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济南普通壁挂炉供暖热现状分析
2014-11-4 10:52:21

普通壁挂炉是人们对采用普通燃烧技术的壁挂炉的通称。这种壁挂炉是在比例调节燃烧器(燃气量可调、进风量不可调)的作用下进行工作的。普通壁挂炉的弊端就是由于燃气和空气无法时时达到完全燃烧的混合比,空气系数在壁挂炉的部分热负荷状况下偏高。
Ordinary people on ordinary boiler combustion boiler technology known. This boiler is in proportion to adjust the burner (gas volume adjustable, intake air volume is not adjustable) the role of work in the next. Ordinary boiler drawbacks is due to the gas and air can not always achieve complete combustion of the mixture ratio, air ratio at part load conditions heat boiler high.

普通壁挂炉在这种工作状况下,烟气带走的热量损失偏大,污染排放物指标较高,热效率在部分热负荷状况下偏低。据了解,国产的普通壁挂炉产品通常在满负荷的情况下,热效率约为90%;在负荷较小的情况下,热效率在约为85%。因此出现了热效率更高的冷凝式壁挂炉,冷凝式壁挂炉是使用目前世界上先进的冷凝技术,即将烟气中的余热回收利用,其燃烧方式为全预混的比例调节。
In this work the general situation boiler flue gas heat away loss is too large, high polluting emissions targets, the thermal efficiency is low in the lower part of the heat load conditions. It is understood that domestic products are usually ordinary boiler at full load conditions, the thermal efficiency of about 90%; when the load is small, the thermal efficiency of about 85%. Resulting in a higher thermal efficiency condensing boiler, condensing boiler is condensed using current advanced technology in the world, is about the flue gas heat recovery, which is the proportion of premix combustion mode of regulation.

另外,冷凝壁挂炉的排烟温度最低可降到40℃左右,烟气中水蒸气潜热基本被充分吸收和利用,故此热效率可大于100%,最高可达109%。但由于冷凝壁挂炉价格昂贵,目前,国内壁挂炉用户大多采用的还是普通壁挂炉。
In addition, the condensing boiler flue gas temperature can be reduced to a minimum of about 40 ℃, the latent heat of water vapor in the flue gas is substantially fully absorbed and utilized, therefore the thermal efficiency can be greater than 100% up to 109%. However, due to the condensing boiler is expensive, at present, the domestic boiler users are mostly employed or ordinary fireplace.

 

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