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Assessment of condensation heat transfer correlations in the modelling of fin and tube heat exchangers.

Author(s) : VERA-GARCÍA F., GARCÍA-CASCALES J. R., CORBERÁN-SALVADOR J. M., et al.

Type of article: Article, IJR article

Summary

This is the second paper of a series that assesses the performance of a refrigeration system model by means of cycle parameters (See also this Bulletin, references 2007-2520 and 2525). In this case, the condensation temperature is the parameter to study and it is focused on fin and tube condensers. It also studies the influence of the heat transfer models on the estimation of this refrigeration cycle parameter and different correlations for the heat transfer coefficients have been implemented in order to characterise the heat transfer in the heat exchangers. The flow inside the heat exchangers is considered one-dimensional as in previous works. In the cycle definition, other submodels for all the cycle component have been taken into account to complete the system of equations that characterises the behaviour of the refrigeration cycle. This global system is solved by means of a Newton-Raphson algorithm and a known technique called SEWTLE is used to model the heat exchangers. Some experimental results are employed to compare the condensation temperatures provided by the numerical procedure and to evaluate the performance of each heat transfer coefficient. These experimental results correspond to an air-to-water heat pump and are obtained by using R-22 and R-290 as refrigerants.

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Pages: 1018-1028

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Details

  • Original title: Assessment of condensation heat transfer correlations in the modelling of fin and tube heat exchangers.
  • Record ID : 2007-2521
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 6
  • Publication date: 2007/09

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