Abstract Basic structures of liquid-vapor separation cooling plates (LSCPs) and a liquid-vapor separation plate condenser (LVSPC) are innovatively designed. Strengthening heat transfer principle of the LSCPs is demonstrated by theoretical analysis. The average condensation heat transfer coefficients (ACHTCs) of the LSCPs are calculated and compared with conventional cooling plate (CCP). Results show that for a laminar flow, the ACHTCs of 2-parts liquid-vapor separation cooling plate and 3-parts liquid-vapor separation cooling plate are respectively 19% and 32% higher than the ACHTCs of the CCP in the same conditions. The ACHTC ratio of N-parts liquid-vapor separation cooling plates (NLSCP) to CCP is N 4 $\sqrt[4]{N}$in the same conditions. For a turbulent flow, results show the smaller the height of condensation area, the greater the ACHTCs of cooling plate. In the LVSPC study, operation conditions include the refrigerant R134a mass flux ranging from 22 to 32 kg/(m2.s) and inlet vapor quality from 0.5 to 1 for the saturated temperature of 40∘C. Calculation results showed that the ACHTCs of the LVSPC are 6–24% higher than the ACHTCs of the given common plate condenser (CPC), and similar to the CPC, the ACHTCs of the LVSPC increases with the increase of mass flux and vapor quality.

中文翻译：

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液汽分离板式冷凝器强化传热对比研究

摘要 创新设计了液汽分离冷却板（LSCP）和液汽分离板冷凝器（LVSPC）的基本结构。通过理论分析证明了LSCPs的强化传热原理。计算 LSCP 的平均冷凝传热系数 (ACHTC) 并与传统冷却板 (CCP) 进行比较。结果表明，对于层流，相同条件下2件式液汽分离冷却板和3件式液汽分离冷却板的ACHTCs分别比CCP的ACHTCs高19%和32%。在相同条件下，N 部分液汽分离冷却板 (NLSCP) 与 CCP 的 ACHTC 比为 N 4 $\sqrt[4]{N}$。对于湍流，结果表明凝结区的高度越小，冷却板的 ACHTC 越大。在 LVSPC 研究中，运行条件​​包括制冷剂 R134a 质量通量范围为 22 至 32 kg/(m2.s)，入口蒸汽质量为 0.5 至 1，饱和温度为 40∘C。计算结果表明，LVSPC 的 ACHTCs 比给定的普通板式冷凝器 (CPC) 的 ACHTCs 高 6-24%，并且与 CPC 相似，LVSPC 的 ACHTCs 随着质量通量和蒸汽质量的增加而增加。