Air Cooled Screw Chillers

Packaged Air-Cooled Screw Chillers (ALSA Series) equipped with screw compressor, are designed and manufactured for use under any temperature conditions with optimum operation, high efficiency, low power consumption, and fast & easy installation. and are used to provide central cooling systems in all construction and industrial projects and production processes. Since these chillers work with R134a gas in their systems, they are quite Eco-friendly.

• Having Semi-closed screw compressors (Bitzer, Germany; Hanbell, Taiwan)
• Utilization of Shell and tube evaporators
• Having finned tube condensers
• Axial condenser fans equipped with assembled fan motors
• casing with galvanized sheets covered with electrostatic paint
• Full bolt & nut assembling without any welding

• High- and Low-pressure mechanical control switches
• Compressor suction and liquid line valves for repair and maintenance
• Phase control for input phases and phase symmetry
• Controllability of all equipment through PLC
• Water-flow differential pressure switch
• High and Low-pressure transmitters
• Safety valve on the liquid line
• Compressor electronic protection module
• Compressor oil-level control switch
• Sensor to indicate compressor coil temperature
• High and Low-pressure indicator mechanical gauge for each separate circuit
• Compressor heater
• Electronic expansion valve to control the superheat rate under all working conditions
• Continuous capacity control from 12.5 to 100% based on the Refrigeration load demand
• Connectability to an integrated BMS through the Modbus protocol
• Rubber shock absorber

– Air cooled screw chillers with hybrid operation (one compressor with linear capacity control and one with inverter operation)

• Installability with inverter compressor
• Air-cooled screw chillers with inverter condenser fans
• Designability with low-noise operation
• Designability with super low-noise operation
• Usability of different anti-corrosion coatings for condenser heat-exchangers (e.g., Blygold, Heresite, Sakaphen, etc.)
• heatexchanger producibility with copper pipes, copper fins and coated fins (e.g., Blue, Gold and Also copper fins)
• Usability of 0-10 V or 4-20 mA analog inputs for set-point variations
• Usability of open-type screw compressors for specific applications
• Star/Triangle setup to reduce the startup current
• Usability of micro-channel condenser heat-exchangers
• Operability during all four seasons
• Inter connectability of multiple chillers manageable as a single unit and spare chillers/working hours management
• EC type condenser fans
• Condenser centrifugal fans for special applications
• Spring-type shock absorbers
• Different-dimension touch screens
• Digital inputs for upstream control
• Producibility of hot water (up to 100% heat recovery) to reduce energy consumption
• Usability of thermostats in the upstream
• Usability of protective mechanical equipment including propulsion line silencers (mufflers), suction line accumulators and liquid line receivers
• Usability of high-/low-pressure circulator pumps with the operability of one as a spare pump
• Usability of the evaporator’s water storage tank
• Usability of the Refrigeration water line hydraulic equipment (e.g. gauge, expansion tank, bleeding/safety valve, etc.)
• Usability of energy consumption controller equipment
• Usability of soft starters
• Installability of protective grids on the machine lower levels and on condenser coils
• Installability of anti-freeze heater on the evaporator
• Usability of the compressor oil-level indicator sensor
• Usability of economizer by plate heat exchanger
• Usability of mechanical filters on suction/liquid lines
• Usability of Victulic quick-connection hydraulic equipment
• Usability of sealing chambers to protect condenser fans and coils in non-operational seasons
• Usability of an extra oil separator for each circuit
• – Usability of liquid injection systems to prevent the liquid temperature rise and extend compressor life time