利用热水/蒸汽锅炉通用方程，对典型的热水冷凝锅炉（HWCB）进行了火用分析。与文献报道的结果有很好的相关性。论证了冷凝锅炉（火用）效率和能量效率之间的显著差异。同样的方法也用于估算蒸汽真空加热冷凝锅炉（VVHCB）组合的理论（火用）效率。对波士顿地区一座由冷凝锅炉加热的房屋进行的对比计算表明，VVHCB替代方案可能节省43.8%的能源/燃料。引文:ASHRAE交易——第120卷第2部分，华盛顿州西雅图

Exergetic analysis of a typical hot-water condensing boiler (HWCB) was carried out using the general equation for hot-water/steam boilers. Good correlation with results reported in the literature was found. Significant discrepancy between condensing boiler exergetic efficiency and energetic efficiency is demonstrated. The same method is applied to estimate theoretical exergetic efficiency of a proposed vapor vacuum heating and condensing boiler (VVHCB) combo. Comparative calculation for a Boston area house heated by a condensing boiler indicated potential savings of 43.8% energy/fuel for the VVHCB alternative.