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  • Users: mdefense
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  1. mdefense

    Heat Loss - Interior Wall Temperature after time

    I am trying to calculate the interior wall temperature of an insulated tank. I want to model the as a plane wall for simplicity. Knowns: ambient (outside temp) -25F, thickness 3", thermal conductivity .04 W/mK, area 13.72m^2. Any suggestions?
  2. mdefense

    Tank draining flow rates with opening different valves?

    This question is a little different than previous questions that I've seen regarding tank draining problems. I have an 800 gal. tank, with a wetted height of 28". Attached to the main 2" exit pipe of the tank are 6 spigots/valves each with a diameter of 3/4". Solving for the flow rate for one of...
  3. mdefense

    NSF 61 Certified Flange?

    Working on a project that has to be nsf 61 certified for potable water contact, but cannot find a flange the connects to a butterfly valve. The valve we are proposing to use is a 2" nominal ANSI class 150 inlet/outlet. Any suggestions?

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