Thermodynamics is the science that studies the processes of energy conversion from one form to another. Most of these changes are performed to obtain energy in the shape of heat or work (which may be mechanical or electrical). The power source used is mostly fuel, in which energy is trapped in the form of chemical bonds between atoms. Release and subsequent use of this energy can be made using a heat engine (usually working in the cycle of heat—internal combustion engines, turbines) or fuel cell. In the case of a heat engine, the chemical energy of fuel is released as heat and mechanical energy produced through other processes. Mechanical energy is then converted into electricity using electro-magnetic devices (generators).
KeywordsFuel Cell Chemical Equilibrium Rate Coefficient Molar Enthalpy Heat Engine
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