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Furnace is a heat exchange system. On the one hand it to input a lot of heat, for example, fuel combustion heat release, products, kiln car, air into the sensible heat and so on, on the other hand, it also heat output, namely the heat consumption, for example, products of physical and chemical reaction heat, kiln, kiln wall top heat, waste gas sensible heat sensible the heat, the kiln car, products with out etc.. According to the law of conservation of energy, the kiln system, the heat input and output should be of the same heat, that is to say, heat income and expenditure balance of heat. This balance, we call heat balance.
Heat balance calculation is more complex, and as a result of the introduction of a number of empirical data, thus the results are not accurate enough. However, through the heat balance calculation can not only understand the fuel per hour for consumption, but also can observe the working system, the whole kiln various structure is reasonable, where heat consumption of the largest, can be improved? Etc.. Therefore, in the furnace design and heat measurement, it is necessary to make a heat balance calculation.
The calculation includes two types of heat balance. 1, preheating, burning with heat balance calculation, calculation of 2, total heat balance.