REFRIGERATION CYCLE

This simple refrigeration cycle unit assists students to learn the stages of refrigeration at an entry level. Students learn about pressure-enthalpy charts and use the chart for R-134a to determine the coefficient of performance (CoP), superheat and sub-cooling from the enthalpy changes. 

The refrigeration circuit features high and low pressure gauges, a pressure switch, sight glass, filter dryer and TEV valve. The circuit also includes pressure transducers that connect to the instrumentation. Four thermocouples placed around the refrigeration circuit allow the observation of temperatures, these can be used for the calculation of potential super-heating and sub-cooling.

The evaporator and condenser coils are submerged in heat source and heat sink water tanks for the clear demonstration of a practical heat pump. A small pump provides a circulation of the water between the heat source and sink for steady state experiments.

EC1500V features VDAS® Onboard for data acquisition via USB cable (supplied) to a computer (not supplied).

Key Features:

• Includes TecQuipment’s Versatile Data Acquisition System VDAS® Onboard, featuring data acquisition via USB
• VDAS® software allows students to visualise experimental parameters using pressure–enthalpy charts
• Pressure and temperature measurements taken around the refrigeration circuit
• LCD display of all measured parameters
• Temperature sensors in heat source and heat sink water tanks allows clear demonstration of a refrigeration or heat pump cycle
• Water pump allows circulation of water for steady-state experiment
• Refrigerant circuit colour-coded to international standard