Old hot water panels to refurbish.

bennelson · 02-25-10, 04:30 PM

Here is one panel that I have that I got from my cousin.

He has nine more. The panels need some TLC, but I was surprised at how warm it got just propped up in my garage on a sunny cold day!

YouTube - Solar hot water panel to refurbish

I am going to play around with what it takes to fix this panel up, and then decide what to do with the other ones he has. (They are frozen up against the outside of his garage right now...)

Daox · 02-26-10, 09:34 AM

Are all the panels from your cousin that size? I thought they were bigger?

What were you thinking of using for glazing? I don't know how they'd fit, but I still have all those thermalpane windows laying around not doing anything...

gasstingy · 02-26-10, 01:59 PM

Mother Earth News had an article on a family from Minnesota who made their own solar hot water system in an outbuilding and piped the water to their two story house to heat it with hydronic radiant floors. It showed how they built their own water storage tank using plywood, a pond liner to prevent leaks, a few fittings and some extruded polystyrene insulation. The tank held the solar heated water and they ran copper tubing into the lower part of their reservoir (using a fitting to go through the plywood and pond liner material) and made quite a few loops inside the tank and back out near the top of the tank). It was an inexpensive, but large capacity reservoir. They used 2x4's to frame the bottom and top of the tank to prevent the weight of the water from blowing the sides out. It might be worth considering if you are going to need a fairly substantial storage tank.

I belive that with ten solar water panels, you could likely heat your entire house with your only expense being to run a small circulation pump (after the system is set up). I'm sure your small PV setup could handle that small load.

Anyway, congratulations on the free SHW panel(s) and I'm looking forward to seeing how you use it/them.

Daox · 02-26-10, 02:14 PM

You'd be talking about Gary (owner of builditsolar.com). Hes a member here and posts occasionally. Very knowledgeable and willing to share info. His solar shed is an amazing project. I've read it many times.

SolarShed

gasstingy · 02-26-10, 03:06 PM

That's the one! I couldn't find it quickly enough, but that is the system that caused me to completely rethink the garage/workshop I am in the process of building. I've already poured the slab (with perimeter insulation as well as insulation beneath it) with my radiant heat manifold and PEX tubing. I plan to be comfy working in the garage with solar radiant floor and PV electricity.

Xringer · 02-26-10, 07:24 PM

Depending of the size of the space you want to heat, you might be in luck with 10 of those.

I'm kicking myself for giving away my three Novan collectors. I'll bet those could put
out 3,000 BTUh, even on a bad day..

In my house, I think a hot-water-to-forced-air would be the solution. (no ducts).

bennelson · 02-26-10, 09:51 PM

The panels I can get are not huge. They can be easily moved and installed by one person though.

I have a different panel, which I bought used, which is 4'x10' - that one will be used on my house for my solar hot water system.

I don't have fantastic solar access at my house, so it would be difficult to set up all these panels for heating my house. However, I might be able to mount a number of them on my detatched garage roof to help make the garage into heated space.

These panels have the glazing - it appears to be tempered low-iron glass. I have one of the "gaskets" - a rubber strip that goes around the outside edge of the glass and seals up the space between the glass and the aluminum frame.

I did have this solar panel just leaned up against the side of my garage. I had to chip away a lot of ice to get the gasket...

bennelson · 02-28-10, 09:50 PM

I went over to see Tim (Doax) today and brought the solar panel to refurbish.

In one day, we cleaned it up, soldered on new connections to replace the ones that were hacked off, and hooked it up with a pump and a barrel of water!

Here's what it looked like when we were done.

This was inside in an upstairs spare bedroom. That way we don't have to worry about the panel freezing, or climb around on a roof. The panel is basically mounted up against the inside of a window.

See all the photos we took of fixing this up at:
MobileMe Gallery

Xringer · 02-28-10, 10:25 PM

Nice job! When I first looked at the pics, one stood out instantly
http://gallery.me.com/benhdvideoguy/...C_3354/web.jpg

I said, they didn't have it in the hole! But then I saw the whole flat plate was movable.

When I installed my Novan collectors on the roof, I soldered on 3/4" screw on couplings.
looked like these..
http://image.made-in-china.com/2f0j0...n-Fittings.jpg

They connected the collectors to each other and to the up-down pipes.
And they made for a good leak-free install. It made taking them down easier too.

The hard part was using low-lead solder!

Daox · 03-01-10, 07:21 AM

Yeah, the panels aren't the highest quality out there, but they will definitely get the job done, and of course the price is right! We just have to find a good way to refurbish the rest of the panels.

Ben, I was thinking about the panels a bit more last night. We were talking about using C channel for side pieces. We don't have to use one long piece. We could cut out right around where the header pipes stick out and replace just that small area with C channel or re-bent aluminum sheet. We would just screw the C channel to the sheet aluminum frame. This would allow us to use whatever end connections we want since we could drop the collector straight down.

02-26-10, 09:34 AM	#2
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,525 Thanks: 1,162 Thanked 374 Times in 305 Posts	Are all the panels from your cousin that size? I thought they were bigger? What were you thinking of using for glazing? I don't know how they'd fit, but I still have all those thermalpane windows laying around not doing anything... __________________ 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.

02-26-10, 02:14 PM	#4
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,525 Thanks: 1,162 Thanked 374 Times in 305 Posts	You'd be talking about Gary (owner of builditsolar.com). Hes a member here and posts occasionally. Very knowledgeable and willing to share info. His solar shed is an amazing project. I've read it many times. SolarShed __________________ 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. Last edited by Daox; 02-26-10 at 03:41 PM..

02-26-10, 07:24 PM	#6
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Depending of the size of the space you want to heat, you might be in luck with 10 of those. I'm kicking myself for giving away my three Novan collectors. I'll bet those could put out 3,000 BTUh, even on a bad day.. In my house, I think a hot-water-to-forced-air would be the solution. (no ducts). Last edited by Xringer; 02-26-10 at 07:26 PM..

02-26-10, 09:51 PM	#7
bennelson Home-Wrecker Join Date: Sep 2008 Location: SE Wisconsin Posts: 546 Thanks: 3 Thanked 165 Times in 96 Posts	The panels I can get are not huge. They can be easily moved and installed by one person though. I have a different panel, which I bought used, which is 4'x10' - that one will be used on my house for my solar hot water system. I don't have fantastic solar access at my house, so it would be difficult to set up all these panels for heating my house. However, I might be able to mount a number of them on my detatched garage roof to help make the garage into heated space. These panels have the glazing - it appears to be tempered low-iron glass. I have one of the "gaskets" - a rubber strip that goes around the outside edge of the glass and seals up the space between the glass and the aluminum frame. I did have this solar panel just leaned up against the side of my garage. I had to chip away a lot of ice to get the gasket... __________________ 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.

02-28-10, 09:50 PM	#8
bennelson Home-Wrecker Join Date: Sep 2008 Location: SE Wisconsin Posts: 546 Thanks: 3 Thanked 165 Times in 96 Posts	I went over to see Tim (Doax) today and brought the solar panel to refurbish. In one day, we cleaned it up, soldered on new connections to replace the ones that were hacked off, and hooked it up with a pump and a barrel of water! Here's what it looked like when we were done. This was inside in an upstairs spare bedroom. That way we don't have to worry about the panel freezing, or climb around on a roof. The panel is basically mounted up against the inside of a window. See all the photos we took of fixing this up at: MobileMe Gallery __________________ 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.

02-26-10, 01:59 PM	#3
gasstingy Journeyman EcoRenovator Join Date: Feb 2010 Location: Arab, AL Posts: 491 Thanks: 109 Thanked 49 Times in 43 Posts	Mother Earth News had an article on a family from Minnesota who made their own solar hot water system in an outbuilding and piped the water to their two story house to heat it with hydronic radiant floors. It showed how they built their own water storage tank using plywood, a pond liner to prevent leaks, a few fittings and some extruded polystyrene insulation. The tank held the solar heated water and they ran copper tubing into the lower part of their reservoir (using a fitting to go through the plywood and pond liner material) and made quite a few loops inside the tank and back out near the top of the tank). It was an inexpensive, but large capacity reservoir. They used 2x4's to frame the bottom and top of the tank to prevent the weight of the water from blowing the sides out. It might be worth considering if you are going to need a fairly substantial storage tank. I belive that with ten solar water panels, you could likely heat your entire house with your only expense being to run a small circulation pump (after the system is set up). I'm sure your small PV setup could handle that small load. Anyway, congratulations on the free SHW panel(s) and I'm looking forward to seeing how you use it/them.

02-26-10, 03:06 PM	#5
gasstingy Journeyman EcoRenovator Join Date: Feb 2010 Location: Arab, AL Posts: 491 Thanks: 109 Thanked 49 Times in 43 Posts	That's the one! I couldn't find it quickly enough, but that is the system that caused me to completely rethink the garage/workshop I am in the process of building. I've already poured the slab (with perimeter insulation as well as insulation beneath it) with my radiant heat manifold and PEX tubing. I plan to be comfy working in the garage with solar radiant floor and PV electricity.

02-28-10, 10:25 PM	#9
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Nice job! When I first looked at the pics, one stood out instantly http://gallery.me.com/benhdvideoguy/...C_3354/web.jpg I said, they didn't have it in the hole! But then I saw the whole flat plate was movable. When I installed my Novan collectors on the roof, I soldered on 3/4" screw on couplings. looked like these.. http://image.made-in-china.com/2f0j0...n-Fittings.jpg They connected the collectors to each other and to the up-down pipes. And they made for a good leak-free install. It made taking them down easier too. The hard part was using low-lead solder!

03-01-10, 07:21 AM	#10
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,525 Thanks: 1,162 Thanked 374 Times in 305 Posts	Yeah, the panels aren't the highest quality out there, but they will definitely get the job done, and of course the price is right! We just have to find a good way to refurbish the rest of the panels. Ben, I was thinking about the panels a bit more last night. We were talking about using C channel for side pieces. We don't have to use one long piece. We could cut out right around where the header pipes stick out and replace just that small area with C channel or re-bent aluminum sheet. We would just screw the C channel to the sheet aluminum frame. This would allow us to use whatever end connections we want since we could drop the collector straight down. __________________ 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.