Electronic equipments are very sensitive. Most electronic equipments are kept in an Air conditioned room to protect them from high humidity and over heating.
Air Conditioning is different from air cooling and refrigeration. In refrigeration and air cooling, only the temperature is lowered. In Air conditioning, in addition to cooling the air, the humidity, oxygen level and many other things are taken into account. Air conditioners don't just cool the air, they suck out the moisture present in the air. This is what we see in the form of water droplets dripping out of the air conditioning machines. This reduces the humidity of air and makes the air cool and dry.
There are certain parameters which should be maintained to keep electronic equipments working. The humidity of the surrounding air and the temperature of the electronic board should be taken great care.
Humidity is nothing but the amount of water vapour suspended in air. High humidity may corrode the printed wires and open circuit the connections. In a very humid place, a sudden change in temperature can cause condensation inside the board which may short circuit the connections. In humid places, people wrap their laptops with towels while coming out of an AC room to prevent condensation which may kill the equipment.
On the other hand, the humidity can't be too low. This may lead to static electricity which can be bad for circuit boards. Static discharges may reach high voltages and may spoil the equipment. The safe humidity level for electronics is between 50 % to 80%.
Any electronic equipment gets heated up over time. It has to be cooled efficiently to protect the electronic equipment from overheating. Overheating may lead to melting of connections or run away of transistors.
This is why electronic equipments like computers, servers, networking devices and automation equipments are placed in an air conditioned room.
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