STUDY ON PHOTOTHERMAL AND WATER PRODUCTION PERFORMANCE OF TELESCOPIC CAVITY IN DESALINATION PROCESS

Ji Yaning; Wu Gang; Feng Chaoqing; Cheng Ruifeng; Yuan Yu; Ma Qianlei

doi:10.19912/j.0254-0096.tynxb.2021-0270

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (9) : 111-118. DOI: 10.19912/j.0254-0096.tynxb.2021-0270

STUDY ON PHOTOTHERMAL AND WATER PRODUCTION PERFORMANCE OF TELESCOPIC CAVITY IN DESALINATION PROCESS

Ji Yaning^1,2, Wu Gang², Feng Chaoqing¹, Cheng Ruifeng², Yuan Yu², Ma Qianlei²

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Abstract

In this paper, a multi-stage tubular desalination system based on the Fresnel reflector field and falling film method was studied. Two kinds of casing cavity structures were analyzed, and the circular cavity with a better optical performance was determined. The internal desalination process of the circular cavity was simulated. The energy flow model of the two-stage desalination system was established, and steady-state and transient heating experiments were carried out. The empirical relationship of natural convection mass transfer in the crescent-shaped finite space was calculated from the experimental data at constant temperature. The transient test results show that the theoretical calculation value of water production is in good agreement with the measured value. The maximum water yield of the first and second stages were 3.79 and 2.64 kg/h, respectively.

Key words

desalination / solar collectors / evaporation / tubular / falling film / stage number

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Ji Yaning, Wu Gang, Feng Chaoqing, Cheng Ruifeng, Yuan Yu, Ma Qianlei. STUDY ON PHOTOTHERMAL AND WATER PRODUCTION PERFORMANCE OF TELESCOPIC CAVITY IN DESALINATION PROCESS[J]. Acta Energiae Solaris Sinica. 2022, 43(9): 111-118 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0270

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