排风隔热窗一维简化传热模型研究

Simplified One-Dimensional Heat Transfer Model of the Exhaust Air Insulation Window

排风隔热窗作为一种新型外窗结构,可以有效地降低室内侧玻璃表面与室内空气之间的温差,减少外窗形成的室内负荷,改善室内的热舒适性。利用能量守恒原理,建立了排风隔热窗的一维简化传热数学模型,研究了该结构外窗在夏热冬冷气候条件下的传热特性。将排风隔热窗的简化传热数学模型和区域模型的计算结果进行比较,计算结果表明,简化模型可以较好地模拟排风隔热窗的传热特性,适用于研究初期的简化计算和工程计算。

The exhaust air insulation window can utilize the heat/cool of exhaust air from conditioned rooms to directly reduce the temperature difference between the interior surface of window and the indoor air, resulting in reduction of the cooling/heating load through window and improvement of indoor thermal comfort. A simplified heat transfer model is proposed for evaluating the thermal performance of window based on energy balance under the summer and cold winter weather conditions. To validate the simplified model, the simulation results are compared with the results of zonal model. Results show that the proposed simplified model has enough accuracy and is a relatively simple method for evaluating the thermal performance of the exhaust air insulation window.