EXPERIMENTAL STUDY ON HEAT TRANSFER CHARACTERISTICS OF AIR-SAND MOVING BED HEAT EXCHANGER

Yang Jianmeng; Sun Yuanmin; Hou Dangyuan; Li Bin; Meng Fanxu; Chen Haisheng

doi:10.19912/j.0254-0096.tynxb.2020-0260

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (2) : 276-281. DOI: 10.19912/j.0254-0096.tynxb.2020-0260

EXPERIMENTAL STUDY ON HEAT TRANSFER CHARACTERISTICS OF AIR-SAND MOVING BED HEAT EXCHANGER

Yang Jianmeng¹, Sun Yuanmin¹, Hou Dangyuan¹, Li Bin¹, Meng Fanxu¹, Chen Haisheng²

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Abstract

An experimental platform of air- sand moving bed heat exchanger is established for solar thermal power generation system and the heat transfer performance of air - sand moving bed heat exchanger under different parameters was studied experimentally. Based on the experimental data, the correlation formula of gas-solid heat transfer coefficient is obtained by using linear regression fitting, and the average error between the predicted value and the experimental value of the whole experimental condition is 3.57%. The results show that the higher Reynolds number can improve the heat transfer effectiveness of air-sand moving bed heat exchanger, When the air inlet temperature is 281 ℃, the heat transfer effectiveness of air-sand moving bed heat exchanger can reach 93.56%. When the flow rate of sand is constant, the change of sand particle size will not greatly affect the heat transfer effect of air-sand moving bed heat exchanger.

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solar thermal power generation / air-sand / moving bed heat exchanger / heat transfer effectiveness / influence factors / experimental study

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Yang Jianmeng, Sun Yuanmin, Hou Dangyuan, Li Bin, Meng Fanxu, Chen Haisheng. EXPERIMENTAL STUDY ON HEAT TRANSFER CHARACTERISTICS OF AIR-SAND MOVING BED HEAT EXCHANGER[J]. Acta Energiae Solaris Sinica. 2022, 43(2): 276-281 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0260

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