Preliminary Air Heater Patents (Class 126/117)
  • Method and apparatus for preheating combustion air while cooling a hot process gas
    Patent number: 4044820
    Abstract: A heat transfer apparatus for cooling a hot process gas to a temperature close to its dew point without condensation. The hot gas passes through a first chamber while air to be heated passes in an adjacent second chamber. A series of fluid containing tubes extend back and forth between the two chambers. The fluid continuously flowing through the tubes extracts heat from the hot gas and transfers it to the air to be heated.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: August 30, 1977
    Assignee: Econo-Therm Energy Systems Corporation
    Inventor: Elon J. Nobles