T/DZJN 10-2020 Active Group standards

T/DZJN 10-2020 Data center evaporative cooling air conditioning technology specifications

Publish Date: 2020-02-01 Implement Date: 2020-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/DZJN 10-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Library, archives, literature, and information work

ICS Name: The characteristics and design of machines, devices, and equipment

Publish Date: 2020-02-01

Implement Date: 2020-05-01

Scope

Main Technical Content: 3.1. Dry Area: Areas where the outdoor calculated wet-bulb temperature in summer is less than 23°C. 3.2. Medium Humidity Area: Areas where the outdoor calculated wet-bulb temperature in summer is greater than 23°C but less than 28°C. 3.3. High Humidity Area: Areas where the outdoor calculated wet-bulb temperature in summer is greater than 28°C. 3.4. Sub-Wet Bulb Temperature: The temperature of the airflow (or water flow) from evaporative cooling equipment, which lies between the outdoor air's wet-bulb temperature and dew point temperature. This state of temperature is defined as the sub-wet bulb temperature. 3.5. Direct Evaporative Cooling (DEC): A process where air and water come into direct contact, with the water evaporating to absorb latent heat and thereby cool the air. 3.6. Primary Air: The cooled air supplied to the computer room for cooling, also known as output air. 3.7. Secondary Air: The auxiliary air that comes into contact with water to evaporate it, thereby reducing the surface temperature of the heat exchanger to cool the primary air, also known as working air. 3.8. Indirect Evaporative Cooling (IEC): A process where the secondary air comes into direct contact with water to reduce its dry-bulb temperature through heat and moisture exchange, with the primary air being cooled by the secondary air via an indirect evaporative cooler. 3.9. Composite Evaporative Cooling: A process where the primary air is cooled through a combination of direct and indirect evaporative cooling. 3.10. Evaporative Condenser: A device that uses forced air circulation and the evaporation of cooling water to remove the condensation heat of the refrigerant. This process is called evaporative condensation. 3.11. Direct Evaporative Cooling Efficiency: The percentage difference between the dry-bulb temperature of the inlet and outlet air in the direct evaporative cooling section under test conditions and the dry-bulb and wet-bulb temperat