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Air Conditioning Info.
- Thread starter atomic13
- Start date
electroken
Elio Addict
Assuming 100% efficiency (which exists nowhere), 746W = 1HP.
It will take somewhere around one horsepower for the alternator to source 50 amperes. You can run a lot of stuff on that.
It will take somewhere around one horsepower for the alternator to source 50 amperes. You can run a lot of stuff on that.
ElioDigger
Elio Addict
all our limos have electric AC in the rear. they put them in the trunk.
karl
Elio Addict
Electric heat is 100% efficient.
NSTG8R
Elio Addict
You are correct...with the exception of the 'small' amount of resistance (heat) in the wires going to the heat elements from the battery, which is negligble if the wires are sized correctly.
electroken
Elio Addict
It is, except the <100% efficient conversion of mechanical energy to electrical energy would be driving the heater.
Johnapool
Elio Addict
My old Previa van has a valve in the refrigerant line that opens when the rear fans are turned on. There is one for each side with separate speed controls. So no extra energy is used if you leave those fans off.
An older 4WD Toyota van I had also had a refrigerator big enough for a six-pack (for example) plus a little freezer that made ice cubes- built into the front of the center console, ran on the AC refrigerant.
I remember those vans! All round corners, pretty elegant as I recall!
I also remember the bypass valves having issues every now and then. The changes in temperature sometimes caused them to stick! By the time the owner got them to the shop, they'd work just fine, due to them warming back up! LOL. (I laugh now, but when the customer thinks you're just being mean, and I think the customer is eating funny mushrooms, it can get a bit intense.)o_O
I also remember the bypass valves having issues every now and then. The changes in temperature sometimes caused them to stick! By the time the owner got them to the shop, they'd work just fine, due to them warming back up! LOL. (I laugh now, but when the customer thinks you're just being mean, and I think the customer is eating funny mushrooms, it can get a bit intense.)o_O
RKing
Elio Addict
Good discussion, thanks for starting the thread. As for my self, all I know is I have yet to get 200,000 miles on anything without AC problems. On my personal ride, when it dies it stayes dead. Now on the wifey's it gets fixed pronto 
Now heat is a whole nuther matter, and I am looking forward to the small cabin heating up quickly !
Now heat is a whole nuther matter, and I am looking forward to the small cabin heating up quickly !
Other than the contact brushes, there's nothing but air between the armature (rotor) and the stator. (well, the bearings, but they're designed to turn) The "drag" is actually from the magnetic forces trying to come in contact with each other. Not unlike trying to get Wifey to drive past a Walmart without going in!!
