What is Lindes method?

What is Lindes method?

Linde’s process is known as Adiabatic expansion of compressed gas. Principle. The process is based upon Joule – Thomson Effect, which states, “When a gas under high pressure is allowed to expand adiabatically through a fine hole into a region of low pressure, it is accompanied by cooling.

What is Joule Thomson method of liquefaction of gases?

Joule-Thomson effect, the change in temperature that accompanies expansion of a gas without production of work or transfer of heat. At ordinary temperatures and pressures, all real gases except hydrogen and helium cool upon such expansion; this phenomenon often is utilized in liquefying gases.

What is the method of liquefaction?

In general, gases can be liquefied by one of three general methods: (1) by compressing the gas at temperatures less than its critical temperature; (2) by making the gas do some kind of work against an external force, causing the gas to lose energy and change to the liquid state; and (3) by making gas do work against …

What is Claude’s method?

(ii) Claude’s method : This process is based upon the principle that when a gas expands adiabatically against an external pressure (as a piston in an engine), it does some external work. Since work is done by the molecules at the cost of their kinetic energy, the temperature of the gas falls causing cooling.

What are the three methods used for liquefaction of gases?

In general, gases can be liquefied by one of three methods: (1) by compressing the gas at temperatures less than its critical temperature; (2) by making the gas do some kind of work against an external force, which causes the gas to lose energy and change to the liquid state; and (3) by making gas do work against its …

Which method of gas liquefaction is efficient?

But, the only difference between Linde Claude’s process of liquefaction of air, or other gases is that in Claude’s process there is an isentropic expansion. That’s why Claude’s process is more efficient than Linde’s process. Claude’s method works on two principles. First, the Joule Thomson effect.

What is negative Joule-Thomson effect?

means that work is done on the fluid and the internal energy increases. If the increase in kinetic energy exceeds the increase in potential energy, there will be an increase in the temperature of the fluid and the Joule–Thomson coefficient will be negative.

Which method of their liquefaction is more efficient?

While the transportation method is the same for both liquefied and compressed hydrogen, the former offers higher energy density rather than the latter and is a more efficient method.

What is preferential liquefaction?

preferential liquefaction is a process used to separate different compounds of air mixture.As the critical temperature of CO2 is high compared to critical temperature of O2. CO2 is liquifie first.Higher the critical temperature,higher the ability to liquity.

Which method of air liquefaction is more efficient?

But, the only difference between Linde Claude’s process of liquefaction of air, or other gases is that in Claude’s process there is an isentropic expansion. That’s why Claude’s process is more efficient than Linde’s process.

What is the principle of liquefaction of gases?

Liquefaction of gases is the process by which substances in their gaseous state are converted to the liquid state. When pressure on a gas is increased, its molecules closer together, and its temperature is reduced, which removes enough energy to make it change from the gaseous to the liquid state.