1st law of thermo Study guides, Class notes & Summaries

Brief and simple introduction to Heat transfer. Includes the following: a few definitions, comparison between Thermodynamics and Heat Transfer, 1st law of Thermo, properties that depend on temperature and conversion factors for temperature units.

Shows the first law of thermodynamics, total energy generation rate for a volume, heat flux and the three ways in which heat is transferred. First law (a.k.a. energy balance) is expressed two ways; first, as a change from an initial time to a final time and second, on a per unit time basis (derivative form). Mentions the three ways heat is naturally transferred between materials.

There are two in-class problems; 1. Given a pond and its rate of heat generation per unit mass, the rate of heat generation for the whole pond is found (in variable form). 2. For a cylindrical container holding radioactive waste, heat is generated at a given rate per unit mass (indicated by e). Expressions for the heat generation rate of the whole container and the temperature at its outer surface are found. The in-class notes review the equations for convection and radiation. Also, a couple sou...