R634 Refrigeration Cycle Demonstration Unit

R634 Refrigeration Cycle Demonstration Unit

A bench mounted vapour compression refrigeration cycle demonstration unit using a hermetic compressor and water cooled flooded glass condenser and evaporator. A float controlled expansion device controls the flow of refrigerant in the system. Unit operates on low-pressure non-toxic ozone friendly refrigerant. Internal electrical and mechanical safety devices allow for unsupervised operation by students. Standard instrumentation fitted enables measurement of the condenser and evaporator pressures and temperatures as well as water flow rates and water temperatures.

Three optional extras available:

R634A Digital Temperature Indicator

R634B Digital Wattmeter

R634R Refrigerant Flowmeter

 

R634 Refrigeration Cycle Demonstration Unit

A bench mounted vapour compression refrigeration cycle demonstration unit using a hermetic compressor and water cooled flooded glass condenser and evaporator. Unit operates on low-pressure non-toxic ozone friendly refrigerant.

Internal electrical and mechanical safety devices allow for unsupervised operation by students.

Standard instrumentation fitted enables measurement of the condenser and evaporator pressures and temperatures as well as water flow rates and water temperatures.

Unit supplied with a detailed experimental operating and maintenance manual giving example experimental results and sample calculations.

 Equipment supplied with spares and accessories for two years normal operation together with a full two-year warranty.

Further specification details available on request

 An optional digital temperature indicator upgrade (R634A) allows measurement of all system temperatures to 0.1°C with the addition of compressor discharge and condensed liquid temperatures so enabling a cycle diagram to be drawn on a Pressure-Enthalpy chart.

  • Demonstration of the vapour compression refrigeration and heat pump cycle with visual observation of all-important processes.
  • Investigation and demonstration of the pressure-temperature relationship during evaporation and condensation.
  • Demonstration of: -
    • Charging
    • Pumping over or pumping down the refrigerant charge into the condenser.
    • The effect of air in refrigeration systems.
  • Determination of effect of evaporating and condensing temperatures on the refrigeration rate and condenser heat output.
  • Investigation of the effect of compressor pressure ratio on system performance.
  • Determination of overall heat transfer coefficient in a simple shell and tube type heat exchanger.
  • With the addition of the optional temperature indicator R634A: -
  • Development of a refrigeration cycle diagram on a pressure - enthalpy chart.
  • With the addition of the optional digital wattmeter R634B: -
  • Measurement of the electrical power used to drive the vapour compression refrigeration and heat pump cycle.

Electrical:

A: 220/240 Volts Single Phase 50Hz (with earth/ground).

    Line current up to 4.5A at 230v.

  OR

B: 110/120 Volts Single Phase 60Hz (with earth/ground).

    Line current up to 9.0A at 115v

Water:    

6 litre/minute at a minimum of 28m head.