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  1. MWMillerPE

    thermal insulation calculations

    What specifically is the effect do you wish to minimize? Perhaps you mean... 1.Tube length changes due to temp change. 2.Condensation on the optics. To answer the question you asked, the insulation formula for conduction in air is Q=uA(T2-T1), where Q=rate of heat transfer in BTUH/Hr A=surface...

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