How Does an HVAC Unit Cool Down a Space?

What Exactly Is a Cooling Load?


A cooling load is a calculation determining how much heat needs to be removed from a building in order to keep the temperature consistent. It is one of the main things that is considered in the design phase of a building, in addition to the heating load, a calculation is determined on how much heat energy needs adding in maintain a stable temperature.


There are several factors which add heat to the interior of a structure. One factor is the temperature measured versus the temperature and the humidity measured together. High humidity will make low temperatures appear higher, which means a building in humid conditions comes with a higher cooling load, as more energy is needed to make a space more comfortable for the occupants. Humidity will also play a big role in the heating load.


The likes of equipment, people, and processes within a structure all generate heat, in addition to humidity and will impact on a cooling load. Buildings are not static which means their uses have to be considered when it comes to evaluating loads. The same can be said of the actual buildings, they too can contribute to heat energy. Windows, doors and the overall layout of a space all go to play a role with the internal temperature, as does the likes of shades, screens used to partially close off areas.


When it comes to considering the load, designers will attempt to evaluate the worst case scenarios. Looking at the temperature in the region, they will choose the highest temperatures and humidity recorded, and imagine what will happen inside when everything is operating simultaneously. This is done to come up with a rough estimate for the loads, allowing for the construction of a system which can cope with extreme temperatures. By doing this, engineers are assured their systems will not fail when used normally.


If you would like to know more about our services, then call Comfort Zone Complete Building Service of Springfield, MO today at (417) 890-8085.