The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2008
Filed:
Jan. 31, 2005
Applicants:
James P. Licari, Rochester, MN (US);
Hal H. Ottesen, Mazeppa, MN (US);
Jim Walters, Rochester, MN (US);
Inventors:
James P. Licari, Rochester, MN (US);
Hal H. Ottesen, Mazeppa, MN (US);
Jim Walters, Rochester, MN (US);
Assignee:
Regents of the University of Minnesota, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03G 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hybrid energy system heats or cools a plant with a geothermal unit powered at least partly by a fuel cell, which may also power other devices. The thermal fluid for the geothermal unit also cools the fuel cell via a heat exchanger. A digital controller bypasses a variable portion of the thermal fluid around the heat exchanger to regulate the fuel-cell temperature.