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Home > Archive > Heating and air conditioning > February 2006 > Re: Fixed old heat pump in my house
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Re: Fixed old heat pump in my house
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| Murdentech 2006-02-16, 10:21 am |
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"Bubba >" <<ReMoVe likealake@iname.com> wrote in message
news:jsmuu1tensauhhsi7lhkql861ppiuteo3j@4ax.com...
> At 20 degrees outside, Im getting a 20 degree temp rise through my
> system...................just like the charts tell me I should.
> Bubba
All better now, bad outdoor piston. Hard to find too. Took one from an old
evap coil, put it in and now getting at least a 3.0 COP
Getting about 30º TD inside at 55º outside with a 250 head... not too bad at
11 amps.
Talked to Bob Coffey about it. (met him on another job). He said to expect
at least 3 to 1 on the heat side and about an 8 on cooling for a 1988
Carrier... and he confirmed they didn't have a true suction port on the
older units. ( I put one in this one while I had it open )
I find it ironic that even a 13 SEER HP still only has a 3.5 COP.
Wondering if HP technology is not keeping up, or if HPs have always been the
more efficient technology.
Jeff
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| On Thu, 16 Feb 2006 14:04:32 GMT, "Murdentech" <j. murden @ insight
bb.com> wrote:
>
>"Bubba >" <<ReMoVe likealake@iname.com> wrote in message
>news:jsmuu1tensauhhsi7lhkql861ppiuteo3j@4ax.com...
>
>
>All better now, bad outdoor piston. Hard to find too. Took one from an old
>evap coil, put it in and now getting at least a 3.0 COP
>
>Getting about 30º TD inside at 55º outside with a 250 head... not too bad at
>11 amps.
>
Not bad.........I guess?? As a comparison, my 14 SEER at 55 outside
does:
31.7 TD, 9.8 amps, 3.76 COP at a 246psi head
Bubba
>Talked to Bob Coffey about it. (met him on another job). He said to expect
>at least 3 to 1 on the heat side and about an 8 on cooling for a 1988
>Carrier... and he confirmed they didn't have a true suction port on the
>older units. ( I put one in this one while I had it open )
>
>I find it ironic that even a 13 SEER HP still only has a 3.5 COP.
>
>Wondering if HP technology is not keeping up, or if HPs have always been the
>more efficient technology.
>
>Jeff
>
>
>
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