Product Overview
The Water-Cooled CRAC Unit is a precision environmental control equipment specifically designed for data centers, server rooms, and mission-critical environments. CRAC (Computer Room Air Conditioner) is a specialized air conditioning unit for electronic equipment rooms, designed to maintain temperature, humidity, air cleanliness, and air circulation to support year-round cooling requirements. Unlike conventional comfort air conditioners, CRAC units are primarily designed to reduce room temperature (featuring high sensible heat ratio), typically achieving a sensible heat ratio of over 90%.
The Water-Cooled CRAC Unit employs a water-cooled direct expansion (DX) refrigeration cycle. Heat absorbed from the room is transferred to the water flowing through the unit's brazed stainless steel heat exchanger-condenser. Cooling water can be supplied from a main water supply (connected to a cooling tower or well, forming an open loop) or from an external dry cooler in a closed loop configuration. In closed-loop systems, a water-glycol mixture is typically used to prevent freezing.
This configuration eliminates the need for on-site refrigerant piping installation, significantly simplifying the installation process. The system delivers temperature control accuracy of ±1℃ and humidity control accuracy of ±3% to ±5%.
Applications
- Large Data Centers & Enterprise Server Rooms
- High-Density Computing Environments
- Facilities with Existing Water-Based Cooling Infrastructure
- Telecommunications Switching Stations
- Clean Rooms & Precision Laboratories
- Medical Equipment Rooms (MRI, CT, etc.)
Key Features
Water-Cooled Direct Expansion Technology
The water-cooled DX system uses water (from a cooling tower, chiller plant, or dry cooler) to absorb heat from the refrigerant. This approach offers higher cooling efficiency compared to air-cooled systems and is particularly suitable for facilities with existing water-based cooling infrastructure.
Precision Environmental Control
Equipped with high-precision sensors and intelligent controllers for real-time monitoring and regulation of temperature and humidity, maintaining environmental parameters within the optimal range for equipment operation. Supports integrated multi-function control including heating, humidification, dehumidification, and air filtration.
High Sensible Heat Ratio Design
Optimized for high-density data center environments with a sensible heat ratio ≥0.9, dedicating the majority of cooling capacity to directly reducing air temperature while avoiding energy waste from excessive dehumidification.
High Reliability
Built with rigorously tested, high-quality components, engineered for 24/7 continuous operation with long service life and low maintenance requirements. Critical components support redundant configuration to ensure system availability remains intact in the event of a single point of failure.
Simplified Installation
The water-cooled design eliminates the need for on-site refrigerant piping work, as all refrigerant circuits are factory-sealed. Cooling water connections are the primary on-site installation requirement, significantly reducing installation complexity.
Smart Control & Management
Equipped with true-color touchscreen displays, multi-level password access control, and self-diagnostic system functions. Comprehensive monitoring and display of key parameters including power supply voltage, frequency, cooling capacity, airflow, and temperature/humidity trends. Supports group control of multiple units with advanced features including scheduled rotation, fault-based rotation, cascading, and demand synchronization. Compatible with Building Management Systems (BMS), with communication protocols flexibly configurable based on project requirements.
Flexible Deployment
Supports multiple airflow configurations including upflow and downflow to accommodate various room layouts such as raised-floor underfloor supply and ceiling return air. Suitable for both new installations and retrofits where water infrastructure is available.
Applications
- Large Data Centers & Enterprise Server Rooms
- High-Density Computing Environments
- Facilities with Existing Water-Based Cooling Infrastructure
- Telecommunications Switching Stations
- Clean Rooms & Precision Laboratories
- Medical Equipment Rooms (MRI, CT, etc.)
Note: The above system description serves as a reference for standard functionality and architecture, intended to demonstrate core capabilities. Actual project solutions require customized design based on facility scale, cooling source conditions, heat load characteristics, and client requirements. Specific equipment configurations, cooling capacity ranges, and detailed parameters are subject to project-specific selection. For detailed technical data or selection assistance, please contact us through any of the channels listed on our "Contact Us" page. Our technical team will provide tailored recommendations based on your specific project needs.
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