A device for compressing gas using thermal energy. In a subsonic embodiment the heat gas passes through a convergent pipe C1 where it is provided with operating velocity, a convergent pipe C2 where it is simultaneously maintained at high speed and cooled by evaporation of liquid sprayed by nozzles R
A device for compressing gas using thermal energy. In a subsonic embodiment the heat gas passes through a convergent pipe C1 where it is provided with operating velocity, a convergent pipe C2 where it is simultaneously maintained at high speed and cooled by evaporation of liquid sprayed by nozzles R with adjustable position distributed in C2. In a supersonic embodiment, the gas reaches sonic velocity at the throat of C2 and supersonic velocity in a divergent DG, then compressed in a convergent CG1 and simultaneously cooled by evaporation of sprayed liquid. In both embodiments, the gas is finally compressed in a subsonic divergent DG1. Pipes with variable geometry enable to modify the cross-sections of the throats of the device. The device is essentially designed for thermoelectric power stations.
대표청구항▼
1. A gas compressor comprising:bringing means for bringing a low pressure entering gas at a high temperature; a convergent pressure reduction head (C1) for increasing a gas speed of said gas toward a sonic speed, said head being placed after said bringing means; a convergent nozzle (C2) placed after
1. A gas compressor comprising:bringing means for bringing a low pressure entering gas at a high temperature; a convergent pressure reduction head (C1) for increasing a gas speed of said gas toward a sonic speed, said head being placed after said bringing means; a convergent nozzle (C2) placed after said convergent head (C1), said convergent nozzle (C2) performing a pressure reduction and cooling of said gas, wherein said gas is cooled and at the same time maintained at a high velocity; a cooling system (R) comprising a set of liquid spray diffusers for spraying a liquid in said convergent nozzle (C2), said liquid spray diffusers having adjustable flow rates and adjustable positions and being distributed along a length of said convergent nozzle (C2), enabling said gas speed to be maintained at a speed lower than a sonic speed along said length of said convergent nozzle (C2); a divergent tube (D) placed after said convergent nozzle (C2) for compressing the gas by reducing its speed to a normal subsonic outflow speed; and an evacuation line in which said gas is at a lower temperature and at a higher pressure. 2. The gas compressor according to claim 1, comprising a transition zone (N) placed between said convergent pressure reduction head (C1) and said convergent nozzle (C2).3. The gas compressor according to the claim 2, wherein said convergent nozzle (C2) and said divergent tube (D) have variable geometry with an adjustable outlet section of said convergent nozzle (C2), with an adjustable inlet section of said divergent tube (D), and with an adjustable section of a neck between said convergent nozzle (C2) and said divergent tube (D) according to a flow and temperature of said gas to be compressed.4. The gas compressor according to claim 1, wherein, in order to obtain very small droplets and thus to facilitate their evaporation, a used liquid in said liquid spray diffusers is heated before being introduced into said liquid spray diffusers.5. The gas compressor according to claim 1, comprising, in series or in parallel, several convergent pressure reduction heads (C1), several convergent nozzles (C2), several cooling systems (R), and several divergent tubes (D) installed in a same envelope.6. The gas compressor according to claim 1, comprising a calming chamber (T) placed between said divergent tube (D) and said evacuation line.7. The gas compressor according to claim 1, wherein said means for bringing a low pressure entering gas at a high temperature, comprise means for heating said gas such as a burner (B), or heat exchangers (E1, E2, En) using recycled heat, or any other source of heat available, and an inlet chamber (C) placed between said means for heating and said convergent head (C1).8. The gas compressor according to claim 1, wherein said evacuation line comprises hot gas recycling equipment, recovery exchangers (E′1, E′2, E′n) equipment, and silencing equipment (S′) recovering an excess heat contained in exhausted gas and reducing a noise level, said equipments being eventually fed by only a part of the compressed gas.9. A gas compressor comprising:bringing means for bringing a low pressure entering gas at a high temperature; a convergent pressure reduction head (C1) for increasing a speed of said gas up to a sonic speed, said head being placed after said bringing means; a divergent supersonic pressure nozzle (D1) placed after said convergent pressure reduction head (C1) and aimed at increasing said gas speed to reach a supersonic flow; a transition zone (NT) placed after said divergent supersonic nozzle (D1); a convergent compression and cooling nozzle (C3) placed after said transition zone (NT) reducing said gas speed with continuation of cooling; a cooling system (R) comprising a set of liquid spray diffusers for spraying a liquid in said transition zone (NT) and in said convergent compression and cooling nozzle (C3); a convergent compression nozzle (C4) placed after said convergent compression and cooling nozzle (C3), in which said gas speed continues to decrease; a divergent tube (D) placed after said convergent compression nozzle (C4) for compressing said gas by reducing its speed to a normal subsonic outflow speed; and an evacuation line in which said gas is at a lower temperature and at a higher pressure. 10. The gas compressor as claimed in claim 9, wherein the set of liquid spray diffusers comprises a set of diffusers distributed radialy on sections perpendicular to the gas flow, placed in an inlet of said convergent compression and cooling nozzle (C3) or in said transition zone (NT).11. The gas compressor as claimed in claim 10, wherein said convergent head (C1) and said divergent supersonic nozzle (D1) comprises a convergent nozzle followed by a divergent nozzle, both with a variable geometry, for enabling a section of a neck therebetween to be adjusted according to a flow and temperature of the gas to be compressed.12. The gas compressor as claimed in claim 10, wherein any of said convergent compression and cooling nozzles (C3), of said convergent compression nozzle (C4), and of said divergent tube (D) have a variable geometry, which enables a section of a neck therebetween to be adjusted according to the flow, temperature, and pressure of the gas to be compressed.13. The gas compressor as claimed in claim 11, wherein said convergent compression and cooling nozzle (C3), said convergent compression nozzle (C4), and said divergent tube (D) have a variable geometry, which enables a section of a neck therebetween to be adjusted according to a flow, temperature, and pressure of the gas to be compressed.
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