EXPERIMENTAL RESEARCH ON HEAT RELEASE OF HEAT STORAGE DEVICE BASED ON SPIRAL COIL

doi:10.19912/j.0254-0096.tynxb.2021-0659

Abstract

Abstract: Based on the constant pitch spiral coil heat storage device and its improvement, a gradual spiral coil heat storage device is designed, and the PCM heat release performance of HTF in the coil under different Dean’s number（De） and inlet temperature is investigated.Studies have demonstrated that when inlet temperature are constant,an increase in De shortens the heat release time, and the heat release time of the gradual pitch at different inlet temperatures is shorter than that of the constant pitch, suggesting the improvement in the heat release efficiency.

Key words: solar energy, phase change heat storage, enhanced heat transfer, solar energy utilization rate, thermal storage device

摘要： 基于恒定螺距螺旋盘管蓄热装置并进行装置改进,设计出渐变式螺旋盘管蓄热装置,并探究盘管内换热流体（HTF）在不同迪恩数（De）、入口温度下的PCM放热性能。研究表明：入口温度一定时,De增大会缩短放热时间,且在不同入口温度下渐变式螺距放热时间较恒定螺距缩短,从而提高放热效率。

关键词: 太阳能, 相变蓄热, 强化传热, 太阳能利用率, 蓄热装置

CLC Number:

TK11⁺4

Fang Guihua, Liu Yingjie, Wang Feng, Tan Xin. EXPERIMENTAL RESEARCH ON HEAT RELEASE OF HEAT STORAGE DEVICE BASED ON SPIRAL COIL[J]. Acta Energiae Solaris Sinica, 2022, 43(12): 166-171.

方桂花, 刘颖杰, 王峰, 谭心. 基于螺旋盘管蓄热装置放热实验研究[J]. 太阳能学报, 2022, 43(12): 166-171.

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