Definition:
Thermodynamics is the study of the effect of work , heat and energy on a system.It also includes the conservation of these energies in terms of heat and mechanical work and their relationship with properties of the system.
Thermodynamic System:
The thermodynamic system may be defined as a definite area or space where some thermodynamic process takes places.There are three mains types of system: open system, closed system and isolated system. All these have been described below:
1. Closed System:
This is a system of fixed mass whose boundaries are determined by the space of the working substance occupied in it. in a closed system, heat and work cross the boundaries of the system but there is no change of the original mass of the working substance
2. Open System:
In this system, the working substance crosses the boundary of the system. The heat andwork may also cross the boundary.
3. Isolated System:
It is a system of fixed mass and no heat or work cross its boundary.
References:
- Mechanical Engineering(Conventional and Objective type), S. Chand & Company Ltd, RK Rajput and JK Gupta, 1984
