河南农村建筑能效提升改造
Energy efficiency improvement and renovation of rural buildings in Henan
摘要：
为了解目前河南省农村建筑的节能发展现状,对河南省农村现有建筑围护结构的热工性能进行了调研和总结。结果表明,既有农村建筑的墙体、屋面和门窗等的热工性能整体较差,导致供暖和制冷能耗很大。选取典型河南省农村建筑进行了围护结构改造设计,利用PKPM软件对改造前后的建筑能效提升率和经济性进行了计算和对比,分析得出可依据屋面、外墙、外门窗的优先顺序来确定既有农村建筑能效提升路线。其中:对屋面进行改造,其能效提升率相对较高、成本较低,保温层厚度可选取大于50 mm;对外墙进行改造,保温层厚度可选取大于40 mm,当有多面外墙需要改造时,优先改造北面墙。该改造方案可为既有农村建筑的节能改造提供参考,达到节能的目的。
Abstract：
To understand the current status of energy saving development of rural buildings in Henan Province, the thermal performance of existing rural building envelopes in Henan Province is investigated and summarized. The results show that the overall thermal performance of the walls, roofs, doors and windows of existing rural buildings is poor, resulting in a large energy consumption for heating and cooling. The typical rural buildings in Henan Province are selected for the renovation design of the envelope structure. The PKPM software is used to calculate and compare the energy efficiency improvement rate and economy of the buildings before and after the renovation. It is concluded that the energy efficiency improvement route of the existing rural buildings could be determined according to the priority order of roof, exterior wall, exterior doors and windows. Among them, for the renovation of the roof, its energy efficiency improvement rate is relatively high, the cost is lower, and the thickness of the insulation layer can be more than 50 mm. For the renovation of the exterior wall, the thickness of the insulation layer can be more than 40 mm. When the multiple exterior walls need to be renovated, the north wall should be renovated first. The renovation scheme can provide a reference for the energy saving renovation of existing rural buildings to achieve the purpose of energy saving.
Keywords:rural building; energy consumption; energy efficiency improvement; renovation; thermal performance; energy saving