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Search: Posts Made By: Mikesolar
Forum: Solar Heating 09-04-17, 06:57 PM
Replies: 10
Views: 3,186
Posted By Mikesolar
In case you don't know, EVO has a huge failure...

In case you don't know, EVO has a huge failure rate and for all I know they could be defunct as a company. None of my wholesalers sell them any more. Thermomax is defunct too so getting tubes will be...
Forum: Geothermal & Heat Pumps 04-15-16, 08:02 PM
Replies: 6
Views: 2,187
Posted By Mikesolar
Here are a couple files for your enjoyment. One...

Here are a couple files for your enjoyment. One gives the sq ft of radiation for various cast iron rad types and the other gives an overview of the stelrad line.

The cast iron one allows you to...
Forum: Geothermal & Heat Pumps 04-14-16, 04:35 PM
Replies: 6
Views: 2,187
Posted By Mikesolar
Creeky, I would, without hesitation, say that...

Creeky,
I would, without hesitation, say that this can be done. Unless old cast iron rads are available cheap or free, then the next best thing is the Stelrad type of radiator which is the standard...
Forum: Geothermal & Heat Pumps 03-17-16, 07:04 PM
Replies: 6
Views: 2,187
Posted By Mikesolar
I've done a lot of work with both cast iron rads...

I've done a lot of work with both cast iron rads and the steel panels rads (literally 1000s of them) and I will say that the jury is still out as to which one is more efficient, but I know which one...
Forum: Renovations & New Construction 10-17-15, 06:24 PM
Replies: 3
Views: 3,118
Posted By Mikesolar
Steve, it depends on how thick the screed is. I...

Steve, it depends on how thick the screed is. I do not put tubing under it at all but if it is in a concrete slab of 3 or 4" the heat would migrate over regardless. If the screed is 1.5" (for...
Forum: Conservation 10-07-15, 08:32 PM
Replies: 30
Views: 5,373
Posted By Mikesolar
The bumblebee is an ECM pump where the control is...

The bumblebee is an ECM pump where the control is designed to have a fixed dT (20F for example) which means that if you have 2 or 3 or more zones with zone valves, the pumps will increase or decrease...
Forum: Conservation 10-07-15, 06:15 PM
Replies: 30
Views: 5,373
Posted By Mikesolar
More stuff. The pump on the 4 year old mid...

More stuff. The pump on the 4 year old mid efficiency boiler is an Armstrong pump which draws 3.3A. I'm getting rid of the red beast and putting in the Taco Bumblebee which uses around 20w. A no...
Forum: Conservation 10-07-15, 11:45 AM
Replies: 30
Views: 5,373
Posted By Mikesolar
Haha, got a big hole in the front of the house ...

Haha, got a big hole in the front of the house

Putting in a new bay window, the old one was painted shut single glazed with a storm. The previous owners were smokers so I guess they didn't value...
Forum: Geothermal & Heat Pumps 09-05-15, 06:53 PM
Replies: 38
Views: 7,209
Posted By Mikesolar
I can see them all but I didn't look for a few...

I can see them all but I didn't look for a few weeks.
Forum: Conservation 07-22-15, 05:05 PM
Replies: 109
Views: 86,253
Posted By Mikesolar
If the usage is correct, you actually have a big...

If the usage is correct, you actually have a big budget. It may be worth it to beg/borrow.... enough for a high seer ductless that will de-humidify as well. It can pay for itself quickly. Many of the...
Forum: Solar Heating 06-23-15, 06:02 AM
Replies: 31
Views: 7,147
Posted By Mikesolar
Sorry guys but lots of odd and old info in this...

Sorry guys but lots of odd and old info in this thread.

First, I have put in lots of all types of solar thermal systems and really the only drawbacks to a drainback system is pumping power and a...
Forum: Renovations & New Construction 03-15-15, 04:58 AM
Replies: 588
Views: 229,762
Posted By Mikesolar
Reduce your manifold down to 3/4" and get a 3/4"...

Reduce your manifold down to 3/4" and get a 3/4" pump. 1" pipe and fittings are usually double the cost of 3/4" and for your flow rate, 3/4 is needed.
Forum: Solar Heating 03-10-15, 07:41 PM
Replies: 13
Views: 8,652
Posted By Mikesolar
I don't see why you cannot use the IBC with a...

I don't see why you cannot use the IBC with a wire cage for hot water up to even 180F. The plastic may soften SLIGHTLY but not enough to make a difference. I would just set your controller to limit...
Forum: Lighting 03-08-15, 12:01 PM
Replies: 15
Views: 3,625
Posted By Mikesolar
I hate those things. I had them in some 500w work...

I hate those things. I had them in some 500w work lights and they always burn out. And yes, they suck power.

You may have to change the fixture.
Forum: Solar Heating 02-27-15, 07:09 PM
Replies: 5
Views: 1,418
Posted By Mikesolar
I've made my supports out of 1/2" CPVC water pipe...

I've made my supports out of 1/2" CPVC water pipe and tees with a hockey puck with a blind hole in it for the feet. Nice and stable and lasts for ever.
Forum: Renovations & New Construction 02-26-15, 05:25 PM
Replies: 588
Views: 229,762
Posted By Mikesolar
As for control of the slab, I would just use a...

As for control of the slab, I would just use a slab sensor in a neutral area to trigger the heat source. Don't worry about night setbacks or fancy controls. Have lots of pumpkin or apple pie for...
Forum: Renovations & New Construction 02-20-15, 08:27 PM
Replies: 588
Views: 229,762
Posted By Mikesolar
AC, It is all great to understand how turbulent...

AC, It is all great to understand how turbulent and laminar flow affects heat transfer but there is something you forgot to mention. If you increase the diameter, your flow will become more laminar...
Forum: Renovations & New Construction 02-19-15, 06:54 PM
Replies: 588
Views: 229,762
Posted By Mikesolar
Drake, the reason 1/2" tubing is used is because...

Drake, the reason 1/2" tubing is used is because it is the closest size to the 16mm tubing used Europe. Full stop. When I started radiant, all that was available was metric tubing (16mm OD) and when...
Forum: Geothermal & Heat Pumps 02-19-15, 05:25 PM
Replies: 12
Views: 2,961
Posted By Mikesolar
I will hook it to a MEGA when it comes in the...

I will hook it to a MEGA when it comes in the mail. I had one but seem to have blown most of the output pins with wrong resistors values. I have a relay board so I should be able to run the 12vdc...
Forum: Renovations & New Construction 02-19-15, 05:07 AM
Replies: 588
Views: 229,762
Posted By Mikesolar
Ahhh, there is not a proportional reduction in...

Ahhh, there is not a proportional reduction in head loss, nor a proportional increase in heat transfer capacity over a 1/2' tube.
The heat transfer is all about wall surface area (and turbulence)...
Forum: Renovations & New Construction 02-18-15, 06:38 PM
Replies: 588
Views: 229,762
Posted By Mikesolar
5/8" tubing is fine but only if it is free and...

5/8" tubing is fine but only if it is free and then you can do 2 loops as you were planning before. Is it 5/8" "nominal" or real 5/8" OD? If it is 1/2" nominal it is .625OD.

I prefer the ring...
Forum: Geothermal & Heat Pumps 02-18-15, 01:23 PM
Replies: 48
Views: 10,658
Posted By Mikesolar
Yup, and I know it is made for liquid injection...

Yup, and I know it is made for liquid injection purposes. I haven't seen any reference to it being used as a main EEV. It needs the solenoid to activate it and it is a normally closed valve like...
Forum: Renovations & New Construction 02-17-15, 04:17 PM
Replies: 588
Views: 229,762
Posted By Mikesolar
Totally agree with what BBP said, + if the slab...

Totally agree with what BBP said, + if the slab is 4" thick you can do 12 centers but 8" is more efficient. Any over pour (1.5" gypcrete, for example) should be MAX 9" spacing, 6" is better....
Forum: Geothermal & Heat Pumps 02-15-15, 07:39 AM
Replies: 48
Views: 10,658
Posted By Mikesolar
I wish i had the knowledge to write code but I...

I wish i had the knowledge to write code but I don't.... yet. I am a programming luddite so it is really hard for me.:D

BBP, could you write one with 1 thermister instead of the pressure sensor...
Forum: Geothermal & Heat Pumps 02-14-15, 05:21 PM
Replies: 48
Views: 10,658
Posted By Mikesolar
BBP, did you write all this? If so, I'm...

BBP, did you write all this? If so, I'm impressed:D

Now, could there be one written for subcooling which can control an EEV
Showing results 1 to 25 of 144

 
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