System for the thermal compression of a gas

A cyclic process for the thermal compression of a gas in a plurality of reservoirs of at least one group of reservoirs, each cycle comprising for each reservoir of said plurality of reservoirs the following steps:

• cooling of the gas contained in the reservoir and transfer of gas from the source to said reservoir,
• transfer of gas from a donor reservoir to said reservoir, said donor reservoir being at a higher pressure and temperature than the gas of said reservoir and of the same group, said donor reservoir being the one whose gas is at the lowest pressure among the reservoirs of said group whose gas is at a higher pressure and temperature than the gas of said reservoir, until equalization of the pressures in said reservoir and said donor reservoir, repeating this step for as long as there is another reservoir of said group whose gas is at a higher pressure and temperature than the gas in said reservoir,
• heating of the gas contained in the reservoir and transfer of gas from said reservoir to the target,
• transfer of gas from said reservoir to a receiving reservoir, said receiving reservoir being at a lower pressure and temperature than the gas from said reservoir, said receiving reservoir being that whose gas is at the highest pressure among the reservoirs of said group whose gas is at a lower pressure and temperature than the gas from said reservoir, until equalization of the pressures in said reservoir and said receiving reservoir, repeating this step for as long as there is another reservoir of said group whose gas is at a lower pressure and temperature than the gas in said reservoir,
• the step of cooling the gas contained in the reservoir and transferring gas from the source to said reservoir being carried out successively for each reservoir of said group.