Further details on ellf.zip. This program calculates the radiated power, integrated between given upper and lower wavelength limits, by a Planck black body at given temperature. Units are degrees Kelvin, watts, and meters. Current values of Planck and other thermodynamic constants are used. C program to compute thermodynamic properties of water in the liquid or vapor phase.
Independent variables are the temperature and either the specific volume or the pressure.
Outputs are the pressure or specific volume and the specific internal energy, specific enthalpy, specific entropy, and saturation pressure. It also provides a formula, distributed by Honeywell, for water vapor pressure over ice that closely matches the data in Keenan's steam table. Executable and Cygnus GNU C DLL library for dict version 1.5.0.