ENB205 Lecture Notes - Lecture 3: Capillary Action, Thermal Energy, Joule
Document Summary
Ru = universal gas constant = 8. 314 kj kmol-1k-1. Total energy is the sum of all energies of a system (e). Denoted by e, if given on a per mass basis. The forms of energy related to the molecular structure of a system and the degree of molecular activity are referred to as microscopic energy. The sum of all microscopic forms of energy is called the internal energy of a system (u) Denoted by, u, if given on a per mass basis. The microscopic energy of a system is related to motion and the influence of some external effects such as, What we think of systems heat content is actually. Thermal energy is the sensible and latent forms of internal energy. Heat only exists as energy crossing a system boundary through a temperature difference. All other forms of energy transfer are work. In systems that involve fluid flow we frequently encounter enthalpy, the combination of internal energy and flow energy.
