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Offline Jean Giraud  
#1 Posted : 14 March 2019 15:18:03(UTC)
Jean Giraud


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Hello Alvaro,

Here are all the formulas stuff, from Mike SS 5346.
Red top2bottom SS 6179
RemToDo for volunters to doctor

Jean

IAPWS-IF97.sm (743kb) downloaded 25 time(s).
Offline Jean Giraud  
#2 Posted : 14 March 2019 16:00:50(UTC)
Jean Giraud


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Originally Posted by: Jean Giraud Go to Quoted Post
Hello Alvaro,

Here are all the formulas stuff, from Mike SS 5346.
Red top2bottom SS 6179
RemToDo for volunters to doctor


I did a quick check in the saturation region:
1. Remove unit system, otherwise Units don't match [like usual !!!]
2. By inspection, in saturation region the formulas aren't IAPWS-97
3. Thus my quick check p(125°C)=2.181 rather than 2.321
Quite not usable for Engineering Projects.
IMHO, useless attempting to doctor all those formulas.
Rather implement the original IAPWS in Smath.

Jean
Offline Jean Giraud  
#3 Posted : 15 March 2019 03:35:34(UTC)
Jean Giraud


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Originally Posted by: Jean Giraud Go to Quoted Post
Rather implement the original IAPWS in Smath.

... here is IAPWS-97 water saturation region
bar(°C) ... °C(bar)

So damned complicated that it does plot derivative(s)
Does not evaluate derivative(s) at point.

Inst_IAPWS region 1 QUICK.sm (21kb) downloaded 15 time(s).
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