Examples

Examples of Gauge Pressure

We explain the gauge pressure example. The gauge pressure is the pressure exerted by a gas, inside the closed container that contains it. It is what we find in car tires, latex party balloons and gas tanks for the home stove, and it is due to the following factors: gauge pressure example

  • Physical properties of gas
  • Container volume
  • Temperature

Pressure due to gas properties

The gauge pressure depends on the physical properties of the gas, which are as follows:

  • The particles of a gas are widely separated from each other.
  • Therefore, a gas covers the entire volume of the container.
  • Its particles travel at high speed and often collide with each other or with the internal walls of the container, generating pressure.
  • Depending on the mass of the gas inside, it will be how close they are. gauge pressure example

Pressure per vessel volume

The volume of the container delimits the space where the gas is found.

  • If it is small, the gas particles will tend to hit its inner walls more times . Thus the gauge pressure will be higher .
  • When the container is very large, the particles will walk more freely inside it, so the tapping will be less. The gauge pressure will be less .

This has a direct relationship with the amount of gas that is introduced:

  • A lot of gas in a small container (little volume): More gauge pressure.
  • Little gas in a very large container (a lot of Volume): Less gauge pressure.
  • More gas is introduced into a container: The gauge pressure increases.
  • Gas is drawn from a container: The gauge pressure is lowered.

Gauge pressure by temperature

Gauge pressure varies by gas temperature in the following ways:

  • When a gas is heated, its temperature will increase. The particles will take on more kinetic energy, which makes them move faster and collide more with each other and against the walls of the container. This leads to an increase in gauge pressure . gauge pressure example
  • When a gas cools, its temperature will decrease. The particles will lose kinetic energy, which makes them move more slowly and collide less with each other and with the walls of the container. This leads to a drop in gauge pressure.

How is gauge pressure measured?

Gauge pressure can be measured with devices called manometers. A pressure gauge is a kind of clock that is used to see how much pressure the gas delivers. It works in the following sequence of steps:

  1. It has a gas inlet, which leads to a metal arch.
  2. This arc will receive the force of the gas and will open.
  3. When the bow opens, it communicates that movement to a hand or needle. gauge pressure example
  4. The pressure gauge has a dial, like a watch face, which is printed with a scale with units of pressure. The needle will be placed on the pressure value, indicating it.
  5. If necessary, pressure units can be converted to others.

Gauge vacuum pressure

The vacuum gauge pressure is that less than atmospheric pressure. Occurs when gas is removed from the tank or tire, and kept closed. If the container is flexible, it will contract or crush, because its interior will not be balanced with the pressure from the outside. This pressure is also called suction pressure or vacuum pressure .

This pressure is applied in the food industry as an alternative method of preservation . The air is removed from the food packaging, which can be meats or some derivative product. The purpose is that there is no oxygen in which microorganisms can grow, and thus postpone the expiration date as much as possible.

Examples of gauge pressure

  1. The one that exerts the air inside a latex party balloon.
  2. The one exerted by helium gas inside a metallic balloon.
  3. The one that exerts the air inside a car tire.
  4. The one that exerts the air inside a manual pump (without escaping from there). gauge pressure example
  5. The one that exerts oxygen inside a medicinal tank.
  6. The one exerted by methane (CH 4 ) in a domestic tank.
  7. To which the compressed air is subjected inside a compressor.
  8. The one that exerts the air inside an inflatable figure.
  9. The one that exerts the air inside a ball or a ball.
  10. The one exerted by argon inside an industrial tank.
  11. The one exerted by neon inside an incandescent lamp.
  12. The one exerted by xenon inside a car headlight.
  13. The one exerted by hydrogen inside a tank.
  14. The one exerted by ammonia in a spherical safety container.
  15. The one that exerts water vapor at high temperature, inside a boiler. gauge pressure example
  16. The one that exerts the air inside an airship.
  17. The one exerted by Freon gas in the refrigerant system of a refrigerator.
  18. The one exerted by chlorofluorocarbons inside an aerosol container.
  19. The one exerted by nitrous oxide (N 2 O) in a tank, connected to a car.
  20. The one exerted by nitrogen (N 2 ) in a tank.

Examples of vacuum gauge pressure

  1. The one that uses the vacuum cleaner to take the dust from the home.
  2. The one left in a flat tire.
  3. The one that remains in a deflated but still closed balloon.
  4. The one that remains in an inflatable toy when the air is removed.
  5. The one in vacuum packed foods.
  6. The one in a deflated helium balloon.
  7. The one that is introduced to an evaporation equipment to suck the vapor that emerges.
  8. The one that is added to a straw to raise a liquid.
  9. The one that adds a centrifugal pump to a liquid to remove it from its initial deposit.
  10. The one that is put on the nozzle of a pipette to take a sample in the chemistry laboratory.

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