TY - GEN
T1 - THERMOELECTRIC GENERATION FROM EXHAUST HEAT IN ELECTRIFIED NATURAL GAS TRUCKS - PART1
T2 - ASME 2022 International Mechanical Engineering Congress and Exposition, IMECE 2022
AU - Sok, Ratnak
AU - Kusaka, Jin
AU - Nakashima, Hisaharu
AU - Minagata, Hidetaka
N1 - Publisher Copyright:
Copyright © 2022 by ASME.
PY - 2022
Y1 - 2022
N2 - Thermoelectric generator (TEG) effectiveness in boosting hybridized, compressed natural gas (CNG) 3.0 L engines is demonstrated using a model-based development approach. Measured data from the corrugated fin-type TEG under different gas temperatures and mass flow rates are used for validating the model. The accurate TEG model can reproduce measured pressure loss, heat transfer, and thermal performance characteristics. Next, the model is integrated into the spark ignited CNG engine. Predicted engine performances are well-calibrated with measured data from the twin-turbocharged, mass-production engine used in light-duty delivery trucks. The engine model is validated with measured data for 35 conditions under the JE05 cycle (800-2800 RPM, 2.6 - 102 kW). The results show that the engine brake thermal efficiency (BTE) is improved by 0.56% using a 7× TEG module arrangement. A × 10 arrangement can enhance the BTE to 0.8%. Effective electrical power is generated up to 1.168 kW from the TEG, depending on JE05 operating regions, without significant power loss.
AB - Thermoelectric generator (TEG) effectiveness in boosting hybridized, compressed natural gas (CNG) 3.0 L engines is demonstrated using a model-based development approach. Measured data from the corrugated fin-type TEG under different gas temperatures and mass flow rates are used for validating the model. The accurate TEG model can reproduce measured pressure loss, heat transfer, and thermal performance characteristics. Next, the model is integrated into the spark ignited CNG engine. Predicted engine performances are well-calibrated with measured data from the twin-turbocharged, mass-production engine used in light-duty delivery trucks. The engine model is validated with measured data for 35 conditions under the JE05 cycle (800-2800 RPM, 2.6 - 102 kW). The results show that the engine brake thermal efficiency (BTE) is improved by 0.56% using a 7× TEG module arrangement. A × 10 arrangement can enhance the BTE to 0.8%. Effective electrical power is generated up to 1.168 kW from the TEG, depending on JE05 operating regions, without significant power loss.
KW - CNG hybrid engine
KW - Thermoelectric generator
KW - system efficiency
KW - waste heat recovery
UR - http://www.scopus.com/inward/record.url?scp=85148485843&partnerID=8YFLogxK
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U2 - 10.1115/IMECE2022-96245
DO - 10.1115/IMECE2022-96245
M3 - Conference contribution
AN - SCOPUS:85148485843
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Energy
PB - American Society of Mechanical Engineers (ASME)
Y2 - 30 October 2022 through 3 November 2022
ER -