High efficiency pump
High efficiency pump
(OP)
I need to pump 3-6 gpm of 50/50 glycol and water at 15-20 psig for heat tracing production lines. There is no electrical power, so I'm trying to do it with a 24 V solar system and as such efficiency is a primary concern. I inherited a pilot test with solar pannels, batteries, inverter, AC motor and centrifugal pump but it is woefully inefficient--batteries to hydraulic hp runs about 3.2%. I plan to eliminate the inverter, go with a brushless DC motor/controller and a gear pump. By my calcs this raises the efficiency to about 30% with most of the gain due to the pump. Is there another type pump I should be considering? I've heard from one vender that claim they make a pump with around 85% efficiency but they wanted $8k for it and for that cost, I'd rather buy more panels and batteries.





RE: High efficiency pump
RE: High efficiency pump
RE: High efficiency pump
RE: High efficiency pump
RE: High efficiency pump
http://www.plumbingsupply.com/pondstff.html
Has a couple that have shut-off (no flow) heads that scratch your water head range (30 ft), running them at > 0 flow will give you somewhat lower head/pressure output. Eff's not given. You might even have to change the motor and speed if you're using DC, but you should be able to find something and make it work for US$200-300, even with a motor changeout. Not thousands.
RE: High efficiency pump
Naresuan University
Phitsanulok
Thailand
RE: High efficiency pump