BERG - Outdoor Air Cooled Chillers

Vapor-compression refrigeration is one of the many refrigeration cycles available for use. Used in commercial refrigerators, large-scale warehouses for storage of foods and meats and a host of other commercial and industrial services. Oil refineries, petrochemical and chemical processing plants, and natural gas processing plants are among the many types of industrial plants that often utilize large vapor-compression refrigeration systems.

The vapor-compression industrial refrigeration system uses a circulating liquid refrigerant as the medium which absorbs and removes heat from the space to be cooled and subsequently rejects that heat elsewhere.

All industrial process chilling systems have four components: a compressor, a condenser, an expansion valve (also called a throttle valve), and an evaporator. Circulating refrigerant enters the compressor in the thermodynamic state known as a saturated vapor and is compressed to a higher pressure, resulting in a higher temperature as well. The hot, compressed vapor is then in the thermodynamic state known as a superheated vapor and it is at temperature and pressure at which it can be condensed with typically available cooling water or cooling air. That hot vapor is routed through a condenser where it is cooled and condensed into a liquid by flowing through a coil or tubes with cool water or cool air flowing across the coil or tubes. This is where the circulating refrigerant rejects heat from the system and the rejected heat is carried away by the air.

To protect the chiller from inclement weather, the outdoor chiller may be installed in a pre-fabricated, insulated walk-in enclosure. Condenser and water piping to be heat traced for freeze protection.

• Heavy construction while maintaining maximum heat transfer
• Seamless copper tubing aluminum fins
• Permanent metal-to-metal contact between tubing and fins

• High efficiency copper brazed stainless steel plate construction
• Designed and constructed in accordance with ASME code
• High efficiency shell and tube construction
• Carbon steel shell (water side)
• Copper tube with inner fin (refrigerant side)
• Vessel designed and constructed in accordance with ASME code

• Stainless steel divided holding tank with overflow drain and 1/2″ insulation

• Freeze-up controls
• High and low refrigerant pressure controls
• Compressor motor overload protection
• Oil pressure safety control
• Refrigerant pressure relief valve

• 460 / 575 / 230 / 380 Volts 60 / 50 Hz
• 120 / 240 Volt single phase control voltage
• Housed in a NEMA 4 enclosure
• Operating and fail Lights
• UL or CSA approved components

A custom electrical control panel allows one point hookup and may include:

• HMI (Human Interface Device) touchscreens
• PLC (Programable Logic Control)
• SCADA (Supervisory Control And Data Acquisition ) communication systems
• 24/7 alarm reporting to beepers or cell phones

All pump starters, fuses, disconnect, control voltage transformer, run and fail lights, are housed in a common NEMA rated panel.

• Tested under load conditions prior to shipment
• All safety controls are factory set and checked