Thermodynamic Concepts

Thermodynamic Concepts. Thermodynamics is the branch of physics that deals with the relationships between heat and other forms of energy. • Heat is energy that flows from one object to another due to a difference in temperature. Heat is measured in calories or joules. • Conversion factor between the two are 1 kcal = 4186 J • Heat is transferred from one body to another or from a body and the environment. • Three methods of heat transfer are: • Conduction • Convection • Radiation Image reference: Conduction • Conduction is a transfer of energy in the form of heat or electricity from on object to another when those objects come in contact with each other. • Heat transfers from the higher temperature object to the lower temperature object. • Heat is transferred due to successful collisions of electrons and atoms which creates a molecular agitation. Image reference: Convection • Convection is the process where heat is transferred by a bulk movement of heated fluids (liquids or gases) caused by molecular motion.