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Forum: Geothermal & Heat Pumps Today, 05:46 PM
Replies: 1
Views: 138
Posted By jeff5may
Just got a free minute to check the forums....

Just got a free minute to check the forums. Life's been hectic for the last few months and all the side project stuff got put on hold.

It looks as if you are overestimating your compressor mass...
Forum: EcoRenovator Blog Discussion 07-31-21, 09:14 AM
Replies: 7
Views: 2,916
Posted By jeff5may
Just took another look at this thread, and I'm...

Just took another look at this thread, and I'm sort of surprised there aren't more responses.

The thing that most sours my outlook on wind and solar sources is the natural gas backup that comes...
Forum: Geothermal & Heat Pumps 07-30-21, 11:00 AM
Replies: 5
Views: 144
Posted By jeff5may
Short term, quickie cheap: 220 window AC unit off...

Short term, quickie cheap: 220 window AC unit off marketplace or craigslist

Longer term, not too much: natural gas forced air garage heater plus mentioned window unit

Long term, somewhat not...
Forum: Geothermal & Heat Pumps 07-26-21, 09:12 AM
Replies: 2
Views: 300
Posted By jeff5may
It depends on the system. Lots of ifs and...

It depends on the system. Lots of ifs and measurements to verify, like in the picture. The main idea is that there's little to no subcooling in the condenser side of the system when a liquid receiver...
Forum: Introductions 06-25-21, 08:37 PM
Replies: 9
Views: 643
Posted By jeff5may
For some case studies, check out builditsolar.com...

For some case studies, check out builditsolar.com

For current prices and lots of helpful system info, check out renvu.com

You'll have to register to see prices at renvu, but it's worth it. The...
Forum: Geothermal & Heat Pumps 06-25-21, 12:45 PM
Replies: 4
Views: 658
Posted By jeff5may
Dguzzi, Google ammonia absorption...

Dguzzi,

Google ammonia absorption refrigeration.
https://en.m.wikipedia.org/wiki/Absorption_refrigerator

Same basic thing as phase change refrigeration, but without the power hungry...
Forum: Geothermal & Heat Pumps 06-13-21, 11:33 PM
Replies: 4
Views: 658
Posted By jeff5may
You just described how a commercial ice machine...

You just described how a commercial ice machine works. Cycle starts, and a valve fills up a tank to a preset level. A pump recirculates the water over the evaporator / mold. A probe senses the ice...
Forum: Geothermal & Heat Pumps 05-29-21, 04:19 AM
Replies: 3
Views: 547
Posted By jeff5may
If the guts were in fact exposed to atmosphere,...

If the guts were in fact exposed to atmosphere, it is pretty easy to check for moisture in the system. The HVAC supply houses have "the stuff" to do it with. Not free, but not super expensive.
...
Forum: Solar Heating 05-23-21, 03:40 AM
Replies: 6
Views: 1,750
Posted By jeff5may
Sorry, life and my schedule got in the way. Got...

Sorry, life and my schedule got in the way. Got everything done with the smaller one except the glass. The particle board I used was a little swollen in a few places, so the glass won't fit inside...
Forum: Solar Power 05-19-21, 12:47 AM
Replies: 745
Views: 209,255
Posted By jeff5may
Mike, Enphase makes a whole microgrid...

Mike,

Enphase makes a whole microgrid setup. The batteries come in 3.4 kwh (encharge 3) and 10 kwh (encharge 10) capacities. The hub that connects the grid, the panels, the batteries and the home...
Forum: EcoRenovator Blog Discussion 04-10-21, 08:10 PM
Replies: 7
Views: 2,916
Posted By jeff5may
Solar thermal and PV is a good investment for us...

Solar thermal and PV is a good investment for us "small guys": individual and single family home dwellers. Nearly as good for retail store rooftops. Return on investment is usually pretty short...
Forum: Lawn and Garden 03-26-21, 03:08 PM
Replies: 1
Views: 917
Posted By jeff5may
Before you start throwing down anything, get a...

Before you start throwing down anything, get a soil test done. If you have desparately separate zones, test them separately. This is without a doubt the step most people forget or dismiss. How do you...
Forum: Solar Power 03-21-21, 09:46 PM
Replies: 8
Views: 1,107
Posted By jeff5may
Ok, don't hesitate to post it up on the other...

Ok, don't hesitate to post it up on the other thread whenever you do something with it. I'll sure offer any help I can. Most all of the inverter mini splits have muscles in them like front load...
Forum: Appliances & Gadgets 03-21-21, 03:43 PM
Replies: 18
Views: 2,178
Posted By jeff5may
I just went a couple of rounds with a...

I just went a couple of rounds with a mobo/processor/memory rig like that. I believe it was the same processor, maybe not the k version. Intel desktop board with a skull on it. The eyes light up to...
Forum: Solar Heating 03-21-21, 04:26 AM
Replies: 6
Views: 1,750
Posted By jeff5may
We finally got a clear day that wasn't windy. I...

We finally got a clear day that wasn't windy. I got the small one about whipped together today. A buddy had a bunch of wood shelving this week, and I grabbed half a truckload of it from him. So the...
Forum: Solar Power 03-21-21, 03:49 AM
Replies: 8
Views: 1,107
Posted By jeff5may
Check with a local electrician, different states...

Check with a local electrician, different states have different rules for what's gotta hookup how. Many wiring possibilities and only a few approved layouts. Plus it's high voltage utility power. I...
Forum: Solar Power 03-18-21, 01:08 PM
Replies: 56
Views: 63,394
Posted By jeff5may
I don't know why I didn't check on this thread...

I don't know why I didn't check on this thread over the years. I actually tried out a couple of experimental rigs using this principle, and they both worked.

The first setup was built in one day...
Forum: Solar Heating 03-13-21, 09:35 PM
Replies: 6
Views: 1,750
Posted By jeff5may
Nope, not trying to do a copper skeleton and roll...

Nope, not trying to do a copper skeleton and roll form or solder or both. If it was going on a roof, if it was meant to last 50 years, if I had a big budget... Maybe. Too high speed high cost for my...
Forum: Solar Heating 03-10-21, 05:57 PM
Replies: 6
Views: 1,750
Posted By jeff5may
Looking for a suitable design, I found one on...

Looking for a suitable design, I found one on builditsolar. They call it the MTD collector, short for modified trickle down.

https://www.builditsolar.com/Experimental/MTD/MTD.htm

There seem to...
Forum: Solar Heating 03-10-21, 12:29 AM
Replies: 6
Views: 1,750
Posted By jeff5may
Cheapest most effective solar thermal system ever

Due to a few armchair conversations with the masses, I've decided to build a few of the cheapest, most effective solar thermal collector panels ever. Here's the plan:

I did some research online...
Forum: Conservation 02-27-21, 11:55 PM
Replies: 6
Views: 1,272
Posted By jeff5may
Being the winter, now is the best time to get an...

Being the winter, now is the best time to get an infrared camera and hunt down the heat leaks. There was nowhere to rent one where I live, so I ended up buying a seek. Flir makes one now that is...
Forum: Conservation 02-27-21, 11:17 PM
Replies: 6
Views: 1,272
Posted By jeff5may
I moved into a fairly new house about 2 years...

I moved into a fairly new house about 2 years ago. I was having sticker shock the first winter. That month, I went to the big box store and blew up 8 inches of cellulose into the top floor attic. The...
Forum: Tools 02-10-21, 09:16 PM
Replies: 41
Views: 3,782
Posted By jeff5may
Nice! You got a steal on that one.

Nice! You got a steal on that one.
Forum: Other Improvements 02-10-21, 01:36 AM
Replies: 18
Views: 2,924
Posted By jeff5may
Ad hominem, hahaha now I really feel old! I...

Ad hominem, hahaha now I really feel old! I apologise if I hurt you somehow trying to offer practical suggestions. See ya round, good luck in your endeavors.
Forum: Other Improvements 02-09-21, 02:49 PM
Replies: 18
Views: 2,924
Posted By jeff5may
Next, the pv solar. Your sunpower panels are...

Next, the pv solar. Your sunpower panels are rated at 200 watts per square meter, peak output. Going with your 4 hours of sun per day, this gives you an average figure of 33⅓ watts per square meter....
Showing results 1 to 25 of 500

 
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