Variable Speed Portable Process Chillers

water cooled portable chiller, small water chiller units, portable water chiller units

Delta T Systems offers leading edge performance and a full range of energy-efficient portable chiller systems. Unique variable speed technology and high precision temperature control (within 0.5°F ) make these portable chillers excellent performers in a wide variety of temperature control applications.

  • Standard portable chiller units available from 1 – 30 tons and custom solutions above 60 tons
  • Packaged chillers available for 40, 50 and 60 tons and modular chillers above 60 tons
  • Air and water cooled chiller systems
  • Temperature range from -10°F (-23°C) to 100°F (38°C)
  • Temperature control to within 0.5°F
  • Effective operation between 10% and 100% of rated capacity for all variable speed chiller units

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


  • 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.