An experimental study was performed that compared tube side condensation heat transfer characteristics of enhanced tubes (hydrophobic surface (HYD), herringbone micro fin (HB), and a composite hydrophobic/herringbone (micro fin) (HYD/HB)) to the performance smooth (ST). The coefficient (HTC) calculated from data were recorded for had an outer diameter (OD) 12.7 mm. Data collected (as function m...

Abstract This paper presents experimental data on heat transfer of a binary zeotropic mixture refrigerants R32/R134a in microchannel exchanger with high specific surface within range parameters that is practically important for the development cooling systems microelectronics and space technology. The experiments were carried out horizontal one-sided heating copper plate 20x40 mm, containing 21...

An ambitious programme to integrate TB and HIV services into single primary health care facilities and a R32 million European Union (EU)-funded treatment defaulter tracing project are among the chief mitigation weapons aimed at the TB pandemic this year. This emerged from an interview last month with the national director of the TB Control and Management Unit at the national health department, ...