Experimental study of the heat transfer in the intermittent horizontal two-phase flow pattern / Estudo experimental da transferencia de calor no escoamento bifasico intermitente horizontal

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The main objective of the present work is the experimental measurement of the two-phase heat transfer coefficient in the intermittent horizontal gas-liquid flow pattern. This flow pattern is very common in oil production pipelines. In order to reach this objective, an experimental apparatus was built, consisting of a test section fed with an air-water mixture pre-heated at different pairs of inlet flow rates and temperatures. In order to realize the heat transfer, the pipe was surrounded by a jacket containing cold water under various inlet flow rates and temperatures, forming with the central pipe a heat transfer section of parallel current. The experimental methodology consisted of measuring the heat transfer rate from the internal to the external fluid, and from the average difference of the temperature between the hot fluid and the pipe wall, determine the heat transfer coefficient between the hot fluid and the pipe wall for each cast of operating condition. The procedure was carried through for both single phase and two-phase tests. The results of the heat transfer coefficients between the hot fluid were compared with some correlations and existing models and presented satisfactory results

ASSUNTO(S)

calor - coeficiente de transferencia heat transfer calor - transferência two phase flow piping escoamento multifasico heat convection calor - convecção multiphase flow heat transfer coefficient escoamento bifasico

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