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Search: Posts Made By: ESharp
Forum: Tools 02-05-15, 12:16 PM
Replies: 16
Views: 6,599
Posted By ESharp
The benefit? No wires! Tiny! (it’s the diameter...

The benefit? No wires! Tiny! (it’s the diameter of a dime by 6mm high)

I’ve only used the wired DS18B20 sensors for my solar hot water system, so sorry, only second hand experience. Some people at...
Forum: Tools 04-22-14, 09:44 PM
Replies: 16
Views: 6,599
Posted By ESharp
A little more expensive, but for...

A little more expensive, but for ultra-flexibility and portability, there are the 'iButton' sensors from Maxim: Temperature and Humidity Data Logging - Maxim...
Forum: Solar Heating 12-23-13, 08:23 PM
Replies: 12
Views: 4,074
Posted By ESharp
Properly constructed panels of copper and...

Properly constructed panels of copper and aluminum should be fine with any tilt.

Selecting a tilt is more a matter of optimization of annual vs winter collection of energy. See graph 2 here:...
Forum: Solar Heating 12-23-13, 06:34 PM
Replies: 12
Views: 4,074
Posted By ESharp
You don't really have to worry about stagnation...

You don't really have to worry about stagnation with a drainback system. Fluid will not be in the collectors when the system is not on. Slope in a drainback is to ensure water can easily flow back to...
Forum: Solar Heating 12-21-13, 02:41 PM
Replies: 11
Views: 4,147
Posted By ESharp
Yep,...

Yep, http://ecorenovator.org/forum/solar-heating/3276-large-drainback-solar-hot-water-project.html is the one.

I ended up using PEX on the return side (due to an ~90' pipe run). It does have...
Forum: Solar Heating 10-27-13, 11:32 AM
Replies: 11
Views: 4,147
Posted By ESharp
Drainback system design

Hereís a website I found pretty useful when designing and building my solar hot water system (Solar Water Heater Design (http://www.solarhotwater-systems.com/solar-water-heating-101/)). Dr. Ben is a...
Forum: Solar Heating 10-27-13, 10:44 AM
Replies: 26
Views: 8,960
Posted By ESharp
One issue I’m working through at the moment is...

One issue I’m working through at the moment is getting reliable readings from the temperature sensors. As soon as I plug in a fourth sensor, I stop getting readings from all of them. I’ve done a bit...
Forum: Solar Heating 10-27-13, 10:14 AM
Replies: 26
Views: 8,960
Posted By ESharp
The furnace just has a single speed fan, and from...

The furnace just has a single speed fan, and from what I can tell so far I'll need all the air flow I can get with the low temp water.

Here are a few pictures of some insulating I did yesterday....
Forum: Solar Heating 10-22-13, 08:53 PM
Replies: 26
Views: 8,960
Posted By ESharp
:) Certainly, love to give you a tour.

:) Certainly, love to give you a tour.
Forum: Solar Heating 10-22-13, 08:30 PM
Replies: 26
Views: 8,960
Posted By ESharp
Those are good panels, I've even taken a tour of...

Those are good panels, I've even taken a tour of their shop, but at $1k a pop, they were are a bit out of the budget.

The Aspotogan is just across the bay from me :)
Forum: Solar Heating 10-22-13, 08:11 PM
Replies: 26
Views: 8,960
Posted By ESharp
Thanks Mike, Yeah I will definitely have an...

Thanks Mike,

Yeah I will definitely have an abundance of extra energy in the summer. A pool or hot tub is a possibility. It is a drainback system, so if the tank is maxed I just need to turn the...
Forum: Solar Heating 10-22-13, 07:47 PM
Replies: 26
Views: 8,960
Posted By ESharp
Controls

I decided to use an Arduino for the controls. Since I wanted to integrate the solar with my heating system, I figured it would give me plenty of flexibility. Iím using one wire DS18B20 digital temp...
Forum: Solar Heating 10-22-13, 07:27 PM
Replies: 26
Views: 8,960
Posted By ESharp
I currently have an older oil forced air furnace...

I currently have an older oil forced air furnace which Iíd love to stop buying oil for :) Iíve installed a water-to-air heat exchanger (Finned Coil Water to Air Heat Exchangers...
Forum: Solar Heating 10-22-13, 11:39 AM
Replies: 26
Views: 8,960
Posted By ESharp
Thanks Daox, I'll be posting in bits as I have...

Thanks Daox, I'll be posting in bits as I have time. It has been certainly the same for me, slow progress, step by step. These systems are more work then they first appear. I'm still not quite...
Forum: Introductions 10-22-13, 11:05 AM
Replies: 2
Views: 1,479
Posted By ESharp
Thanks Daox, Here's a link to that thread....

Thanks Daox,

Here's a link to that thread. I'll add details as I get a chance.

http://ecorenovator.org/forum/solar-heating/3276-large-drainback-solar-hot-water-project.html
Forum: Solar Heating 10-21-13, 08:52 PM
Replies: 26
Views: 8,960
Posted By ESharp
Tank

I really liked the simplicity of Garyís drainback system and the large low cost storage tank. I went with a 6í long x 3.5í wide x 4í tall tank as that was the biggest I could reasonably fit in my...
Forum: Solar Heating 10-21-13, 08:36 PM
Replies: 26
Views: 8,960
Posted By ESharp
After a bit of layout work I decided I only...

After a bit of layout work I decided I only really had space for 12 panels, even on the ground. The structure is 40í long, with 10 post holes (4 sections, each 10í long). The design is similar to...
Forum: Solar Heating 10-21-13, 08:20 PM
Replies: 26
Views: 8,960
Posted By ESharp
I had to start thinking where I could fit 16...

I had to start thinking where I could fit 16 panels. 16 was too many for the roof and with that many panels, contributing to winter heating was my goal. The roof is at ~25deg pitch, whereas 65-70deg...
Forum: Solar Heating 10-21-13, 08:15 PM
Replies: 26
Views: 8,960
Posted By ESharp
It all started when I was browsing Kijiji (like...

It all started when I was browsing Kijiji (like Craigslist) last September and noticed some used panels for sale. There was a picture of five of them and I thought great, five should be able to do...
Forum: Solar Heating 10-21-13, 08:12 PM
Replies: 26
Views: 8,960
Posted By ESharp
Large drainback solar hot water project

Over the past year Iíve been picking away at a large ground mounted solar hot water system for my house. I got a lot of inspiration to do it from a few members of this forum and Garyís...
Forum: Introductions 10-21-13, 08:04 PM
Replies: 2
Views: 1,479
Posted By ESharp
Hello from Nova Scotia

Hi Everyone,

Iím a long time lurker, first time poster. I live in Nova Scotia, Canada and over the past year I've been working on a large solar hot water system which I got a lot of inspiration...
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