Experimental data on local heat transfer coefficient and pressure drops are reported for refrigerants R-11 and R-113 condensing in the shear dominated regime inside an annular vertical duct. These data are compared with results from an analysis similar to that established for forced convection condensation inside pipes: calculated heat transfer data are conservative, with a mean deviation around 15%. Similar predictions can be obtained from semiempirical equations proposed for circular ducts.
FORCED CONVECTION CONDENSATION OF REFRIGERANTS INSIDE A VERTICAL ANNULUS.
CAVALLINI, ALBERTO;FRIZZERIN, SERGIO;ROSSETTO, LUISA
1983
Abstract
Experimental data on local heat transfer coefficient and pressure drops are reported for refrigerants R-11 and R-113 condensing in the shear dominated regime inside an annular vertical duct. These data are compared with results from an analysis similar to that established for forced convection condensation inside pipes: calculated heat transfer data are conservative, with a mean deviation around 15%. Similar predictions can be obtained from semiempirical equations proposed for circular ducts.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
