Electrochemical system with real time modification of composition and use of complex wave form in same

摘要

An electrochemical compression system of a refrigeration system (10, fig 1A) comprises an electrochemical cell 13 comprising a membrane electrode assembly having a low 52 and high pressure side 54, a first electrode 42 on the low pressure side, a second electrode 44 on the high pressure side and an ion exchange material 40 between the electrodes. The electrochemical cell has an operating voltage across the first electrode and second electrode and a controller 30 controls the operating voltage applied to the electrochemical cell whereby the electrochemical cell operates in a 1st (high) voltage mode (compression mode) and operates in a 2nd voltage mode (electrolysis mode) lower than 1st voltage, and wherein a working fluid is pumped from the low pressure side to the high pressure side of the electrochemical cell when the electrochemical cell is operating in a compression mode. In the electrolysis mode in situ hydrogen is produced on the low pressure side and in the compression mode the in situ hydrogen reacts on the first electrode to produce a plurality of protons. The controller may have a control program that automatically controls the operating voltage waveform as a function of sensor input (48, 48).