Re: A/C In Very Hot Areas
It depends on what you are doing with it. Any conversion of energy has losses. If I get 100W of power from the engine... convert it to electricity... put it in the battery... convert it back to eletricity... I can't get 100W back.
When you can make a smaller engine do what a larger one can because of the torque advantage, and you have to move the vehicle and the weight of the engine, and the larger engine is less effient because it isn't necessary for it to be that large except during acceleration, you can make a gain in effiency because that can outweigh the losses, which the hybrid does. But most of that doesn't apply to an A/C. The engine is already moving the car... the A/C is just an add on. Thats all I'm trying to say... and apparently not doing a very good job of it. In any case...I'm going to let things drop at this point. We've had a pretty lively debate but I don't think we are going to change each others minds. |
Re: A/C In Very Hot Areas
Originally Posted by nitramjr
Why, or how, are all high speed railroads electric? :zip:
Electrical motors are really good at moving vehicles at low speeds, but very poor at high speeds |
Re: A/C In Very Hot Areas
An excerpt from a review of the MMH:
"It was more than 90 degrees outside, but the Mercury Mariner I was driving decided that it really didn’t need the help of its 2.3-liter, four-cylinder gasoline engine. Instead, the car’s nickel-metal hybrid batteries powered all the accessories, including the air conditioner and power windows, while I waited. In comfort." |
Re: A/C In Very Hot Areas
That article is incorrect, as most test-drivers are newspaper reporters, and not experienced mechanics or hybrid owners.
The FEH and MMH can only run Air Conditioning from the gas engine. The battery does not have nearly enough capacity for A/C. The reporter was confused since the FAN keeps blowing air during EV ( battery ) driving, but the air-conditioner is really off. But all this is invisible to the driver, until the air gradually warms up over time. ( 2-3 minutes before it becomes really noticeable ). -John |
Re: A/C In Very Hot Areas
I agree, that article is certainly a mistake.
If that reporter had been sitting in 110 degree weather they would have realized very quickly that the A/C does NOT blow cold air when the ICE is off. ~John |
Re: A/C In Very Hot Areas
Originally Posted by TeeSter
I think Chrysler did a prototype gas turbine car back in the 70's.
JG |
Re: A/C In Very Hot Areas
Originally Posted by gpsman1
That article is incorrect, as most test-drivers are newspaper reporters, and not experienced mechanics or hybrid owners.
I was only offering it to the group as one of those humorous "where do rumors like this start". |
Re: A/C In Very Hot Areas
Originally Posted by jginaz
I saw this car at the SAE show in Detroit in 1973. You could balance a nickel on the engine while it was running and rev it up without the nickle moving or falling off. Totally agree that a gas turbine based hybrid would be the way to go. Probably won't happen for the same reason Chrysler isn't making gas turbines today.
JG Its an interesting design problem... pretty cool really. If it gets any more play in this thread though we should start another :) |
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