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Titlebook: Control Systems for Heating, Ventilating and Air Conditioning; Roger W. Haines Book 1987 Van Nostrand Reinhold 1987 Direct Digital Control

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Flow Control Devices,as mixing boxes and induction units, but the control dampers in air ducts and plenums are almost invariably the “multi-leaf” type. Two arrangements are available: parallel-blade and opposed-blade. As Figure 5-1 shows, in parallel-blade operation all the blades move in the same (or parallel) way. In
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Electric Control Systems,ers, pumps and accessories. And, all too often, he feels that these things are the responsibility of the electrical engineer. So, having graciously informed said electrical engineer of the location and size of these motors, the system designer goes away satisfied that he has done his part.
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Special Control Systems,he majority of the work being currently designed, and necessarily, since most air conditioning systems can be adequately controlled without frills. The basic schemes discussed can be applied in many combinations to solve the great majority of control problems.
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