Chapter hvac engineering Fundamentals: Part 1 Introduction


General Plant Design Concepts



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HVAC HANDBOOK

7.2
General Plant Design Concepts
Independent of the service being produced, some concerns are common
to central plants.
1.
Siting.
Central plants preferably are located in the middle of or
adjacent to the loads they serve. Distribution piping costs may loom
large if primary piping runs long distances to get to the service point.
On the other hand, the combining of multiple service units into one
plant is the act which achieves the economy of scale and the conven-
ience of operation, so distance is a tradeoff, but the central location is
still a favored point to start. For large plants serving congested cam-
puses, a remote or peripheral location may be preferred. This allows
better access to the plant and removes plant, traffic, noise, and emis-
sions from the more densely populated areas.
Source: HVAC Systems Design Handbook
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)
Copyright © 2004 The McGraw-Hill Companies. All rights reserved.
Any use is subject to the Terms of Use as given at the website.


192
Chapter Seven
For high-rise buildings, there is the question of the basement, roof,
or in between. On-grade locations have the best access. Sometimes
buildings are occupied from the ground up during extended construc-
tion, suggesting a low-level site. Where water systems are involved,
pressures may become very high at lower building levels. This is less
of a problem with chillers than with boilers. Systems with boilers often
take the equipment to the roof, partly for pressure considerations,
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