Study of In-Tube Evaporation Heat Transfer of Carbon Dioxide.
Study of In-Tube Evaporation Heat Transfer of Carbon
Dioxide.
(424 K)
Sawant, N. N.; Kim, M. S.; Payne, W. V.; Domanski, P.
A.; Hwang, Y. W.
ICR0038;
Refrigeration International Congress, 21st IIR.
(IRC2003). Technical Session B1-8: A New Old
Refrigerant: Carbon Dioxide - Heat Transfer.
Proceedings. August 17-22, 2003, Washington, DC, 2004.
Keywords:
carbon monoxide; heat transfer; evaporation;
uncertainty; refrigerants
Abstract:
The evaporative heat transfer characteristics of carbon
dioxide in an 8.0 mm ID smooth stainless steel tube were
measured. Data were collected in a concentric tube heat
exchanger heated by water in the annulus with carbon
dioxide in the central tube. Data have been collected
over a range of temperature (5oC to 25oC), mass flux
(250 kg/m2s to 1000 kg/m2s) and heat flux (3 kW/m2 to 15
kW/m2). A Wilson Plot technique was used to correlate
the in-tube local heat transfer coefficient of carbon
dioxide. Results have been interpreted by relating the
heat transfer coefficient to quality at various
evaporation temperatures and various mass fluxes.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899