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

Shear Iosipescu Test, First Can I use this device to test concrete specimen...

First Can I use this device to test concrete specimen? I think the specimens sustain tensile strength with fixing the jaws! I want to know it is true or not?

Civil Engineering, I. A horizontal 500 lb force acts at a point D of cranks...

I. A horizontal 500 lb force acts at a point D of crankshaft AB which is held in static equilibrium by a twisting couple and by reactions at A and B. Knowing that the bearings are

Solid mensuration, the two sides of a triangle are 17cm and 28 cm long, and...

the two sides of a triangle are 17cm and 28 cm long, and the length of the median drawn to the third side is equal to 19.5. find the distance from an endpoint of this median to the

Advantages and disadvantage of using timber fenders, Question What are ...

Question What are advantages and disadvantage of using timber fenders , plastic fenders and rubber fenders ? Answer Timber fenders - They are low in power and a

Designing considerations for dowel bars, Question What are designing c...

Question What are designing considerations for dowel bars in joints of concrete carriageway? Answer Behaviour of dowel bars resembles that of piles in soils subject

Finite element analysis (bridge), I am a final year civil and structural st...

I am a final year civil and structural student and i need your help about my final year project. My Final Year Topic: Finite Element Analysis of a bridge using Sap2000 Aim: Fi

Dual frequency & colour fathometer - sounding/sensing device, Define Dual f...

Define Dual frequency and colour fathometer - Sounding/Sensing Devices? Dual Frequency and Colour Fathometers can be used to detect refill in the scoured area since more than o

Surveying, how to defined work from whole to the part

how to defined work from whole to the part

Distomat, definition,old&new modern&difference

definition,old&new modern&difference

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