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  1. oldtugs

    Power required to raise air temperature

    Thanks for the update. In this case the velocity change is virtually nil so I didn't mention it.
  2. oldtugs

    Power required to raise air temperature

    Thanks, that is much closer to what I was expecting. I don't need a 100F rise (closer to 70) but was padding it by a fair amount. I really appreciate the feedback, thank you.
  3. oldtugs

    Power required to raise air temperature

    The diameter doesn't matter, the flow rate, temperature, and volume of the mass to be heated have been supplied. The heat will not be applied externally so the wall to gas transfer is immaterial. The question is how much power will it take to raise the temperature of 500lb/min of dry air at...
  4. oldtugs

    Power required to raise air temperature

    thread391-260422 Starting with 500lb/min of dry air at 400F moving through a pipe at 84fps (appr. 11,000ACFM) what is the wattage required to raise the temperature 100F? CP 1.026 Density .046 lb/ft3 It's a real life problem, not homework so any help will be much appreciated.

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