Open AccessExperimental and numerical study on thermal‐hydraulic performance of printed circuit heat exchanger for liquefied gas vaporization
Author(s) -
Zhao Zhongchao,
Chen Xudong,
Zhang Xiao,
Ma Xiaolong,
Yang Shan
Publication year - 2020
Publication title -
energy science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 29
ISSN - 2050-0505
DOI - 10.1002/ese3.525
Subject(s) - supercritical fluid , vaporization , pressure drop , heat exchanger , materials science , nitrogen , nusselt number , thermodynamics , supercritical flow , thermal hydraulics , mechanics , turbulence , chemistry , heat transfer , analytical chemistry (journal) , reynolds number , chromatography , physics , organic chemistry
The thermal‐hydraulic performance of printed circuit heat exchanger (PCHE) through an experimental vaporization process of supercritical nitrogen was investigated. The inlet temperature of supercritical nitrogen was controlled between 113 K and 129 K, while its pressure was controlled between 4.5 MPa and 6 MPa. The mass of supercritical nitrogen corresponds to the turbulent state on the cold side of PCHE, which was maintained at 299.94 kg/h. A numerical processing of the same supercritical nitrogen flow through a single channel of PCHE cold side was presented. The numerical results were validated by comparison with the experimental data. Both experimental and numerical results showed that the increased inlet supercritical nitrogen pressure improved the heat transfer performance and pressure drop decreased with increasing the pressure at the PCHE cold side. Furthermore, the Fanning friction coefficient ( f ) and the Nusselt number ( Nu ) of supercritical nitrogen flow obtained by numerical simulation and empirical correlation were compared.