Shanghai Airko

Cooling condition correction factor

Correction under different wind speeds, inlet air temperature, and water temperature conditions:

Actual cooling capacity = Cooling capacity from Table 1 × K1 × K3
Actual water flow = Water flow from Table 1 × K1 × K3
Actual water resistance = Water resistance from Table 1 × K2 × K4

Example: Selecting YG-20 air conditioner, the cooling coil face wind speed is 2.5 m/s. According to Table 1, the cooling capacity is 150.8 kW, water flow is 26.21 m³/h, and water resistance is 14.07 kPa. Determine the actual cooling capacity, water flow, and water resistance when the inlet air dry-bulb temperature is 27°C, wet-bulb temperature is 21°C, inlet water temperature is 7°C, and outlet water temperature is 12°C.

Solution: From Table K1, the correction factor K1 = 1.14. From Table K2, the correction factor K2 = 1.27.
Therefore:

Actual cooling capacity (Q) = Standard condition cooling capacity × K1 = 150.8 × 1.14 = 171.91 kW
Actual water flow (V) = Standard condition water flow × K1 = 26.21 × 1.14 = 29.88 m³/h
Actual water resistance (P) = Standard condition water resistance × K2 = 14.07 × 1.27 = 17.87 kPa

Heating, water volume, water resistance

Heating conditions: air inlet temperature 15℃, water inlet temperature 60℃

Note: 1. The unit's performance reference at a headwind speed of 2.5m/s
2. The coil is a dual-purpose coil for hot and cold applications

• Customization Options:Commercial AHUs come in various sizes and configurations to meet the specific needs of different commercial spaces, such as offices, retail stores, restaurants, and hotels.
• Air Filtration and Purification:These units are equipped with advanced filtration systems to remove dust, allergens, and pollutants from the air, ensuring a clean and healthy indoor environment.
• Temperature and Humidity Control:Commercial AHUs are designed to provide precise control over temperature and humidity levels, creating a comfortable atmosphere for building occupants regardless of external weather conditions.
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• Integration with Building Management Systems (BMS):These units can be seamlessly integrated with building automation and management systems to enable centralized control and monitoring of HVAC operations, optimizing efficiency and performance.

• Office Buildings: Provide climate control and ventilation for offices, meeting rooms, and common areas.
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