利用仿真程序研究了典型系统的效率和相对运行成本对以下参数的敏感性:系统循环率；过量空气、燃烧率以及烟道温度、非周期通风流量、通风控制空气流量和系统平衡温度的相关变化。在三种情况下，通过降低一般超大系统的燃烧率来节能:现有供暖系统和住宅的最佳燃烧率。对现有房屋进行改造的新炉子/锅炉，以及新房屋的新炉子/锅炉，其中炉子、管道和烟囱可以相互匹配。分析表明，如果通风控制空气流量可以与燃烧率同时减少，而不是单独减少喷嘴和燃烧空气流量，那么通过减少过剩产能可实现的节约可以达到两倍。 引文:研讨会，ASHRAE交易，第83卷，第一部分，伊利诺伊州芝加哥

A simulation program was used to investigate the sensitivity of efficiency and relative operating cost of typical systems to these parameters: system cycle rate; excess air, and firing rate and associated changes in flue temperature, off-period draft flow, draft control air flow and system balance temperature.Energy conservation by reducing the firing rate of generally oversized systems was studied for three situations:Optimum firing rate for an existing heating system and house.New furnace/boiler retrofitted to an existing house, andNew furnace/boiler for a new house, in which furnace, ducts and chimney canbe matched to each other.The analysis showed that savings achievable by reducing overcapacity can be twice as high if the draft control air flow can be reduced simultaneously with the firing rate, rather than reducing the nozzle and combustion air flow alone.