Enhanced Evaporative Surface for Two-Phase Mounting Plates McDonnell Douglas Corporation, St. Louis, MO

Format:

Conference/Event

Author/Creator:

Grote, M. G., author.

Conference Name:

Intersociety Conference on Environmental Systems (1986-07-14 : San Diego, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1986

Summary:

This paper describes an enhancement to a grooved, evaporative surface for two-phase mounting plates. These equipment mounting plates could be used in two-phase thermal control systems such as that on the proposed Space Station.An aluminum plate is machined with fine, rectangular grooves (39 grooves/cm). This grooved surface is then enhanced by an inexpensive process called Ivadizing (equipment for this process is patented by McDonnell Douglas). During Ivadizing, aluminum is vapor deposited onto the surface, forming a slightly porous coating on the land area between the grooves. The resulting surface has a much larger evaporative heat transfer coefficient and capillary pumping ability than that with plain, rectangular grooves.We have used Ivadizing to enhance a mounting plate evaporative surface. Tests of this plate with R-11 showed improvement in evaporative heat transfer coefficient by a factor of 4. Analytic studies show that this enhanced surface should have at least three times the capillary pumping capacity of the rectangular grooved surface

Notes:

Vendor supplied data

Publisher Number:

860979

Access Restriction:

Restricted for use by site license