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In thermodynamics, the Joule–Thomson effect (also known as the Joule–Kelvin effect or Kelvin–Joule effect) describes the temperature change of a real gas or liquid (as differentiated from an ideal gas) when it is expanding; typically caused by the pressure loss from flow through a valve or porous plug while keeping it insulated so that no heat is exchanged with the environment.
The Hampson–Linde cycle differs from the Siemens cycle only in the expansion step. Whereas the Siemens cycle has the gas do external work to reduce its temperature, the Hampson–Linde cycle relies solely on the Joule–Thomson effect ; this has the advantage that the cold side of the cooling apparatus needs no moving parts.
An expansion valve is a valve used for different purposes: Steam engines. A valve used to control the expansion of steam: ... Joule-Thomson cooler; heat pump;
In 1895, William Hampson in England [3] and Carl von Linde in Germany [4] independently developed and patented the Hampson–Linde cycle to liquefy air using the Joule–Thomson expansion process and regenerative cooling. [5] On 10 May 1898, James Dewar used regenerative cooling to become the first to statically liquefy hydrogen.
The Joule–Thomson effect, the temperature change of a gas when it is forced through a valve or porous plug while keeping it insulated so that no heat is exchanged with the environment. The Gough–Joule effect or the Gow–Joule effect, which is the tendency of elastomers to contract if heated while they are under tension.
A split range pressure controller may also modulate a Joule-Thomson valve across the turbo-expander. [10] [4] Pressure in blanketed tanks is maintained by self actuating pressure control valves (PCVs). As liquid is withdrawn from the tank the pressure in the gas space falls. The blanket gas supply valve opens to maintain the pressure.
The swirl valve is exactly the same as a Joule-Thomson (JT) choke valve, but it enhances the performance of downstream separators for the same pressure drop, by maximising droplet coalescence. The technology can be applied where a low temperature separator is undersized, or when a lower pressure drop over a JT valve is needed with a similar dew ...
Swirl valve: a specially designed Joule–Thomson pressure reduction/expansion valve imparting a centrifugal force upon the discharge stream for improving gas–liquid phase separation; Tap (British English), faucet (American English): the common name for a valve used in homes to regulate water flow
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