The precision air conditioner is specially designed for the computer room, and its advantages are self-evident. But users still have doubts, so can ordinary household air conditioners be used in the computer room? Now let's go back to the characteristics and requirements of the computer room.

Thermal classification of the computer room

01 sensible heat

In the process of heating or cooling, the heat that needs to be absorbed or released when the temperature rises or falls without changing its original phase state is called sensible heat. It can make people have obvious changes in cold and heat, which can usually be measured with a thermometer. For example, the heat absorbed by raising water from 20 degrees Celsius to 80 degrees Celsius is called sensible heat.

02 latent heat

When an object absorbs or releases heat, its phase state changes (for example, a liquid becomes a gas), but the temperature does not change. This absorbed or released heat is called latent heat. Latent heat cannot be measured with a thermometer, nor can it be felt by the human body, but it can be calculated through experiments. For example, the heat absorbed by turning water at 100°C into steam at 100°C is called latent heat.

Total heat in the computer room = sensible heat + latent heat Sensible heat/total heat = sensible heat ratio

Heat sources and characteristics of the computer room

01 Sensible heat source

Equipment heat dissipation, lighting heat dissipation, solar radiant heat entering the room through external windows, heat entering the room through the enclosure structure, human body heat dissipation, and fresh air heat dissipation

02 Latent heat source

Human body heat dissipation of staff, heat dissipation of infiltrated air and fresh air ventilation

03Characteristics of computer room equipment

The calorific value of the equipment in the computer room is mainly in the form of sensible heat, and the sensible heat ratio is generally above 0.9. The humidity generated by this calorific heat is very small, which requires the refrigeration equipment to have sufficient ability to absorb sensible heat, that is, the sensible heat ratio should be the same as that of the computer room. The characteristics of the heat source match.

The impact of computer room environment on IT equipment

1. The temperature in the computer room cannot be kept constant

• Frequent changes in temperature cause thermal stress on electronic components

• The life of electronic components is greatly reduced

2. Local overheating

• The device suddenly shuts down

• Overheating damage

3. The humidity in the computer room is too high

• Generate condensation

• Electronic components are prone to short circuits

4. The humidity in the computer room is too low

• Generation of destructive static electricity

• Overheating damage

5. The cleanliness is not enough

• Dust accumulation on equipment, local overheating of components

• Conductive dust particles cause short circuits in equipment