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RESEARCH PAPERS

Prototype of Middle-Temperature Solar Receiver/Reactor With Parabolic Trough Concentrator

[+] Author and Article Information
Hongguang Jin1

Institute of Engineering Thermophysics,  Chinese Academy of Sciences, P.O. Box 2706, Beijing 100080, Peoples’ Republic of Chinahgjin@mail.etp.ac.cn

Jun Sui, Hui Hong

Institute of Engineering Thermophysics,  Chinese Academy of Sciences, P.O. Box 2706, Beijing 100080, Peoples’ Republic of China

Zhifeng Wang

Institute of Electrical Engineering,  Chinese Academy of Sciences, P.O. Box 2703, Beijing 100080, Peoples’ Republic of China

Danxing Zheng, Zhi Hou

 Beijing University of Chemical Technology, P.O. Box 100, Beijing 100029, Peoples’ Republic of China

1

Corresponding author.

J. Sol. Energy Eng 129(4), 378-381 (Jun 06, 2007) (4 pages) doi:10.1115/1.2769698 History: Received December 03, 2006; Revised June 06, 2007

This paper manufactured an original middle-temperature solar receiver/reactor prototype, positioned along the focal line of one-axis parabolic trough concentrator, representing the development of a new kind of solar thermochemical technology. A 5kW prototype solar reactor at around 200300°C, which is combined with a linear receiver, was originally manufactured. A basic principle of the design of the middle-temperature solar reactor is identified and described. A representative experiment of solar-driven methanol decomposition was carried out. Experimental tests were conducted from 200°C to 300°C under mean solar flux of 300800Wm2 and at a given methanol feeding rate of 2.1Lh. The conversion of methanol decomposition yielded up to 50–95%, and the efficiency of solar thermal energy conversion to chemical energy reached 30–60%. The experimental results obtained here prove that the novel solar receiver/reactor prototype introduced in this paper can provide a promising approach to effectively utilize middle-temperature solar thermal energy by means of solar thermochemical processes.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figure 1

Concept diagram of the middle-temperature solar receiver/reactor

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Figure 2

Photograph of the 5kW solar receiver/reactor prototype

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Figure 3

Experimental setup of the 5kW solar receiver/reactor

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Figure 4

Variation of the methanol conversion obtained experimentally with the mean solar flux at a given methanol feeding rate

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Figure 5

Thermochemical efficiency of solar thermal energy conversion into chemical energy obtained experimentally at different mean solar flux

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