Condensor operated inverse thermosiphons
Abstract
A form of inverse thermosiphon is described and procedures for its use in thermal hydraulic design are outlined. The use of these procedures in the design of devices containing water as the working fluid is emphasized and charts for use in estimating performance developed. The use of an evaporator with a capillary surface is then examined and equations for the lift ratio as a function of circulation rate are derived both for a condenser with and without a capillary surface. Equations relating lift ratio to dryness fraction for use with systems using water are shown. It is noted that the temperature difference between the vapor in the principal and ancillary condensers can be a major factor governing design of these devices. Suitable fluids for use in the temperature range zero to 200C are then discussed.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 September 1978
 Bibcode:
 1978STIN...8013422C
 Keywords:

 Condensers (Liquefiers);
 Thermohydraulics;
 Thermosiphons;
 Capillary Flow;
 Convective Heat Transfer;
 Evaporators;
 Systems Engineering;
 Working Fluids;
 Fluid Mechanics and Heat Transfer