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research-article

Numerical analysis of natural convection and radiation for tube solar receiver with glass window

[+] Author and Article Information
Zhang Guojun

School of architecture and civil engineering, Northeast Petroleum University
upczhangguojun@163.com

Liu Changyu

School of architecture and civil engineering, Northeast Petroleum University
lcy57649976@163.com

Li Dong

School of architecture and civil engineering, Northeast Petroleum University
lidong@nepu.edu.cn
lidonglvyan@126.com

1Corresponding author.

ASME doi:10.1115/1.4040291 History: Received December 11, 2017; Revised May 13, 2018

Abstract

Conjugate laminar natural convection heat transfer and air flow with radiation of tube solar receiver with glass window was numerically investigated. The discrete ordinates method was used to solve the radiative transfer equation. And the three dimensional steady-state continuity, Navier-Stokes and energy equations were solved. The temperature difference based on environment and high temperature surface of receiver is varied from 100K to 1000K. The influence of the surface emissivity, heating temperature, convective coefficient and convective temperature of environment on the heat transfer from the receiver with glass window has also been investigated. The numerical results indicated that the highest temperature of glass window increases and the high temperature area becomes wide, with the temperature of heating wall and surface emissivity increasing. Adopting higher convective coefficient of glass window can reduce the peak magnitude of temperature distribution on glass window of tube receiver up to 45%.

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