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
Register Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 3 of 3      Prev   1   2   3
baothaitu

Registered:
Posts: 11
Reply with quote  #21 
I was being cheap when considered placing the bi-metal snap disc on the pipe, after doing quite a few research online and also your thought on this I might opt out to get a Electronic Temperature Control from http://www.mydtcstore.com/index.html It is probably the cheapest controller that I can find online right now beside eBay (I just don't trust electronic device made in China) I might get the TriDTC but the display of that board looks very confusing compare to the DualDTC. Anyway, I have to built the collector first before I start to discuss about running the system [biggrin]

Ky-Jeeper

Avatar / Picture

Registered:
Posts: 199
Reply with quote  #22 
Sometimes cheap equals simple. I have seen alot of time and money wasted in industrial applications over the years. One of my old bosses said were only going from point A to point B.

Me I would buy a couple of replacement snap switchs and save your money for other parts of your project.








Quote:
Originally Posted by baothaitu
I was being cheap when considered placing the bi-metal snap disc on the pipe, after doing quite a few research online and also your thought on this I might opt out to get a Electronic Temperature Control from http://www.mydtcstore.com/index.html It is probably the cheapest controller that I can find online right now beside eBay (I just don't trust electronic device made in China) I might get the TriDTC but the display of that board looks very confusing compare to the DualDTC. Anyway, I have to built the collector first before I start to discuss about running the system [biggrin]
netttech

Registered:
Posts: 720
Reply with quote  #23 
Baot,
There's nothing wrong with Snap switches. They are 'cheap' but they do work. I just think mounting direct on the tubing is the better option.

The 1st picture below is of my current flat panel & the snap switch location. I think it needs to farther away from the exit. It also shows the switch is mounted on the backside of the flashing, but below the flatten section of copper soldered onto the tubing.

The 2nd picture is from last years parabolic panel. The location is about the place, but mounted onto the tubing. This was before I soldered the flatten copper piece onto the tubing.

BTW the snap switch needs to have full contact with the tubing. Since the tubing is round & the switch is flat, part of the flat switch won't be contacting the tubing.  It doesn't sense the heat well if part of the switch isn't contacting the tubing.

To correct this problem (last year) I flatten a chunk of copper tubing, placed it under the switch, onto the tubing, along with a small piece of black flashing, between the flatten copper & switch.

This year I soldered that flatten section onto the tubing. Using an ohmmeter I confirmed good contact between the tubing & bottom of the flatten copper.

Jeff
Central IL
P9291200.JPG PC180355.JPG 

Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

 

web statistics