If a closed system undergoes an isochoric process, the thermodynamic work for this process is always zero. A closed system undergoes a process inside a rigid container. During this process, the thermodynamic work can only be zero. If a closed system undergoes an adiabatic process, the thermodynamic work for this process is always zero.

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Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.