Primary-Secondary chilled water system
Primary-Secondary chilled water system
(OP)
Hi experts,
HVAC related books say, in a primary-secondary chilled water system, the flow is controlled by the 2-way valve in the coil return side and the pressure in the supply pipe shoots up which is sensed by the dpt and dpt signals the secondary pump vfd to reduce pump speed.
If this is right what parameter controls the 2 way valve? How does it open and close automatically?
Thanks in advance?
HVAC related books say, in a primary-secondary chilled water system, the flow is controlled by the 2-way valve in the coil return side and the pressure in the supply pipe shoots up which is sensed by the dpt and dpt signals the secondary pump vfd to reduce pump speed.
If this is right what parameter controls the 2 way valve? How does it open and close automatically?
Thanks in advance?





RE: Primary-Secondary chilled water system
You should do some more search of Bell and Gosset as this is is a forum and not a fluids class
http://bellgossett.com/training-education/training...
RE: Primary-Secondary chilled water system
RE: Primary-Secondary chilled water system
Best to you,
Goober Dave
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RE: Primary-Secondary chilled water system
RE: Primary-Secondary chilled water system
The variable that controls the two-way valve is room air temperature. Room thermostat then calls for open valve or close valve, to let water enter the coil.
RE: Primary-Secondary chilled water system
RE: Primary-Secondary chilled water system
Best to you,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies