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 (742 KiB) downloaded 115 time(s).

Wrote

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

Wrote

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 (20 KiB) downloaded 93 time(s).