Condensation of refrigerants on small tube bundles
Mabrey, Burlin Davis
Wanniarachchi, Amarawansa S.
MetadataShow full item record
The construction of an apparatus for the condensation performance testing of a horizontal bundle of four tubes with various refrigerants was completed. The apparatus was instrumented, and data reduction software was developed to provide bundle and single tube condensation data. Two tube bundles were tested, smooth copper tubes and low integral-fin copper-nickel tubes, with two refrigerants, R-114 and R-113. An enhancement ratio of about 2.0 for the overall heat transfer coefficient was demonstrated for the finned tubes over the smooth tubes. Internal contamination, possibly due to a breakdown of the refrigerant molecules when subjected to high temperatures in the boiling chamber, inhibited further meaningful data collection. Recommendations for improvement of the test apparatus are made.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Hobbs, Allen L. (Monterey, California. Naval Postgraduate School, 2000-09);A toroidal bubble is a vortex ring with a gas core in a liquid. Current interest in toroidal bubbles is partially due to the discovery that small toroidal bubbles can occur in the cavitation collapse of a spherical bubble ...
Denardo, Bruce (Naval Postgraduate School, Monterey, California, 2016-05);How Can a Submarine Sink and Rise? Cartesian Diver Hello. I’m Dr. Bruce Denardo here in the Physics Lecture Demonstrations Laboratory at the Naval Postgraduate School in Monterey, California. How can a submarine sink or ...
Heck, Jerome Ronald (Monterey, California. Naval Postgraduate School, 1970-09);The sophisticated vane shear apparatus for determining the shear strength of deep ocean sediment cores was modified so as to be portable and versatile for use In a laboratory and on board a ship. The apparatus utilizes ...