Design and Performance Analysis of a Two-stage Tower-type Solar Cavity Receiver

WANG Ting, PANG Liping, YANG Yongping

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Journal of Chinese Society of Power Engineering ›› 2017, Vol. 37 ›› Issue (4) : 313-320.

Design and Performance Analysis of a Two-stage Tower-type Solar Cavity Receiver

  • WANG Ting, PANG Liping, YANG Yongping
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Abstract

A new type of two-stage tower-type solar cavity receiver was designed, and calculation models for its radiation, convection and flow were established under the Gaussian heat flux, so as to determine the piping layout and geometries in the receiver I and receiver Ⅱ, and to obtain the heat flux distribution in different positions. Main parameters concerning the working fluid temperature, steam quality, pressure drop and wall temperature distribution along typical pipes were specified according to the heat transfer and flow characteristics of the two-phase flow. Meanwhile, a series of systematic design processes were developed and an analysis was conducted on thermal performance of the two receivers. Results show that this type of two-stage cavity receiver can minimize the size of receiver I, while raise the average heat flux, reduce the mean temperature, and subsequently increase the thermal efficiency of the two receivers; besides, the multiple pass layout of coiled pipe header can make a more uniform distribution of the outlet parameters, preventing severe problems like overheating.

Key words

tower-type solar power generation / cavity receiver / Gaussian distribution heat fluxof / coiled pipe header

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WANG Ting, PANG Liping, YANG Yongping. Design and Performance Analysis of a Two-stage Tower-type Solar Cavity Receiver. Journal of Chinese Society of Power Engineering. 2017, 37(4): 313-320

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