Results 251 to 260 of about 147,924 (303)

Effect of non-uniform heating on scCO2 heat transfer deterioration

Applied Thermal Engineering, 2020
Abstract The accurate prediction of heat transfer deterioration (HTD) is important to ensure the safe operation of scCO2 cycles driven by various heat sources. Here, the scCO2 heat transfer experiment is performed in a 10 mm diameter vertical tube, covering the ranges of pressures 7.51–21.1 MPa, mass fluxes 488–1500 kg/m2s and heat fluxes 43.7–488 kW/
Bingguo Zhu, Jinliang Xu, Jian Xie
exaly   +2 more sources

A model of heat transfer coefficient for supercritical water considering the effect of heat transfer deterioration

International Journal of Heat and Mass Transfer, 2019
Abstract Supercritical water has been widely used as working fluid in many thermodynamic cycles, predicting heat transfer coefficients of supercritical water precisely is of great importance to the system design. However, most of the existed correlations could not give satisfying results when heat transfer deterioration happens.
Fangbo Li, Bofeng Bai
exaly   +2 more sources

A review of heat transfer deterioration of supercritical carbon dioxide flowing in vertical tubes: Heat transfer behaviors, identification methods, critical heat fluxes, and heat transfer correlations

International Journal of Heat and Mass Transfer, 2020
Abstract The knowledge of heat transfer deterioration is of great significance for the application of supercritical fluids in nuclear reactors, solar power systems, and other industrial fields. In order to better understand the current status, the goal of this paper is to conduct a systemic and comprehensive research review on heat transfer ...
Jingzhe Xie, Hongbin Yan, Gongnan Xie
exaly   +2 more sources

Heat transfer under supercritical pressures and heat transfer deterioration boundaries

Thermal Engineering, 2006
Some relations for technical calculations of the normal heat transfer in a rising water flow under supercritical pressure (SCP) are analyzed and compared with recent experimental data obtained at the Institute of Physics and Engineering (Obninsk). The accuracy of recommendations concerning the calculation of heat transfer is estimated.
V. A. Grabezhnaya, P. L. Kirillov
openaire   +1 more source

A review of heat transfer deterioration mechanisms and mitigation strategies of supercritical CO2 heat transfer

International Journal of Heat and Fluid Flow
Xiaoxiao Xu
exaly   +2 more sources

Deterioration in heat transfer of endothermal hydrocarbon fuel

Journal of Thermal Science, 2011
Numerical studies under supercritical pressure are carried out to study the heat transfer characteristics in a single-root coolant channel of the active regenerative cooling system of the scramjet engine, using actual physical properties of pentane. The relationships between wall temperature and inlet temperature, mass flow rate, wall heat flux, inlet ...
Weixing Zhou, Wen Bao, Jiang Qin, Yunfeng Qu   +3 more
openaire   +1 more source

Heat transfer deterioration in a supercritical water channel

Nuclear Engineering and Design, 2010
Abstract Supercritical water is the working fluid in the supercritical water reactor (SCWR) because of its high thermal efficiency and simplicity. Computational fluid dynamics (CFD) technology has been applied in the studies of supercritical water in circular channels by solving conservation equations of mass, momentum, and energy.
Min-Tsung Kao, Min Lee, Yuh-Ming Ferng, Ching-Chang Chieng   +3 more
openaire   +1 more source