{"title":"Exploring the potential of urea reforming in internal combustion engines","authors":"","doi":"10.1016/j.fuel.2024.133420","DOIUrl":null,"url":null,"abstract":"<div><div>This study numerically investigates the feasibility of employing urea reforming in internal combustion engines. A system, comprised of a urea reformer (converting a urea-water solution to ammonia, followed by ammonia conversion to hydrogen), a spark-ignition internal combustion engine, and an auxiliary burner, was modeled using 0D and 1D approaches. The analysis revealed that ammonia can only be partially converted to hydrogen due to the high energy consumption associated with the process. The research explored the system’s performance under various degrees of ammonia-to-hydrogen conversion, demonstrating that the indicated efficiency can reach up to 46% compare to 42% in case of same engine fed by natural gas. Additionally, an analysis of the reformer design was conducted.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":null,"pages":null},"PeriodicalIF":6.7000,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fuel","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0016236124025699","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
This study numerically investigates the feasibility of employing urea reforming in internal combustion engines. A system, comprised of a urea reformer (converting a urea-water solution to ammonia, followed by ammonia conversion to hydrogen), a spark-ignition internal combustion engine, and an auxiliary burner, was modeled using 0D and 1D approaches. The analysis revealed that ammonia can only be partially converted to hydrogen due to the high energy consumption associated with the process. The research explored the system’s performance under various degrees of ammonia-to-hydrogen conversion, demonstrating that the indicated efficiency can reach up to 46% compare to 42% in case of same engine fed by natural gas. Additionally, an analysis of the reformer design was conducted.
期刊介绍:
The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.