Comparison of the two-stage and traditional single-stage thermoelectric generator in recovering the waste heat of the high temperature exhaust gas of internal combustion engine

Energy ◽  
2014 ◽  
Vol 77 ◽  
pp. 489-498 ◽  
Author(s):  
Xiuxiu Sun ◽  
Xingyu Liang ◽  
Gequn Shu ◽  
Hua Tian ◽  
Haiqiao Wei ◽  
...  
Keyword(s):  
High Temperature ◽  
Internal Combustion Engine ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Single Stage ◽  
Exhaust Gas ◽  
Two Stage

Simulation Research on the Application of Thermoelectric Waste Heat Recovery of Internal Combustion Engine

2010 ◽  
Author(s):  
Maohai Wang ◽  
Thomas Josef Daun ◽  
Yangjun Zhang ◽  
Weilin Zhuge
Keyword(s):  
Internal Combustion Engine ◽  
Waste Heat ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Parameter Study ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Simulation Research ◽  
Exhaust Gas Temperature ◽  
Engine Power

In this paper, the development of a thermoelectric generator (TEG) simulation model and its implementation into an internal combustion engine (ICE) system model are demonstrated. The TEG model is calibrated with respect to an experimental basis presented in a previously published paper. A TEG parameter study, an analysis of the overall system and the interaction between the TEG and the ICE are carried out. The simulation results indicate that the exhaust gas temperature has a much more significant influence on the TEG performance than the exhaust gas mass flow rate. Without considering the influence of additional backpressure, the application of a TEG shows potential to increase the effective engine power; thereby improving the overall efficiency by approximately 0.6 to 1.7% (depending on engine speed and load). However, when taking additional backpressure into account, this gain in effective engine power is reduced slightly, resulting in a change of the efficiency range to between 0.2 and 1.7%. This illustrates the importance of taking the backpressure into account when designing a real world TEG.

scholarly journals Analysis of thermal parameters of heat storages for use in vehicles with combustion engines

2019 ◽  
Vol 179 (4) ◽  
pp. 119-125
Author(s):  
Przemysław MĘŻYK ◽  
Grzegorz PRZYBYŁA ◽  
Karolina PETELA
Keyword(s):  
Internal Combustion Engine ◽  
Waste Heat ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Exhaust Gas ◽  
Combustion Engines ◽  
Winter Conditions ◽  
Military Vehicle ◽  
Combat Vehicle ◽  
The Impact

The propulsion system of a vehicle using an internal combustion engine generates a significant amount of waste heat during operation, which is almost entirely discharged into the environment without any useful effect. One of the ways of using waste heat is storing it, and then using, for example, when starting the engine in winter conditions. The application of the indicated solution, in particular for the combat vehicle will allow to reduce the effects of cold start and will shorten the time of preparing such a vehicle for combat operations. The article presents: types of heat accumulators that could be used in a military vehicle, the results of preliminary tests carried out on the test stand and the impact of an additional heat source on the time of heating the internal combustion engine and on emission of exhaust gas components.

scholarly journals Analysis of a Stirling engine in a waste heat recovery system with internal combustion engine

2021 ◽  
Vol 313 ◽  
pp. 13001
Author(s):  
Francesco Catapano ◽  
Carmela Perozziello ◽  
Bianca Maria Vaglieco
Keyword(s):  
Internal Combustion Engine ◽  
Waste Heat ◽  
Combustion Engine ◽  
Heat Content ◽  
Experimental Tests ◽  
Internal Combustion ◽  
Stirling Engine ◽  
Exhaust Gas ◽  
Compression Ignition Engine ◽  
Waste Heat Recovery System

This work aims to study a Stirling engine (SE) used to recover the heat content of the exhaust gas from an internal combustion engine. The attention has been focused on the heat transfer between the exhaust gas and the working gas inside the heater. Experimental tests have been performed on a two-cylinder gamma-type Stirling engine coupled to a compression ignition engine using a thermally insulated pipe and a cap. A mechanical power of 0.275 kW at 900 rpm SE rotational speed was obtained with a SE efficiency of 11.7%. To investigate how the exhaust gas-heater interaction affects SE efficiency, a 3D model was developed by the authors. The cap-heater system was studied as a shell-and-tubes heat exchanger. Experimental values of temperature and velocity have been set as boundary conditions for the cap, while for the heater, pressure and velocity have been predicted using a 1D adiabatic model adjusted for SE geometry. The results showed that temperature distribution is not uniform in both cylinders, involving that the working pistons do not work in the same way. Therefore, to improve SE efficiency, a proper configuration of SE-CI engine coupling should be designed.

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