Forum: Geothermal & Heat Pumps
09-25-17, 04:24 PM
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Replies: 96
Views: 66,837
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Forum: Geothermal & Heat Pumps
09-25-17, 03:40 PM
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Replies: 96
Views: 66,837
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Forum: Geothermal & Heat Pumps
09-25-17, 12:47 PM
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Replies: 96
Views: 66,837
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Forum: Geothermal & Heat Pumps
09-25-17, 02:42 AM
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Replies: 96
Views: 66,837
The COP and amount of heat output are...
The COP and amount of heat output are measured/calculated under a certain set of test conditions.
As there test setup likely did mot involve exactly what you are looking at doing then the ratings...
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Forum: Geothermal & Heat Pumps
09-25-17, 01:53 AM
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Replies: 96
Views: 66,837
We are talking about a heat pump, it doesn,t...
We are talking about a heat pump, it doesn,t create, destroy, amplify, magnify, concentrate or otherwise pull heat from the ether.
It's only purpose in life is to move heat from one place to...
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Forum: Geothermal & Heat Pumps
09-24-17, 03:28 PM
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Replies: 96
Views: 66,837
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Forum: The Billiards Room
06-10-17, 01:00 PM
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Replies: 9
Views: 7,462
There are a number of options for motor speed...
There are a number of options for motor speed control, it all depends on how big the motor needs to be and how cheap you want it.
Simplest is probably a dc motor from a treadmill, scooter or...
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Forum: Renovations & New Construction
03-09-17, 04:03 PM
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Replies: 5
Views: 7,588
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Forum: Geothermal & Heat Pumps
02-04-17, 01:01 PM
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Replies: 13
Views: 11,608
As you are now measuring inside, outside and...
As you are now measuring inside, outside and water temperature you have all the inputs you need for a simple automated weather compensation.
That may well be close enough that you don't notice any...
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Forum: Geothermal & Heat Pumps
02-02-17, 04:45 AM
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Replies: 13
Views: 11,608
Acuario
You say the floor is typically 31 to...
Acuario
You say the floor is typically 31 to 34 and needs increasing for exceptional weather, is your controller allowing for outside temperature (weather compensation) or just working at a fixed...
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Forum: Renovations & New Construction
10-18-15, 03:59 AM
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Replies: 3
Views: 10,388
Thanks Mikesolar
Screed will be 120mm thick...
Thanks Mikesolar
Screed will be 120mm thick on 140mm of insulation, bit thicker than the norm but that's the way the levels are working out to match the existing floor.
Think i will miss out...
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Forum: Renovations & New Construction
10-17-15, 12:54 PM
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Replies: 3
Views: 10,388
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Forum: Conservation
10-08-15, 01:41 PM
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Replies: 30
Views: 20,372
Yes we call it Microbore, 8mm OD used to be...
Yes we call it Microbore, 8mm OD used to be common.
Generally 10mm OD minimum now although mostly 15mm, 8mm and i guess 10mm to a lesser degree has a tendency to become blocked with sludge in older...
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Forum: Wind Power
10-06-15, 03:59 PM
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Replies: 18
Views: 28,664
Your numbers are off by a factor of well over...
Your numbers are off by a factor of well over 1000!
At 2mph the betz limit (maximum possible energy with a perfect generator and rotor) is 10w for a 7M turbine.
Looking at the average wind speed...
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Forum: Wind Power
10-04-15, 01:13 PM
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Replies: 18
Views: 28,664
meescha
I looked into turbines a while ago...
meescha
I looked into turbines a while ago then realised just how big i would need to build to make any useful power and abandoned the idea.
You need to find out the wind speeds then put...
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Forum: Appliances & Gadgets
08-23-15, 04:50 PM
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Replies: 23
Views: 21,829
I think windows 10 is heading in the right...
I think windows 10 is heading in the right direction after the abomination of win 8/8.1, but they should have waited until it was ready before releasing.
Using it on surface pro 3 and battery life...
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Forum: Lighting
07-25-15, 02:16 AM
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Replies: 11
Views: 14,190
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Forum: Conservation
06-01-15, 02:59 AM
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Replies: 8
Views: 7,939
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Forum: Conservation
05-29-15, 11:08 AM
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Replies: 8
Views: 7,939
Sounds like a nice system, Was the air much...
Sounds like a nice system, Was the air much cooler than the outside ambient temp ?
Our climate is 6 months heating and 1 to 2 months cooling.
The summer cooling is only part of why i want to...
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Forum: Conservation
05-29-15, 10:52 AM
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Replies: 8
Views: 7,939
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Forum: Conservation
05-28-15, 04:37 PM
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Replies: 8
Views: 7,939
Any experience with earth tubes.
Looking for advice on earth tubes. (pipes that run underground to collect/dump heat from outside air as it is drawn into the house)
We have a whole house MHRV system i installed during the...
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Forum: Geothermal & Heat Pumps
01-18-15, 09:20 AM
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Replies: 11
Views: 10,736
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Forum: Geothermal & Heat Pumps
01-17-15, 04:49 AM
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Replies: 11
Views: 10,736
Peltier elements can work well in the right...
Peltier elements can work well in the right application.
I used some for cooling an overclocked pc processor several years ago, had a separate pc power supply just to feed the peltier which cooled...
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Forum: Renovations & New Construction
12-18-14, 01:55 AM
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Replies: 36
Views: 21,648
90m2 currently lived in but open to the attic...
90m2 currently lived in but open to the attic which is mid conversion and not fully insulated yet so we are heating around 135m2.
My question with the passive haus localisation is how is this...
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Forum: Renovations & New Construction
12-16-14, 02:36 PM
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Replies: 36
Views: 21,648
The passive haus requirements do seem a bit...
The passive haus requirements do seem a bit strange, very tight heating/cooling limits but sloppy overall consumption limit.
We are well within the 120kwh/yr/m2 (around 70) and not far off the...
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