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if an A/C is low on freon, does it use more energy or not?

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if an A/C is low on freon, does it use more energy or not? wle 05-30-2008
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Posted by dpb on May 30, 2008, 1:32 pm
wle wrote:
> oh wait
> this makes it sound like it could be using less power..
...

But the efficiency isn't as good...don't you think if the overall
efficiency were better the manufacturer would design it to run there?

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Posted by DT on May 30, 2008, 4:49 pm
>
>wle wrote:
>> oh wait
>> this makes it sound like it could be using less power..
>...
>
>But the efficiency isn't as good...don't you think if the overall
>efficiency were better the manufacturer would design it to run there?


No, because when it is slightly undercharged, the suction pressure is less,
lowering the temperature at the evaporator. It runs quite cold for a while,
then ices over. It needs to run with the evaporator at the design temperature.

--
Dennis


Posted by dpb on May 30, 2008, 8:09 pm
DT wrote:
>> wle wrote:
>>> oh wait
>>> this makes it sound like it could be using less power..
>> ...
>>
>> But the efficiency isn't as good...don't you think if the overall
>> efficiency were better the manufacturer would design it to run there?
>
>
> No, because when it is slightly undercharged, the suction pressure is less,
> lowering the temperature at the evaporator. It runs quite cold for a while,
> then ices over. It needs to run with the evaporator at the design temperature.

That's what I was alluding to...

--



Posted by Stormin Mormon on May 31, 2008, 8:21 am
That's logic that stands the test of time. Well done, sir.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.


wle wrote:
> oh wait
> this makes it sound like it could be using less power..
...

But the efficiency isn't as good...don't you think if the overall
efficiency were better the manufacturer would design it to run there?

--



Posted by CJT on May 30, 2008, 10:09 pm
Mikepier wrote:
>
>>if an A/C is low on freon, does it use more energy or not?
>>
>>obviously it doesn;t get as cold, so it has to run longer
>>
>>but is the power demand the same, or less?
>>
>>is the total energy used the same, or less, or more?
>>
>>wle.
>
>
> From what I remember, I had my CAC charged with freon a few years ago
> while an Amprobe was hooked up to the compressor, and I remeber seeing
> the current draw go up slighty as the freon was being pumped in,
> probably due to the added pressure from the freon the compressor had
> to push.

It'll work harder while it's running, but not run as long.

--
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