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  1. redtrees

    open door heat loss

    By assuming a velocity of air over the door you could use :- Q=M.C.delta_T Where Q = the heat loss in kw M = the mass flow rate of air in kg/s delta T = the temp difference. If you assumed that the internal building temp is 20 deg.C and it is 10 deg.C outside, and at worst case cold air is...

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