|
Advanced Search |
|
Thread Tools | Display Modes |
09-29-12, 08:19 PM | #21 | |
Apprentice EcoRenovator
Join Date: Nov 2008
Location: SW Montana
Posts: 139
Thanks: 1
Thanked 21 Times in 15 Posts
|
Quote:
Gary |
|
09-30-12, 09:33 AM | #22 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
There will definitely be pictures. I'm currently working on the trench and solar panel rack, and sharing my progress in this thread:
http://ecorenovator.org/forum/solar-...el-rack-7.html
__________________
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. |
10-05-12, 03:04 PM | #23 |
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.
__________________
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. |
10-05-12, 07:29 PM | #24 |
Master EcoRenovator
Join Date: Aug 2012
Location: Toronto
Posts: 958
Thanks: 40
Thanked 158 Times in 150 Posts
|
The grundfos are all available with the check valve built in. If you get the Resol variable speed control, your pump will be running at much lower power 80% of the time and I really like the UPS26-99. it is a very versatile pump.
|
10-07-12, 09:18 AM | #25 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
After a bit more thinking I think I'm going to go with the UP15-100F. I'll err on the cautious and cheaper side, especially since the gains for going to a larger pump really are quite minimal.
The one problem I'm having is finding the UP15-100F with the internal flow check valve. After looking at the grundfos spec sheet, I don't think I can actually get the pump with one, so I'll have to add that in as a separate item.
__________________
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. |
10-07-12, 09:40 AM | #26 | |
Master EcoRenovator
Join Date: Aug 2012
Location: Toronto
Posts: 958
Thanks: 40
Thanked 158 Times in 150 Posts
|
Quote:
As much as i like the 3 speed 26-99, it is too high an amperage for the variable speed controllers where the 15-100 will work with the RESOL controller so it looks like it is a good fit. Last edited by Mikesolar; 10-07-12 at 09:54 AM.. |
|
The Following User Says Thank You to Mikesolar For This Useful Post: | Daox (10-08-12) |
10-08-12, 12:54 PM | #27 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
That is a good idea. Would you suggest a mechanical heat trap, or just the raised tubing type?
__________________
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. |
10-08-12, 01:17 PM | #28 |
Master EcoRenovator
Join Date: Aug 2012
Location: Toronto
Posts: 958
Thanks: 40
Thanked 158 Times in 150 Posts
|
I would try one "U" on the supply going into the tank HX, 12" long should work, and one from the bottom of the HX as it is going to the pump. The second one may not be necessary but it is a cheaply made with a couple of 90s and could be added after if desired.
|
10-09-12, 07:16 AM | #29 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,525
Thanks: 1,162
Thanked 374 Times in 305 Posts
|
I ended up ordering the UP15-100F last night. The price was right around $140 plus about $7 for the flange kit. For more info on the installation see this thread:
http://ecorenovator.org/forum/solar-...anel-rack.html
__________________
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. |
10-09-12, 06:46 PM | #30 | |
Master EcoRenovator
Join Date: Aug 2012
Location: Toronto
Posts: 958
Thanks: 40
Thanked 158 Times in 150 Posts
|
Quote:
|
|
|
|