08-17-2019, 09:54 PM
|
#1 (permalink)
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,588 Times in 1,555 Posts
|
How much power does AC use? Dyno test
Sikky has dyno tested his Lexus ISF with and without air conditioning on. Spoiler alert, he measured a pretty consistent 9 horsepower through the entire RPM range. That is quite a bit of power!
|
|
|
The Following 2 Users Say Thank You to Daox For This Useful Post:
|
|
Today
|
|
|
Other popular topics in this forum...
|
|
|
08-17-2019, 11:23 PM
|
#2 (permalink)
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,267
Thanks: 273
Thanked 3,569 Times in 2,833 Posts
|
My leaf uses like 1 to 2 Hp.
It is a lexus so it could have a 3 ton A/C.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
The Following 2 Users Say Thank You to oil pan 4 For This Useful Post:
|
|
08-18-2019, 11:55 AM
|
#3 (permalink)
|
Master EcoModder
Join Date: Jul 2015
Location: Louisiana
Posts: 361
Thanks: 275
Thanked 132 Times in 102 Posts
|
Are there any data showing how much gasoline it takes to run a 1 HP load?
Or a 10 HP load?
Wouldn't it be a straight linear trend of fuel amount required per HP load?
Of course, it would have to be measured on the same engine so that differences in efficiency do not influence the fuel used.
__________________
|
|
|
08-18-2019, 12:00 PM
|
#4 (permalink)
|
Master EcoModder
Join Date: Sep 2012
Location: Victoria, BC
Posts: 1,747
Thanks: 75
Thanked 577 Times in 426 Posts
|
Quote:
Originally Posted by MeteorGray
Are there any data showing how much gasoline it takes to run a 1 HP load?
Or a 10 HP load?
Wouldn't it be a straight linear trend of fuel amount required per HP load?
Of course, it would have to be measured on the same engine so that differences in efficiency do not influence the fuel used.
|
It would vary depending on where in the engine's efficiency range it is, which is RPM and throttle dependant. (Ie the engine might be 20% efficient at 3200 rpm at 50% throttle, but only 10% efficient at 2400 rpm and 25% throttle)
|
|
|
The Following User Says Thank You to Stubby79 For This Useful Post:
|
|
08-18-2019, 12:46 PM
|
#5 (permalink)
|
Master EcoModder
Join Date: Feb 2014
Location: Missoula, MT
Posts: 2,668
Thanks: 305
Thanked 1,187 Times in 813 Posts
|
Cars actually have huge A/C systems. You could run a big 13,500 btu RV A/C on 1800 watts if you could get past the 2800 watt starting current. That is less than 3 hp. My 1800 running watt Westinghouse generator will run full load for probably 8 hours continuous on 1 gallon of gas. So 1/8 gal per hour. I would hope a built in accessory drive on a cay would do better than that.
|
|
|
08-18-2019, 02:24 PM
|
#6 (permalink)
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,267
Thanks: 273
Thanked 3,569 Times in 2,833 Posts
|
Quote:
Originally Posted by MeteorGray
Are there any data showing how much gasoline it takes to run a 1 HP load?
Or a 10 HP load?
Wouldn't it be a straight linear trend of fuel amount required per HP load?
Of course, it would have to be measured on the same engine so that differences in efficiency do not influence the fuel used.
|
Yea, yes and yes. Generally speaking once you account for pumping losses.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
|