Concepts and definitions of thermodynamics, Civil Engineering

Assignment Help:

System

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

Note

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


Related Discussions:- Concepts and definitions of thermodynamics

Harbours - water transportation, Harbours: Types of Harbours ...

Harbours: Types of Harbours There are two types of harbours, viz : (a) Natural harbour, which is protected from storms and waves by the natural configuration of t

Digit of cells for concrete box girder bridges, Question How does an engine...

Question How does an engineer determine digit of cells for concrete box girder bridges ? Answer If depth of a box girder bridge exceeds 1/6 or 1/5 of bridge width, then it is o

Explain gap survey and adjustment of gap, Q. Explain Gap Survey and adjustm...

Q. Explain Gap Survey and adjustment of Gap? Gap survey and rectification of gaps is to be carried out, in stretches where track develops excessive creep jammed joints, sun kin

Bending moment , The internal forces in any cross-section of a symmetric me...

The internal forces in any cross-section of a symmetric member in pure bending are equivalent toa couple M The moment of the couple is referred to as the bending moment in the s

How can rock sockets take up loads, Question How can rock sockets take ...

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

Fly levelling, what is meant by fly levelling and when it is carried out ?

what is meant by fly levelling and when it is carried out ?

Analysis of the two stage construction, A County is planning to build a new...

A County is planning to build a new roadway connector in the rapidly developing area of the county. The road can be built at a reduced capacity now for $30 million and can be widen

Steel truss 15 m span, types of truss of 15 m cantilever with 1000 kg on fr...

types of truss of 15 m cantilever with 1000 kg on free end. May be steel or any lightest material aluminium anodized truss. thanks

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd