heat - moves from areas of hot to cold, Sublimation - the process in which a solid turns to gas and therefore 'skipping' the liquid state, BTU - calculated by raising/lowering 1 pound of water 1 degree Fahrenheit, boiling point - By increasing the atmospheric pressure on a liquid the _____ is higher then regular, air velocity - is very important in sizing your duct-work and determining how much sound your fan will make when it pushes the heat through the ducts.,

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