Patents Assigned to Indoor Air Quality Engineering
  • Coolness storage for fixed capacity refrigeration system
    Patent number: 5860287
    Abstract: A coolness storage system for a closed loop refrigeration system having a fixed capacity compressor wherein a phase change material (PCM) in a plurality of chambers around conduit runs arranged in parallel in an evaporator in the system alternately freezes and thaws to modulate the cooling effect on process air flow through the evaporator when the compressor is not operating and to extend the duration of compressor off time.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: January 19, 1999
    Assignee: Indoor Air Quality Engineering
    Inventor: Edward J. O'Neal
  • Air conditioning and heat pump system utilizing thermal storage
    Patent number: 5372011
    Abstract: A method and apparatus for controlling temperature and humidity of an air stream by chilling a cold storage material and warming a heat storage material by evaporation and condensation respectively from a fixed capacity refrigeration cycle, and selectively cooling and warming the air stream by controlled heat transfer from the cold and heat storage materials.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: December 13, 1994
    Assignee: Indoor Air Quality Engineering, Inc.
    Inventor: Edward J. O'Neal