Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
STUDY AND DIMENSIONING OF A COIL TYPE HEAT EXCHANGER IN A VEHICULAR PNEUMATIC BRAKE SYSTEM
Submission Author:
Carlos Henrique De Paula Junior , RJ
Co-Authors:
Carlos Henrique De Paula Junior , luiz carlos cordeiro junior
Presenter: Carlos Henrique De Paula Junior
doi://10.26678/ABCM.COBEM2019.COB2019-0658
Abstract
The present work aims a thermal analysis in a coil type heat exchanger, used in a vehicle with pneumatic brake system. In this analysis, the thermal mapping was constructed with the vehicle in the static and dynamic conditions, within the facilities of the Mechanics Laboratory / UERJ / Unit Resende. The analysis of calories by means of the global coefficient of heat transfer, natural and forced convection, as well as the external and internal patterns of linear and helical transfer (coil) were considered in these studies. We also considered analyzes by logarithmic mean method of temperature differences (MLDT) and the ɛ-Nut effectiveness method. The coil monitoring conditions were established with a continuous internal compressed air flow through the motor compressor, and the external air flow is simulated by a centrifugal fan with pre-defined speeds for analysis. For study purposes, atmospheric air was considered ideal, neglecting the possible thermal effects generated by the contaminants (water and oil) and or incrustations inside the heat exchanger piping. The result of this research served to better understand the design, the application of this heat exchanger, the influence of the geometric effects in its construction for thermal exchange.
Keywords
Heat exchanger, coil designer, vehicular pneumatic brake
