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Experiment study of a quartz tube falling particle receiver |
Tianjian WANG1,2,3, Fengwu BAI1,2,3(), Shunzhou CHU1,2,3, Xiliang ZHANG1,2,3, Zhifeng WANG1,2,3 |
1. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China 2. Key Laboratory of Solar Thermal Energy and Photovoltaic System, Chinese Academy of Sciences, Beijing 100190, China 3. Beijing Engineering Research Center of Solar Thermal Power, Beijing 101107, China; University of Chinese Academy of Sciences, Beijing 100190, China |
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Abstract This paper presents an experimental evaluation of a specially designed falling particle receiver. A quartz tube was used in the design, with which the particles would not be blown away by wind. Concentrated solar radiation was absorbed and converted into thermal energy by the solid particles flowed inside the quartz tube. Several experiments were conducted to test the dynamic thermal performance of the receiver on solar furnace system. During the experiments, the maximum particle temperature rise is 212°C, with an efficiency of 61.2%, which shows a good thermal performance with a falling distance of 0.2 m in a small scale particle receiver. The average outlet particle temperature is affected by direct normal irradiance (DNI) and other factors such as wind speed. The solid particles obtain a larger viscosity with a higher temperature while smaller solid particles are easier to get stuck in the helix quartz tube. The heat capacity of the silicon carbide gets larger with the rise of particle temperature, because as the temperature of solid particles increases, the temperature rise of the silicon carbide decreases.
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Keywords
solar thermal electricity
central receiver
particle receiver
experimental research
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Corresponding Author(s):
Fengwu BAI
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Just Accepted Date: 22 August 2017
Online First Date: 26 September 2017
Issue Date: 14 December 2017
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