Appeal No. 2004-1125
Application No. 09/923,998
8. The heat exchanger component as recited in
claim 1 wherein said low surface energy coating is
monomolecular.
12. The heat exchanger component as recited in
claim 1 wherein said plurality of flow passages
include a plurality of interstices.
13. An [sic] refrigerant cycle comprising:
a compression device to compress a refrigerant to
a high pressure employing a lubricating oil;
a heat rejecting heat exchanger for cooling said
refrigerant including a plurality of condensing flow
passages with a monomolecular layer of a low surface
energy coating on a condensing surface to prevent said
lubricating oil from wetting said condensing surface
of said heat rejecting heat exchanger;
an expansion device for reducing said refrigerant
to a low pressure; and
a heat accepting heat exchanger for evaporating
said refrigerant including a plurality of evaporating
flow passages with a monomolecular layer of a low
surface energy coating on an evaporating surface of
said heat accepting heat exchanger to reduce a
wettability of oil on prevent said lubricating oil
from wetting said evaporating surface of said heat
rejecting accepting heat exchanger.
18. A method for lowering the surface energy of
a heat exchanger comprising the steps of coating a
surface of a plurality of flow passages of said heat
exchanger with a low surface energy substance in
solution and reducing a wettability of oil on said
plurality of flow passages.
19. The method as recited in claim 18 wherein
the step of coating said plurality of flow passages
includes flowing said solution through said plurality
of flow passages of said heat exchanger, draining said
solution from said plurality of flow passages of said
heat exchanger, and drying said plurality of flow
passage of said heat exchanger.
20. The heat exchanger component as recited in
claim 2 wherein said low surface energy substance is
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