4/6/2024 0 Comments Chiller pump diagramWith today’s building automation system processing power and standard control devices, control techniques can be employed to automatically detect and compensate when a system starts to move outside the window of efficient operation.Ī major issue that can be experienced with a VPFCHW system is the proper balance of flow through the plant and chillers. As the size of a plant and amount of equipment increases, it is very difficult to design out the negative system effects for both steady state and transient flow conditions. Maybe due to habits of the past or simplification of system setup, these systems are often commissioned and evaluated at the full load design and steady state conditions.Īs efficient as VPFCHW systems are when operating, system design and variations in cooling loads around the distribution system can have negative effects. Since the cooling load is coupled with the chilled water distribution flow rate, in turn so is the chiller loading capacity. VPFCHW systems achieve great efficiencies through matching chiller capacity with the cooling load.
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