R290 intarCUBE chiller

Description

intarCUBE chiller is a glycol process plant for commercial and industrial refrigeration applications, which use a reduced load of R290 as a primary refrigerant, all contained in the chiller, and water, glycol or brine as a secondary refrigerant for the transport of cooling.

This unit is based on a compact construction, with a small footprint, air condensation and an integrated hydraulic unit. The refrigerant circuit is in an insulated compartment with leak detection and emergency ventilation.

Cooling and hydraulic scheme
Installation scheme

• 400 V-III-50 Hz power supply. Available in 60 Hz. Other voltages by request.
• Weatherproof casing with separated compressor compartment, made in self-supporting galvanised steel sheet casing and polyester paint.
• Reduced load of R290 refrigerant.
• Dual or triple R290 scroll compressors with noise-insulation jackets; or R290 semihermetic compressor with capacity control and soft starting. crankcase heaters with ATEX grade.
• Oil separator and oil equalisation line between compressors (Tandem); individual electronic oil injection for 3 and 4 compressors.
• Variable speed drive on one compressor.
• Micro-tube condensing coil with aluminium fins and 7 mm copper tubes.
• Variable speed EC fans.
• Plate heat exchanger with electronic expansion valve.
• Internal plate heat exchanger for liquid subcooling and suction superheating.
• Cooling circuit made of copper tube with soldered connections, dehydrating filter, ATEX pressure switches, ATEX pressure transducers and temperature probes.
• IP55 separated electrical board with ventilation fan. Individual Siemens protection devices for each compressors and fan.
• Dixell iPro controller, with variable cooling capacity control (only with inverter compressor) and condensing pressure control with floating setpoint.
• R290 leak detector, alarm light and buzzer, and emergency ventilation of compressor compartment with ATEX extraction fan.
• Inbuilt hydraulic circuit made of copper tube and threaded connections, with a fixed speed pump for glycol water with 15 mH2O available pressure, expansion vessel, relief valve, filter, thermometers, manometers, air vent, purge and service valves.

• Indoor version with EC plug fans for ducted air outlet, and ATEX grade centrigufal fan for emergency ventilation.
• Variable speed pump for variable glycol flow control.
• Emergency backup control with pressure switches.
• Anti-corrossion polyurethane coating on the condenser coil.
• Remote touchscreem control pad.
• Power-supply monitor.
• Silent-blocks for the installation of the chiller.
• Heat recovery heat exchanger (20 % or 80 % of condenser heat) for generation of hot water.