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Thread: few questions
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28-10-2005, 07:10 AM #1
few questions
hi
I need DX coil software badly which can calculate 3/8" and 5/8" DX coils
also i have few questions first is
- Can we use 1/4" sight glass in liquid line that is 3/4"
- We are trying to use DANFOSS EXP VALVE but their ends are of steel and we have refrigerant piping of copper. how is brazing to be done.
Awaitin quick reply
[B]Note[/B] I have PSYCHOMETRIC ASHRAE CHART registered version 15 MB. those who have limit of in their inbox i can mail them
Regards
Engineer Ali Abbasi
Our nose is our personal air-conditioning system: it warms cold air, cools hot air and filters impurities
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28-10-2005, 07:41 AM #2
Re: few questions
Hi,
about your questions:
1. Yes you can, but don't put the sight glass in the 3/4" line, but put in a small line parallel to the major liquid line. (see attachment)
2. What kind of TEV is it? Is it a TUA (which are in stainless steel but have bi-metal connections for fast and easy soldering to cupper)?
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28-10-2005, 07:43 AM #3
Re: few questions
There is a software from USA Coils which they give with thier catalouge (Free). You can design DX coils with it but I found that it is not very reliable.
If you use 1/4" sight glass in a 3/4" liquid line then you will end up with a large pressure drop across the sight glass which will vaporize some of the liquid.Even Einstein Asked Questions
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28-10-2005, 02:18 PM #4
Re: few questions
I have PSYCHOMETRIC ASHRAE CHART registered version 15 MB. those who have limit of in their inbox i can mail them
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16-07-2006, 11:23 AM #5
Re: few questions
Hi,
I am fresh HVAC engineer.i have PSYCHOMETRIC chart old one (from my college book).pl. fwd the PSYCHOMETRIC ASHRAE CHART to my mail selva_sraj@hotmail.com
thanking you.
regards
selvaraj
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16-07-2006, 11:28 AM #6
Re: few questions
There is an appropriate brazing material for steel to copper lap joint. Ask your supplier for details. Please note that TUBE TXVs have copper plating on the inside of steel.
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