摘要
该文在热管置入式墙体稳态传热实验和动态传热模拟的基础上,于天津地区搭建实际环境下热管置入式墙体测试系统。该测试系统基于2个相同结构尺寸房间,在其中一间的南外墙上置入热管,测试期间用电暖器维持室内18℃。依据测试数据对实际环境下墙体的动态传热特性进行分析。结果表明,相比于普通墙体,热管置入式墙体的内表面温度提升率为3.4%,蓄热能力提高;热管置入式墙体平均延迟时间为11.12 h,比普通墙体滞后约0.50 h;热管置入式墙体平均衰减倍数为89.37,比普通墙体大;测试期间热管置入式墙体节能率为25.9%。
Based on the steady heat transfer experiments and dynamic heat transfer simulations of the wall implanted with heat pipes,a test system of the wall implanted with heat pipes is built in Tianjin area under actual environment. The test system is based on two identical structural dimensions rooms with heat pipes implanted in the south exterior wall of one of them,and the rooms are maintained at 18 ℃ with electric heater during the test period. The dynamic heat transfer characteristics of the wall in the actual environment are analyzed based on the test data. Compared to the ordinary wall,the results show that the wall implanted with heat pipes has a 3.4%increase in inner surface temperature and an increase in heat storage capacity. The average delay time of the wall implanted with heat pipes is 11.12 h,which is about 0.5 h behind the ordinary wall. The average attenuation multiple of the wall implanted with heat pipes is89.37,which is larger than that of the ordinary wall. The energy saving rate of the wall implanted with heat pipes is 25.9% during the test period.
作者
张志刚
苏珂
姚万祥
Zhang Zhigang;Su Ke;Yao Wanxiang(School of Energy and Safety Engineering,Tianjin Chengjian University,Tianjin 300384,China;State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China;Tianjin Key Laboratory of Civil Structure Protection and Reinforcement,Tianjin Chengjian University,Tianjin 300384,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2022年第10期1-6,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51508372)
天津市自然科学基金(17JCYBJC21400)
能源清洁利用国家重点实验室开放基金(ZJUCEU2020024)。
关键词
太阳能
热管
传热
延迟时间
衰减倍数
solar energy
heat pipes
heat transfer
delay time
attenuation multiple
