Can the waste heat recovery from the flue gas of a 250KW heat transfer oil furnace be achieved using hot air instead of hot water?
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As the title suggests, our company has a 250KW heat transfer oil furnace. The manufacturer says that to achieve an efficiency of 88%, it is necessary to install a flue gas waste heat recovery system using water for condensation; however, we do not want to use water and prefer to use hot air recovery instead. Is it possible to do this for a furnace of this size?
Sure, but the hot air burner is expensive