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现行 NO-94-24-3
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Distributed Pumping for Chilled- and Hot-Water Systems 冷水和热水系统的分布式泵送
分布式泵送在区域或建筑物之间的分布摩擦差异很大的系统中具有很大的优势。示意图中给出的示例包括一个机场,该机场取消了二次泵,并安装了50 hp至200 hp的建筑电机,以替代二次泵;以及一个地区大学校园,通过将二次泵更换为建筑泵,实现了整体泵送需求的大幅降低。分布式泵送无需建造跨接桥、回流温度控制阀,在许多情况下,还无需在加热或冷却盘管上安装平衡阀。 据说,这些系统的整体效率远远高于使用一次/二次/三次系统的系统,或所有盘管上带有压力控制阀、跨接桥或平衡阀的系统。关键词:水泵、水泵、控制器、冷冻水供应、热水供应、计算、机场、大学、水流、冷却、加热。引用:研讨会,ASHRAE Trans。1994年,第100卷,第一部分
Distributed pumping offers a great advantage on systems where there is a great difference in distribution friction between zones or buildings. Examples given schematically are an airport, in which secondary pumps were eliminated and building motors from 50 hp to 200 hp were installed in lieu of secondary pumps, and a regional college campus, in which a sizeable reduction in overall pumping requirements was achieved by replacing the secondary pumps with building pumps. Distributed pumping eliminates building crossover bridges, return temperature control valves, and in many cases, the need for balance valves on the heating or cooling coils. The overall efficiency of these systems is said to be far above those utilising primary/secondary/tertiary systems, or systems with pressure control valves, crossover bridges or balanced valves on all coils.KEYWORDS: water pumps, pumps, controls, chilled water supply, hot water supply, calculating, airports, universities, water flow, cooling, heating.
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