Tittle : Concept of Gas Pressure
Objective : To define the meaning of pressure that is related in this project
Pressure is determined by the flow of mass from a high pressure region to a
low pressure region. Pressure measurements are made on the fluid states--liquids
and gases. The pressure of water on a swimmer is more noticable.
What is pressure?
PRESSURE is a force exerted by the substance per unit area on another
substance. The pressure of a gas is the force that the gas exerts on the walls
of its container. Pressure is a property which determines the direction in which mass
flows.
Atmospheric pressure varies with height just as water pressure varies with
depth. As a swimmer dives deeper, the water pressure increases. As a mountain
climber ascends to higher altitudes, the atmospheric pressure decreases. His
body is compressed by a smaller amount of air above it. The atmospheric pressure
at 20,000 feet is only one-half of that at sea level because about half of the
entire atmosphere is below this elevation.
Atmospheric pressure at sea level can be expressed in terms of 14.7 pounds
per square inch. The pressure in car or bicycle tires is also measured in pounds
per square inches. A car should have 26-30 lb/sq.in. and bicycle tires
40-60/sq.in.
This concept can be used for this project where it need a high pressure from the container to turn the turbine to produce mechanical energy. A pressure gauge will be installed at the container so that the value can be seen and analyze.
No comments:
Post a Comment