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Search: Posts Made By: Lawrence
Forum: Geothermal & Heat Pumps 07-27-22, 04:38 PM
Replies: 1,943
Views: 2,247,736
Posted By AC_Hacker
MILESTONE - Homemade Heatpump Manifesto breaks 2 million hits

I want to take a moment to recognize that the Homemade Heat Pump Manifesto has gone beyond 2 million page views. I would like to thank Daox and any other people who may have worked behind the scene...
Forum: Tools 02-04-22, 11:43 AM
Replies: 4
Views: 1,687
Posted By YuriyLogvin
Bought a thermal imager to perform heat loss audit of my home

Hi all, recently I bought myself a thermal imager, and just wanted to share how I used it to determine places where in my home significant heat loss happens.
Found out that I completely forgot to...
Forum: Geothermal & Heat Pumps 01-29-22, 04:38 PM
Replies: 10
Views: 2,905
Posted By YuriyLogvin
Hello everyone, I think I fixed mistakes that...

Hello everyone,
I think I fixed mistakes that were made in my initial geothermal heat pump design. I was wrong, and now it's apparent that the evaporator should be bigger than the condenser.

I...
Forum: Geothermal & Heat Pumps 01-27-22, 12:13 PM
Replies: 10
Views: 2,905
Posted By YuriyLogvin
Episode 1 - Introduction. In this episode I...

Episode 1 - Introduction.

In this episode I do a quick introduction to the DIY Geothermal Heat Pump project.

https://www.youtube.com/watch?v=FR4eW30ZMKY

Episode 2 - Building geothermal loop....
Forum: Appliances & Gadgets 01-20-22, 02:52 AM
Replies: 2
Views: 1,275
Posted By redneck
Griddle - Redneck style

.

Its been awhile since posted anything so here we go...


Griddle - Redneck style...


So, I was looking at getting in on the gas griddle craze and cooking outside to keep the smell,...
Forum: Solar Heating 01-02-22, 10:46 AM
Replies: 2
Views: 1,574
Posted By skyking
Moved to geothermal

Moved to geothermal
Forum: Geothermal & Heat Pumps 12-17-21, 01:50 AM
Replies: 5
Views: 1,897
Posted By Bobinater33
Well appearently I did something wrong and fried...

Well appearently I did something wrong and fried the unit, all it would do is make a high frequency noise. It kept tripping on inverter over current before it finally went bang. I looked closer and...
Forum: Geothermal & Heat Pumps 07-20-21, 08:40 AM
Replies: 16
Views: 4,831
Posted By Robl
DIY W2W heatpump

We now have a relatively well insulated house in the UK, needing a peak of 1.5kW over the last year to keep it warm in the coldest of weather. That would be 1.5kW of heat continuously on for 24hours...
Forum: Geothermal & Heat Pumps 02-21-20, 09:33 AM
Replies: 4
Views: 3,393
Posted By Fordguy64
Interesting Heat exchanger

So in my quest for cheap geothemal i found this company.

https://www.awebgeo.com/

Ive been in contact with them and the sales guy i have been in contact with has been great. Answered lots of...
Forum: Solar Heating 02-15-20, 04:08 PM
Replies: 38
Views: 24,067
Posted By menaus2
menaus2's 240sqft Hydronic Thermal collector

Hi All! It's been a while since I've documented a major project on the forum, so I'll be starting from the planning process going forward.

Last year I installed a 36sqft drainback collector with a...
Forum: Geothermal & Heat Pumps 11-03-18, 01:52 PM
Replies: 5
Views: 4,748
Posted By dark84
Home made air source heat pump

Hi for everyone!
I am from Europe. From Serbia.
I'm working on project to heat the house with two 18000btu split ac outdoor unit.
I don't use the indoors. I have a copper tube heat exchanger. The...
Forum: Geothermal & Heat Pumps 12-03-17, 02:38 AM
Replies: 91
Views: 57,290
Posted By Acuario
Yes you are correct, everyone has their own...

Yes you are correct, everyone has their own goals. The problem with the inverter is that the control system is so complex that the effort/reward for the 'community' is too high and I don't think it...
Forum: Energy Storage 03-03-16, 02:02 PM
Replies: 14
Views: 14,399
Posted By Mobile Master Tech
BBP, thanks for linking to this thread. Nice...

BBP, thanks for linking to this thread. Nice tank!

First, PEX has low thermal conductivity, especially in 3/4" or larger because of the wall thickness. For not much more, you can get 1'...
Forum: Solar Heating 02-19-16, 12:01 PM
Replies: 25
Views: 62,353
Posted By jeff5may
I can't believe I missed this thread! Sorry to...

I can't believe I missed this thread! Sorry to revive something long dead, but I didn't do it first...

Ben, how did this experiment turn out? Did it work? If so, did it do well? Did you retire the...
Forum: Energy Storage 03-22-14, 09:59 PM
Replies: 14
Views: 14,399
Posted By buffalobillpatrick
From this study: ...

From this study:
http://www.worldenergy.org/documents/congresspapers/412.pdf

Paraffin:
coefficient of thermal conduction – solid = .2W/mK
coefficient of thermal conduction – liquid = .15W/mK
...
Forum: Solar Heating 11-03-13, 01:16 PM
Replies: 93
Views: 46,006
Posted By jeff5may
I know y'all will hate this, but this is what I...

I know y'all will hate this, but this is what I did in my last (rental) house:

I ran the airflow backwards thru the (crappy) central air system from upstairs during the winter. There was one 5"...
Forum: Solar Heating 10-22-13, 07:27 PM
Replies: 27
Views: 18,602
Posted By ESharp
I currently have an older oil forced air furnace...

I currently have an older oil forced air furnace which Id love to stop buying oil for :) Ive installed a water-to-air heat exchanger (Finned Coil Water to Air Heat Exchangers...
Forum: Solar Heating 10-21-13, 08:52 PM
Replies: 27
Views: 18,602
Posted By ESharp
Tank

I really liked the simplicity of Garys drainback system and the large low cost storage tank. I went with a 6 long x 3.5 wide x 4 tall tank as that was the biggest I could reasonably fit in my...
Forum: Geothermal & Heat Pumps 05-15-12, 08:49 AM
Replies: 91
Views: 57,290
Posted By cadillackid
Minisplit COmmunications

This is some fun stuff!! one of the members here found me on a Prius forum.. 3 years ago i did a lot of work on this with CHIGO branded minisplits to use in my Home automation system...

CHIGO...
Forum: Geothermal & Heat Pumps 05-06-12, 03:24 PM
Replies: 91
Views: 57,290
Posted By Acuario
I've made some pretty significant progress since...

I've made some pretty significant progress since my last post - shut in my shed for the last 2 days with a pc/logic analyser/oscilloscope etc...

I can nowcommunicate with the machine and turn it...
Forum: Conservation 02-28-12, 10:37 PM
Replies: 1
Views: 4,035
Posted By abogart
Sealing the basement (continued)

I picked up a 4" x 8" sheet of 2" rigid blue foam board and a can of Touch N' Foam minimal expanding spray foam from my local small-town lumber yard for about $42.
...
Forum: Geothermal & Heat Pumps 11-11-11, 03:49 PM
Replies: 92
Views: 64,049
Posted By Acuario
It's all here: Boiler pre-heater using recycled...

It's all here:
Boiler pre-heater using recycled air conditioner (http://www.tortosaforum.com/boiler.html)

Let me know if you want any more photos/details and I'll post them.

The radiators in...
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