In order to investigate the feasibility of non-equilibrium thermal insulation in high-rise residential buildings in Henan,the solar energy characteristics of Henan are researched and analyzed. The most of the local conditions meet the non-equilibrium thermal insulation design requirement by Thermal Design Code for Civil Buildings (GB 50176-2016) . The effective heat transfer coefficients of each direction of the external walls of the high-rise residential buildings are calculated based on non-equilibrium theories and the relevant norms and literatures,taking Zhengzhou city as an example. The limit value of the heat transfer coefficient of the external wall in each direction of the building is calculated and the optimized design of the external wall is carried out with the limit value. The No.4 Building of East Zone of Huida New Territory of Zhengzhou City is researched. The differences in energy consumption,indoor temperature and consumable quantity of this building under original,balanced and unbalanced insulation are studied comparatively simulated,and the optimal thickness of roof insulation is determined based on the above results. The results show that after unbalanced thermal insulation is carried out on the building,its room temperature increases in the whole year range,in which the increase of room temperature in the heating period is more obvious as 2.10～3.30 ℃,and only 0.30～0.50 ℃ in the cooling period,and after unbalanced thermal insulation is carried out on the building,the equalization of the indoor temperature of the building in the whole year is improved than that of the original and when balanced thermal insulation is used. In terms of energy saving,non-balanced insulation can achieve the same energy saving effect as balanced insulation with more saving of insulation materials. There is no significant difference in the optimal thickness of the roof insulation layer between the two insulation structures,which is calculated to be 60 mm of extruded polystyrene board.
non-equilibrium insulationhigh-rise residentialenergy saving optimizationsolar energy
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