Industrial central chiller facility upgrade for greater system capacity and tighter process control - unique primary/secondary chilled water distribution cuts pumping power in half
- Lizardos Engineering Associates, Albertson, NY (United States)
An existing 3,000 Ton single-stage central chilled water system at a Wyeth-Ayerst pharmaceuticals plant could not balance and deliver required chilled water flow rates in an energy efficient manner, especially so considering planned expansions in manufacturing operations. A modernization design, consisting of a two-stage primary and secondary pump design, and a chilled water distribution and pressure equalization header resulted in an expandable, energy-efficient chilled water system for existing and expanded manufacturing processes and building air conditioning. A constant-flow primary pump-chiller loop, independently interfaced to a variable-flow secondary pump supply loop provides energy-efficient constant-flow control of chiller operations, while providing an effective chilled water supply to meet varying building A/C and manufacturing process cooling demands. It achieves both energy efficiency and tighter process control. Additionally, the introduction of a chilled water distribution and pressure equalization header provides for efficient, economical expansion for additional site constructions and expanded manufacturing processes. The solution reduces total water flow demands by 2,500 GPM. As a result of this lower GPM pumping as well as energy efficient equipment operation, the system modification reduces peak energy usage by 1,400 kWH.
- OSTI ID:
- 390874
- Report Number(s):
- CONF-960688--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Industrial central chiller facility upgrade for greater system capacity and tighter process control
Design issues of variable chilled-water flow through chillers