LAWRENCE C HOAGLAND
Engineering in Ctr Harbor, NH
License number
Massachusetts 15431
Issued Date
Mar 8, 1961
Expiration Date
Jun 30, 2002
Type
Mechanical Engineer
Address
Address
Ctr Harbor, NH 03226
Professional information
Heat Exchanger Having High Moisture Transfer Capability In High Relative Humidity Air
US Patent:
6408932, Jun 25, 2002
Filed:
Mar 10, 2000
Appl. No.:
09/523352
Inventors:
Donald F. Steele - Cohasset MA
Lawrence C. Hoagland - Center Harbor NH
Lawrence C. Hoagland - Center Harbor NH
Assignee:
Airxchange, Inc. - Rockland MA
International Classification:
F23L 1502
US Classification:
165 8, 165 10
Abstract:
A regenerator energy exchange device comprises an energy recovery wheel having interchangeable segments of a heat and moisture exchange matrix material. Each segment may include one or more desiccants having different moisture adsorption characteristics deposited thereon. Alternatively, the energy recovery wheel may contain a matrix which is uniformly coated with at least two different desiccants. In still another embodiment, the wheel may have zones of different desiccants or desiccant combinations which are arranged in series in the direction of air flow through the matrix to provide different moisture adsorption characteristics along the air flow path. The zone closest to a highly humid airstream may contain, for example, a type 5 desiccant, while the zone closest to a conditioned exhaust airstream may contain a type 3 desiccant. All configurations are designed to increase the effectiveness of the energy recovery device over the middle to high range of relative humidities.
Regenerator Heat Exchanger Having One Or More Adjustable Performance Characteristics
US Patent:
5937933, Aug 17, 1999
Filed:
Oct 24, 1996
Appl. No.:
8/736382
Inventors:
Donald F. Steele - Cohasset MA
Lawrence C. Hoagland - Center Harbor NH
Lawrence C. Hoagland - Center Harbor NH
Assignee:
AirXchange, Inc. - Rockland MA
International Classification:
F23L 1502
US Classification:
165 10
Abstract:
A rotary heat regenerator wheel in which one or more performance characteristics, such as heat exchange efficiency and air flow rate, can be adjusted during manufacturing, during or after installation and/or after use of the regenerator. The wheel comprises removable segments having differing performance characteristics. One embodiment of the regenerator wheel includes segments containing both latent and sensible heat exchange material. Latent heat transfer efficiencies between those provided by heat regenerators having segments made only of sensible heat exchange material, and by regenerators having segments made only of latent heat exchange material, are achieved by adjusting the ratio of segments with exposed surface area of latent heat exchange material relative to segments having exposed surface area of the sensible heat exchange material. In another embodiment the air flow, pressure drop or surface area density of the wheel can be adjusted by using segments having different surface area densities.
Desiccant Heat Device
US Patent:
4875520, Oct 24, 1989
Filed:
Jul 8, 1988
Appl. No.:
7/219834
Inventors:
Donald F. Steele - Cohasset MA
Lawrence C. Hoagland - Center Harbor NH
Christopher Kyricos - Cohasset MA
Peter Tolan - Scituate MA
Lawrence C. Hoagland - Center Harbor NH
Christopher Kyricos - Cohasset MA
Peter Tolan - Scituate MA
Assignee:
Airxchange, Inc. - Rockland MA
International Classification:
F28D 1900, B01D 5306
US Classification:
165 10
Abstract:
A rotary regenerative heat wheel having a heat exchange matrix comprised of a spirally wound strip of plastic having a coating of dry desiccant affixed thereto. The quantity of desiccant affixed to the strip is selected so that the sensible and latent heat transfer efficiencies of the wheel are relatively high and approximately equal. An apparatus and method are disclosed for applying a desiccant coating to a sheet of plastic.