Thermodroid

Thermodynamic and thermophysical calculator.
Allows you to calculate thermodynamic properties:
- Temperature, Pressure, Volume, Vapour Fraction, Enthalpy, Entropy by Peng-Robinson (1975) EOS
- Liquid density by Yen-Woods eq.
- Heat of evaporation (EOS)
- Cp - heat capacity isobaric (EOS)
- Cv - heat capacity isochoric (EOS)
- sonic speed (EOS)
- adiabatic coefficient (EOS)
Thermophysical properties:
- Thermal conductivity (Stiel-Thodost eq. for gases, polynomial for liquid)
- Viscosity (Jossi-Stiel-Thodost eq. for gases, polynomial for liquid)
- Surface tension (Guggenheim-Katayama)
You can calculate thermodynamic characteristics of some apparatus:
- Heat exchanger
- Isoenthalpic valve
- Polytropic compressor
- Isothermal compressor (multistage)
- Polytropic expander

Extensive macro language (Description: http://sggdev.blogspot.com/2012/02/thermodroid-hd-macro-language.html, Samples: http://sggdev.blogspot.com/2012/03/thermodroid-hd-macro-calculation-of.html).
JavaScript support:
http://sggdev.blogspot.com/2012/10/javascript-support-for-thermodroid-and.html

You can save calculations on disk in html format.

Available elements for calculations:
methane, ethane, propane, i-butane, n-butane, n-pentane, i-pentane, n-hexane, n-heptane, n-octane, R134a, R11, R12, R13, R21, R22, R23, R507, nitrogen, ammonia, oxygen, argon, xenon, neon, H2O, acetone, F6S.
You can edit the elements or create a new element.

Integrated calculator with plotter - http://sggdev.blogspot.ru/2013/07/integrated-calculator-for-thermodroid.html
Can solve a system of non-linear equations. More information here: http://sggdev.blogspot.ru/2016/01/ansolver-can-solve-now-non-linear.html

Manual (rus)
https://drive.google.com/file/d/0B7L8HTLm9jZ7WENfbm1ITDJpRWs/view?usp=sharing