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how to base superheat eg81650 08-25-2007
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Posted by on August 26, 2007, 9:43 pm
>
>
> > There is no real true settings for superheat, you as tech
> > must find what is best for your type of condition you are
> > working on. example while 10 degree of superheat may be
> > ideal for AC system with 25 feet line it might not be for 150 feet,
> > you need to know what is more important to you efficiency of
> > your system or life of compressor don't forget that compressor
> > gets cooling from gas coming back to it, some time compromised
> > got to be taking, but if compressor can not stay cool then suction
> > liquid injection must be added, it all depend on you application
> > ideal superheat is always around 10-20 degree however it should
> > never be less then 10.
> > Tony
>
> You are so full-of-shit, it isn't funny.

The reason for asking this question is I'm working on a high rise
building that the engineer designed and that is why it requires a 150
ft to 200ft line. Also consider putting 10 SEER units adding
accumulator and a TXV.


Posted by Noon-Air on August 26, 2007, 9:54 pm

>>
>>
>> > There is no real true settings for superheat, you as tech
>> > must find what is best for your type of condition you are
>> > working on. example while 10 degree of superheat may be
>> > ideal for AC system with 25 feet line it might not be for 150 feet,
>> > you need to know what is more important to you efficiency of
>> > your system or life of compressor don't forget that compressor
>> > gets cooling from gas coming back to it, some time compromised
>> > got to be taking, but if compressor can not stay cool then suction
>> > liquid injection must be added, it all depend on you application
>> > ideal superheat is always around 10-20 degree however it should
>> > never be less then 10.
>> > Tony
>>
>> You are so full-of-shit, it isn't funny.
>
> The reason for asking this question is I'm working on a high rise
> building that the engineer designed and that is why it requires a 150
> ft to 200ft line. Also consider putting 10 SEER units adding
> accumulator and a TXV.
>

OK, so.....why not run an air cooled package chiller and some fan coil
units??? or does that make too much sense??



Posted by on August 26, 2007, 9:59 pm
On Sun, 26 Aug 2007 18:43:00 -0700, eg81650@gmail.com wrote:

>>
>>
>> > There is no real true settings for superheat, you as tech
>> > must find what is best for your type of condition you are
>> > working on. example while 10 degree of superheat may be
>> > ideal for AC system with 25 feet line it might not be for 150 feet,
>> > you need to know what is more important to you efficiency of
>> > your system or life of compressor don't forget that compressor
>> > gets cooling from gas coming back to it, some time compromised
>> > got to be taking, but if compressor can not stay cool then suction
>> > liquid injection must be added, it all depend on you application
>> > ideal superheat is always around 10-20 degree however it should
>> > never be less then 10.
>> > Tony
>>
>> You are so full-of-shit, it isn't funny.
>
>The reason for asking this question is I'm working on a high rise
>building that the engineer designed and that is why it requires a 150
>ft to 200ft line. Also consider putting 10 SEER units adding
>accumulator and a TXV.

        You need to study up on pipe sizing, and oil return.

        
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Posted by on August 26, 2007, 11:42 pm

> >
> >
> > > There is no real true settings for superheat, you as tech
> > > must find what is best for your type of condition you are
> > > working on. example while 10 degree of superheat may be
> > > ideal for AC system with 25 feet line it might not be for 150 feet,
> > > you need to know what is more important to you efficiency of
> > > your system or life of compressor don't forget that compressor
> > > gets cooling from gas coming back to it, some time compromised
> > > got to be taking, but if compressor can not stay cool then suction
> > > liquid injection must be added, it all depend on you application
> > > ideal superheat is always around 10-20 degree however it should
> > > never be less then 10.
> > > Tony
> >
> > You are so full-of-shit, it isn't funny.
>
> The reason for asking this question is I'm working on a high rise
> building that the engineer designed and that is why it requires a 150
> ft to 200ft line. Also consider putting 10 SEER units adding
> accumulator and a TXV.


Why not contact the manufacture's technical reps and ask them what they
require?

Have you ever dealt with SL traps, LL solenoid, etc?




Posted by Bill on August 27, 2007, 8:07 am
eg81650@gmail.com wrote:

> The reason for asking this question is I'm working on a high rise
> building that the engineer designed and that is why it requires a 150
> ft to 200ft line. Also consider putting 10 SEER units adding
> accumulator and a TXV.

Do you understand the pipe sizing? Sounds like you're guessing. What is
located where? Compressor at evaporator? Tonnage? Refrigerant?

Here's something to chew on. You might want to talk to someone local.

http://www.trane.com/commercial/library/vol274/en274.pdf

--
http://michellemalkin.com/

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