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Search: Posts Made By: Solar Mike
Forum: Appliances & Gadgets 12-24-15, 02:14 AM
Replies: 7
Views: 2,099
Posted By Solar Mike
I had a couple of these for testing, look exactly...

I had a couple of these for testing, look exactly the same, they will not handle 30 amps for any period of time; the tracks inside the unit and the current sensor and fuse mounts pcb area heat up to...
Forum: Lawn and Garden 09-10-15, 10:51 PM
Replies: 12
Views: 3,207
Posted By Solar Mike
Carbon Neutral

Sorry incorrect, when logs decompose or rot on the forest floor, their carbon is released by bacteria etc, just takes longer than burning it. Science behind this is called "The Carbon Cycle", used to...
Forum: Solar Power 07-14-14, 07:52 PM
Replies: 9
Views: 1,668
Posted By Solar Mike
I would connect a relay with its coil supplied by...

I would connect a relay with its coil supplied by the Output port, and use that to switch power direct from the battery to your gate motor. Place spike suppressor diode (IN4007 or similar) across the...
Forum: Solar Power 05-15-14, 06:51 AM
Replies: 39
Views: 7,981
Posted By Solar Mike
You can get DC SSR that have mosfets in them,...

You can get DC SSR that have mosfets in them, they still use the opto isolator and are specifically designed to switch DC sourced loads on and off, readily available on aliexpress for similar prices...
Forum: Solar Heating 02-11-12, 04:07 AM
Replies: 15
Views: 6,310
Posted By Solar Mike
Its been over a year since last playing with this...

Its been over a year since last playing with this stuff, so sorry no photo's, will do my best to describe:

The last heat pipes I was making for another project, required approx 50cc of liquid R22....
Forum: Solar Heating 02-09-12, 05:02 PM
Replies: 15
Views: 6,310
Posted By Solar Mike
I have a standard vacuum pump goes down < 50...

I have a standard vacuum pump goes down < 50 microns, standard multi way connection hub and hoses etc and a digital gauge so you can measure it with any accuracy.

As the amount of liquid gas in...
Forum: Solar Heating 02-09-12, 02:44 PM
Replies: 15
Views: 6,310
Posted By Solar Mike
I have made several longish heat pipes, one was...

I have made several longish heat pipes, one was 6m long made from 6mm (1/4") copper tubing, heating one end, the other was hot within seconds.
Similarly a heat pipe made from 15mm copper tube 5m...
Forum: Solar Heating 02-09-12, 04:11 AM
Replies: 15
Views: 6,310
Posted By Solar Mike
Well, if you want to circulate water other than...

Well, if you want to circulate water other than thermo-syphon and not use an electric pump, then there is a device called a pulse flow valve, see link PULSE FLOW VALVE FOR WET BACK | Trade Me...
Forum: The Billiards Room 01-31-12, 04:58 AM
Replies: 7
Views: 3,215
Posted By Solar Mike
Reminds me many years ago when NZ was in the...

Reminds me many years ago when NZ was in the throes of switching over from imperial to metric, a certain Govt science laboratory was getting a new lab built, the room length stainless steel bench top...
Forum: Appliances & Gadgets 09-29-11, 05:56 AM
Replies: 24
Views: 16,649
Posted By Solar Mike
I have a pellet stove wood burner, it has an...

I have a pellet stove wood burner, it has an external air tube to the fire box. This allows the air to be sourced external to the building; if the building is a mobile home or otherwise tightly...
Forum: Solar Heating 09-12-11, 06:04 AM
Replies: 4
Views: 1,760
Posted By Solar Mike
These are designed for low temperatures with...

These are designed for low temperatures with enough water flow to prevent any great temperature rise, thus making them very efficient and not requiring housing in a box with glazing etc.

The...
Forum: Solar Heating 09-06-11, 08:03 PM
Replies: 5
Views: 5,069
Posted By Solar Mike
Placing something inside your windows to capture...

Placing something inside your windows to capture extra heat will have no effect. The amount of energy entering the room via a window is fixed, that energy is absorbed by all areas in the room subject...
Forum: Solar Heating 08-22-11, 11:27 PM
Replies: 5
Views: 2,197
Posted By Solar Mike
Air heating panels should have sufficient air...

Air heating panels should have sufficient air flowing through them so the heated air is only a few degrees (say 10) above the incoming cold supply air. This gains max efficiency from the panel and is...
Forum: Solar Heating 07-17-11, 11:50 PM
Replies: 67
Views: 21,798
Posted By Solar Mike
Many of the newer design evac tube collectors use...

Many of the newer design evac tube collectors use a heat pipe to collect the heat from the fin and move it to the water in the header condenser section. This mechanism isnt as efficient st collecting...
Forum: Solar Heating 06-13-11, 11:14 PM
Replies: 14
Views: 11,503
Posted By Solar Mike
Hi Gary Your collectors will be fine, the...

Hi Gary

Your collectors will be fine, the silicon, acting as a thin flexible bonding agent once set will still allow some differential expansion whilst keeping the fins stuck to the risers,...
Forum: Solar Heating 06-13-11, 03:15 AM
Replies: 14
Views: 11,503
Posted By Solar Mike
Hi I have made many types of solar hot water...

Hi
I have made many types of solar hot water collectors over the past 5 years or so, generally I have found its easier to use thin copper foil (0.25mm thick) fins soldered to the risers than using...
Forum: Solar Power 03-09-11, 05:36 PM
Replies: 37
Views: 25,265
Posted By Solar Mike
This has happened here, except the cables were...

This has happened here, except the cables were live at the time securely mounted atop 30' poles, several kms were stolen. Dairy farmer went out to milk his cows at 5am and discovered milking shed had...
Forum: Solar Power 03-09-11, 04:58 AM
Replies: 37
Views: 25,265
Posted By Solar Mike
Re: electrocuting the linesman I was taught to...

Re: electrocuting the linesman
I was taught to put earthing clamps on the lines being worked on, thus any back feed or some idiot turning the system on would not kill off the workers. Dont know how...
Forum: Solar Heating 02-07-11, 02:50 AM
Replies: 14
Views: 4,365
Posted By Solar Mike
I have 8.5 sqm DIY solar hot water panels on the...

I have 8.5 sqm DIY solar hot water panels on the roof feeding a 300 liter cylinder, in summer there is a large excess of heat to get rid of. This is to get max heating in the winter months.
The...
Forum: Solar Heating 01-24-11, 05:21 PM
Replies: 4
Views: 4,957
Posted By Solar Mike
If the plate is roll corrugated aluminum or...

If the plate is roll corrugated aluminum or similar, painted flat black on both faces then as aluminum is a good thermal conductor both sides will be equally hot. Thus allow the air to flow over both...
Forum: Lighting 12-17-10, 02:51 PM
Replies: 16
Views: 7,785
Posted By Solar Mike
Reminds me of the time many years ago when doing...

Reminds me of the time many years ago when doing maintenance on a 10Kw HF radio transmitter, some other tech had left an AVO8 multimeter switched to its amps range grounding the HT capacitors rather...
Forum: Solar Power 10-19-10, 07:45 PM
Replies: 20
Views: 18,593
Posted By Solar Mike
I have 20 180 watt panels to install on a ground...

I have 20 180 watt panels to install on a ground mounted fixed frame outside my house, seems cooling them in the heat of summer will be very beneficial.

What I'm thinking of doing is getting 20...
Forum: Wind Power 10-15-10, 10:54 PM
Replies: 8
Views: 3,563
Posted By Solar Mike
I agree with other posters, Sam's will be lucky...

I agree with other posters, Sam's will be lucky to get 5% pa. of rated power output from such an installation, in other words an absolute waste of money. Perhaps if they had spent the same amount on...
Forum: Lighting 10-15-10, 03:39 AM
Replies: 12
Views: 5,923
Posted By Solar Mike
Can you ban the spammer kinging please

Can you ban the spammer kinging please
Forum: Solar Heating 09-25-10, 08:19 PM
Replies: 8
Views: 4,351
Posted By Solar Mike
In the winter, its all about total surface area...

In the winter, its all about total surface area to capture the heat, whilst vac tubes have less losses than a flat collector, they don't have a lot of surface area so you will need lots of them. Also...
Showing results 1 to 25 of 52

 
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