How Do Hvac Systems Heat And Cool Large Buildings?


Have you ever wondered how the HVAC system in your office building functions? A common misconception is that these systems are only for heating. The truth is, HVAC systems do a lot more than just heat and cool an area. You’ll also get a brief history on when these types of systems were invented and why they’re so important to society today!


HVAC: How it started?


When was HVAC invented? The first forms of heating emerged around 400 BC where people built fires to warm their homes or halls. These types of methods weren’t very efficient because there was smoke and soot created by these open flames. They had to stay close to the fire source as well so this type of heating wasn’t good for large buildings such as temples and public spaces like town squares (Aristotle’s ancient “earth houses”).


Later, in the 1830s, Italian inventors created a furnace that used hot air as its heat source instead of an open flame. This was more efficient because it produced less smoke and soot compared to earlier forms of heating. The technology behind this invention became known as “forced-air” which is now still one form of HVAC systems today! Â In 1856, inventor Oliver Evans invented vaporization refrigeration machines for use with railroad cars where they would produce cool water or ice at different stations along their journey (This process is called “refrigeration”).


In 1901, Willis Carrier developed his own system to provide cooling by using steam coils inside buildings. He found out that if he pumped water vapor around these coils and the air was then cooled, it would provide cooling. What he created is now known as “air conditioning.”


Benefits of HVAC 


These systems are not only for heating. They provide a clean, comfortable environment with the following benefits:


    • They cool anything from an office building to your home by pulling air in through one side of the system and blowing it out onto the other side at a higher temperature. This causes some water vapor to condense into liquid. The condensed water then falls back down as cold moisture droplets that go back outside (this is called “humidification”). If people living or working inside feel too dry, they can also set their thermostat lower so less humidified air goes out which will make them more uncomfortable because there’s not enough humidity in the area – this process is called “dehumidification”
    • HVAC systems also provide heating by blowing warm air over coils that have a gas or electric flame underneath them. The heat is then transferred from the metal fins on these coils to the nearby room, making it feel warmer than in other parts of the building without HVAC units
    • The system removes excess moisture and odors from indoor spaces. This can be done through either filtering out smells with an activated charcoal filter or adding another chemical called “ozonizer” which breaks down any organic compounds into less harmful chemicals  (This process is known as “odor control”)
    • Air conditioners are used when people want cooler temperatures while too much humidity isn’t desired. Air conditioning cools the area by removing some of the heat from indoor air
    • Air conditioners also remove excess moisture because they are constantly removing hot, humid air and replacing it with cooler, dryer air. This process is called “dehumidification” which means that humidity levels drop in a room when an AC system is on.


When you have to stay warm, HVAC systems are a necessity. From the unit in your home that keeps it cool in the summer and warms it up during winter months to those found in large buildings where heating and cooling often require more than one system for optimal efficiency, these machines are essential pieces of modern life.

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