Urgent need for detailed computer room engineering design (ups, precision air conditioning)! ! ! ! thank you

When the environmental equipment in the computer room is running, the heat dissipation is large and concentrated, and the moisture dissipation is very small. That is, 95% of the heat dissipation of the equipment in the computer room is sensible heat, with large heat, small humidity and large heat-humidity ratio. In this case, the air treatment can be approximated as an isothermal cooling process. In this case, the enthalpy difference is small, and large air volume is needed to eliminate the residual heat.

In addition, because computer equipment and network equipment run 24 hours a day, the air conditioning system needs to run uninterrupted all year round.

At the same time, according to the characteristics of the enclosure structure of the computer room (mainly the wall, top surface and ground, including floors, orientations, external walls, internal walls and wall materials, door and window types, single and double-layer structures and gaps, and heat dissipation), the heating value of personnel, the heating value of lighting lamps, fresh air load and other factors, the required cooling capacity of the computer room is calculated, so as to select the capacity of air conditioning.

Air environment design parameters of data center computer room:

The temperature is 23 2℃ in summer and 20 2℃ in winter.

Summer humidity 55 10% winter humidity 55 10%

Cleanliness granularity ≥0.5μm, number ≤ 18000 grains/decimeter 3.

Humidity change rate ≤5℃/ hour

The environment of computer room is realized by air conditioning. However, to ensure the cleanliness of the computer room, the following conditions are required:

First, the enclosure structure of the computer room should be sealed clean.

Second, the computer room should maintain positive pressure to prevent dirty air erosion. Fresh air can be purified in two stages, namely, primary efficiency filter and secondary efficiency filter, which greatly improves the air quality input into the computer room.

Thirdly, the air conditioner is equipped with a neutral filter screen, which is replaced regularly to ensure that the air is continuously purified in the circulation of the computer room.

The scheme design can ensure that the air cleanliness meets the requirements of national standards.