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Forum: Solar Heating 10-20-20, 09:28 AM
Replies: 128
Views: 154,500
Posted By Mikesolar
There is no time like the present....or future,...

There is no time like the present....or future, LOL
Forum: Renovations & New Construction 10-18-20, 05:48 PM
Replies: 9
Views: 27,052
Posted By Mikesolar
It says 135kwh per year but I will put my meter...

It says 135kwh per year but I will put my meter on it and see what a load takes.
Forum: Renovations & New Construction 10-17-20, 08:41 PM
Replies: 9
Views: 27,052
Posted By Mikesolar
fossil fuel free

Not sure where to put this so I stuck it here.

First, the 1958 house had a standard natural draft gas water heater (50% efficient if you are lucky), 1980 era SlantFin cast iron boiler (probably...
Forum: Geothermal & Heat Pumps 05-07-20, 06:27 AM
Replies: 12
Views: 30,177
Posted By Mikesolar
The thing I like about these units is that all...

The thing I like about these units is that all the vital HP functions are in the outdoor unit and only the commands for the indoor temp measuring is on the indoor unit.

Currently, I just have the...
Forum: Geothermal & Heat Pumps 05-04-20, 04:50 PM
Replies: 12
Views: 30,177
Posted By Mikesolar
For my test rig, I sized a flat plate heat...

For my test rig, I sized a flat plate heat exchanger to the output of the HP and I have a pump with a flow meter so I can get proper readings. I am using the indoor coils electronics but changing the...
Forum: Solar Heating 09-04-17, 07:57 PM
Replies: 10
Views: 16,362
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, 09:02 PM
Replies: 6
Views: 9,581
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, 05:35 PM
Replies: 6
Views: 9,581
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, 08:04 PM
Replies: 6
Views: 9,581
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, 07:24 PM
Replies: 3
Views: 12,072
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, 09:32 PM
Replies: 30
Views: 24,013
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, 07:15 PM
Replies: 30
Views: 24,013
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, 12:45 PM
Replies: 30
Views: 24,013
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, 07:53 PM
Replies: 38
Views: 33,867
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, 06:05 PM
Replies: 109
Views: 139,158
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, 07:02 AM
Replies: 31
Views: 35,935
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, 05:58 AM
Replies: 588
Views: 643,187
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, 08:41 PM
Replies: 13
Views: 26,125
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, 01:01 PM
Replies: 15
Views: 16,109
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, 08:09 PM
Replies: 5
Views: 8,363
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, 06:25 PM
Replies: 588
Views: 643,187
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, 09:27 PM
Replies: 588
Views: 643,187
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, 07:54 PM
Replies: 588
Views: 643,187
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, 06:25 PM
Replies: 12
Views: 14,140
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, 06:07 AM
Replies: 588
Views: 643,187
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)...
Showing results 1 to 25 of 149
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