Welcome to the Solar Collector
Brainstorming and Development Page!


 

Home

Hot Air Collector

Hot Water Project 1

Hot Water & Space Heating

Solar Electric

Solar Construction 101

FAQs

Best Collectors

Simply Solar
Sign up Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 1 of 4      1   2   3   4   Next
joebehr

Registered:
Posts: 109
Reply with quote  #1 
Well I finally got started last night on building the 2x4 metal stud frame for my 1st hot air heater.
I have posted a few random pix but they're pretty much the same as every other frame/heater pix.
Once I finished the box I clamped the glazing on for testing purposes. I set the box up outside, with a 4" hole for the cold air intake and a 4" inch outlet hole. Without a fan I was building in excess of 160F so I rigged up a 50cfm fan at the intake opening and blew cool air into the box and still got 125F out the outlet hole.

My next phase is to mount the glass and then mount the heater to my shop wall.
Any suggestions are welcome...

Joe

Attached Images
jpeg photo_4.JPG (500.43 KB, 139 views)
jpeg photo_3.JPG (514.91 KB, 141 views)
jpeg photo_2.JPG (697.87 KB, 140 views)
jpeg photo_1.JPG (578.87 KB, 139 views)

joebehr

Registered:
Posts: 109
Reply with quote  #2 
Here are a few more pix of the screen collector /heater progress...

Attached Images
jpeg photo_4.JPG (661.66 KB, 205 views)
jpeg photo_3.JPG (735.69 KB, 206 views)
jpeg photo_2.JPG (880.17 KB, 203 views)
jpeg photo_1.JPG (626.45 KB, 203 views)

joebehr

Registered:
Posts: 109
Reply with quote  #3 
Last pix for now...so what's the magic trick for getting my pix turned in the right direction?

Attached Images
jpeg photo_4.JPG (780.47 KB, 134 views)
jpeg photo_3.JPG (726.20 KB, 138 views)
jpeg photo_2.JPG (521.32 KB, 134 views)

Garage_Hermit

Avatar / Picture

Registered:
Posts: 2,240
Reply with quote  #4 
Hi, Joe,

Nice looking build !
I like the look of these steel frames !

Regarding your fan, it sounds like it is hard-mounted to the collector.
Mebbe I'm wrong on that...
It might be interesting to try out a few positions, such as in duct, but at varying distances from the collector, such as 3 feet, six feet or 12 feet etc.

The idea is to give the airflow time to even out after exiting the fan blades.

Just a suggestion !

G_H


__________________
(1)  "Heat goes from hot to cold, there is no directional bias"
(2) It's wrote, "voilĂ " unless talking musical instruments...
solardan1959

Avatar / Picture

Registered:
Posts: 1,845
Reply with quote  #5 
joebehr,
   It's a little late now but I noticed you used steel studs and not steel stud track.  The nice thing about the stud track is it does not have any holes.  What's your plan with the holes?  They worry me because they will leak water easier.
Dan
joebehr

Registered:
Posts: 109
Reply with quote  #6 
I covered the 4 holes with an aluminum patch sealed with ATV automotive silicone gasket maker...it holds up to the heat and seals out any water.
I used these studs only because I was able to buy a bundle of 10 studs for $15.And the 30"x66" glass came from 2 old storm doors...hence the dimensions of the heaters. I have approx. 15 sq. ft of heater box and using a 50 cfm fan on the inlet side so the fan does not need to handle really hot air...I will try moving the fan a few feet away from the inlet to see if it improves anything.
solardan1959

Avatar / Picture

Registered:
Posts: 1,845
Reply with quote  #7 
joebehr,
  Good price on the studs, I only brought it up to ensure people are aware of the track instead of the studs.  For the right price I would probably follow your plan.  If your box is 2X4 a 50 cfm fan is plenty.  I generally plan on about 3 cfm per square feet so really 24 cfm should do it.  What was the outside temp?  If it was warmer, like 50 degrees or so you may find that at 20 degrees it may be pretty hard to make 125 at fifty and even 24 cfm in a panel your size.
  Not trying to take away from your project just trying to get more info and put out some concerns.
Dan

Went back and saw the title 30" X 66" = 13.75 square feet not 8 so 41 cfm which is not to far out of line with the 50 you have.  I'd say "never mind" but still curious about the outside temp.
gbwillson

Avatar / Picture

Registered:
Posts: 2,275
Reply with quote  #8 
Hi Joe,

Nice, clean build! It would look good on any house. Just wondering, are you not going to have a diffuser to prevent the intake air from hitting the glass? Otherwise, I would think you would have a lot of heat loss through the glass. As far as the pics orientation, are the pics oriented correctly(upright) on your phone or computer? Often we forget to turn our phones orientation to match the subject. They might need to be rotated upright before importing.

Greg, MN
netttech

Registered:
Posts: 720
Reply with quote  #9 
[smile] I sense a smile occured when you saw the temps. I'm betting each of us has had that same smile.

Jeff
Central IL 
joebehr

Registered:
Posts: 109
Reply with quote  #10 
The outside temp was 48F and the outlet temp actually maxed out at 160F with the blower off...and ran 115F with blower on.
If I can pump my shop air in at 40-45F I can expect a decent temp pumping back into the shop. I'm hoping to keep my place around 55F for perfect wood working conditions. I've got another identical screen heater to build so the pair can mount on the front of the shop facing south. Then I'm planning to put 2-4 more up on the roof facing SW.
Thanks for your input...trying to learn all I can.
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

 

web statistics