Caracterización del IHX en un sistema de refrigeración automotriz y el COP con refrigerante R134A

  • Bolívar Cuaical
  • Paúl Montúfar


The present work has the objective of characterizing several coaxial heat exchanger geometries in an automotive cooling system and its effect on the performance coefficient, using R-134a as refrigerant by means of experimental tests. In the first instance, the experimental tests were carried out with different geometries of coaxial interchanges involved in the high-pressure line between the condenser and the expansion valve, as well as the low pressure line between the evaporator and the compressor, Between the volume of the exchanger and the coefficient of performance by means of a multifactorial analysis. The development of the research entails complying with parameters for the acquisition of experimental data and the development of an adequate experimental design.  Statistical regressions  were  developed  with  R2  of  86.86%  and  a standard deviation of 2.2 for the low-pressure zone, while for the high pressure zone The regression determined a R2 of 95.17% and a standard deviation of 0.57. As for the COP and the T variables is statistically significant with a value of R2 of 99.97%, thus helping to design the heat exchangers to decrease fuel consumption in vehicles.

Index Terms : IHX,COP, R-134a, Cooling cycle Automotive, heat exchangers


Bernal, J. J. (17 de 04 de 2017). pdcahome. Obtenido de pdcahome: o-de-experimentos-para-que-sirve-y- como-realizarlo/

Brow, J. S., Yana, S. F., & Prior, D. A. (2002). Comparitive analysis of an

automotive air conditioning systems operating with CO2 and R134a. International Journal of Refrigeration, 19–32.

Cengel. (2007). Termodinámica. Mc Graw Hill.

MACS. (06 de Enero de 2017). Mobility Air Conditionig Society. Obtenido de
/2013/08/02/what-is-an-internal-heat- exchanger/

Mota-Babiloni, A., Navarro-Esbrí, J., Barragán-Cervera, Á., Molés, F., & Peris, B. (2014). Analysis based on EU Regulation No 517/2014 of new HFC/HFO mixtures as alternatives of high GWP refrigerants in refrigeration and HVAC systems. International Journal of Refrigeration, 21-31.