ROXSTAindustrial

Specifications

• Clever design for individual use
• Stable/heavy construction
• Semi-modular for transport and installation
• Medium temperature cooling, low temperature cooling, heat pump, air conditioning, parallel, ejectors
• Diverse implementability of special demands

Design pressure

• 30 (60*) bar suction line (low temperature)
• 45 (60*) bar suction line (medium temperature)
• 45 / 60 / 80 bar medium pressure
• 120 bar high pressure side

* On request

Completely mounted and tubed unit

• Transcritical and subcritical CO₂ piston compressors by Bitzer or Frascold connected as a booster
• Guide compressor with frequency converter
• Ball stop valves
• High and low pressure packages (gauge LP cutout, Wurm pressure transducer)
• Pressure cut-out for high and safety pressure, non-adjustable, type tested per compressor
• Safety valves for high/medium pressure and suction side (optional redundant)
• Muffler for pulsation damping in the common discharge line (LT)
• Insulation on suction side
• Medium pressure receiver (165 / 250 / 2 x 165 / 2 x 250 L = 80 bar) & (420 / 2 x 420 L = 60 bar)
• Sensor at the outlet of the gas cooler
• Minimum level display
• Insulation of the medium pressure vessel
• Valve for post-injection
• Stop valve after filter-drier and sight glass
• Antivibration pads
• Suction filter (MT/LT)
• Oil sump heater each compressor

Advantages

• Can attach an exterior chiller. In southern countries, the additional cooling of the refrigeration circuit can keep a transcritical unit energetically stable. In doing so, sensitive products are protected.
• Eco-operation. Especially in high capacity ranges (> 80 kW), an Eco-parallel compression can provide significant advantages concerning efficiency. It improves the COP of the units and consumes less power. Ejectors can also be integrated.
• For longer piping paths or bigger height differences within the piping network, the ROXSTA-series contains active subcooling of the refrigerant. The differences in temperature within a unit are reduced, the behaviour of the unit also remains stable when the distances are longer.

Applications

• Industrial refrigeration