Primary-secondary pumping system

Details Primary-secondary pumping system Primary-secondary pumping system

2006-03-28

2006-03-28

Koczo, Jr., Michael (Department: 3746)

Fluid handling

Systems

Closed circulating system

C137S565300, C137S565330

Reexamination Certificate

active

07017606

ABSTRACT:
A primary-secondary pumping system for HVAC systems wherein the common pipe is configured so that there is at least a 4 ft pressure drop across the length of the common pipe and that all thermal plants see the same temperature of water entering the thermal plants and that return water sees the pressure drop of the common pipe before it sees the chilled (or heated) water leaving the thermal plant and the suction of the secondary pumps.

REFERENCES:
patent: 3825084 (1974-07-01), Fruth et al.
patent: 4495777 (1985-01-01), Babington

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