Heating ang cooling in mechanical manufaturing
DATA CENTER COOLING SYSTEM
The data center is an important infrastructure for the information industry. Nowadays the energy consumption of data center is getting higher along with the high density, high power server in use.
About 40% of data center energy consumption is from the cooling system. While meeting the cooling requirements of the equipment room, to reduce the energy consumption of the cooling system, natural cooling technology is currently widely recognized as a technology with better energy saving effect in improving the energy efficiency.
Categories of natural cooling
Natural cooling is mainly divided into two categories: wind side natural cooling and water side natural cooling.
Wind side natural cooling
Direct type: direct outdoor cold air into the room, direct evaporative cooling
Indirect type: indirect outdoor cold air into the room, through heat exchanger (dry/wet), heat pipe, and recycle refrigerant
Water side natural coolingDirect type: Direct use of outdoor low temperature water (sea water, lake water, river water) for cooling
Indirect type: Cooling tower cooling water direct cooling, cooling tower + plate heat exchanger, closed cooling tower, dry cooler
The computer machine room runs all year round under constant temperature and humidity conditions. The equipment room maintains a temperature of 18-24 degrees throughout the year. The plate heat exchangers cool the cooling water of the equipment room with water or water containing ethylene glycol.
Considering the plate heat exchanger efficiency, temperature difference between the two sides of the heat exchanger is 1-1.5°C. For example, the one side supply/ return water temperature is 13.513.5/18.5°C, the other side water is 21/15°C. Pressure drop is ≤50kPa.
评论
发表评论