2002 Corolla Turning the AC on when defrosting
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From: Clive on 29 Jul 2010 05:19 In message <4c509354$0$74751$afc38c87(a)read01.usenet4all.se>, =?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> writes >I don't notice much of a difference between running the AC and driving at >highway speeds, or driving at highway speeds with "260 air conditioning". >I guess the amount of drag with the windows open equals the load placed on >the engine with the compressor running. A test has been done over here on A/C and it turns out that below 40mph it's more economic to keep the window open, but above 40mph it's more economic to use the A/C because having the window open breaks up the smooth flow of air over the car causing more drag. -- Clive
From: Clive on 29 Jul 2010 05:31 In message <i2q45l$gna$1(a)news.eternal-september.org>, Jeff Strickland <crwlrjeff(a)yahoo.com> writes >If the truck is adjusting itself properly, there will be no effect on the >tach when the compressor is engaged, or not. Or the effect will be so small >as to be unnoticable by looking at the tach. Both my cars idle at about 750 to 800rpm depending on temperature, but switching on the A/C increases that to 1000rpm in both cases. -- Clive
From: C. E. White on 29 Jul 2010 07:34 "JoeSpareBedroom" <newstrash(a)frontiernet.net> wrote in message news:J304o.38606$KT3.37541(a)newsfe13.iad... > "C. E. White" <cewhite3(a)mindspring.com> wrote in message > news:i2q1t5$9ok$1(a)news.eternal-september.org... >> >> "JoeSpareBedroom" <newstrash(a)frontiernet.net> wrote in message >> news:Ue%3o.38604$KT3.31863(a)newsfe13.iad... >> >>> Beats me. All I know is what I observe, Ed: The sound, and the effect on >>> the RPMs, which is identical to what happens in summer. >> >> Well the next time the tempearture is down around zero F, turn on the >> A/C - if the compressor enagages you'll know it becasue of the squealing >> belt sound (if you are lucky) or the grinding sound of a compressor >> disentegrating (if you are unlucky). > > I guess the compressor's been disintegrating since the day I bought the > truck, brand new. I wish you lived close to me so I could bet you $5 the compressor doesn't run (at least till the car is warmed up) on a day where the temperature is below freezing. Ed
From: JoeSpareBedroom on 29 Jul 2010 07:53 "Clive" <clive(a)yewbank.demon.co.uk> wrote in message news:IcjIHgFJqUUMFwrJ(a)yewbank.demon.co.uk... > In message <i2q45l$gna$1(a)news.eternal-september.org>, Jeff Strickland > <crwlrjeff(a)yahoo.com> writes >>If the truck is adjusting itself properly, there will be no effect on the >>tach when the compressor is engaged, or not. Or the effect will be so >>small >>as to be unnoticable by looking at the tach. > Both my cars idle at about 750 to 800rpm depending on temperature, but > switching on the A/C increases that to 1000rpm in both cases. > -- > Clive > According to Strickland: 1) Your observation is a hallucination. 2) Automobile air conditioning is not relevant in a discussion about automobile air conditioning.
From: Jeff Strickland on 29 Jul 2010 10:50
"Jane Galt" <Jane_G(a)gulch.xyz> wrote in message news:Xns9DC3E747AAB38JaneGgulchxyz(a)216.196.97.142... > "Jeff Strickland" <crwlrjeff(a)yahoo.com> wrote : > >> >> "C. E. White" <cewhite3(a)mindspring.com> wrote in message >> news:i2pv67$tj1$1(a)news.eternal-september.org... >>> >>> "Jeff Strickland" <crwlrjeff(a)yahoo.com> wrote in message >>> news:i2peh1$ird$1(a)news.eternal-september.org... >>>> >>>> "Jane Galt" <Jane_G(a)gulch.xyz> wrote in message >>> >>>>> My gas bill will notice it, and it puts wear on the compressor. >>>> >>>> You gas consumption from the AC isn't worth the discussion. Less than >>>> a few miles on a tank of gas. >>> >>> For years I have kept a gas mileage log book. I've never been able to >>> find a difference in mileage based on the time of the year >>> (Winter/Fall/Spring versus summer). This implies to me, the cost to run >>> the A/C is negligible. >>> >>> As for wear, running the compressor occasionally is actually a good >>> thing - it assures the internal components and seals stay lubricated. >>> >> >> I agree. There can't be more of an affect than few miles on an entire >> tank of gas that comes from using the AC. > > A couple of mpg? > Not a couple mpg, a couple of tenths of mpg. I said, "miles on an entire tank of gas." Let's say you can go 320 miles on a tank of gas without the AC on, you would go 310 miles with the AC on. These numbers are ones I pulled out of my butt to illustrate the point that the AC is not a significant burden on fuel mileage, as it once was. |