{"title":"热化学蓄热过程中释放动力的传热和传质限制:三种主要运行模式","authors":"Alexandra Grekova, Mikhail Tokarev","doi":"10.1016/j.ces.2024.120452","DOIUrl":null,"url":null,"abstract":"<div><p>Thermochemical heat storage is promising energy saving technology. In order to make the technology competitive it is necessary to identify all possible “bottle necks” of the heat transformation process. Three key modes of the heat release are considered: maximum power, maximum heating, prolonged heat release. Possible limiting stages of heat release are analyzed. Theoretical dependences describing released power and heat transfer fluid temperature are derived and verified experimentally. The global heat transfer coefficient UA and maximum power for small heat exchanger (140 cm<sup>3</sup>) were found by different methods. Results for UA (39 ± 4 W/K, 34 ± 4 W/K and 37 ± 4 W/K) and maximum power (320 ± 20 W and 350 ± 20 W) obtained theoretically and experimentally are in good agreement. Recommendations on realization of all three modes are given. The novelty of this paper is the attempt to perform a quantitative comprehensive analysis of the constraints that different system resistances impose on the released power.</p></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Heat and mass transfer limitations of released power for thermochemical heat storage process: Three main operation modes\",\"authors\":\"Alexandra Grekova, Mikhail Tokarev\",\"doi\":\"10.1016/j.ces.2024.120452\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Thermochemical heat storage is promising energy saving technology. In order to make the technology competitive it is necessary to identify all possible “bottle necks” of the heat transformation process. Three key modes of the heat release are considered: maximum power, maximum heating, prolonged heat release. Possible limiting stages of heat release are analyzed. Theoretical dependences describing released power and heat transfer fluid temperature are derived and verified experimentally. The global heat transfer coefficient UA and maximum power for small heat exchanger (140 cm<sup>3</sup>) were found by different methods. Results for UA (39 ± 4 W/K, 34 ± 4 W/K and 37 ± 4 W/K) and maximum power (320 ± 20 W and 350 ± 20 W) obtained theoretically and experimentally are in good agreement. Recommendations on realization of all three modes are given. The novelty of this paper is the attempt to perform a quantitative comprehensive analysis of the constraints that different system resistances impose on the released power.</p></div>\",\"PeriodicalId\":271,\"journal\":{\"name\":\"Chemical Engineering Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2024-07-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Engineering Science\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0009250924007528\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Science","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0009250924007528","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Heat and mass transfer limitations of released power for thermochemical heat storage process: Three main operation modes
Thermochemical heat storage is promising energy saving technology. In order to make the technology competitive it is necessary to identify all possible “bottle necks” of the heat transformation process. Three key modes of the heat release are considered: maximum power, maximum heating, prolonged heat release. Possible limiting stages of heat release are analyzed. Theoretical dependences describing released power and heat transfer fluid temperature are derived and verified experimentally. The global heat transfer coefficient UA and maximum power for small heat exchanger (140 cm3) were found by different methods. Results for UA (39 ± 4 W/K, 34 ± 4 W/K and 37 ± 4 W/K) and maximum power (320 ± 20 W and 350 ± 20 W) obtained theoretically and experimentally are in good agreement. Recommendations on realization of all three modes are given. The novelty of this paper is the attempt to perform a quantitative comprehensive analysis of the constraints that different system resistances impose on the released power.
期刊介绍:
Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline.
Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.