Examination of aluminum tubing pitted in stagnant water

Author: Gray, R. J.
Published: United States : [publisher not identified], 1977.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1977.
Physical Description: microfiche : negative ; 11 x 15 cm
Additional Creators: Crouse, R. S., DeVan, J. H., and Griess, J. C.

Availability

Finding items...

Summary

A demonstration is being conducted to determine the feasibility of an Annual Cycle Energy System (ACES) as an energy balance system for heating and cooling a house. The thermal storage consists of water in a 19 x 17.5 x 7.5 ft (18,655 gal) tank. During the winter season, heat for the house would be extracted from the water thereby converting the water to ice. During the summer, the ice would provide the space cooling. A part of the initial demonstration involved the testing of series 1100 /sup 1///sub 2/-in.-diam. aluminum alloy, finned tubing as the basic thermal transfer via a 15% methanol brine solution. During this demonstration, corrosion pits developed and penetrated the aluminum alloy tubing as pinholes in several locations. An investigation of some probable causes of the pinholes is reported. This examination includes optical and scanning electron microscopy displays of the holes as well as energy dispersive x-ray analyses of the products contiguous to the holes.

Report Numbers

CONF-770735-3

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

DOE contract number: W-7405-ENG-26
OSTI Identifier 6738145
Research organization: Oak Ridge National Lab., TN (USA).

View MARC record | catkey: 44261027