化工学报 ›› 2017, Vol. 68 ›› Issue (7): 2684-2695.DOI: 10.11949/j.issn.0438-1157.20161282
谢静超1, 汤逸羚1, 张召锋1, 王未1, 刘加平1, 王建平2
收稿日期:
2016-09-13
修回日期:
2017-04-13
出版日期:
2017-07-05
发布日期:
2017-07-05
通讯作者:
谢静超
基金资助:
国家自然科学基金重大项目(51590912);国家自然科学基金面上项目(51378025);青海民族大学合作基金项目(004000514315503)。
XIE Jingchao1, TANG Yiling1, ZHANG Zhaofeng1, WANG Wei1, LIU Jiaping1, WANG Jianping2
Received:
2016-09-13
Revised:
2017-04-13
Online:
2017-07-05
Published:
2017-07-05
Contact:
10.11949/j.issn.0438-1157.20161282
Supported by:
supported by the Major Program of the National Natural Science Foundation of China (51590912), the General Project of the National Natural Science Foundation of China (51378025) and the Cooperation Fund of Qinghai Nationalities University (004000514315503).
摘要:
现阶段用于建筑围护结构的相变构件在蓄热阶段存在蓄热速率较低的问题。为了提高相变构件在蓄热过程中的蓄热速率,将相变构件与机械通风相结合,搭建了相变构件热性能研究实验台,测试了不同送风温度和送风风速工况下相变构件的蓄热性能,采用了有限差分法通过Matlab软件对相变构件蓄热过程进行数值计算以拓展实验送风温度工况,将风机能耗考虑在内,对系统整体的节能效果进行了分析,提出了有效的送风方法。结果表明:提高送风温度或风速可缩短构件相变完成时间,同时可以提高构件表面蓄热热流,当送风风速为1.0 m·s-1,送风温度由34℃提高到80℃时,液化过程的平均热流由23 W提高到322 W;同一送风风速工况下,最佳送风时间最终稳定在固定值;在送风温度80℃,送风风速2.0 m·s-1条件下,送风1.6 h时,系统能达到最大节能量,为891.8 kJ。
中图分类号:
谢静超, 汤逸羚, 张召锋, 王未, 刘加平, 王建平. 通风与相变耦合条件下围护结构最佳蓄热性能[J]. 化工学报, 2017, 68(7): 2684-2695.
XIE Jingchao, TANG Yiling, ZHANG Zhaofeng, WANG Wei, LIU Jiaping, WANG Jianping. Optimum heat storage performance of building envelope under coupling condition of ventilation and phase change[J]. CIESC Journal, 2017, 68(7): 2684-2695.
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