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空心砌块通风墙体是一种新型的建筑围护结构,该结构可以利用空调系统排风、地道风或夏季夜间凉风对空心砌块墙体的空腔进行通风,实现墙体内部冷、热量的转移。该技术将热回收或可再生能源利用与降低墙体内部冷/热量结合起来,可削弱室外气候对室内环境的影响,减小墙体内表面温度的波动,从而改善人体的热舒适性。为了研究该新型通风墙体的传热特性,建立了空心砌块通风墙体的二维简化传热模型。并且在稳态情形下,计算分析了该通风墙体内表面的平均温度。还进一步研究了空心砌块通风墙体的当量热阻及其影响因素。结果表明空心砌块通风墙体能获得较低的墙体内表面温度和较高的当量热阻,同时,也降低了室内负荷。
Hollow block ventilation wall is a new type of building envelope structure, which can use the air conditioning system exhaust, authentic wind or summer night breeze hollow block wall cavity ventilation, to achieve the interior wall of the cold, Heat transfer. The technology combines heat recovery or the use of renewable energy with reducing the internal cooling / heating capacity of the wall to reduce the impact of the outdoor climate on the indoor environment and reduce the temperature fluctuation on the internal surface of the wall to improve the thermal comfort of the human body. In order to study the heat transfer characteristics of the new ventilated wall, a two-dimensional simplified heat transfer model of hollow ventilated wall was established. And in the steady state, the average temperature of the inner surface of the ventilation wall is calculated and analyzed. The equivalent thermal resistance of hollow block ventilation wall and its influencing factors are further studied. The results show that hollow block ventilated wall can obtain lower wall surface temperature and higher equivalent thermal resistance, meanwhile, it also reduces indoor load.