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Old 06-04-2007, 05:44 PM   #1
Jim Caldwell
 
Default Energy savings from increasing my A/C EER rating?

Our current 220 volt 23,000 BTU/HR home air conditioner has an EER of 8.5,
and I would like to know what the energy savings would be if we replaced it
with a unit of the same BTU/HR but with a 9.6 EER. The current A/C makes our
power meter literally spin like a top every time the compressor kicks in. Do
you have to double the EER in order to halve the power consumption?


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Old 06-04-2007, 05:44 PM   #2
Nick Pine
 
Default Re: Energy savings from increasing my A/C EER rating?

beachcooler <beachcooler@earthlink.net> wrote:

>Jim Caldwell wrote:


>> Our current 220 volt 23,000 BTU/HR home air conditioner has an EER of 8.5,
>> and I would like to know what the energy savings would be if we replaced it
>> with a unit of the same BTU/HR but with a 9.6 EER. The current A/C makes our
>> power meter literally spin like a top every time the compressor kicks in. Do
>> you have to double the EER in order to halve the power consumption?


Yes.

>My exact calculations are at the office, but suffice it to say it is an
>exponential relationship.


And the exponent is one.

>http://www.energy-miser.com


Are you really in the heating and cooling business? :-)

Nick

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Old 06-04-2007, 05:44 PM   #3
pjm@see_my_sig_for_address.com
 
Default Re: Energy savings from increasing my A/C EER rating?

On 9 Jul 2003 10:04:20 -0400, nick@acadia.ee.vill.edu (Nick Pine)
wrote:

>beachcooler <beachcooler@earthlink.net> wrote:
>
>>Jim Caldwell wrote:

>
>>> Our current 220 volt 23,000 BTU/HR home air conditioner has an EER of 8.5,
>>> and I would like to know what the energy savings would be if we replaced it
>>> with a unit of the same BTU/HR but with a 9.6 EER. The current A/C makes our
>>> power meter literally spin like a top every time the compressor kicks in. Do
>>> you have to double the EER in order to halve the power consumption?

>
>Yes.
>
>>My exact calculations are at the office, but suffice it to say it is an
>>exponential relationship.

>
>And the exponent is one.
>
>>http://www.energy-miser.com

>
>Are you really in the heating and cooling business? :-)
>
>Nick


He doesn't know his bunnies from a hole in the ground :-)



Paul ( pjm @ pobox . com ) - remove spaces to email me
>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~ ~>~~>~~


Coming soon - PMTherm version 2.0 !! http://pmilligan.net/pmtherm.htm
Free superheat charts for 38 Ref's online at http://pmilligan.net/pmtherm/
My personal site is at http://www.pmilligan.net ,
featuring free HVAC, psychrometric, stock market, and other software
http://helpthecritters.com/ is my domain for helping critters
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Old 06-04-2007, 05:44 PM   #4
Eric
 
Default Re: Energy savings from increasing my A/C EER rating?

nick@acadia.ee.vill.edu (Nick Pine) wrote in message news:<beh7d4$frc@acadia.ee.vill.edu>...
> beachcooler <beachcooler@earthlink.net> wrote:
>
> >Jim Caldwell wrote:

>
> >> Our current 220 volt 23,000 BTU/HR home air conditioner has an EER of 8.5,
> >> and I would like to know what the energy savings would be if we replaced it
> >> with a unit of the same BTU/HR but with a 9.6 EER. The current A/C makes our
> >> power meter literally spin like a top every time the compressor kicks in. Do
> >> you have to double the EER in order to halve the power consumption?

>
> Yes.
>
> >My exact calculations are at the office, but suffice it to say it is an
> >exponential relationship.

>
> And the exponent is one.
>
> >http://www.energy-miser.com

>
> Are you really in the heating and cooling business? :-)
>
> Nick


what are your general impressions of geothermal cooling systems, thermal experts?

Eric
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Old 06-04-2007, 05:45 PM   #5
CM
 
Default Re: Energy savings from geothermal?

> what are your general impressions of geothermal cooling systems,
> thermal experts?


Although it has considerable promise, there is hype and a lot of
misunderstanding on how it works.

Some people get the notion that the ground is mystically maintained at
a constant temperature no matter what, when it is simply a matter of a
very large thermal mass and some insulation provided by the soil
above. It is a thermal reservoir. You put heat into the ground, the
temperature will go up. Draw heat out and the temperature will go
down.

If you want to use it for cooling only, you must remove the excess
heat from the ground when it is cold - at night, or during winter.

If you want to use it for heating only, you must replace the heat that
was removed by some means, or you will eventually end up with a
non-functioning permafrost ground.

If you want to use it for both summer cooling and winter heating, you
must balance the thermal load to prevent the ground from icing up or
overheating. Or, use separate areas of ground for heating and cooling.

CM


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Old 06-04-2007, 05:45 PM   #6
Robert Thompson
 
Default Re: Energy savings from increasing my A/C EER rating?


<pjm@see_my_sig_for_address.com> wrote in message
news:h38pgvophidk4onj7b5lemhpe3emp99oom@4ax.com...
> On 9 Jul 2003 13:50:33 -0700, cosolar@yahoo.com (Eric) wrote:
>
> >nick@acadia.ee.vill.edu (Nick Pine) wrote in message

news:<beh7d4$frc@acadia.ee.vill.edu>...
> >> beachcooler <beachcooler@earthlink.net> wrote:
> >>
> >> >Jim Caldwell wrote:
> >>
> >> >> Our current 220 volt 23,000 BTU/HR home air conditioner has an EER

of 8.5,
> >> >> and I would like to know what the energy savings would be if we

replaced it
> >> >> with a unit of the same BTU/HR but with a 9.6 EER. The current A/C

makes our
> >> >> power meter literally spin like a top every time the compressor

kicks in. Do
> >> >> you have to double the EER in order to halve the power consumption?
> >>
> >> Yes.
> >>
> >> >My exact calculations are at the office, but suffice it to say it is

an
> >> >exponential relationship.
> >>
> >> And the exponent is one.
> >>
> >> >http://www.energy-miser.com
> >>
> >> Are you really in the heating and cooling business? :-)
> >>
> >> Nick

> >
> >what are your general impressions of geothermal cooling systems, thermal

experts?
> >
> >Eric

>
> I dig them :-)
>


That sounds like a Well Ground-ed opinion.










>
>
> Paul ( pjm @ pobox . com ) - remove spaces to email me
> >~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~~>~ ~>~~>~~

>
> Coming soon - PMTherm version 2.0 !! http://pmilligan.net/pmtherm.htm
> Free superheat charts for 38 Ref's online at http://pmilligan.net/pmtherm/
> My personal site is at http://www.pmilligan.net ,
> featuring free HVAC, psychrometric, stock market, and other software
> http://helpthecritters.com/ is my domain for helping critters



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