Variable Speed Portable Process Chillers

Refrigeration Features

• Hermetically sealed variable speed compressor technology
  • Energy savings between 30% and 50% of the initial investment
  • Soft start
  • Less wear and tear compared to compressor cycling
  • Inverter drive protects compressor from power spikes
  • Tight temperature control within ½ a degree
  • Can overspeed compressor to obtain higher capacities
  • Scroll compressors on the 40 to 60 ton models
• Stainless steel, copper brazed plate evaporator
  • Non-ferrous – will not rust
  • Less chance of fouling due to its inherent small channels producing high velocities keeping the channels clear.
• Variable speed condenser fan
  • Operates at the most efficient point
  • Lowers noise since it runs at the minimum speed required
• Electronic expansion valve
  • Fine tunes the amount of refrigerant needed to maintain the system at the most efficient operating point
  • Allows for a larger operating temperature range without sacrificing temperature control or adding expensive refrigeration controls
• Microchannel aluminum condenser coils (All air cooled models)
  • Less refrigerant required due to smaller refrigerant tubes
  • Eliminates galvanic corrosion as seen with copper tube and aluminum fin designs
• Coaxial condensers (2 to 10 ton water cooled models)
• Cleanable shell and tube condensers (20 to 60 ton water cooled models)

Water Features

• Non-ferrous chilled water piping
• Evaporator inlet strainer
  • Easy access and serviceability for cleaning or removal
  • Larger filter area vs. a typical y-strainer equates to less time between cleanings
• Standard operating range from -10°F (-23°C) to 100°F (38°C)
• Tight temperature control to within 0.5°F
• Automatic bypass in low/no flow scenarios to protect unit

Sensor Features

• Refrigerant suction and discharge pressure transducers
  • Allows the compressor to adjust its speed to adapt to the best efficient and safe condition to reduce down time
  • Actual pressure information is displayed and captured to reduce the time to troubleshoot
  • Eliminates fragile copper capillary tubes
• Refrigerant suction and liquid line temperatures sensors for superheat and subcool readings
• Compressor discharge temperature sensor for compressor protection
• Chilled water in and out pressure and temperature sensors
• Tank level sensor

Cabinet Features

• Fits through a standard 36 inch doorway (needs to be 34-1/2 inches or less to meet this due to door stops)
• Small footprint (34×34 on 5 and 7.5 ton, 34×46 on 10 and 15 ton)
• Can fit in standard shipping container – tallest chiller (15 ton) is 85 inches
• Full access on all sides with lift off panels
• Separate air section so chiller can be serviced by removing panel without creating faults
• Round coil allows for locating chiller up against a wall

Electrical Features

• NEMA 12 electrical panel
• Disconnect switch
• 24 V controls
• Finger safe electrical components
• Phase monitor
• 4 inch touch screen display
• State of the art controls
  • Flexible remote communication options
  • Extensive digital data collection
  • Adaptive control to reduce downtime

Control Features

• Proprietary Control Platform from the leader in the HVAC and refrigeration industry
  • Integrated Ethernet interfaces offer a wide range of open protocols (Web server, Modbus/TCP, BACNet, FTP, DHCP, DNS, NTP) (optional)
  • Cloud services (optional)
• 4 Inch Touch Screen Display
• Adaptive Control
  • Uses the systems pressures, temperatures, and compressor drive information to operate the chiller at the most efficient operating point while maintaining the predefined compressor operating envelope limits
  • Changes the speed of the compressor should any of the parameters approach a fault condition in order to reduce customer downtime.
• Data Logging
  • Logs temperature and pressure data continually for historical reference
  • Captures data at the time of an alarm event
• Remote Monitoring (optional)

Bonus Features

• Dewpoint sensing and setpoint tracking
• 50 Hz applications without a cooling capacity derate
• Modbus RTU or BACnet MS/TP RS485 communication
• Remote start/stop
• Cooling enabled output
• Automatic water bypass
• Flow indication
• Dirty strainer indication
• Tank level indication
• Low and high level indication

Options

• Remote display
• Overhead piping kit
• Mounting feet in lieu of casters
• No pump, no tank
• Pump, no tank
• Ship loose pump, no tank
• Auto water make-up
• 50 micron side stream filter (factory installed)
• 50 micron full flow filter (factory installed)
• Alarm horn
• Alarm strobe
• Remote alarm contacts
• Remote access to control
• UL 508a
• SNMP, Modbus TCP/IP, BACnet Ethernet Communication
• Outdoor / outdoor coastal
• Dust air filters
• Anti-drain back design
• Supply and return valves
• Pump VFDs
• Medium and high pressure fans for ducted applications

Portable Chiller Features:

• Proprietary Control Platform from the leader in the HVAC and refrigeration industry
• Integrated Ethernet interfaces offer a wide range of open protocols
• Cloud services (optional)
• 4 Inch Touch Screen Display
• Adaptive Control
• Operational efficiency optimization algorithm
• Data Logging
• Continual temperature and pressure data logging
• Alarm event data logging
• Remote Monitoring (optional)

Delta T Systems has been engineering state-of-the-art, portable air and water cooled process chillers for a large variety of commercial applications for nearly two decades. Our chillers serve many sectors including industrial manufacturing, food and beverage processing, medical and pharmaceutical products.