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Thread: Liquid Pumps
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11-02-2008, 10:42 PM #1
Liquid Pumps
Hi
Visted a site today where they have fitted a invertor on the condenser fans ,lowered the head pressure and fitted a liquid pump.Just looking for views and information on liquid pumps.Are they good ??
Regards Bernard
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11-02-2008, 11:18 PM #2
Re: Liquid Pumps
Hi Bernard,
Any refrigerant pump should be acceptable as long as the pump application parameters are met and the pump is designed for refrigerant service. The system you are describing essentially sounds like a HySave system used in years past for supermarkets and other commercial applications.
Instead of running the system with higher discharge pressures to feed liquid refrigerant to the TXV's, the refrigerant pump simply provides the pressure to push the liquid to the TXV's. Rather straightforward, but...
Refrigerant pumps are notorious for cavitating if the inlet pressure is insufficient.If all else fails, ask for help.
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11-02-2008, 11:44 PM #3
Re: Liquid Pumps
Hi Bernard.the pumps are being used to get head pressures from 200psi to 100psi at night to try and cut down costs.they seem to be working ok as long as the receivers are about 3/4`s full.have`nt had too many problems yet onlystupid alarms when all fans cut out.
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11-02-2008, 11:52 PM #4
Re: Liquid Pumps
hysave website is very informative.RE wont let me give url.
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11-02-2008, 11:56 PM #5
Re: Liquid Pumps
It's impossible to make anything foolproof because fools are so ingenious...
Don't ever underestimate the power of stupid people when they are in large groups.
Please, don't teach me how to be stupid....
No job is as important as to jeopardize the safety of you or those that you work with.
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11-02-2008, 11:59 PM #6
Re: Liquid Pumps
Thanks Josip now thats 16
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