建筑节能中热力学方法的分析应用

摘要

建筑的采暖制冷需求是典型的低㶲能源需求，㶲分析方法是一种对能源系统进行热力学分析非常有效的方法，特别适用于低㶲能源系统。通过对供热工况下建筑各子系统的㶲消耗分析，计算得到它们的㶲量消耗变化规律，得出在节能设计中应优先考虑采用提高围护结构热工性能等被动式节能方法的结论。%The requirements of heating and cooling in buildings are typically low exergy requirements. Exergy analysis method is a effective thermodynamic method for energy system, especially for low exergy energy system. Exergy consumptions of the building subsystems are analyzed in heating condition, and the consumption rules of their exergy value are calculated. The conclusion is made that enhancing thermal performance of building envelop should be the prior consideration.