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Measured and predicted performance of a R134a evaporator with uniform air flow.

Author(s) : TIMONEY D. J., RYAN A. M., FOLEY P. J., ARIGHO J.

Summary

The paper reports results from a programme of experimental and analytical work aimed at the development of a reliable performance simulation model for cross-flow evaporators which involve heat transfer between refrigerant R134a and a non-uniform air flow. Predicted results from the current version of the simulation program are presented and compared with rig measurements. Results are presented conducted with a single-circuit plate-finned-tube heat exchanger.These are compared with simulation predictions. The model predicts trends satisfactorily but consistently over-estimates the refrigerant outlet temperature and degree of superheat and hence the thermal capacity. The latter is over-estimated. Refrigerant pressure drops are also well predicted.

Details

  • Original title: Measured and predicted performance of a R134a evaporator with uniform air flow.
  • Record ID : 1997-0180
  • Languages: English
  • Source: Proceedings of the 2nd European Thermal-Sciences (EUROTHERM) and 14th UIT National Heat Transfer Conference 1996.
  • Publication date: 1996/05/29
  • Document available for consultation in the library of the IIR headquarters only.

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