Heat Transfer Correction Methods for Turbocharger Performance Measurements
- 13 September 2016
- journal article
- Published by ASME International in Journal of Engineering for Gas Turbines and Power
- Vol. 139 (2), 022602
- https://doi.org/10.1115/1.4034234
Abstract
Turbocharger performance maps used for the matching process with a combustion engine are measured on test benches which do not exhibit the same boundary conditions as the engine. However, these maps are used in engine simulations, ignoring that the compressor and turbine aerodynamic performance is rated on the basis of quantities which were measured at positions which do not coincide with the respective system boundaries of the turbomachinery. In the operating range of low to mid engine speeds, the ratio between the heat flux and the work done by the turbine and the compressor is much greater than at high speeds where heat transfer phenomena on the compressor side can usually be neglected. Heat losses on the turbine side must be taken into account even at higher shaft speeds when dealing with isentropic turbine efficiencies. Based on an extensive experimental investigation, a one-dimensional heat transfer model is developed. The compressor and turbine side are treated individually and divided into sections of inlet, wheel, outlet, diffuser, and volute. The model demonstrates the capability to properly account for the impact of heat transfer, and thereby improves the predictive accuracy of temperatures relevant for the matching process.Keywords
This publication has 9 references indexed in Scilit:
- Determination of heat flows inside turbochargers by means of a one dimensional lumped modelMathematical and Computer Modelling, 2013
- Importance of Heat Transfer Phenomena in Small Turbochargers for Passenger Car ApplicationsSAE International Journal of Engines, 2013
- Heat transfer analysis in a turbocharger turbine: An experimental and computational evaluationApplied Thermal Engineering, 2012
- An experimental procedure to determine heat transfer properties of turbochargersMeasurement Science and Technology, 2010
- The Analysis of Heat Transfer in Automotive TurbochargersJournal of Engineering for Gas Turbines and Power, 2010
- Analysis of Turbocharger Non-Adiabatic PerformancePublished by Elsevier BV ,2006
- Thermomechanical Analysis of a Turbocharger Based on Conjugate Heat TransferPublished by ASME International ,2005
- Conjugate Flow and Heat Transfer Investigation of a Turbo Charger: Part I — Numerical ResultsPublished by ASME International ,2003
- Modelling of a Turbocharger Turbine Under Pulsating Inlet ConditionsProceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 1996