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

Heat transfer, Three mechanisms: 1) Conduction - occurs in solids and st...

Three mechanisms: 1) Conduction - occurs in solids and stationary fluids (liquids or gases). 2) Convection - occurs in fluids. Change in the buoyancy of the fluid due to its

Surveying, describe the two fundermental purposes of surveying

describe the two fundermental purposes of surveying

Determine the interdependent phases of investigation, Determine the interde...

Determine the interdependent phases of investigation The following are the interdependent phases of investigation: i)  Stratigraphical survey, ii) Physical survey, and

Enumerate the term - failure due to crushing of concrete, Enumerate the ter...

Enumerate the term - Failure Due to Crushing of Concrete Over reinforced pre-stressed concrete members, provided with a large amount of pre-stressing steel or relatively small

Define major ions present in the water, Define Major Ions present in the wa...

Define Major Ions present in the water  Cations:  Calcium, Magnesium, sodium, potassium Anions: Bicorabonate, sulfate, chloride Other ions present: Iron. Manganese, Fluor

Explain the rippl diagram or mass diagram, Explain the Rippl Diagram or Mas...

Explain the Rippl Diagram or Mass Diagram For a potable water reservoir, it is the simultaneous plots of the cumulative inflow and cumulative water consumption/demand, termed "

Explain interim inspection - underwater inspection of bridge, Explain the I...

Explain the Interim inspection - underwater inspection of bridge An interim inspection is an inspection scheduled at the discretion of the engineer. An interim inspection is us

Why nautical mile is different from statute mile, One nautical mile is desc...

One nautical mile is described by one latitude minute of arc (there are 60 like minutes to a degree). This equals 1852 meters, and roughly (but coincidentally) 2000 yards or 6000 f

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