Forum: Solar Heating
10-20-20, 09:28 AM
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Replies: 128
Views: 152,939
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Forum: Renovations & New Construction
10-18-20, 05:48 PM
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Replies: 9
Views: 26,328
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Forum: Renovations & New Construction
10-17-20, 08:41 PM
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Replies: 9
Views: 26,328
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...
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Forum: Geothermal & Heat Pumps
05-07-20, 06:27 AM
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Replies: 12
Views: 29,376
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...
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Forum: Geothermal & Heat Pumps
05-04-20, 04:50 PM
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Replies: 12
Views: 29,376
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...
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Forum: Solar Heating
09-04-17, 07:57 PM
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Replies: 10
Views: 15,828
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...
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Forum: Geothermal & Heat Pumps
04-15-16, 09:02 PM
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Replies: 6
Views: 9,200
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Forum: Geothermal & Heat Pumps
04-14-16, 05:35 PM
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Replies: 6
Views: 9,200
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...
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Forum: Geothermal & Heat Pumps
03-17-16, 08:04 PM
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Replies: 6
Views: 9,200
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Forum: Renovations & New Construction
10-17-15, 07:24 PM
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Replies: 3
Views: 11,706
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Forum: Conservation
10-07-15, 09:32 PM
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Replies: 30
Views: 23,171
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Forum: Conservation
10-07-15, 07:15 PM
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Replies: 30
Views: 23,171
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...
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Forum: Conservation
10-07-15, 12:45 PM
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Replies: 30
Views: 23,171
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Forum: Geothermal & Heat Pumps
09-05-15, 07:53 PM
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Replies: 38
Views: 32,608
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Forum: Conservation
07-22-15, 06:05 PM
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Replies: 109
Views: 138,112
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Forum: Solar Heating
06-23-15, 07:02 AM
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Replies: 31
Views: 35,028
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Forum: Renovations & New Construction
03-15-15, 05:58 AM
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Replies: 588
Views: 638,092
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Forum: Solar Heating
03-10-15, 08:41 PM
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Replies: 13
Views: 25,588
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...
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Forum: Lighting
03-08-15, 01:01 PM
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Replies: 15
Views: 15,378
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Forum: Solar Heating
02-27-15, 08:09 PM
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Replies: 5
Views: 8,065
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Forum: Renovations & New Construction
02-26-15, 06:25 PM
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Replies: 588
Views: 638,092
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...
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Forum: Renovations & New Construction
02-20-15, 09:27 PM
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Replies: 588
Views: 638,092
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...
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Forum: Renovations & New Construction
02-19-15, 07:54 PM
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Replies: 588
Views: 638,092
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Forum: Geothermal & Heat Pumps
02-19-15, 06:25 PM
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Replies: 12
Views: 13,062
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...
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Forum: Renovations & New Construction
02-19-15, 06:07 AM
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Replies: 588
Views: 638,092
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)...
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