Atmospheric pressure and gauge pressure - thermodynamics, Mechanical Engineering

Assignment Help:

Atmospheric Pressure (Patm):

It is pressure exerted by atmospheric air on any surface. It can be measured by a barometer. The standard values of it are;

1 Patm = 760 mm of Hg that is column or height of mercury

=   .g.h. = 13.6 × 103  × 9.81 × 760/1000

= 101.325 kN/m2  = 101.325 kPa

= 1.01325 bar

when density of mercury is taken as 13.595 kg/m3  and acceleration because of gravity as 9.8066 m/s2

Gauge Pressure (Pgauge):

It is the pressure of fluid contained in closed vessel. It is always greater than atmospheric pressure. It is measured by an instrument called as pressure gauge (like Bourden's pressure gauge). The gauge measures pressure of fluid (liquid and gas) flowing through pipe or duct, boiler etc. irrespective of atmospheric pressure.

 


Related Discussions:- Atmospheric pressure and gauge pressure - thermodynamics

Motorcycle servicing , In motorcycle servicing we studied about various ser...

In motorcycle servicing we studied about various service tips for motorcycle servicing. These steps will ensure proper servicing of motorcycle and as a result customers will trust

Predictive control algorithms, Predictive Control Algorithms Escaping S...

Predictive Control Algorithms Escaping Scheduling Errors via Partial Look-ahead Since previously mentioned above, the heuristic priority rules that are normally utilized in

Arc blow, ARC BLOW In certain cases depending upon where the return pa...

ARC BLOW In certain cases depending upon where the return path connections are given for the arc current, the arc may be deflected towards a direction of weaker electro magnet

What is the velocity of the crosshead - crank, What is the velocity of the ...

What is the velocity of the crosshead - crank: In the slider crank mechanism shown in Figure, the crank is rotating clockwise at 120 revolution/minute. What is the velocity of

3 Games in Supply Chain, I have three assignment in Supply Chain Engineerin...

I have three assignment in Supply Chain Engineering. It is a Games assignment in: 1- Beer Game 2000 words. 2- Risk Pooling Game, Object of this game is to rewrite properly correct

Explain rate pressure product, Q. Explain Rate Pressure Product? The sy...

Q. Explain Rate Pressure Product? The systolic blood pressure is multiplied by the heart rate to provide the double product or modified fusion time index. On presence of an obs

Calculate the probable wall thickness of the tank, The background for the o...

The background for the oil storage tank failure is as follows: the tank involved was a four million gallon circular tank that was built in 1940 for Ashland Oil Company in Cleveland

Calculate the period of vibration, (a) Show energy method and Rayleigh's me...

(a) Show energy method and Rayleigh's method for single degree of freedom system. Also discuss its application. (b) A sphere of diameter D floats half submerged in water. If the

Simulate the compression test, This assignment will simulate large deformat...

This assignment will simulate large deformations (nonlinear geometry) and occurrence of necking and buckling due to static tensile and compressive loading of a given elastic-plasti

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