基于ECOTECT兰州乡村民居被动式太阳房冬季室内热环境模拟研究及优化策略  

Simulation Study on the Indoor Thermal Environment in Winter of Passive Solar House in Rural Areas in Lanzhou Based on ECOTECT and Optimization Strategy

作　　者：吴永诚[1] 贺文涛 Wu Yongcheng;He Wentao(School of Design and Art,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学设计艺术学院,甘肃兰州730050

出　　处：《甘肃科学学报》2020年第4期56-63,共8页Journal of Gansu Sciences

基　　金：甘肃绿色科技攻关项目(JK2017-31)。

摘　　要：近几年被动式太阳能技术在乡村民居上的应用成为了我国乡村民居供暖技术研究的主流。被动式太阳房通过建筑物朝向和周围环境的合理布置,内部空间及外部形体的巧妙设计,建筑材料、结构的恰当选择等技术措施,在不消耗或少消耗一次能源的前提下,利用太阳热能解决建筑物采暖问题,因此具有环境污染少、能源消耗低、结构简单、造价较低的应用效果。研究基于ECOTECT数值模拟技术,以兰州地区气象、民居形式、村民生活习惯为条件,针对乡村集热蓄热墙式被动房的传热过程建立了集热蓄热墙传热过程数学模型,模拟了冬季室内热环境,并与传统砖混乡村民居冬季室内热环境进行了对比,得出集热蓄热墙一定程度上可以改善乡村农宅的室内热环境,但是还不足以满足人体热舒适的要求,即使在加设外保温的情况下,围护结构的失热量依然很高。针对分析结果,研究提出了通过改进围护墙体材料、增加集热面积、增加辅助热源的方法进一步改善乡村民居的室内热环境。In recent years,the application of passive solar on rural area has become the main trend of study on rural heating supply technology in China.Under the condition of consuming little or less primary energy source,the passive solar house uses solar energy to provide heat for the architecture,by means of the reasonable arrangement of building orientation and surroundings,clever design of interior space and exterior appearance,and appropriate choice of building materials and structure,in order to produce less pollution and low energy consumption,with simple structure and low cost.On condition of the climate,resident form,and habits and customs of villagers in Lanzhou,based on ECOTECT numerical simulation technique,this study established the mathematical model of heat transfer process of thermal storage walls in accordance with the same process of thermal storage walls in passive solar house in rural area,to simulate the indoor thermal environment in Winter and compare with the indoor thermal environment in Winter of traditional brick-concrete buildings in rural area.It showed that the thermal storage walls could improve the indoor thermal environment of architectures in rural area to some extent but still failed to meet the requirement of heat comfort of human body,even though the exterior heat preservation measures were taken,the heat loss of the building envelope was still very high.On the basis of the analysis results,it's proposed to improve the wall materials of the envelope,increase the thermal storage area,and add auxiliary heat resources so as to refine the indoor thermal environment in rural areas.

关 键 词：兰州乡村民居 集热蓄热墙 被动式太阳房 室内热环境 

分 类 号：TU111.45[建筑科学—建筑理论]