Forum: Appliances & Gadgets
12-22-23, 09:14 AM
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Replies: 159
Views: 336,722
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Forum: Appliances & Gadgets
12-22-23, 09:13 AM
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Replies: 159
Views: 336,722
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Forum: Solar Heating
12-15-23, 03:12 PM
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Replies: 29
Views: 96,765
As the temperature of the heat source increases...
As the temperature of the heat source increases the wavelength of the light( and heat ) gets shorter. As the sun is so hot the light easily passes through the glass. When it heats the black material...
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Forum: Appliances & Gadgets
12-12-23, 04:12 PM
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Replies: 12
Views: 86,593
The printer you linked to looks good for the...
The printer you linked to looks good for the price. You can download many 10's of 1000's of stl files from thingiverse. You can download the Creality slicer app and use it to create gcode - the...
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Forum: Appliances & Gadgets
12-12-23, 08:45 AM
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Replies: 5
Views: 55,766
The ones I mentioned say Noise:26dBA. And some...
The ones I mentioned say Noise:26dBA. And some 30mm ones say 15.92dBA which I can get 6 for GBP10. No idea what airflow they produce as it's not stated. Bigger fans would need to be tilted quite a...
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Forum: Appliances & Gadgets
12-12-23, 03:23 AM
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Replies: 5
Views: 55,766
Thanks Piwoslaw. it's as I thought. We do have...
Thanks Piwoslaw. it's as I thought. We do have the thin radiators. Because the air nearer the ceiling will be the hottest in the room then that's where the greatest Δt will be causing more heat loss...
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Forum: Appliances & Gadgets
12-11-23, 02:11 PM
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Replies: 5
Views: 55,766
Improving central heating
Like many people we have gas central heating. What I often wonder about is trying to make it work better. What I am thinking about is how the heat fills the room. So the heating comes on, the...
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Forum: Appliances & Gadgets
12-11-23, 10:11 AM
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Replies: 12
Views: 86,593
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Forum: Appliances & Gadgets
12-06-23, 03:50 PM
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Replies: 6
Views: 31,109
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Forum: Appliances & Gadgets
12-04-23, 04:08 PM
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Replies: 159
Views: 336,722
I can imagine why it was your best years:)
I...
I can imagine why it was your best years:)
I got interested in electronics when I was 12. Built a crystal set and listened to the local factory delivery drivers. Soon got roped in to mending radios...
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Forum: Appliances & Gadgets
12-04-23, 11:57 AM
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Replies: 159
Views: 336,722
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Forum: Appliances & Gadgets
12-03-23, 09:02 AM
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Replies: 159
Views: 336,722
Re: bicycle generator
I've been reading through this old thread and wondered what you might think of having lots of magnets around the wheel rim and coils placed close to them so the whole thing becomes the generator....
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Forum: Solar Power
01-04-23, 03:56 PM
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Replies: 1
Views: 16,469
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Forum: Solar Power
01-04-23, 03:35 PM
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Replies: 16
Views: 39,233
I know this is an old thread but now I am...
I know this is an old thread but now I am thinking I could use an IGBT controlled by a pwm signal generated by an arduino to control the rms voltage to a PC psu. my system uses a solis inverter and...
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Forum: Wind Power
03-30-22, 01:20 PM
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Replies: 7
Views: 21,023
Yes I have heard of them and seen it in a news...
Yes I have heard of them and seen it in a news item as well. I think they will probably work quite well. However we need to bear in mind that the wind speed is likely to be quite high having been...
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Forum: Wind Power
03-03-22, 06:50 AM
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Replies: 7
Views: 21,023
Thanks for your input. I live in a village in...
Thanks for your input. I live in a village in Lincolnshire and I have no area big enough to fix a large Vwat and that one looked very good. So now I wonder if I could build something like that but on...
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Forum: Wind Power
03-02-22, 03:30 AM
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Replies: 7
Views: 21,023
Power from turbulent wind
Has anyone come across a design for a generator which takes advantage of turbulent wind? What I have been told generally is that low level turbines don't work well because they rely on the air not...
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Forum: Solar Power
12-24-20, 02:03 AM
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Replies: 16
Views: 39,233
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Forum: Solar Power
12-24-20, 12:34 AM
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Replies: 16
Views: 39,233
I don't intend to rob myself. As I said in an...
I don't intend to rob myself. As I said in an earlier post my home is on higher ground but around it the whole area is a flood plain. In a flood the whole area including my home could be without...
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Forum: Solar Power
12-18-20, 04:02 PM
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Replies: 16
Views: 39,233
More about my panels
I have been thinking about this some more and have more ideas as to getting this to safely work.
Assuming the approx. 500 volt no load output of the panel strings is correct several things come to...
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Forum: Other Improvements
12-18-20, 03:14 AM
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Replies: 2
Views: 15,757
Well this link...
Well this link https://en.wikipedia.org/wiki/Earth_battery has information and it has lots of links too.
I get the feeling that little actual practical work is being done now and that they have...
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Forum: Other Improvements
12-17-20, 05:45 AM
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Replies: 2
Views: 15,757
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Forum: Solar Power
11-01-20, 03:52 AM
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Replies: 16
Views: 39,233
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Forum: Solar Power
10-31-20, 04:48 PM
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Replies: 17
Views: 59,411
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Forum: Solar Power
10-31-20, 12:17 PM
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Replies: 16
Views: 39,233
We moved back to England about 5 1/2 years ago....
We moved back to England about 5 1/2 years ago. The system had already been in place since early 2013 so we got a straight transfer from the last owners.
The cables from the panels look as if they...
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