Zhao Xie, Anni Hu, Hongming Fang, Shitong Liu, Lan Yi, Weirun Lan
{"title":"翅片条件对提升管传热特性的影响","authors":"Zhao Xie, Anni Hu, Hongming Fang, Shitong Liu, Lan Yi, Weirun Lan","doi":"10.3103/S1068364X24601252","DOIUrl":null,"url":null,"abstract":"<p>Approximate 36% of the total heat is produced by coke oven gas (COG) in the coke oven and has a great potential for recovery. In order to recover the surplus heat effectively, a water-jacketed coke oven heat exchanger is installed at the coke oven ascension pipe. However, this core unit suffers from uneven water vapor distribution on the jacket side, which leads to decreased heat transfer efficiency and localized high temperature bulging. In this study, Fluent was used to simulate a single jacketed heat exchanger to investigate the effect of fin position (water jacket side or COG side) and its number (4, 8, 12) on the heat transfer characteristics of the ascension pipe when the flow rate of cooling water on the water jacket side is 0.3 m/s at a coking time of 16 h. The results indicate that, considering the flow field, performance evaluation metrics, and practical engineering issues, it is more advantageous to install the fins on the water jacket side. Furthermore, as the number of fins on the water jacket side increases, the outlet temperature on the COG side decreases, leading to enhanced heat transfer efficiency. The heat transfer effect was optimal when the number of fins of jacketed ascension pipe heat exchanger was augmented to a total of 12.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 1","pages":"52 - 66"},"PeriodicalIF":0.4000,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Fin Condition on Heat Transfer Characteristics of Ascension Pipes\",\"authors\":\"Zhao Xie, Anni Hu, Hongming Fang, Shitong Liu, Lan Yi, Weirun Lan\",\"doi\":\"10.3103/S1068364X24601252\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Approximate 36% of the total heat is produced by coke oven gas (COG) in the coke oven and has a great potential for recovery. In order to recover the surplus heat effectively, a water-jacketed coke oven heat exchanger is installed at the coke oven ascension pipe. However, this core unit suffers from uneven water vapor distribution on the jacket side, which leads to decreased heat transfer efficiency and localized high temperature bulging. In this study, Fluent was used to simulate a single jacketed heat exchanger to investigate the effect of fin position (water jacket side or COG side) and its number (4, 8, 12) on the heat transfer characteristics of the ascension pipe when the flow rate of cooling water on the water jacket side is 0.3 m/s at a coking time of 16 h. The results indicate that, considering the flow field, performance evaluation metrics, and practical engineering issues, it is more advantageous to install the fins on the water jacket side. Furthermore, as the number of fins on the water jacket side increases, the outlet temperature on the COG side decreases, leading to enhanced heat transfer efficiency. The heat transfer effect was optimal when the number of fins of jacketed ascension pipe heat exchanger was augmented to a total of 12.</p>\",\"PeriodicalId\":519,\"journal\":{\"name\":\"Coke and Chemistry\",\"volume\":\"68 1\",\"pages\":\"52 - 66\"},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2025-05-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Coke and Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1068364X24601252\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Coke and Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1068364X24601252","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Influence of Fin Condition on Heat Transfer Characteristics of Ascension Pipes
Approximate 36% of the total heat is produced by coke oven gas (COG) in the coke oven and has a great potential for recovery. In order to recover the surplus heat effectively, a water-jacketed coke oven heat exchanger is installed at the coke oven ascension pipe. However, this core unit suffers from uneven water vapor distribution on the jacket side, which leads to decreased heat transfer efficiency and localized high temperature bulging. In this study, Fluent was used to simulate a single jacketed heat exchanger to investigate the effect of fin position (water jacket side or COG side) and its number (4, 8, 12) on the heat transfer characteristics of the ascension pipe when the flow rate of cooling water on the water jacket side is 0.3 m/s at a coking time of 16 h. The results indicate that, considering the flow field, performance evaluation metrics, and practical engineering issues, it is more advantageous to install the fins on the water jacket side. Furthermore, as the number of fins on the water jacket side increases, the outlet temperature on the COG side decreases, leading to enhanced heat transfer efficiency. The heat transfer effect was optimal when the number of fins of jacketed ascension pipe heat exchanger was augmented to a total of 12.
期刊介绍:
The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.