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分别给出了烟气在管槽内强迫流动时的换热和空气横向绕流管束时的换热计算方法,确定了管内外换热的大小和强弱,并指出管外换热强度必须大于或等于管内换热强度。同时,检验已定参数的合理性,为下一步进行换热器的系列设计计算提供依据。
The calculation methods of heat transfer when the flue gas is forcibly flowed in the trough and the air flow around the tube bundle are given respectively. The size and strength of heat exchange inside and outside the pipe are determined. It is pointed out that the heat transfer intensity outside the pipe must be greater than Or equal to the heat exchanger tube strength. At the same time, testing the reasonableness of the established parameters provides the basis for the next series of heat exchanger design calculations.