10/08/2023
HVAC SYSTEM
• Air conditioning is that branch of engineering science that deals with the conditioning of air, i.e. supplying and maintaining desirable internal atmospheric conditions for human comfort, irrespective of external conditions.
• In a broad sense, it also deals with the conditioning of air for industrial purposes food processing, storage of food and other materials.
Factors Affecting Comfort Air Conditioning.
1- Temperature of air.
2- Humidity of air.
3- Purity of air.
4- Motion of air.
1- Air Temperature:
Air temperature is a measure of how hot or cold the air is. It is the most commonly measured weather parameter. More specifically, temperature describes the kinetic energy, or energy of motion, of the gases that make up air. As gas molecules move more quickly, air temperature increases.
Temperature is usually expressed in degrees Fahrenheit or Celsius. 0 degrees Celsius is equal to 32 degrees Fahrenheit. Room temperature is typically considered to be 20-25 degrees Celsius (68-77 degrees Fahrenheit).
A more scientific way to describe temperature is in the standard international unit Kelvin. 0 degrees Kelvin is called absolute zero. It is the coldest temperature possible and is the point at which all molecular motion stops. It is approximately equal to -273 degrees Celsius and -460 degrees Fahrenheit.
How is Air Temperature measured? Temperature is usually expressed in degrees Fahrenheit or Celsius. 0 degrees Celsius is equal to 32 degrees Fahrenheit. Room temperature is typically considered to be 20-25 degrees.
2- Air Humidity:
This is the best way to control the humidity in a room is to run a dehumidifier to remove excess moisture from the air, especially if that humidity level needs to be maintained regularly
The purity of air refers to the level of contamination or pollutants present in the Earth's atmosphere. Clean and pure air is essential for the health and well-being of all living organisms, including humans. Air quality is determined by the concentration of various pollutants and particulate matter in the air.
3- Purity of air
The motion of air, also known as atmospheric circulation, refers to the movement of air masses on a global and local scale within Earth's atmosphere. This motion is driven by a combination of factors, including the Earth's rotation, solar radiation, temperature gradients, and the influence of landforms and bodies of water. Understanding the motion of air is crucial for predicting weather patterns, climate dynamics, and the distribution of heat and moisture around the planet.
3- Motion of air.
The motion of air, also known as atmospheric circulation, refers to the movement of air masses on a global and local scale within Earth's atmosphere. This motion is driven by a combination of factors, including the Earth's rotation, solar radiation, temperature gradients, and the influence of landforms and bodies of water. Understanding the motion of air is crucial for predicting weather patterns, climate dynamics, and the distribution of heat and moisture around the planet.
Tawfiq Eid Shaaran.
