The easy way to keep your HVAC systems humming. Meet the demand for better quality and efficiency in air systems by mastering the latest TAB (testing, adjusting, and balancing) techniques in the Third Edition of HVAC Testing, Adjusting, and Balancing Manual, by John Gladstone and W. David Bevirt. This time-saving productivity tool puts at your fingertips proven TAB methodologies, equations, and calculations for system balancing, controls, clean rooms, sound vibration and more. It's the only resource you need to: balance air and water distribution systems; adjust the total system to provide specified quantities; perform accurate electrical measurements; establish quantitative performance of all equipment; verify automatic controls; measure sound and vibration with complete confidence; and much more.25.2.3 Duct surface The surface area of a round duct, which is a cylinder, is: Equation 25.13 Ap = LirD Where: Ap = area of perimeter (ft2 or m2) L = length of duct (ft or m) D = diameter (ft or m) 25.2.4 Sphere The volume for a sphere may beanbsp;...
|Title||:||HVAC Testing, Adjusting, and Balancing Field Manual|
|Author||:||John Gladstone, W. David Bevirt|
|Publisher||:||McGraw Hill Professional - 1996-12-01|