Efficient and Energy-Saving Solution for Cooling and Heating Applications
Holtop Falling Film Water-Cooled Screw Chiller/Heat Pump Units, with cooling capacities ranging from 85RT to 690RT. The units are designed for various applications including large public facilities, commercial buildings, hotels, hospitals, and industrial processes requiring precise temperature control.
Main Features:
• Semi-Hermetic Screw Compressor
Equipped with a semi-hermetic twin-screw compressor from a well-known global brand. The unit adopts optimized screw rotor design and precise manufacturing to ensure steady operation across different load conditions. An integrated capacity control valve allows real-time adjustment of refrigerant volume to reduce operating costs.
• Falling Film Evaporator
The system uses a falling film evaporator to reduce refrigerant charge. Refrigerant is evenly distributed across the surface of heat exchange tubes, forming a thin liquid film for evaporation. This improves heat exchange efficiency and helps lower energy consumption.
• Three-Stage Oil Return System
Three oil return mechanisms are used to maintain lubrication for the compressor and prevent excess oil from affecting heat exchange performance. This supports consistent and reliable operation.
• Electronic Expansion Valve
The unit includes an electronic expansion valve with 6386 control steps, enabling accurate refrigerant flow control. Combined with liquid level detection and temperature difference algorithms, it ensures stable and efficient refrigerant supply to the evaporator.
• New Condenser Design
The condenser uses enhanced heat exchange tubes and optimized tube arrangements for better flow and thermal performance. A built-in subcooling section allows refrigerant to be subcooled by over 5°C, which increases overall system efficiency.
•Safety Protection Functions
Built-in safety features include:
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•Water temperature freeze protection
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•No water flow protection
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•High/low pressure protection
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•Overcurrent protection
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•Power supply protection
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•Exhaust temperature protection
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•Sensor fault detection
Together with pre-check algorithms, these functions support safe operation in various environments.
• Control System
The built-in control system supports:
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•Operating status monitoring
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•Remote adjustment
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•Fault diagnosis and alerts
Sensor data and control algorithms help the unit maintain stable performance throughout operation.
Designed for Energy Efficiency
In response to carbon reduction goals in the building sector, this chiller/heat pump series focuses on energy efficiency, control accuracy, and system coordination. By combining screw compression, falling film evaporation, and efficient heat exchange, the unit helps reduce both operating energy use and lifecycle costs, making it suitable for energy-conscious projects.
Post time: Aug-07-2025
