Pressure

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pressure : 

pressure

Slide 3: 

Pressure:is force per unit area Pressure

Slide 4: 

It is usually more convenient to use pressure rather than force to describe the influences upon fluid behavior. The standard unit for pressure is the Pascal, which is a Newton per square meter. For an object sitting on a surface, the force pressing on the surface is the weight of the object, but in different orientations it might have a different area in contact with the surface and therefore exert a different pressure.

Types of Pressures : 

Atmospheric Gauge, Vacuum, Vapour, etc. Types of Pressures

How to measure pressure ? : 

Pressure measuring instruments :- Barometer. Millimeters and Centimeters. Simple Manometer, Differential Manometer, Inverted manometer, Enlarged End Manometer - Numerical problems How to measure pressure ?

Barometer : 

Barometer

Manometer : 

The most common choices are mercury (Hg) and water Manometer

Application : 

1. Diagram of a hydraulic press: Application

Slide 10: 

The increase in pressure is the same on the two sides, a small force Fl at the left produces a much greater force F2 at the right. A vehicle undergoing repair is supported by a hydraulic lift in a garage.

2. Compressor : 

2. Compressor

5.How can water cut through steel? : 

5.How can water cut through steel? A water jet is a tool used in machine shops to cut metal parts with a (very) high-pressure stream of water. As amazing as it sounds, if you get water flowing fast enough it can actually cut metal.

6.Steam boiler : 

It work by low pressure and present high temperature 6.Steam boiler

7.Pressure vessels : 

7.Pressure vessels

Vacuum pressure : 

Vacuum pressure

Slide 22: 

Reference: Special Thanks for professor :Medhat shawky. Special Thanks for : Mostafa Hamdy.

Slide 23: 

Very special thanks for Dr. Rasha sakr