Printed circuit heat exchanger thermal-hydraulic performance in supercritical CO2 experimental loop

被引：253
作者：
Nikitin, Konstantin [1 ]
Kato, Yasuyoshi [1 ]
Ngo, Lam [1 ]
机构：
[1] Tokyo Inst Technol, Nucl Reactors Res Lab, Meguro Ku, Tokyo 1528550, Japan
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2006年 / 29卷 / 05期
关键词：
experiment; compression system; CO2; transcritical cycle; heat transfer; pressure drop; heat exchanger; microchannel;
D O I：
10.1016/j.ijrefrig.2005.11.005
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Heat transfer and pressure drop characteristics of the Printed Circuit Heat Exchanger (PCHE) were investigated in an experimental supercritical CO2 loop. The inlet temperature and pressure were varied from 280 to 300 degrees C/2.2 to 3.2 MPa in the hot side and from 90 to 108 degrees C/6.5 to 10.5 MPa in the cold side while the mass flow rate was varied from 40 to 80 kg h(-1). The overall heat transfer coefficient range is 300-650 W m(-2) K-1 while the compactness with respect to the heat exchanger core is approximately 1050 m(2) m(-3). The empirical correlations to predict the local heat transfer coefficient and pressure drop factor as a function of the Reynolds number have been proposed for the tested PCHE. (c) 2005 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：807 / 814
页数：8
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