Patents by Inventor Wilfred L. Ayala

Wilfred L. Ayala has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Plate-type heat exchanger for exhaust gas heat recovery
    Patent number: 6470835
    Abstract: An exhaust gas heat recuperation system for use with a boiler is disclosed. The heat recuperation system includes a plate-type heat exchanger for exhaust gas heat recovery for exchanging heat between an exhaust gas and a charge gas. The heat exchanger preferably includes a series of exhaust gas plates stacked alternately with, and parallel to, a series of charge gas plates. Each of the exhaust gas plates and charge gas plates have raised contained ridges to form a substantially sinusoidal path for directing the respective gas therealong. The shape of the path reduces exhaust gas particulate deposition. The charge gas flows in a countercurrent to the exhaust gas to facilitate maximum heat transfer. The heat exchange is particularly useful in laminar flow conditions.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: October 29, 2002
    Assignee: Aqua-Chem, Inc.
    Inventors: Tod A. Stansfield, Wilfred L. Ayala, Stephen R. Wilkinson, Brian W. Huibregtse, Todd L. Anderson, Hyunjae Park
  • Plate type heat exchanger for exhaust gas heat recovery
    Patent number: 6357396
    Abstract: An exhaust gas heat recuperation system for use with a boiler is disclosed. The heat recuperation system includes a plate-type heat exchanger for exhaust gas heat recovery for exchanging heat between an exhaust gas and a charge gas. The heat exchanger preferably includes a series of exhaust gas plates stacked alternately with, and parallel to, a series of charge gas plates. Each of the exhaust gas plates and charge gas plates have raised contained ridges to form a substantially sinusoidal path for directing the respective gas therealong. The shape of the path reduces exhaust gas particulate deposition. The charge gas flows in a countercurrent to the exhaust gas to facilitate maximum heat transfer. The heat exchange is particularly useful in laminar flow conditions.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: March 19, 2002
    Assignee: Aqua-Chem, Inc.
    Inventors: Tod A. Stansfield, Wilfred L. Ayala, Stephen R. Wilkinson, Brian W. Huibregtse, Todd L. Anderson, Hyunjae Park