Eyring–Polanyi equation

It is an equation used in chemical kinetics to describe the variance of the rate of a chemical reaction with temperature.

The Eyring equation is used in the study of solution phase reactions and mixed phase reactions.  

Boltzmann's Constant

Boltzmann's Constant (k) is a relation of macroscopic and microscopic properties. It is a physical constant relating energy at the individual particle level with temperature.

Where R is ideal gas law constant.

Avogadro Number.

The accepted value in SI units is 1.38064852(79)×10−23 m2 kg s-2 K-1

It has same dimensions as that of Entropy. 

Codes and Standards

ASME Power Piping Code B 31.1 minimum requirement for Power and Auxiliary Service Piping. Code deals with piping greater than 100 Psig but the code is followed as standard for all condensate systems.