模卡砌块组合保温墙体热工性能及其经济性分析  

Thermal property and economic analysis of theMoka blocks composite insulation wall

作　　者：苏波[1] 于晓雪 蔡青峰 王云轩 范旭红[1] SU Bo;YU Xiaoxue;CAI Qingfeng;WANG Yunxuan;FAN Xuhong(Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学土木工程与力学学院,镇江212013

出　　处：《江苏科技大学学报（自然科学版）》2024年第2期80-86,共7页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：“十二五”国家科技支撑计划项目(2015BAL02B02);镇江市建筑节能与绿色建筑专项引导资金(zk20220001);江苏大学青年扶持基金资助项目(5621480001)。

摘　　要：随着超低能耗建筑、近零能耗及零能耗建筑的发展,新型外墙围护结构引起广泛地研究和重视.模卡砌块作为一种新型外墙自保温技术,开始在上海、江苏等国内一些发达地区被试点和应用,但目前暂无相应规范指导,其热工性能及经济性仍缺乏系统性研究.文中以夏热冬冷地区某公共建筑为例,采用DeST能耗模拟软件,建立了传统外保温墙体、模卡砌块组合保温墙体三维分析模型,研究了膨胀聚苯板、岩棉板、聚氨酯板、挤塑聚苯板4种不同类型保温材料及6种不同厚度(30、50、70、90、110、130 mm)下模卡砌块组合保温墙体的热工性能.进一步,采用净现值法,对不同工况下的砌块组合保温墙体进行了经济性分析.研究表明:在相同外墙保温厚度下,聚氨酯板的保温效果最佳;不同保温材料厚度对应的净现值都呈现出先上升后下降的趋势,结合净现值和节能率,其最优厚度分别为70、70、40、60 mm,对应的节能率分别在达到我国建筑节能65%的标准上再降低7.08%、6.81%、5.1%、6.5%.With the development of ultra-low energy consumption buildings,near zero energy consumption buildings,and zero energy consumption buildings,new exterior wall enclosure structures have been widely studied and valued.As a new type of self-insulation wall technology,Moka blocks have been piloted and applied in some developed areas in China,such as Shanghai and Jiangsu.But there is no corresponding standard at present,and its thermal property and economy are still in lack of systematic research.This paper takes a public building in a hot summer and cold winter area as an example,and uses DeST energy consumption simulation software to establish a three-dimensional analysis model of traditional external insulation walls and Moka blocks composite insulation walls.The thermal property under four different types of insulation materials in the blocks,including expanded polystyrene board(EPS),rock wool board(RW),polyurethane board(PU)and extruded polystyrene board(XPS),and six different thicknesses(30,50,70,90,110,130 mm)are studied.Furthermore,the economic analysis of the blocks composite insulation wall under different working conditions is carried out by using net present value.The results show that the insulation effect of polyurethane board is the best under the same insulation thickness.The net present value corresponding to the thickness of different insulation materials shows a trend of first increasing and then decreasing.Combined with the net present value and energy efficiency,the optimal thicknesses is 70,70,40,and 60 mm,respectively.The corresponding energy saving rates are further reduced by 7.08%,6.81%,5.1%,and 6.5%in addition to reaching the 65%standard of building energy efficiency in China.

关 键 词：外墙保温 墙体构造 DEST软件 最优厚度 净现值 

分 类 号：TU55[建筑科学—建筑技术科学]