CONVECTIVE HEAT TRANSFER WITH CROSS-FLOW MEMBRANE TUBES/ KONVEKTIVER WAERMEUEBERGANG BEI QUERANGESTROEMTEN MEMBRANROHREN.

INVESTIGATIONS HAVE BEEN CARRIED OUT TO COMPARE THE INTENSITY OF HEAT TRANSFER IN BOILER MEMBRANE BUNDLES. CORRELATIONSHAVE BEEN ESTABLISHED WHICH DESCRIBE THE RELATIONSHIP OF THE NUSSELT NUMBER AND THE OPERATING PARAMETERS OF THE BUNDLESAND ALSO THE DISTRIBUTION OF THE LOCAL NUSSELT VALUES IN THE EXTERNAL TUBE AND FIN CIRCUMFERENCE. THE EFFECT OF THE GEOMETRICAL SHAPE OF THE SYSTEM AND OF THE HEAT TRANSFER INTENSITY ON THE TEMPERATURE DISTRIBUTION THROUGHOUT THE TUBE AND FIN CROSS-SECTION HAS BEEN DETERMINED ON THE BASIS OF MEASUREMENT RESULTS. IN GERMAN.