In this study, the effects of mass flux, heat flux, and condensation pressure according to mean vapor quality on the condensation heat transfer coefficient and frictional pressure drop of R124 were analyzed for plate heat exchangers with different chevron angles. The heat transfer coefficient increased with an increase in the mean vapor quality, mass flux, and heat flux. However, it decreased with an increase in the condensation pressure. The frictional pressure drop exhibited a similar trend to that of the heat transfer coefficient, but it was not significantly affected by a change in the heat flux. Furthermore, Nusselt number and friction factor correlations were developed based on the experimental data of R124. Two types of integrated correlations, namely those for the heat transfer coefficient and friction factor, were developed considering R1233zd(E) and R1234ze(E), based on previous studies. Subsequently, integrated correlations were developed for R124, R1233zd(E) and R1234ze(E). For the integrated correlations, the correction factors C₁ and C₂ are introduced and compared with those proposed in previous studies. For the validation of the correction factors, the final integrated correlations including R134a and R410A were developed, and the correlations predicted 88.1% and 73.2%, respectively within the error range of 25%.

在这项研究中，根据平均蒸汽质量，质量通量、热通量和冷凝压力对具有不同 V 形角的板式换热器的 R124 的冷凝传热系数和摩擦压降的影响进行了分析。传热系数随着平均蒸汽质量、质量通量和热通量的增加而增加。然而，它随着冷凝压力的增加而降低。摩擦压降表现出与传热系数相似的趋势，但不受热通量变化的显着影响。此外，基于 R124 的实验数据开发了 Nusselt 数和摩擦系数相关性。两种类型的综合相关性，即传热系数和摩擦系数的相关性，基于先前的研究，考虑 R1233zd(E) 和 R1234ze(E) 开发。随后，为 R124、R1233zd(E) 和 R1234ze(E) 开发了综合相关性。对于积分相关性，校正因子 C₁和C ₂被介绍并与先前研究中提出的那些进行比较。为了验证修正因子，开发了包括R134a和R410A在内的最终综合相关性，在25%的误差范围内，相关性预测分别为88.1%和73.2%。