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how to base superheat eg81650 08-25-2007
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Posted by Tony on August 26, 2007, 2:36 pm

>
>>
>> Does anyone out there know how to base superheat on 150ft+ line set?
>
> Superheat is superheat. Length of lineset doesn't change the math.
>
Generally speaking you right however all manufacture do not
comply with refrigeration suggested formulas and you might
find that are some far out of suggested superheats as for my
line of work superheats can vary from 5 to 150 degrees but
that is another story. what's important in superheat that you
keep compressor happy rest of it is all secondary
Tony



Posted by U-Hate-Me on August 27, 2007, 5:15 am

>>
>> Superheat is superheat. Length of lineset doesn't change the math.
>>
> Generally speaking you right however all manufacture do not
> comply with refrigeration suggested formulas and you might
> find that are some far out of suggested superheats

Well of course........Wait. Huh?



> as for my
> line of work superheats can vary from 5 to 150 degrees but
> that is another story. what's important in superheat that you
> keep compressor happy rest of it is all secondary


150 degrees superheat Lol



Posted by Bill on August 27, 2007, 7:49 am
> > line of work superheats can vary from 5 to 150 degrees but
> > that is another story. what's important in superheat that you
> > keep compressor happy rest of it is all secondary
>
>
> 150 degrees superheat Lol

Yep
Low temp work.

--
http://michellemalkin.com/

Posted by Zyp on August 27, 2007, 4:02 pm
Tony wrote:
>>
>>>
>>> Does anyone out there know how to base superheat on 150ft+ line set?
>>
>> Superheat is superheat. Length of lineset doesn't change the math.
>>
> Generally speaking you right however all manufacture do not
> comply with refrigeration suggested formulas and you might
> find that are some far out of suggested superheats as for my
> line of work superheats can vary from 5 to 150 degrees but
> that is another story. what's important in superheat that you
> keep compressor happy rest of it is all secondary
> Tony

""superheats can vary from 5 to 150 degrees ""

Really? Isn't 150º F a little high? [Let me see, maximum discharge
temperature & compression ratio comes to mind.]

BTW: on TXV sub-cooling *is* the correct charge method.

--
Zyp



Posted by Bill on August 27, 2007, 4:45 pm
> ""superheats can vary from 5 to 150 degrees ""
>
> Really? Isn't 150º F a little high? [Let me see, maximum discharge
> temperature & compression ratio comes to mind.]
http://www.refrigerants.dupont.com/Suva/en_US/pdf/h65923.pdf

> BTW: on TXV sub-cooling *is* the correct charge method.

How many methods are there?

--
http://michellemalkin.com/

Page 6 of 12       < 1 2 3 > last >>
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