Zhang, C., Shu, G., Tian, H., Wei, H., Yu, G. and Liang, Y. (2014) Theoretical analysis of a combined thermoelectric generator (TEG) and dual-loop organic Rankine cycle (DORC) system using for engines' exhaust waste heat recovery. SAE Technical Papers, 2014, 01-0670. (doi: 10.4271/2014-01-0670)
Full text not currently available from Enlighten.
Abstract
This paper presents a model system TEG-DORC that employs thermoelectric generator (TEG) as a topping cycle integrated with a dual-loop organic Rankine bottoming cycle (DORC) to recover exhaust heat of internal combustion engine (ICE). The thermodynamic performance of TEG-DORC system is analyzed based on the first and second law of thermodynamics when system net output power Wnet, thermal efficiency ηth, exergy efficiency ηe and volumetric expansion ratio are chosen as objective functions. The model has many parameters that affect combined system performance such as TEG scale, evaporation pressure of high temperature ORC loop (HT loop) Pevp,HT, condensation temperature of HT loop Tcond,HT. It is suggested that HT loop has a vital influence on system performance. The results show that TEG-DORC system can significantly improve system performance, and system net output power gets maximum (30.69kW) when Tcond,HT is 370K and Pevp,HT is 4MPa, accordingly, the absolute effective thermal efficiency increases by 5.2%. The maximum thermal efficiency and exergy efficiency are 26.39% and 53.08% respectively. And applying TEG modules can't promote DORC system performance as expected.
| Item Type: | Articles |
|---|---|
| Additional Information: | SAE Technical Paper 2014-01-0670 |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Yu, Dr Guopeng |
| Authors: | Zhang, C., Shu, G., Tian, H., Wei, H., Yu, G., and Liang, Y. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | SAE Technical Papers |
| Publisher: | SAE International |
| ISSN: | 0148-7191 |
| ISSN (Online): | 0096-5170 |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric