Thermodynamic investigation of building integrated energy efficiency for building retrofit
Thermodynamic investigation of building integrated energy efficiency for building retrofit
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建筑改造的建筑综合节能热力学研究
DOI：
10.1016/j.enbuild.2014.03.021
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发表时间：
2014-07
影响因子：
6.7
通讯作者：
Long Li
中科院分区：
文献类型：
--
作者：
Ping Wang;Guangcai Gong;Ying Wang;Long Li
本文提出了一种将建筑围护结构和冷热源的经济性与节能性相结合的建筑围护结构单位建筑面积火用成本热力计算模型，用于评价建筑综合节能。该模型建立在“负荷平衡”的基础上，并考虑了建筑物的生命周期。应用该模型对案例中的典型围护结构进行分析，确定最佳围护结构方案。以某办公楼为例，介绍了3种围护结构节能改造方案.对4种方案的单位建筑面积围护结构火用成本、能耗、火用耗和CO2排放量进行分析，确定改造方案的性能。结果表明，保温性能良好的建筑围护结构有助于减少制冷和供暖的能源需求。建筑围护结构节能改造方案在降低建筑能耗和CO2排放的同时，会增加建筑生命周期内的（火用）消耗。综合考虑建筑节能、（火用）效率、建筑围护结构单位建筑面积（火用）成本和CO2排放，提出了建筑围护结构节能改造的优化算法。
A thermodynamic calculation model, building envelope exergy cost of unit construction area, which combines the economic and energy efficiency of building envelope and cooling and heating resource, is proposed in the paper to evaluate the building integrated energy efficiency. The model is found on “counterbalance of load” and the building life cycle is also considered. The model is applied to analyze typical building envelopes of the case to decide which one is the best. An office building with 3 building envelope energy efficiency retrofit schemes is applied as the case. The building envelope exergy cost of unit construction area, energy consumption, exergy consumption and CO2emission of the 4 cases are all analyzed to determine the performance of the retrofit schemes. The results show that the building envelope with good insulation can help to reduce energy demand for cooling and heating. The building envelope energy efficiency retrofit schemes would reduce the building's energy consumption and CO2emission but it would increase its exergy consumption during its life-cycle. Taking energy efficiency, exergy efficiency, building envelope exergy cost of unit construction area and CO2emission into consideration, an optimization algorithm for the building envelope energy efficiency retrofit is brought forward.
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