Computer Controlled Air Conditioning Laboratory Unit

The Computer Controlled Air Conditioning Laboratory Unit, to study the change of the air conditions and the refrigeration circuit.

ATENG 12710 — Computer Controlled Air Conditioning Laboratory 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 12710. 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.
• Tunnel:
• Material: stainless steel.
• Dimensions: 300 x 300 x 1600 mm.
• It includes:
  Axial fan, with speed control from computer, max.
• speed: 2500 rpm, max flow: 2160 m³/h.
• Two heating elements, computer controlled: one
• (pre-heater) situated at the evaporator inlet, power:
  2000 W and other (re-heater) situated at the
• evaporator outlet, power: 1000 W. PID control of
  the temperature.
  Four hygrometers, placed along the tunnel, formed
  each one by two temperature sensors (wet and dry
• bulb). Unit: ATENG 12710
  Two steam lines inject steam from a steam generator
  (not included) to the tunnel to modify the air characteristics.
• Two windows of 200 x 300 mm to visualize the tunnel inside.
  Evaporator. It consists of a finned radiator where a coolant flow circulates.
• Cooling circuit. It includes:
  Compressor, computer controlled, 1/2 CV.
  Filter.
  Condenser.
  High-pressure switch (it switch off the compressor when the pressure reach the fix pressure).
  Expansion valve.
• Twelve temperature sensors, type “J”:
  Eight temperature sensors (four temperature sensors (dry bulb) and four temperature sensors (wet
  bulb) to form four hygrometers).
• Four temperature sensors in the cooling circuit:
  Two temperature sensors at the inlet and outlet of the evaporator and two temperature sensors at
  the inlet and outlet of the condenser.
• Two flow sensors:
• Flow sensor to measure the coolant flow, range: 5 – 60 l/h.
• Flow sensor to measure the air flow, range: 0 – 2500 m³/h.
• Two pressure sensors:
• Pressure sensor is situated at the condenser inlet and other is situated at the condenser outlet, range:
• 0 – 25 bar.
• Three Bourdon manometers:
  Manometer is situated at the evaporator inlet, other is situated at the evaporator outlet and the last
  one is situated at the condenser outlet.
  Psychrometric chart and Enthalpy diagram of R-513a.
  This unit has been designed for the use with the refrigerant R-513a, CFC-free, environmental friendly.
  3

Complete Technical Specifications (for main items)

• The complete unit includes as well:
  Advanced Real-Time SCADA and PID Control.
  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.
• Required element (Not included):
• ATENG 12016. Steam Generator (3 kW).