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Chiller & Dry Cooler

Chiller & Dry Cooler

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Chiller & Dry Cooler Systems

Chiller and dry cooler systems used to meet the high-capacity cooling demands of data centers are essential components that enhance energy efficiency and ensure cooling continuity. Chiller systems operate on a closed-loop liquid cooling principle using water or glycol mixtures, delivering a constant and controlled coolant temperature to precision air handlers (CRAH units). Dry cooler systems, on the other hand, significantly reduce energy consumption by utilizing free cooling when outdoor conditions are favorable. ERFA Information Technologies designs chiller and dry cooler systems to operate in synergy, maintaining stable thermal balance and minimal energy costs throughout the year.

System Type:

Air-Cooled / Water-Cooled Chiller, Dry Cooler

Operating Principle:

Closed-loop liquid cooling combined with free cooling operation

Energy Efficiency:

Free Cooling, EER/SEER optimization, and inverter compressor control

Control & Monitoring:

Fully synchronized control with BMS and DCIM systems

Redundancy:

High availability with N+1 or 2N configurations

Application Area:

Data centers, industrial facilities, HVAC infrastructures

Chiller systems operate with high-efficiency compressor technologies (inverter, screw, or centrifugal) and microprocessor-based control modules. The chilled water is supplied to CRAH units at a constant temperature, maintaining a stable thermal profile within the data center. Dry cooler systems automatically take over when ambient conditions are suitable, disabling the chiller circuit to provide natural cooling. This approach can reduce overall energy consumption by 30–50%.

"Cooling efficiency is one of the most critical engineering indicators of energy management."

ERFA Information Technologies designs chiller and dry cooler systems as modular, redundant, and automation-driven structures. Airflow, condenser performance, water temperature, pressure differential, and outdoor conditions are dynamically monitored. With DCIM integration, the system analyzes real-time data to automatically switch to the optimal operating mode. This approach minimizes energy costs while ensuring long-term stability and durability of the cooling infrastructure.