Chad C Harris

US Patent:

6892802, May 17, 2005

Filed:

Oct 25, 2001

Appl. No.:

10/003882

Inventors:

Kevin W. Kelly - Baton Rouge LA, US
Chad R. Harris - Pearland TX, US
Mircea S. Despa - Corning NY, US

Assignee:

Board of Supervisors of Louisiana State University and Agricultural and Mechanical College - Baton Rouge LA

International Classification:

F28F007/02

US Classification:

165148, 165165, 165DIG 395

Abstract:

An extremely high efficiency, cross flow, fluid-fluid, micro heat exchanger and novel method of fabrication using electrode-less deposition is disclosed. To concurrently achieve the goals of high mass flow rate, low pressure drop, and high heat transfer rates, the heat exchanger comprises numerous parallel, but relatively short microchannels. Typical channel heights are from a few hundred micrometers to about 2000 micrometers, and typical channel widths are from around 50 micrometers to a few hundred micrometers. The micro heat exchangers offer substantial advantages over conventional, larger heat exchangers in performance, weight, size, and cost. The heat exchangers are especially useful for enhancing gas-side heat exchange. The use of microchannels in a cross-flow micro-heat exchanger decreases the thermal diffusion lengths substantially, allowing substantially greater heat transfer per unit volume or per unit mass than has been achieved with prior heat exchangers.

US Patent:

20050269068, Dec 8, 2005

Filed:

Apr 20, 2005

Appl. No.:

11/110113

Inventors:

Kevin Kelly - Baton Rouge LA, US
Chad Harris - Pearland TX, US
Mircea Despa - Baton Rouge LA, US

International Classification:

F28D001/04

US Classification:

165165000

Abstract:

An extremely high efficiency, cross flow, fluid-fluid, micro heat exchanger and novel method of fabrication using electrode-less deposition is disclosed. To concurrently achieve the goals of high mass flow rate, low pressure drop, and high heat transfer rates, the heat exchanger comprises numerous parallel, but relatively short microchannels. Typical channel heights are from a few hundred micrometers to about 2000 micrometers, and typical channel widths are from around 50 micrometers to a few hundred micrometers. The micro heat exchangers offer substantial advantages over conventional, larger heat exchangers in performance, weight, size, and cost. The heat exchangers are especially useful for enhancing gas-side heat exchange. The use of microchannels in a cross-flow micro-heat exchanger decreases the thermal diffusion lengths substantially, allowing substantially greater heat transfer per unit volume or per unit mass than has been achieved with prior heat exchangers.