PRESSURE DROP IN HEAT EXCHANGERS OF CIRCULAR AND ELLIPTICAL FINNED TUBES / QUEDA DE PRESSÃO EM PERMUTADORES DE CALOR DE TUBOS ELÍPTICOS E CIRCULARES ALETADOS

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

16/07/1981

RESUMO

Head loss coefficients were determined by an experimental procedure, in the flow normal to banks with one, two and three rows of tubes of circular or elliptical cross-section, with continuous fins. The coefficients were correlated as function of the Reynolds Number of the channel space between the fins, for the laminar and isothermical flow. The pressure field was measured in the flow direction and in the vicinity of the tubes at several flow rates. The results are reliable, and show a satisfactory degree of uncertainty. The geometry studied here is used in compact heat exchangers, mainly in air conditioning systems. The data gathered in this work may be useful in the evaluation of the pumping power necessary to maintain the flow trhough the bundle of finned tubes of a compact heat exchanger.

ASSUNTO(S)

trocadores de calor heat exchangers escoamento de fluidos fluid draining

ACESSO AO ARTIGO

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