Pressure - thermodynamics, Mechanical Engineering

Assignment Help:

Pressure - Thermodynamics:

While working in the system, thermodynamic medium exerts a force on boundaries of vessel in which it is kept. The vessel may be a container, or an engine cylinder having a piston etc. The exerted force F per unit area (A) on a surface that is normal to the force is called as intensity of pressure or simply pressure p. Therefore

P = F/A=   .g.h

It is expressed in Pascal (1 Pa = 1 Nm2), bar (1 bar = 105 Pa),

standard atmosphere (1 atm =1.0132 bar),or technical atmosphere (1 kg/cm2 or 1 atm).

1 atm means 1 atmospheric absolute.

The pressure is usually represented in following terms.

1.   Atmospheric pressure

2.   Gauge pressure

3.   Vacuum pressure

4.   Absolute pressure

 


Related Discussions:- Pressure - thermodynamics

Describe the type of facing and backing sand, Q. Describe the type of Facin...

Q. Describe the type of Facing and Backing sand? Facing sand. This sand is used directly next to the surface of the pattern and comes into contact with the molten metal when th

Make evaluation for the engine efficiency, (a) Differentiate between carnot...

(a) Differentiate between carnot Heat pump and carnot Heat engine. What is the basic cycle for a carnot Heat pump ? Explain it. (b) A reversible heat engine delivers 0.6 K at po

Stress strain curves, Stress Strai n Curves (Tension): When a bar or ...

Stress Strai n Curves (Tension): When a bar or specimen is subjected to a gradually increasing axial tensile load, the strains and stresses can be found out for number of loa

Principle of superposition, Principle of superposition: Explain the p...

Principle of superposition: Explain the principle of superposition. Sol.: A machine member is subjected to number of forces acting on its outer edges and also at some

Over-hanging and cantilever beam - support reaction , Over-Hanging and Cant...

Over-Hanging and Cantilever Beam: Over-Hanging Beam: The beams on which one end or both ends are overhang are called as overhanging beam. 3. Cantilever Beam:

Basic type of polymer - plastics, Q. Basic type of Polymer? Polymer can...

Q. Basic type of Polymer? Polymer can be divided into three broad divisions: plastics, fibers, and elastomers. Synthetic resins are usually referred to as plastics. Plastic der

Mp, one point cutting tool

one point cutting tool

Force analysis of spure gear (gear and pinion), how can analysis the force ...

how can analysis the force analysis of spur gear subjected to a force of 1818.65 newton on the shaft of the gear?

Explain the laws of thermodynamics, Explain the Laws of Thermodynamics ...

Explain the Laws of Thermodynamics Usually thermodynamics contains four laws; a. Zeroth law:  this law deals with thermal equilibrium and establishes an idea of temperature.

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