Pressure drop consideration of control valves
- Flow Design, Inc., Dallas, TX (United States)
Control valves develop a pressure drop in order to restrict the flow of liquids in HVAC hydronic systems. Theoretically, the amount of this pressure drop can be rather large. However, for practical noise, erosion, and wear reasons, there should be limitations. This paper is related to the pressure recovery ability of control valves. The pressure recovery is dependent on the internal design of the valve and the system operating conditions. For example, the operation of an automatic flow-limiting valve (ASHRAE 1992) is discussed. This discussion is applicable to any valve that controls flow by means of restricting the flow passage area. Typically, these include automatic temperature control, manual balancing, and the automatic pressure-actuated flow-limiting valves.
- OSTI ID:
- 649486
- Report Number(s):
- CONF-980123-; TRN: IM9825%%99
- Resource Relation:
- Conference: 1998 ASHRAE winter meeting, San Francisco, CA (United States), 17-21 Jan 1998; Other Information: PBD: 1998; Related Information: Is Part Of ASHRAE transactions 1998. Volume 104, Part 1B: Symposium papers; PB: 1162 p.
- Country of Publication:
- United States
- Language:
- English
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