Bidvertiser

Loading...

THERMODYNAMICS

Thermodynamics is concerned with  the study of the interaction of heat and work energies in systems and their surroundings, and the processes which bring about a change of state in such systems.

A SYSTEM
A thermodynamic system is a region in space that is clearly defined and which contains matter that is of interest and under investigation or study. It must be noted that the region of space in the system is not necessarily a constant volume because the system can change position and shape.

THE SYSTEM BOUNDARY
The boundary of a system is the real or imaginary envelope that encloses the system.

THE SURROUNDING
The surrounding to the system is the region of space external or outside of the system, but which shares a common boundary with the region.

TYPES OF SYSTEM

CLOSED SYSTEM
A closed system is a region in which the matter contained in it has constant mass, and where mass or matter can neither go into, or out of the system. However, heat and work energies can go in or out of a closed system.

AN OPEN SYSTEM
A thermodynamic system is said to be an open system when matter or mass can leave or enter the system through at least one opening at boundary. Thus an open system will have at least one opening in its boundary where matter may leave or enter the system, and because of this matter contained in the system is not necessarily constant.

AN ISOLATED SYSTEM
An isolated system in a special case of a closed  system. An isolated system does not interact with its surrounding in any way. Thus an isolated system does not allow matter in or out of the system and in addition, it does not allow heat and work interactions across its boundary.

SYSTEM EQUILIBRIUM
A system is said to be in equilibrium when it is capable of spontaneous change and when it is in complete balance with the surroundings. Another condition that must be satisfied for the system to be in equilibrium is that any property of the system must have a single value at its equilibrium state. On the whole, we can say a system is in equilibrium if no changes can occur in the state of the system without the aid of an external stimulus. Thus we can test if a system is on equilibrium by isolating it and observing whether any change in its state occurs. An equilibrium state of a system is a very important and useful condition because an equilibrium is that any change in its state occurs. An equilibrium state of a system is very important and useful conditions because an equilibrium state is subject to precise mathematical description and as such, single values of properties of the system can be obtained at this state.

AN ISOLATED SYSTEM
An isolated is one that neither allows matter in or out of the system and addition does not allow heat or work energies to enter or leave the system. From the obove description, an isolated system is also  a closed system. In order words, only a closed system may be isolated system.

THERMODYNAMIC PROPERTY
A  thermodynamic property is a characteristic of a system which has value, and is measurable directly or indirectly and more importantly, it is used to define the state of a thermodynamic system.

ENGINEERING 561058390583397025

Post a Comment

emo-but-icon

Home item

Bidvertiser

MOST RECENT POSTS