Abstract: A hydrogen energy system is provided for one or more buildings. The system includes a hydrogen generator; at least one zone controller for receiving and processing demands from at least one hydrogen user associated with at least one zone of the one or more buildings; and a unit controller for receiving and processing hydrogen demand data received from the at least one zone controller.
Type:
Grant
Filed:
February 14, 2005
Date of Patent:
June 13, 2006
Assignee:
Stuart Energy Systems, Inc.
Inventors:
Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
Abstract: An improved electrochemical system, comprising
(a) at least two cells in parallel electrical connection to constitute at least two cell stacks, each cell defining an anolyte chamber and a catholyte chamber, and including at least an anode electrode adjacent to the anolyte chamber, and a cathode electrode adjacent to the catholyte chamber;
(b) at least one unitary one piece double electrode plate having an electrically conducting frame, the anode electrode in one of the at least two cells being supported on a first portion of the electrically conducting frame, and the cathode electrode in one of the other of the at least two cells being supported on a second portion of the electrically conducting frame spaced from the first portion;
(c) at least two single electrode plates, each single electrode plate including an electrically conducting frame for supporting an anode electrode or a cathode electrode wherein the first and second portions of the double electrode plate include at least opposed faces;
(d) a me
Type:
Grant
Filed:
August 5, 1999
Date of Patent:
February 13, 2001
Assignee:
Stuart Energy Systems Inc.
Inventors:
Andrew T. B. Stuart, Raynald G. Lachance
Abstract: An improved process for providing hydrogen from an electrolytic cell having an anolyte solution having an anolyte liquid level; a catholyte solution having a catholyte liquid level; generating oxygen at an oxygen pressure above the anolyte level; generating hydrogen at a hydrogen pressure above the catholyte level; the improvement comprising detecting at least one of the anolyte and the catholyte liquid levels as anolyte level and catholyte level data; feeding the level data to central processing means; determining the pressure differential between the levels from the level data, and pressure adjustment data by the central processing means; and providing the adjustment data to pressure control means to maintain the pressure differential within a selected range. The process offers a low cost method of controlling the pressure differential to within 2 cm WC of a set point.
Type:
Grant
Filed:
September 1, 1999
Date of Patent:
November 14, 2000
Assignee:
Stuart Energy Systems Inc.
Inventors:
Matthew J. Fairlie, William J. Stewart, Charlie Dong