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Verification and Fabrication of Joule ��?Thomson Effect

Sadhasivam C and Damodaran B

To verify the Joule Thomson effect by liquefaction of the atmospheric gases. Joule-Thomson effect states that “heat change in temperature of a gas on expansion through a porous plug from a high pressure to a lower one under adiabatic conditions”. The atmospheric air is compressed to increase the pressure using a compressor. This compressed air is sent through a heat exchanger which facilitates the lowering of temperature of the system by the temperature difference created between the inlet and the outlet fluid. Again the fluid is sent through a throttling valve which is capable of suddenly expanding the air resulting in further cooling and leads to the formation of liquid droplets.