EcoRenovator - View Single Post - Selecting a solar water pump - new circulating pump technologies for solar hot water?

Daox · 10-05-12, 03:04 PM

I ran through the same calculations as Gary did a couple posts ago. I made a spreadsheet to compare the flow rates and different heads of pressure they create.

Looking through the available pumps I've come across a few that would work.

grundfos up15-100f 5.3gpm @ 1.1A (135W)
taco 009 gives me 6gpm @ 1.4A (161W)
grundfos ups26-99FC (speed #2) gives 7.5 gpm @ 1.5A (179W)

I'm still trying to dig through all the possibilities. However, I am leaning toward the UPS26-99FC at this point. Unless the power consumption ratings are way off, its very comparable pump wise to the UP26-64F, but the UP26-64F pulls 1.7A vs the 1.5A on the UPS26-99FC.

One thing I am thinking would probably be nice to have integrated into the pump is a check valve to prevent circulation when the pump is off. Its a relatively cheap option to add to the pump, and its one less thing I have to find fittings for and install.

10-05-12, 03:04 PM	#23
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,525 Thanks: 1,162 Thanked 374 Times in 305 Posts	I ran through the same calculations as Gary did a couple posts ago. I made a spreadsheet to compare the flow rates and different heads of pressure they create. Looking through the available pumps I've come across a few that would work. grundfos up15-100f 5.3gpm @ 1.1A (135W) taco 009 gives me 6gpm @ 1.4A (161W) grundfos ups26-99FC (speed #2) gives 7.5 gpm @ 1.5A (179W) I'm still trying to dig through all the possibilities. However, I am leaning toward the UPS26-99FC at this point. Unless the power consumption ratings are way off, its very comparable pump wise to the UP26-64F, but the UP26-64F pulls 1.7A vs the 1.5A on the UPS26-99FC. One thing I am thinking would probably be nice to have integrated into the pump is a check valve to prevent circulation when the pump is off. Its a relatively cheap option to add to the pump, and its one less thing I have to find fittings for and install. Attached Images __________________ Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.