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28-02-2013, 07:51 PM #1
Veteran Poster
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Re: Pumping Liquid Refrigerant- what will work?
As one step its either a piston or a diaphragm pump. Either one would want a centrifugal upstream as an NPSH boost unless your system arrangement has considerable head and subcooling available. A diaphragm is more like wear and erosion resistant and a lot simpler to make chemically compatible.
Both are going to pulsate; though a hydraulic accumulator would tend to take it out.
Only smooth flowing piece would be a side channel or regenerative multi-stage. Both are going to be highly critical to NPSH.
18 GPM at 510 Psi is going to be at least a 15-Hp pump. None of them are going to be cheap.
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20-03-2013, 09:00 PM #2
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Hey, I am new to : RE
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Re: Pumping Liquid Refrigerant- what will work?
Try calling Hansen Technologies. On their website (hantech.com) they had a hermetic liquid refrigerant pump that can go up to 600 psig. Also, I read about Viking pumps above. Viking makes a very good pump and if you need another option check Tuthill....a competitor to Viking.
Check out www-heat-pump-pro.com for great heat pump information!
