Concepts and definitions of thermodynamics, Civil Engineering


A system (often called a closed system) is any collectionof matter within a prescribed boundary, but no matter may enter or leave the system. 


1. That the boundary may be real or imaginary and theshape of the boundary can change E.g.

604_concept of thermodynamics.png

2167_concept of thermodynamics1.png

2. Different parts of the system may be at different temperatures, pressures and velocities and may contain different sorts of matter.

3. If a fluid is passing steadily through a reservoir so thatthe mass in the reservoir is constant, we still can notconsider the reservoir as a system. Matter is crossing the boundary.

1370_concept of thermodynamics2.png

4. A system only has two kinds of interaction with itssurroundings.   Work and Heat. 

1765_concept of thermodynamics3.png

Positive WORK is done by a system, during a given operation, when the sole effect external to the systemcould be reduced to the rise of a weight. 

1185_concept of thermodynamics4.png

Posted Date: 8/27/2012 8:59:13 AM | Location : United States

Related Discussions:- Concepts and definitions of thermodynamics, Assignment Help, Ask Question on Concepts and definitions of thermodynamics, Get Answer, Expert's Help, Concepts and definitions of thermodynamics Discussions

Write discussion on Concepts and definitions of thermodynamics
Your posts are moderated
Related Questions

Question How can rock sockets take up loads? Answer Load transfer mechanism is brief as follows- While a socketed basis is loaded, conflict is provided by together

A 160-HP Diesel engine (peak fuel consumption = 0.04-gal/HP-hr) hydraulic excavator operates on a cycle time of 20 seconds during a 50-min/hr.  During the filling of the bucket cyc

Shear lag in typical box-girder bridge For multiple-cell box girders, there are normally two arrangements. First one is that independent cells are connected by their top flang

Explain the Limitations of Rebound Hammer? The following characteristics of concrete can affect the correlation of the rebound number with the actual surface hardness and shoul

what is friction damper and there types?

Keywords related to water transportation: Oceanic Shipping: Shipping taking place in the oceans. Coastal Shipping: Shipping taking place along the coast line. Inlan

Concrete surround is generally adopted for rigid drainage pipes to resist high traffic loads (for instance under shallow covers) and to allow for using pipes with lower strength. F