The present study has been conducted on condensation heat transfer characteristics of the brazed plate heat exchanger using refrigerant R-22 as a condenser. In this study of R-22 condensation heat transfer in the vertical plate heat exchangers, the experimental conditions are saturation pressure of 1.19 ～ 1.53 MPa, refrigerant mass flux of 35 ～ 65 kg/m2s, heat flux of 2.67 kW/m2. The present study, the condensation heat transfer coefficients has been observed with the refrigerant vapor quality varied from 0.9 to 0.1. The condensation heat transfer coefficient apparently increases with increasing the vapor quality. The condensation heat transfer coefficient slightly increases with decreasing saturation pressures and with increasing refrigerant mass flux. An appropriately proposed correlation for R-22 has less error ±15.5% in comparison with the experimental data.
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机译：本研究是针对使用制冷剂R-22作为冷凝器的钎焊板式换热器的冷凝传热特性进行的。在R-22冷凝器在垂直板式换热器中的研究中，实验条件为饱和压力为1.19〜1.53 MPa，制冷剂质量通量为35〜65 kg / m2s，热通量为2.67 kW / m2。在本研究中，在制冷剂蒸气质量从0.9到0.1变化的情况下，已经观察到冷凝传热系数。凝结传热系数显然随着蒸气质量的增加而增加。冷凝热传递系数随着饱和压力的降低和制冷剂质量流量的增加而略有增加。与实验数据相比，适当建议的R-22相关性具有较小的误差±15.5％。
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