1.School of Architecture and Design,Harbin Institute of Technology,Harbin 150001,China.
2.Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology,Ministry of Industry and Information Technology,Harbin 150006,China.
3.Heilongjiang Province Academy of Cold Area Building Research,Harbin 150080,China
4.COFCO Technology & Industry Co. ,Ltd. ,Wuxi 214035,China
Composite ice shell buildings are short-term structures with internal spaces constructed mainly from composite ice materials, which play an important role in ice-snow tourism seasons in cold and frigid regions worldwide. As a key component of the envelope structure of composite ice shell buildings, the photothermal transport process of composite ice affects the indoor thermal environment as well as human thermal sensation and thermal comfort evaluation. To this end, this study designed and built an experimental chamber with composite ice structure as wall envelope, and explored the dynamic photothermal coupling transport characteristics of composite ice structure under actual outdoor conditions via field tests. Based on the understanding of the fundamental photothermal transfer patterns, a computational model for simulating photothermal transfer within the composite ice structure was further developed and verified by comparison with experimental data. The results show that the model can effectively predict the dynamic temperature changes at different positions of the composite ice structure, with an average root mean square error of 0.86 °C and an average absolute error of 0.74 °C.
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