. The most accurate kitchen ventilation design method should be based on the heat gain of the appliances. In this paper the calculation equations of convection plumes, above kitchen appliances, were investigated. The heat source of cooking...
The experimental study on heat transfer and pressure drop for R417A flow boiling in horizontal smooth and internally grooved tubes was conducted. Based on the experimental results, heat transfer and pressure drop performance for R417A in different tubes were compared, and the influences of vapor quality and mass flux on heat transfer enhancement and pressure drop performance were analyzed and discussed...
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