Air Conditioning Laboratory Unit

The Air Conditioning Laboratory Unit, main objective is to introduce the student in the complex world of the air conditioning installations, as well as to study and determine the optimal parameters for the unit operation in function of the environmental requirements (humidity, heat, temperature and refrigeration, etc. ).

ATENG 12712 — Air Conditioning Laboratory 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 regulation, max speed: 2500 rpm, max flow: 2160 m³/h.
  ATENG 12712 detail
• Two heating elements: one (pre-heater) situated at the evaporator inlet, power: 2000 W,
• and other (re-heater) situated at the evaporator outlet, power: 1000 W.
  Four hygrometers, placed along the tunnel, formed each one by two temperature sensors (wet and dry bulb).
  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, 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 (fourtemperature 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.
• Flow meter to measure the coolant flow, range: 5 – 60 l/h.
• Inclined manometer to measure the air flow, range: 0 – 1” w.c. (water column).
• 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.
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Specifications

• Electronic console:
  Metallic box.
  Temperature sensors connectors.
  High pressure switch connector.
  ON/OFF controller for the compressor.
  ON/OFF controller for the fan.
  Fan speed controller.
  Selector for temperature sensors.
  Digital display for temperature sensors.
  Heating elements controllers.
  Cables and accessories, for normal operation.