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
• Capacites from 150 kW
• Diverse implementability of special demands

Design pressure

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

* Optional at additional price

Completely mounted and tubed unit

• Transcritical and subcritical CO₂ reciprocating compressors by Bitzer or Frascold
• Guide compressor with frequency converter
• Ball stop valves
• High and low pressure packages
• Pressure Cut-Out for high pressure and safety protection, non-adjustable, type approved according to compressor
• Safety valves for high/medium pressure and suction side (optional redundant)
• Muffler for pulsation damping in the common
• All switching devices which are necessary for fully automatic operation
• Electric components are labelled according to German standards
• Ventilation of the switchboard Main switch Control transformers Switchboard with electronic control - Wurm Systeme
• Independent power supply closes the high and medium pressure valves in case of power failure discharge line
• Insulation on suction side (19 mm insulation)
• Medium pressure receiver (250 L / 2 x 250 L)
• Sensor at the outlet of the gas cooler
• Level control
• Insulation of the medium pressure vessel
• Valve for post-injection
• Stop valve after filter-drier and sight glass
• Flash gas and suction line heat exchanger (medium/low temperature cooling)
• Active liquid subcooling
• Subcooling plate for gas cooler (optional)
• Antivibration pads

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