There are three types of
thermodynamic systems :
- Closed System
- Open System and
- Isolated System
In closed system, attention
is focused on a fixed mass. Energy in
the form of heat and work (The terms heat and work will be defined in the
chapter 2.) can cross the boundary of the system. But there is no mass flow across the
boundary. Hence, the possibility of
change in volume is always there in the closed systems.
In open system, both matter and energy can cross
the boundary. Here, the behaviour of a
fixed region in space called control volume
is investigated and hence, there is no change in volume. The surface of the control volume is known as
control surface.
A system that exchanges
neither energy nor matter with its surroundings is known as an isolated system.
