Water electrolysis system

摘要

A water electrolysis system includes a water electrolysis cell stack having an anode and a cathode. A water storage tank having an outlet is disposed above the cell stack and communicates with an inlet of one of the anode and the cathode of the cell stack for gravity feeding water from the water storage tank to the cell stack. A phase separator is disposed below and in communication with the water storage tank. The phase separator has an inlet for receiving a two phase stream including water and product gas exiting an outlet of the one of the anode and cathode of the cell stack, and includes a conduit having a lower end disposed within the phase separator for receiving water recovered in the phase separator. The conduit has an upper end extending into the water storage tank. Further, the conduit defines a plurality of openings along a portion of the conduit disposed in the phase separator such that the product gas received in the inlet of the phase separator enters the inside of the conduit through the openings and entrains and lifts water upwardly therewith through the conduit and into the water storage tank whereby water is recirculated through the cell stack.