THE EFFECT OF ADAPTIVE LIQUID-VAPOR SEPARATORS FOR ENHANCING CONDENSATION HEAT TRANSFER IN A CONDENSER

被引：0

作者：

Sun, Dinghao ^{[1
,2
]}

Jia, Li ^{[1
,2
]}

Dang, Chao ^{[1
,2
]}

机构：

[1] Beijing Jiaotong Univ, Inst Thermal Engn, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China

[2] Beijing Key Lab Flow & Heat Transfer Phase Changin, Beijing 100044, Peoples R China

来源：

JOURNAL OF ENHANCED HEAT TRANSFER | 2023年 / 30卷 / 02期

基金：

国家重点研发计划;

关键词：

parallel flow condenser; liquid-vapor separation; heat exchange perfor-mance; adaptive; PRESSURE-DROP; PHASE-SEPARATION; THERMAL-CHARACTERISTICS; FLOW; PERFORMANCE; TUBE; ENHANCEMENT; IMPROVEMENT; SMOOTH; R-134A;

D O I：

10.1615/JEnhHeatTransf.2022045332

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, an adaptive liquid separation structure for enhancing condenser heat transfer is pro-posed. Performances of two stage adaptive liquid-vapor separation condenser (ALSC) and two stage U-type liquid-vapor separation condenser (ULSC) with R134a as working fluid are studied and compared under different air speeds. Moreover, thermodynamic characteristics of the condenser with adaptive liquid-vapor separators are studied. The results show that the adaptive separator further improves the heat transfer performance of related tube passes, thus improving the thermodynamic characteristics of the entire ALSC. The heat transfer coefficient (HTC) of the ALSC is 14.0% -18.3% higher than that of the ULSC. Compared with the ULSC, the ALSC has lower pressure drop and higher unit coefficient of performance. The differences of HTC of the first three tube passes of the ALSC are no more than 9.8% under different heat loads, which proves that the ALSC has good adaptability.

引用

页码：69 / 88

页数：20

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