工业余热相变换热器蓄放热实验研究  

Experimental S Stu tudy on Heat Storage dy and Release of Industrial Waste Heat Phase‑change Heat Exchanger

作　　者：闫全英 李红斌 王威[2] YAN Quanying;LI Hongbin;WANG Wei

机构地区：[1]北京建筑大学环境与能源工程学院,北京100044 [2]中国科学院过程工程研究所,北京100190

出　　处：《煤气与热力》2025年第3期8-14,共7页Gas & Heat

摘　　要：设计套管式工业余热相变换热器,建立相变换热器实验系统。对不同余热温度、蓄热时间条件下,相变换热器放热时间、供暖效果进行实验研究。采用比相变材料熔化温度稍高的余热温度时,只要蓄热时间足够,相变换热器内相变材料可以完全熔化。延长蓄热时间,可更长时间保持较高的室内温度,但对提高室内温度没有帮助。在相同蓄热时间条件下,提高余热温度,有利于延长放热持续时间、提高室内温度。综合考虑放热时间、室内外温差,余热温度70、80℃时,最佳蓄热时间均为5 h。The casing industrial waste heat phasechange heat exchanger was designed,and the experimental system of the phase‑change heat exchanger was established.Under the conditions of different waste heat temperatures and heat storage times,the heat release time and heating effect of the phase‑change heat exchanger were experimentally studied.When using a waste heat temperature slightly higher than the melting temperature of the phase‑change material,as long as the heat storage time is sufficient,the phase change material in the phase change heat exchanger can be completely melted.Extending the heat storage time can maintain a higher indoor temperature for a longer period of time,but it does not help to increase the indoor temperature.Under the same heat storage time conditions,increasing the waste heat temperature is conducive to prolonging the duration of heat release and increasing the indoor temperature.Taking into account the heat release time,indoor and outdoor temperature difference,the optimal heat storage time is 5 h when the waste heat temperature is 70℃and 80℃.

关 键 词：工业余热 相变换热器 相变材料 蓄热 放热 

分 类 号：TU995.7[建筑科学—供热、供燃气、通风及空调工程]