Pressure exchangers

Claim 1

PRESSURE EXCHANGER PLANT OPERABLE TO PRODUCE AN OUTPUT OF HIGH-TEMPERATURE FLUID AND AN OUTPUT OF LOWTEMPERATURE FLUID, THE PLANT INCLUDING CELL RING MEANS COMPRISING AT LEAST ONE CELL RING INCLUDING A PLURALITY OF CELLS, END-PLATE STRUCTURE AT EACH END OF THE CELL RING EFFECTIVE TO CLOSE OFF THE ENDS OF THE CELLS BUT HAVING PORTS THEREIN FOR THE ADMISSION OF FLUID TO AND THE EXTRACTION OF FLUID FROM THE CELLS, MEANS TO EFFECT ROTATION OF THE CELL RING RELATIVE TO THE END-PLATE STRUCTURE, THE CELL RING MEANS HAVING A HIGH-TEMPERATURE HIGH-PRESSURE COMPRESSION STAGE, A HIGH-TEMPERATURE LOW-PRESSURE SCAVENGING STAGE, A LOW-TEMPERATURE HIGH-PRESSURE COMPRESSION STAGE AND A LOW-TEMPERATURE LOW-PRESSURE SCAVENGING STAGE, EACH ONE OF SAID COMPRESSION AND SCAVENGING STAGES INCLUDING A PORT FOR THE ADMISSION OF FLUID TO THE CELLS AND A PORT FOR THE EXTRACTION OF FLUID FROM THE CELLS, DUCTING TO CONNECT THE OUTLET PORT OF THE HIGH-TEMPERATURE HIGH-PRESSURE COMPRESSION STAGE TO THE INLET PORT OF THE LOW-TEMPERATURE HIGH-PRESSURE COMPRESSION STAGE, COOLING MEANS INTERPOSED IN SAID DUCTING, FURTHER DUCTING TO CONNECT THE OUTLET PORT OF THE LOW-TEMPERATURE HIGH-PRESSURE COMPRESSION STAGE TO THE INLET PORT OF THE HIGH-TEMPERATURE HIGHPRESSURE COMPRESSION STAGE, HEATING MEANS INTERPOSED IN SAID FURTHER DUCTING, THE HIGH-TEMPERATURE HIGH-PRESSURE COMPRESSION STAGE BEING SEQUENTIAL TO AND PRECEDING THE HIGH-TEMPERATURE LOW-PRESSURE SCAVENGING STAGE AND THE LOW-TEMPERATURE HIGH-PRESSURE COMPRESSION STAGE BEING SEQUENTIAL TO AND PRECEDING THE LOW-TEMPERATURE LOWPRESSURE SCAVENGING STAGE IN THE DIRECTION OF ROTATION OF THE CELL RING MEANS RELATIVE TO THE END-PLATE STRUCTURE.