Patents Assigned to Ground Air, Inc.
  • Ground source cooling system
    Patent number: 5509462
    Abstract: The present invention relates to one or more ground tubes connected and channelized to provide a counter-flow heat exchanger with an annular space to permit water injection into the subsurface water table.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: April 23, 1996
    Assignee: Ground Air, Inc.
    Inventors: Michael Demko, David Blumentritt, Robin Zapalac