Induction fan operation
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A waste heat recovery system has just been installed for kerosene hydrogenation, and an exhaust fan has been put into use; however, the temperature of the exhaust gas produced is not high enough to allow direct discharge. The temperature difference is too large. Which expert knows the reason?
If the heat output of the heat source remains constant, and the amount of heat carried away by the air volume is also constant, then the temperature resulting from this should also be constant. If the amount of air is increased, the heat carried away should remain constant; however, an increase in the amount of cold air may result in a decrease in the outlet temperature. For reference.
Let’s keep going for a while and see; don’t rush to draw conclusions.
This post was last edited by altpage on 2020-6-5 09:55. You have started the exhaust fan – why are all the dampers in the direct exhaust duct of F-302 open? In this way, doesn’t the high-temperature flue gas all go straight out through the chimney? How can heat recovery be achieved in such a case? By gradually closing the damper on the direct exhaust flue, you will see the difference between the two temperatures gradually decrease until they become equal. The exhaust flue dampers cannot be closed completely, as this may cause them to get stuck; it is also necessary to check whether the exhaust flue dampers in F301 are fully open as well.
Actually, my first thought was that something wasn’t right here – with the flue dampers fully open, it should have created a negative pressure, so how could the smoke go in the direction of the exhaust fan? . . . . Basically, it all went through the chimney as a short circuit. In our local dialect, it’s called having poor breath flow, or getting a stitch: lol