Thermal performance and embodied energy analysis of a passive house – Case study of vault roof mud-house in India
Thermal performance and embodied energy analysis of a passive house – Case study of vault roof mud-house in India
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DOI：
10.1016/j.apenergy.2008.12.033
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发表时间：
2009-10
期刊：
影响因子：
11.2
通讯作者：
A. Chel;G. Tiwari
中科院分区：
文献类型：
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作者：
A. Chel;G. Tiwari
本文研究了位于印度新德里理工学院太阳能园区的现有环保低能耗拱顶被动式房屋（或泥屋）的热性能。根据具身能分析，确定泥屋的能源回收期为18年。rcc建筑单位建筑面积蕴含能（3702.3MJ/m2）相对于泥房（2298.8MJ/m2）相当高。泥屋有三个房间为倒u形屋顶，其余三个房间为圆顶屋顶。基于能量平衡方程，利用四阶龙格库塔数值方法求解了由6个相互连接的房间组成的住宅的热模型。预测的6个房间的空气温度与实验观测的每一个月每小时一年的数据吻合良好。在新德里复合气候条件下，泥屋的年采暖和制冷节能潜力分别为1481 kWh/年和1813kWh/年。由于供暖和制冷节能潜力而减少的二氧化碳排放总量确定为5.2公吨/年。泥屋的年碳信用潜力确定为52欧元/年。在印度不同的气候位置也得到了类似的结果。
This paper investigates thermal performance of an existing eco-friendly and low embodied energy vault roof passive house (or mud-house) located at Solar Energy Park of IIT Delhi, New Delhi (India). Based on embodied energy analysis, the energy payback time for the mud-house was determined as 18 years. The embodied energy per unit floor area of R.C.C. building (3702.3MJ/m2) is quiet high as compared to the mud-house (2298.8MJ/m2). The mud-house has three rooms with inverted U-shape roof and remaining three rooms with dome shape roof. A thermal model of the house consisting of six interconnected rooms was developed based on energy balance equations which were solved by using fourth order Runge Kutta numerical method. The predicted six room air temperatures were found in good agreement with the experimental observed data on hourly basis in each month for one year. The annual heating and cooling energy saving potential of the mud-house was determined as 1481 kWh/year and 1813kWh/year respectively for New Delhi composite climate. The total mitigation of CO2emissions due to both heating and cooling energy saving potential was determined as 5.2 metric tons/year. The annual carbon credit potential of mud-house was determined as € 52/year. Similar results were obtained for the different climatic locations in India.