Basic Concepts of Thermodynamics (CHE61404)

Basic Concepts of Thermodynamics (CHE61404) basic thermodynamics concepts - Answer- state, system, state postulate, equilibrium, process and cycle thermodynamics - Answer- study of the flow and transformation of energy in the universe, and it's ability to cause changes first law of thermodynamics - Answer- Energy can be transferred and transformed, but it cannot be created or destroyed. second law of thermodynamics - Answer- energy has quality and quantity, and processes occur in the direction of decreasing quality applications of thermodynamics - Answer- - body temperature: blood in the body generates heat which is then transferred to the environment, where physical, physiological and behavioral adaptations take place to conserve / reduce body heat for comfort - household applications: HVAC, refrigeration, pressure cooker, water heater, shower and etc. - transportation: automotive engines, rockets, jet engines, solar collectors and etc. two main types of dimensions - Answer- primary and secondary primary dimensions (fundamental) - Answer- properties which are measured (e.g. mass, length, time, temperature) secondary dimensions (derived) - Answer- properties which are derived from primary dimensions (e.g. velocity, energy, volume, momentum) dimensional homogeneity - Answer- all terms in the equation must add up to the same unit, allowing us to check formulas and derive formulas) specific volume - Answer- volume per unit mass specific weight - Answer- the weight of a unit volume of a substance pressure - Answer- - a normal force exerted by a unit per area - 3 types of pressure: gage, absolute and vacuum temperature - Answer- physical quantity; a measure of hotness and coldness on a numerical scale