Mark Mikofski

- use class - store constants at class level - create package using @folder

this is sorely lacking.

[IAPWS](www.iapws.org) met in 2009 and 2011 and have since released some new guidelines, specifically for thermal conductivity of ordinary water this should be incorporated

**Current** units are units used in IAPWS, SI for everything except specific heat, enthalpy and pressure **Proposed** let user set units **Comments** this would be easy in a class, but...

**Current** Most properties and derivatives are geared toward p-h as inputs **Proposed** provide properties as functions of alternate inputs, _e.g. :_ p-T, p-s, h-s, etc.

**Current** there is no way to calculate pressure of a given state, e.g. given v and T what is p? **Proposed** provide reverse calculations for pressure. **Comments** Not sure if...

**Current** cp is available as cp_ph, but not cp_pT, and cv is not available at all. cp_pT is available but by region therefore the user is required to check the...

**Current** User must derive entropy from other properties _e.g.:_ ds = dh/T - vdP/T (or ds = du/T + Pdv/T) **Proposed Provide functions for calculation of entropy and entropy derivatives...

add Zivi slip ratio

1

**Current** There are 2 sets of functions, one for slip and one without. **Proposed** Combine both sets with a switch to let user set slip ratio.

**Current** Files need to be added to path or copied to folders as needed. **Proposed** If +folder package is used, then if +folder is on path, e.g. in MATLAB working...