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Recent content by ThermalDude

  1. ThermalDude

    Specific Heat calculations

    Upon further thinking, I suspect what is really wrong with this equation is the value used for Cp. Cp SHOULD have units of BTUs/LBm-F, but really when we say Cp of water is 1 BTU/lb-F, we really mean 1 BTU per pound force per degree F. Do you think this is true?
  2. ThermalDude

    Specific Heat calculations

    Are Slugs and pounds-mass not synonymous? I believe they are. What is wrong with the equation as written using the Cp of water and assuming we are on earth? (I need to keep it in the imperial unit system.) Q = lbf/32.2 * 1 BTU/lbm-F * Delta T I think this is correct.
  3. ThermalDude

    Specific Heat calculations

    I see people caculating heat Quantity transferred as Q=Mass * Cp * delta T. All is good with this. But... But they use weight in lieu of mass when they calculate. In imperial units Cp of water is 1 BTU/lb-F. Isn't tis really lbm (pounds mass)? They really do as follows: Q = lbf * 1 BTU/lbm-f *...

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