This course introduces the basic concepts of thermodynamics, system and control volume concepts, properties, states, cycles, dimensions and units, properties of pure substances, phase change of pure substance, tables and charts of pure substances, state equations, ideal gas, the first law of thermodynamics, work and heat, internal energy, enthalpy, specific heat, the second law of thermodynamics, heat engines, heat pumps and refrigerators, efficiency of energy transformation, entropy, concept of entropy increase, reversible and irreversible processes, Carnot cycle, Power cycles (Carnot and Brayton) steam cycles, refrigeration cycles.