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Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer

Turbocharger is a device installed on an internal combustion engine to boost its thermal efficiency. A turbocharger consists of three main components, namely the turbine, central housing, and compressor. The common material for commercial turbine housing is cast iron, for its lower cost yet resilien...

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Main Authors: Mohammad, Mahadhir, Chiong, Meng Soon, Tan, Feng Xian, Rajoo, Srithar, Md. Sah, Muhammad Hanafi
Format: Conference or Workshop Item
Language:English
Published: 2022
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/103781/1/ChiongMengSoon2022_EffectofAddingCeramicThermalBarrier.pdf
http://eprints.utm.my/103781/
http://dx.doi.org/10.1088/1742-6596/2217/1/012077
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spelling my.utm.1037812023-11-26T06:33:05Z http://eprints.utm.my/103781/ Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer Mohammad, Mahadhir Chiong, Meng Soon Tan, Feng Xian Rajoo, Srithar Md. Sah, Muhammad Hanafi TP Chemical technology Turbocharger is a device installed on an internal combustion engine to boost its thermal efficiency. A turbocharger consists of three main components, namely the turbine, central housing, and compressor. The common material for commercial turbine housing is cast iron, for its lower cost yet resilience at elevated temperature. Given the high exhaust temperature a turbocharger is exposed to, energy loss in the form of heat transfer is inevitable. It is known to H turbine efficiency by up to 30%. This research aims to determine the turbocharger efficiency in the presence of thermal barrier coating (TBC) on the inner surface of turbine volute. Particularly, this work will focus on the internal and external heat transfer of the turbine and its impact on efficiency. The subject turbocharger is a commercial single-scroll vaneless unit commonly used in gasoline passenger vehicle. Yttria-Stabilized Zirconia (YSZ) is chosen as the TBC material, due to high melting point (around 2700°C), good thermal insulation property and very low thermal expansion compared to other ceramic materials. The YSZ was applied to the inner surface of turbine volute via plasma coating technique. However, due to the large disparity in thermal expansion between YSZ and cast iron, the TBC is prone to cracking at elevated exhaust temperature. Thus, an Inconel 718 turbine housing, with closer thermal expansion to YSZ, was refabricated for the use of this study The turbocharger performance was experimentally measured on the LoCARtic turbocharger gas stand. The turbine inlet temperature (TIT) was varied at 150, 350, 550, 650 and 750°C, while the compressor operating condition was maintained throughout the testing for equivalent comparison. From the result, the turbocharger efficiency drops when TIT is increased, and the turbine pressure ratio becomes lower. Overall, the external heat transfer loss is found to reduce 7% to 40% and no significant difference noticed on the internal heat transfer. 2022 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/103781/1/ChiongMengSoon2022_EffectofAddingCeramicThermalBarrier.pdf Mohammad, Mahadhir and Chiong, Meng Soon and Tan, Feng Xian and Rajoo, Srithar and Md. Sah, Muhammad Hanafi (2022) Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer. In: 16th Asian International Conference on Fluid Machinery, AICFM 2021, 13 September 2021 - 15 September 2021, Virtual, Online. http://dx.doi.org/10.1088/1742-6596/2217/1/012077
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Mohammad, Mahadhir
Chiong, Meng Soon
Tan, Feng Xian
Rajoo, Srithar
Md. Sah, Muhammad Hanafi
Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer
description Turbocharger is a device installed on an internal combustion engine to boost its thermal efficiency. A turbocharger consists of three main components, namely the turbine, central housing, and compressor. The common material for commercial turbine housing is cast iron, for its lower cost yet resilience at elevated temperature. Given the high exhaust temperature a turbocharger is exposed to, energy loss in the form of heat transfer is inevitable. It is known to H turbine efficiency by up to 30%. This research aims to determine the turbocharger efficiency in the presence of thermal barrier coating (TBC) on the inner surface of turbine volute. Particularly, this work will focus on the internal and external heat transfer of the turbine and its impact on efficiency. The subject turbocharger is a commercial single-scroll vaneless unit commonly used in gasoline passenger vehicle. Yttria-Stabilized Zirconia (YSZ) is chosen as the TBC material, due to high melting point (around 2700°C), good thermal insulation property and very low thermal expansion compared to other ceramic materials. The YSZ was applied to the inner surface of turbine volute via plasma coating technique. However, due to the large disparity in thermal expansion between YSZ and cast iron, the TBC is prone to cracking at elevated exhaust temperature. Thus, an Inconel 718 turbine housing, with closer thermal expansion to YSZ, was refabricated for the use of this study The turbocharger performance was experimentally measured on the LoCARtic turbocharger gas stand. The turbine inlet temperature (TIT) was varied at 150, 350, 550, 650 and 750°C, while the compressor operating condition was maintained throughout the testing for equivalent comparison. From the result, the turbocharger efficiency drops when TIT is increased, and the turbine pressure ratio becomes lower. Overall, the external heat transfer loss is found to reduce 7% to 40% and no significant difference noticed on the internal heat transfer.
format Conference or Workshop Item
author Mohammad, Mahadhir
Chiong, Meng Soon
Tan, Feng Xian
Rajoo, Srithar
Md. Sah, Muhammad Hanafi
author_facet Mohammad, Mahadhir
Chiong, Meng Soon
Tan, Feng Xian
Rajoo, Srithar
Md. Sah, Muhammad Hanafi
author_sort Mohammad, Mahadhir
title Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer
title_short Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer
title_full Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer
title_fullStr Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer
title_full_unstemmed Effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer
title_sort effect of adding ceramic thermal barrier coating on the turbocharger efficiency, external and internal heat transfer
publishDate 2022
url http://eprints.utm.my/103781/1/ChiongMengSoon2022_EffectofAddingCeramicThermalBarrier.pdf
http://eprints.utm.my/103781/
http://dx.doi.org/10.1088/1742-6596/2217/1/012077
_version_ 1783876415538593792
score 13.211869

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