Computer Controlled Vapour-Compression Refrigeration Unit Deluxe

The Computer Controlled Vapour-Compression Refrigeration Unit, allows the understanding of the vapor-compression refrigeration process by changing the operation of the different parts of the process, and to study the response of the system.

ATENG 12763 — Computer Controlled Vapour-Compression Refrigeration Unit

(for main items)

• With this unit there are several options and possibilities:
• Main items: 1, 2, 3, 4, 5 and 6.
• Optional items: 7, 8, 9, 10 and 11.
• Let us describe first the main items (1 to 6):
• 1 ATENG 12763. Unit:
  Anodized aluminum frame and panels made of painted steel.
  The unit includes wheels to facilitate its mobility.
  Main metallic elements made of stainless steel.
  Diagram in the front panel with distribution of the elements similar to the real
  one.
• High pressure area:
  Computer controlled hermetic compressor with different operation speed.
  Wattmeter to measure the compressor power.
• Pressure sensor located at the outlet of the compressor, range: 0 – 25 bar.
  High pressure manometer located at the outlet of the compressor.
  “J” type temperature sensor located at the outlet of the compressor.
  High pressure switch.
• Condensation area:
  Plate heat exchanger that uses water as heat transfer medium.
  High pressure manometer located at the outlet of the condenser.
  “J” type temperature sensor located at the outlet of the condenser.
  Refrigerant receiver.
  Refrigerant filter to retain particles of condensate.
• Refrigerant flow sensor, range: 5 – 60 l/h.
• Low pressure area:
  Expansion valve.
  Low pressure manometer located after the expansion valve.
  “J” type temperature sensor located after the expansion valves.
• Evaporation area and compressor inlet:
  Plate heat exchanger that uses water as heat transfer medium.
  Liquid separator to retain liquid particles before going on to the compressor. ATENG 12763 unit
  Low pressure manometer located at the outlet of the evaporator.
• Pressure sensor located at the compressor inlet, range: 0 – 10 bar.
  “J” type temperature sensor located at the outlet of the evaporator.
• Heat exchange water circuit:
• Water reservoir, capacity: 400 l.
• Two computer controlled water circulation pumps:
• Max. flow: 47 l/min.
• Max. head: 6 m.
  Two regulation valves to control the condensation water flow and the evaporation water flow.
  Two water flow sensors, one for the condensation water and other for the evaporation water,
• range: 0.25 – 6.5 l/min.
  Four “J” type temperature sensors for measuring the inlet and outlet temperature of condensation and
  evaporation water.
  Enthalpy diagram of R-513a.
  This unit has been designed for the use with the refrigerant R-513a, CFC-free, environmental friendly.
• The complete unit includes as well:
  Advanced Real-Time SCADA.
  Open Control + Multicontrol + Real-Time Control.
  Specialized Control Software based on LabVIEW.
  National Instruments Data Acquisition board (250 KS/s, kilo samples per second).
  Calibration exercises, which are included, teach the user how to calibrate a sensor and the
  importance of checking the accuracy of the sensors before taking measurements.
  Projector and/or electronic whiteboard compatibility allows the unit to be explained and
  demonstrated to an entire class at one time.
  Capable of doing applied research, real industrial simulation, training courses, etc.
  Remote operation and control by the user and remote control for technical support,
  are always included.
  Totally safe, utilizing 4 safety systems (Mechanical, Electrical, Electronic & Software).
  Designed and manufactured under several quality standards.
  Optional ICAI software to create, edit and carry out practical exercises, tests, exams,
  calculations, etc. Apart from monitoring user's knowledge and progress reached.
  This unit has been designed for future expansion and integration. A common expansion is
  the Scada-Net (ESN) System which enables multiple students to simultaneously
  operate many units in a network.