青藏高原太阳能综合利用的经济性及节能性分析

Analysis on Energy Consumption and Economic Performance of the Building Solar Utilization System on Qinghai-Tibet Plateau

以青藏高原的拉萨及格尔木作为典型代表城市,选择某商业建筑作为研究对象,首先对当地建筑的全年动态供暖及用电负荷进行计算、分析。基于热、电负荷特性,建立了建筑太阳能光电、光热综合利用物理模型,并提出基于节能性及经济性的综合评价模型。结果表明,基于青藏高原的气候特性,建筑屋面全部采用太阳能光伏系统,可获得最大的太阳能利用率,太阳能光电利用系统的经济性及节能性均优于光热利用系统。

A commercial building has been studied in two typical cities on Qinghai-Tibet plateau,Lhasa and Golmud.First,the annual dynamic heating and electricity load of the building was simulated and analyzed.Based on this,the comprehensive solar utilization model was established and the evaluation model based on energy consumption and economic performance was proposed.Result shows that the maximum solar energy utilization can be achieved when the whole roof was covered by PV panels.From the point of both energy consumption and economic performance,PV system is superior to PT system on Qinghai-Tibet plateau.