Titlebook: Control Systems for Heating, Ventilating, and Air Conditioning; Roger W. Haines (Consultant),Douglas C. Hittle (Di Book 1993 Springer Scie

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Electric Control Systems,Control of HVAC systems includes starting and stopping electric motors for fans, compressors, boilers, pumps, and accessories. All too often the system designer thinks that motor control is the responsibility of the electrical engineer.

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Special Control,The control systems discussed up to this point might be considered conventional. They are intended to provide adequate occupant comfort and reasonable efficiency. In some applications, however, very precise control of temperature and/or humidity is required. This chapter will discuss some of these control challenges in detail.

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he operating principles and applications of all the basicdevices and subsystems used in HVAC control. The new Fifth Edition,completely revised by Douglas Hittle, takes into account the manytechnological changes that have arisen since then. Crystal-clearguidelines on combining control devices, circui

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https://doi.org/10.1007/978-3-658-00692-1ilosophy of design that will enable you to cope not only with the basic systems discussed here, but with the unusual and special requirements that continue to arise as air conditioning becomes more sophisticated.

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https://doi.org/10.1007/978-3-658-00814-7available: parallel-blade and opposed-blade. As Figure5-1 shows, in parallel-blade operation all the blades move in the same (or a parallel) way. In opposed-blade operation adjacent blades move in opposite directions.

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https://doi.org/10.1007/978-3-658-00937-3may have only one or two elements, whereas others may contain a dozen or more chillers and boilers. Some large plants, which have grown over a period of years as a campus developed, have been spread out in two or three locations as the originally assigned spaces have become too small.

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Flow Control Devices,available: parallel-blade and opposed-blade. As Figure5-1 shows, in parallel-blade operation all the blades move in the same (or a parallel) way. In opposed-blade operation adjacent blades move in opposite directions.

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