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  1. Guylander

    What is the effect of motor loss on an air cooler?

    Thanks CJKruger - we've had some plant operators give us similar numbers - between 10%(min) and 30%(max), so 20% seems in line.
  2. Guylander

    What is the effect of motor loss on an air cooler?

    I figured we'd assume a constant process outlet T (valid for single component condenser under pressure control) and an outlet air temperature equal to the process outlet (probably not far off) to compute the duty for the natural draft case. But the above might not be needed - knowing the...
  3. Guylander

    What is the effect of motor loss on an air cooler?

    Thanks Speco - sounds like we can use the different flows (e.g. 300, 5000) and find the duty expressions for each to get a rough idea of the effect on Q.
  4. Guylander

    What is the effect of motor loss on an air cooler?

    We develop dynamic simulations, and need the opinion of someone with practical experience designing or operating air coolers. We need to know (ball-park) how much the duty of an air cooler is reduced when the fan power is lost, leaving only natural convection (e.g. Q/Qdesign = 0.5, or 0.25...

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