Imperial College London
Portrait Picture

DrJianSong

Faculty of Engineering, Department of Chemical Engineering

Honorary Research Fellow
 
 
 
//

Contact

 

jian.song

 
 
//

Location

 

B432ABCACE ExtensionSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@inproceedings{Song:2018:10.1115/GT2018-75914,
author = {Song, J and Ren, XD and Gu, CW},
doi = {10.1115/GT2018-75914},
title = {Investigation of engine waste heat recovery using supercritical CO<inf>2</inf> (S-CO<inf>2</inf>) cycle system},
url = {http://dx.doi.org/10.1115/GT2018-75914},
year = {2018}
}
Download

RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Primary energy consumption of diesel engines is increasingrapidly and strict emission standards are introduced by thegovernment. Interests in engine waste heat recovery have beenrenewed to alleviate the energy shortage and emission issues.Supercritical CO2 (S-CO2) cycle has emerged as a promisingmethod considering its compact structure and system safety levelin addition to the environmental friendly characteristics. Thispaper explores the potential of using S-CO2 cycle system forengine waste heat recovery. Both heat load from the lowtemperature jacket cooling water and the high temperatureengine exhaust gas are intended to be recovered. In the originalsystem, the jacket cooling water is used to preheat the S-CO2working fluid and the engine exhaust gas is utilized in thepreheater. As an optimized scheme, system with two preheatersis presented. The engine exhaust gas is further cooled in a hightemperature preheater after the jacket cooling water in the lowtemperature preheater. The available heat load from these twoheat sources can be entirely recovered. However, the increasingpreheating temperature suppresses the regeneration effect. Aregeneration branch is then added in the system. Part of the SCO2 working fluid from the compressor goes into a lowtemperature regenerator and then converges with the other partfrom the two preheats. A deeper utilization of the regenerationheat load is achieved and performance enhancement of the SCO2 cycle system is expected. The maximum net power outputof the system with regeneration branch reaches 82.8 kW, whichresults in an 8.5% increment on the engine power output.
AU  - Song,J
AU  - Ren,XD
AU  - Gu,CW
DO  - 10.1115/GT2018-75914
PY  - 2018///
TI  - Investigation of engine waste heat recovery using supercritical CO<inf>2</inf> (S-CO<inf>2</inf>) cycle system
UR  - http://dx.doi.org/10.1115/GT2018-75914
ER  -
Download