Thermoelectric Generation Using Diesel Engine Exhaust Waste Heat

2014 ◽  
Author(s):  
Kelly Austin ◽  
Xin (James) She ◽  
John Wagner
Keyword(s):  
Power Generation ◽  
Diesel Engine ◽  
Heat Recovery ◽  
Waste Heat ◽  
Experimental Testing ◽  
Exhaust System ◽  
Thermoelectric Generation ◽  
Module Design ◽  
Exhaust Heat ◽  
In Series

In the transportation industry, the need to improve powertrain efficiency and provide additional power to the many amenities has encouraged research on engine waste heat recovery. Approximately one-third of the gasoline or diesel fuel energy passes through the engine’s exhaust system as heat. With ongoing developments in thermoelectric materials and module design, thermoelectric power generation has a potential use in engine heat recovery. In this study, the capability of generating usable power by thermoelectric generation from the exhaust heat of a three-cylinder, 697 cubic centimeter diesel engine was investigated. From experimental testing, the maximum power output and maximum current for a single module and four modules connected in series was 0.49W with 0.437A, and 2.81W with 0.60A, respectively. To harvest larger power magnitude from the waste heat, the modules will be configured in a co-axial manner along the pipe. Other possible applications include stationary power generation systems in which added weight does not effect overall performance.

Simulation of Organic Rankine Cycle Power Generation with Exhaust Heat Recovery from a 15 liter Diesel Engine

2015 ◽  
Vol 8 (2) ◽  
pp. 227-238 ◽  
Author(s):  
Aimon Allouache ◽  
Smith Leggett ◽  
Matthew J. Hall ◽  
Ming Tu ◽  
Chad Baker ◽  
...  
Keyword(s):  
Power Generation ◽  
Diesel Engine ◽  
Heat Recovery ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Exhaust Heat ◽  
Exhaust Heat Recovery

Optimum waste heat recovery from diesel engines: Thermo-economic assessment of nanofluid-based systems using a robust evolutionary approach

2017 ◽  
Vol 233 (1) ◽  
pp. 65-82
Author(s):  
Moslem Yousefi ◽  
Danial Hooshyar ◽  
Joong H Kim ◽  
Marc A Rosen ◽  
Heuiseok Lim
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Diesel Engine ◽  
Heat Recovery ◽  
Volume Fraction ◽  
Waste Heat ◽  
Exhaust Heat ◽  
Recovery System ◽  
Heat Recovery System ◽  
Exhaust Heat Recovery

Nearly 30% of the input energy to a diesel engine is wasted through the exhaust gas; thus, considerable attention has been directed toward developing efficient heat recovery systems for these engines. Given the demonstrated ability of nanofluids to boost the heat transfer rate of heat exchangers, these heat transfer fluids merit consideration for use in diesel exhaust heat recovery systems. In this study, the effects of employing nanofluids on the optimum design of these systems are investigated. An existing heat diesel engine exhaust heat recovery system is modeled to work with Al2O3/water and a modified imperialist competitive algorithm is employed for the optimization. Seven variables consisting of five heat exchanger geometric characteristics together with nanoparticle volume fraction and coolant mass flow rate are considered as design variables. The heat exchanger cost and charging rate of the storage tank are optimization objectives, while the greenhouse gas savings of the heat recovery system are assessed for measuring the environmental impact of the energy recovery. The results indicate that the proposed approach can overcome the challenge of finding the near-optimal design of this complex system and using nanofluids enhances the performance of the heat recovery heat exchanger.

Research of Two Stage Single Screw Expander Organic Rankine Cycle System Scheme Based on the Waste Heat Recovery of Diesel Engine’s Exhaust Gas

2011 ◽  
Vol 201-203 ◽  
pp. 600-605 ◽  
Author(s):  
Hong Guang Zhang ◽  
Hong Liang ◽  
Xing Liu ◽  
Bin Liu ◽  
Yan Chen ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Exhaust Gas ◽  
Two Stage ◽  
Combustion Heat ◽  
Single Screw ◽  
Exhaust Heat

According to the analysis of heat balance, about 1/3 of the fuel combustion heat is taken away into the ambience by exhaust gas of diesel engine. In this article, to improve the using level of the fuel’s combustion heat, a two stage single screw expander organic Rankine cycle (ORC) system has been used to recover the waste heat from exhaust gas of a certain turbine diesel engine. In this article, physical model of the recovery system was built at first, then the T-S curve was drawn, at last, REFPROP was used to calculate thermodynamics parameter in different state point of this system, and analyze the whole system’s thermodynamics character. By analyzing, the evaporation temperature of this system should be optimized to get the relatively evaporation press; by calculating, it could be seen that the middle heater in this system should be taken away to improve the economy of this scheme. This scheme should supply a direction for the exhaust heat recovery of diesel engine.

On the suitable superstructure thermoeconomic optimization of a waste heat recovery system for a Brazilian diesel engine power plant

2021 ◽  
Vol 234 ◽  
pp. 113947
Author(s):  
Alexandre Persuhn Morawski ◽  
Leonardo Rodrigues de Araújo ◽  
Manuel Salazar Schiaffino ◽  
Renan Cristofori de Oliveira ◽  
André Chun ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Power Plant ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Heat Recovery System ◽  
Engine Power

Fundamental Study of Waste Heat Recovery in the High Boosted 6-cylinder Heavy Duty Diesel Engine

2015 ◽  
Vol 8 (2) ◽  
pp. 209-226 ◽  
Author(s):  
Takuya Yamaguchi ◽  
Yuzo Aoyagi ◽  
Noboru Uchida ◽  
Akira Fukunaga ◽  
Masayuki Kobayashi ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Heavy Duty ◽  
Fundamental Study ◽  
Heavy Duty Diesel Engine ◽  
Heavy Duty Diesel

scholarly journals Preliminary dynamic tests of a CO 2 transcritical power cycle for waste heat recovery from diesel engine

2017 ◽  
Vol 142 ◽  
pp. 1238-1243 ◽  
Author(s):  
Xiaoya Li ◽  
Gequn Shu ◽  
Hua Tian ◽  
Lingfeng Shi ◽  
Daiqiang Li ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Dynamic Tests ◽  
Power Cycle
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