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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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發(fā)表于 2025-3-21 17:48:03 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
書目名稱Control Systems for Heating, Ventilating and Air Conditioning
編輯Roger W. Haines
視頻videohttp://file.papertrans.cn/238/237279/237279.mp4
圖書封面Titlebook: Control Systems for Heating, Ventilating and Air Conditioning;  Roger W. Haines Book 1987 Van Nostrand Reinhold 1987 Direct Digital Control
描述There are two reasons why we have a new edition every four or five years. The first is that technology changes. Chapter 10, on computer-based con- trols, has had to be almost completely rewritten. Fundamentals don‘t change, but the tools available to us do change. Evaluation and proper use of those tools makes it even more imperative that we understand fundamentals. Many of our control problems stem from the use of new devices as a solution to problems that are, in fact, control design errors. New gadgets, for example, Direct Digital Controls (DDC), will not solve basic problems and may even compound them. None-the-Iess, you will find an extensive discussion of DDC because I think it is the probable "future" in HVAC control. But it must be applied with a good understanding of fundamentals. The second reason is that I keep learning and need to pass on my new and improved understanding to my readers. Thus you will find a number of small but important revisions, a dissertation on control "modes," and a much more detailed discussion of how electronic control devices work. There are a few places where I have corrected what I now perceive to be errors. I apologize for these. I have been
出版日期Book 1987
關(guān)鍵詞Direct Digital Control; HVAC; Radiator; air conditioning; chiller; control; control design; control system;
版次1
doihttps://doi.org/10.1007/978-1-4684-6593-8
isbn_softcover978-1-4684-6595-2
isbn_ebook978-1-4684-6593-8
copyrightVan Nostrand Reinhold 1987
The information of publication is updating

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沙發(fā)
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板凳
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Elementary Control Systems,rworked here, applying as it does to both “control systems” and “HVAC systems.” The difference is always clear in context.) This chapter will consider only small segments of the larger overall systems. Each of these is a complete control system within itself, and all large systems are made up of complexes of these elementary systems.
地板
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https://doi.org/10.1007/978-3-642-99758-7uld develop a philosophy of design which will enable you to cope not only with the basic systems discussed here, but with the unusual and special requirements which continue to arise as air conditioning becomes more sophisticated.
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發(fā)表于 2025-3-22 18:13:53 | 只看該作者
https://doi.org/10.1007/978-3-642-99881-2 systems using duct air supply pressures are essentially fluidic in nature. Although they use lower pressures than pneumatic devices, more air is consumed, so fluidic systems do require more power to operate.
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,M?ngelrechte vor Abnahme (§?4 VOB/B),rworked here, applying as it does to both “control systems” and “HVAC systems.” The difference is always clear in context.) This chapter will consider only small segments of the larger overall systems. Each of these is a complete control system within itself, and all large systems are made up of complexes of these elementary systems.
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發(fā)表于 2025-3-23 02:17:05 | 只看該作者
Verwaltungsreform im politischen System only one or two elements while 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 became too small.
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發(fā)表于 2025-3-23 07:15:16 | 只看該作者
Book 1987ls, has had to be almost completely rewritten. Fundamentals don‘t change, but the tools available to us do change. Evaluation and proper use of those tools makes it even more imperative that we understand fundamentals. Many of our control problems stem from the use of new devices as a solution to pr
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