- Thread starter winchman
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puffernutter
Puffernutter
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I had a 24v one in my Land Rover (they tend to be cheaper than the 12v versions) and had a split charger with a relay arrangement to charge at 12v in parallel, but when I needed it for the heater it reconfigured to 24v (but didn't charge). They took so little current it worked out well!
PN
PN
puffernutter
Puffernutter
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If anyone has any going at a good/fair price, I'm interested as I could do with one for the dog van to keep them warm at times!
Cheers
PN
Cheers
PN
Ditto Puffernutter, if you come across any spares let me know as I need one for the machine shop (an possibly rig one in the camper van later).
Cheers,
MM
GW8IZR
Gone.
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you are misunderstanding me then, I said a typical figure used .. which it is.
(edit) I hadn't finished but the new dog pressed the keyboard and it got posted...
The continuation was going to be - but that is only needed with the poor insulation of a typical car. The fan / matrix can shift the heat easily enough provided there is somewhere to go which is typically outside the car through the windows.
the littel ebashers that rock up in sprayers ect i think are rted to draw 40w @ 12v and have a heat output of 1800w
a heater matrix in a car can easly dump 6kw of heat in the right conditons i've known it on a really cold night to keep the engine tempriture pinned down notcable to the point if you dropped the fan settings the temp gadue would rise after a bit, most automotive heater matrixes are in the 6kw region from what i've heard and read
a heater matrix in a car can easly dump 6kw of heat in the right conditons i've known it on a really cold night to keep the engine tempriture pinned down notcable to the point if you dropped the fan settings the temp gadue would rise after a bit, most automotive heater matrixes are in the 6kw region from what i've heard and read
theres a few litterd about but you have to work out how to contoll them as the std controll boxes well they probaly got cut off
winchman
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Controllers like this one
https://www.ebay.co.uk/itm/2KW-12V-...134196?hash=item5903a37874:g:L9AAAOSwBRVaglvZ
I will take some pics of mine next week
https://www.ebay.co.uk/itm/2KW-12V-...134196?hash=item5903a37874:g:L9AAAOSwBRVaglvZ
I will take some pics of mine next week
normspanners
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No, cars have breather valves at the rear and under the floor to let air out constantly you should be under one in the pit when the heater is blowing you get a loverly warm blast through pipes in the floor etc but the main escape are through the rear breather vent flaps YOU have no control over VVVV they just blow open and let out all that damp air from your lungs etc but are usually hidden in bumpers C posts etc etc there is a considerable fresh air flow throughout the car
GW8IZR
Gone.
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No, cars have breather valves at the rear and under the floor to let air out constantly you should be under one in the pit when the heater is blowing you get a loverly warm blast through pipes in the floor etc but the main escape are through the rear breather vent flaps YOU have no control over VVVV they just blow open and let out all that damp air from your lungs etc but are usually hidden in bumpers C posts etc etc there is a considerable fresh air flow throughout the car
Yes. The manufacturers are spending the budget of a small country economy developing car windows to retain heat.....
normspanners
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As You mentioned the fan and shifting heat you where obviously meaning the air would travel out through open windows ,I was making the point that the air travels out with no control from us, now if you could make glass that the air traveled one way ie out but not in at the same time as retaining the heat then that would be expensive methinks,
The thing is with the electric cars they will still have to have massive amount of ventilation in winter with 5 people in them so heating will consume as much/more than the motors but they are now having to have water cooled motors so there will be heat recovery from that I suppose but only when driving unless it is stored ---- more problems to overcome.
normspanners
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oh yes it is, dont forget you have a massive fan blowing through it, for example does the fan in your home 3kw heater make half the noise of your car fan on full---- NO that is because it is only moving a modest amount of air to cool the element of 3KW Now if you had a car heater fan blowing through the 3kw element you would hardly feel any heat at all , because the 3kw would be lost in the masses of air, you have close to boiling water passing through a small rad getting masses of air blown through it to efficiently remove that heat and drop the boiling water to 50 c nearly half, A heater on full can keep an engine cool --------sometimes too cool in fact, many times the actual cooling rad is not circulating hardly any water in minus C conditions.
So much so that diesels have electric heater elements in the cooling system to warm the water as well as the engine as below with 3 heater plugs in the water . Bmw diesels have their own electric coolant heater units.
