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The most efficient industrial process chiller on the market.

  • 1 to 30 tons cooling capacity
  • Variable speed compressor operates effectively between 10% and 100% of rated capacity
  • Energy savings between 30% to 50% of initial investment
  • Standard operating range from 0°F to 80°F (-18°C to 27°C)
  • State of the art, adaptive controls with remote communication options and Industry 4.0 ready

The Delta T Systems “VS Chiller” with the variable speed compressor operates effectively between 10% and 100% of its rated capacity. This means a 10 ton chiller can operate very efficiently as a 1 ton as well as up to a 10 ton chiller. This new design applies proven, variable speed “green” compressor technology from the HVAC industry to produce up to a stunning 50% energy savings over traditional hot gas bypass regulation. These energy cost savings can pay for the chiller investment in less than 3 years. In addition, utility companies may offer purchasing incentives and rebates.

An Air cooled chiller is a system that is designed to use ambient air surrounding the condensing unit to cool a refrigerant back into a liquid once it has absorbed heat from the process. Portable, air cooled style chillers refers to a configuration that contains a refrigeration circuit, a reservoir and pump, along with controls.

Whether you need an air cooled process chiller for industrial or other processing applications, Delta T Systems guarantees that our experienced engineers can help you select the right air cooled chiller for your application or customize it to fit and function to your specifications.

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
    • Rotary compressors on the 1-3 ton models
    • Scroll compressors on the 5-30 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
    • Less refrigerant required due to smaller refrigerant tubes
    • Eliminates galvanic corrosion as seen with copper tube and aluminum fin designs

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 0 to 80 °F
  • Tight temperature control to within 0.5 °F

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
  • Dew point tracking sensor to adjust set point
  • 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 (34x34 on 5 and 7.5 ton, 34x46 on 10 and 15 ton, 34x92 on 20 and 30 ton)
  • Can fit in standard shipping container - tallest chiller (15 ton) is 85 inches
  • Full access on all sides
  • 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

  • Automatic water bypass
  • Cleanable condenser filter
  • Flow indication
  • Dirty strainer indication
  • Tank level indication
  • Low and high level indication

Optional Features

  • 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
Model Cooling Capacity Temp Range Condenser Flow Reservoir Dimensions W x L x H Shipping Weight Operating Weight
VSPA001 1 ton 0°F to 80°F 667 CFM 6 GL 20x30x53 200 300
VSPA002 2 ton 0°F to 80°F 1314 CFM 12 GL 20x30x53 260 360
VSPA003 3 ton 0°F to 80°F 1937 CFM 12 GL 20x30x53 300 400
VSPA005 5 ton 0°F to 80°F 3317 CFM 25 GL 34x34x64 480 650
VSPA008 7.5 ton 0°F to 80°F 4541 CFM 25 GL 34x34x74.5 580 750
VSPA010 10 ton 0°F to 80°F 6569 CFM 40 GL 34x34x74.5 650 980
VSPA015 15 ton 0°F to 80°F 9726 CFM 40 GL 34x46x85 750 1090
VSPA020 20 ton 0°F to 80°F 13,138 CFM 70 GL 34x92x75 1,300 1,980
VSPA030 30 ton 0°F to 80°F 19,452 CFM 70 GL 34x92x85.5 1,500 2,180

A chiller equipped with a fixed speed compressor controls the temperature of the water traditionally with simple on/off of the compressor. This means that when the compressor runs, it runs at the designed load regardless of the process needs. A more advanced option is a hot gas bypass which technically keeps the chiller running but bypasses the hot gas if no cooling load is needed. This avoids the on/off of the compressor but results in a waste of energy since no cooling is required from the process.

The Delta T Systems industrial chiller with the variable speed compressor operates effectively between 10% and 100% of the capacity which means a 10ton chiller can operate efficiently as a 1 ton as well as up to a 10ton chiller.

The Air Conditioning, Heating, and Refrigeration Institute (AHRI) conducted several studies to identify the true amount of time a chiller runs at full vs. partial load. The outcome is an integrated part load value (IPLV). The national average cost for electricity is $0.14/kw-hr. If you assume a 2 shift operation, 5 days a week for one year, the energy savings for a 10 ton chiller are $4,690 or 58% less than a chiller with a fixed speed compressor. These energy cost savings can pay for a chiller in less than 3 years.

These conservatively calculated energy savings can be much higher because most chillers are selected based on the peak usage time of the year which means the chiller is oversized for the average usage.



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