Feasibility analysis of an exhaust gas waste heat driven jet-ejector cooling system for charge air cooling of turbocharged gasoline engines

被引：35
作者：
Zegenhagen, M. T. [1 ]
Ziegler, F. [1 ]
机构：
[1] Tech Univ Berlin, Inst Energietech, D-10587 Berlin, Germany
来源：
APPLIED ENERGY | 2015年 / 160卷
关键词：
Energy efficiency; Charge air cooling; Turbocharged gasoline engines; Exhaust gas heat exchange; Jet-ejector cooling; Refrigerant R134a; RECOVERY; DESIGN; R134A;
D O I：
10.1016/j.apenergy.2015.09.057
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The present paper analyzes the feasibility of an exhaust gas driven jet-ejector cooling system for charge air cooling of turbocharged gasoline engines in addition to the conventional charge air cooler to increase the engine efficiency. Thereto, steady-state experiments of a jet-ejector cooling system and an exhaust gas heat exchanger prototype working with the refrigerant R134a are used to analyze the operation and control of the compound system and determine feasible cooling capacities, charge air temperatures, thermal COPth and hydraulic COPh. Moreover, the cooling system is rated regarding its power densities and engine backpressure. The exhaust gas waste heat recovery, system power densities, and engine back-pressure are acceptable. However, the hydraulic COPh and the amount of reject heat need to be improved, necessitating for instance a multi-staging of the jet-ejection. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：221 / 230
页数：10
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