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Thread: Multistage psychometrics
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27-05-2006, 10:36 AM #1
Multistage psychometrics
Hi,
Got to prepare a training course on multistage systems. I need a link or something if anyone has got one to PH diagrams and psychometrics for multistage systems.
Any help is always welcome, because I can't find any suitable material in my own books and notes.
Cheers
James
a problem shared is a problem halved
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29-05-2006, 10:07 AM #2
Re: Multistage psychometrics
you mean multistage system PH chart. I don't know there's psychrometrics for multistage system. pls confirm what you mean. I'd like to send you some ASHRAE handbook material
rgds
LCI hear...I forget;I see...I remember;I do...I understand
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29-05-2006, 10:19 AM #3
Re: Multistage psychometrics
PH diagrams would be very useful. I have to say that I haven't seen a psychometric chart for one either (dry and wet bulb etc).
Thanks
Jamesa problem shared is a problem halved
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29-05-2006, 11:19 PM #4
Re: Multistage psychometrics
psychrometrics for multistage systems
Here is a link where you can purchase the charts in SI for various elevations and temperature ranges.
http://resourcecenter.ashrae.org/sto...oginid=8165980
...because I can't find any suitable material in my own books
Are you looking for complete PH diagrams with the cycles already done? These are fairly rare other than a simple single or two stage diagram.
Why not do them yourself?
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30-05-2006, 12:27 AM #5
Re: Multistage psychometrics
http://www.coolit.co.za/mollierchart/index.htm
The picture on the homepage is typical of a multistage pressure enthalpy (Mollier) diagram. The software is for sale that can do the calculations, and I suppose redraw the PH chart with the new values you put in.
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30-05-2006, 06:42 AM #6
Re: Multistage psychometrics
James,
Just woke up this morning and we both (My wife and I) read your mail you send us.
Coming back to your question, why not use Coolpack for it? It has that option to calculate cascade systems and you can export the drawings and tables.
There's some literatrure in the ASHRAE books... do you have those?
And perhaps in the book 'Industrial Refrigeration' from Stoecker.
And in a thermodynamic book I have, I think thermodynamics for engineers, there's some theoretical explanaition of the system.
Could this be usefull or are you looking for something more specific?
PeterIt's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
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10-09-2008, 01:39 PM #7
Re: Multistage psychometrics
Why does everyone call psychrometrics PSYCOmetrics??
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10-09-2008, 11:16 PM #8
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12-09-2008, 03:51 PM #9