Pub Date : 2024-05-01DOI: 10.1134/s0040601524050033
V. Blinov, I. Zubkov, G. Deryabin
{"title":"Estimating the Influence of Compressor Blade Erosion Wear on the Compressor’s Integral and Local Characteristics","authors":"V. Blinov, I. Zubkov, G. Deryabin","doi":"10.1134/s0040601524050033","DOIUrl":"https://doi.org/10.1134/s0040601524050033","url":null,"abstract":"","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141144550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s004060152405001x
H. Abdi, N. O. Jafari, V. Melikhov, O. Melikhov
{"title":"Validation of the STEG Code against Experimental Data on Hydrodynamics of a Horizontal Steam Generator","authors":"H. Abdi, N. O. Jafari, V. Melikhov, O. Melikhov","doi":"10.1134/s004060152405001x","DOIUrl":"https://doi.org/10.1134/s004060152405001x","url":null,"abstract":"","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141131563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s0040601524050045
K. T. Chan, A. Dmitriev, I. A. Mikhailova, P. Makarov
{"title":"Study of Heating and Evaporation of Rotating Graphene Nanofluid under the Influence of Solar Radiation","authors":"K. T. Chan, A. Dmitriev, I. A. Mikhailova, P. Makarov","doi":"10.1134/s0040601524050045","DOIUrl":"https://doi.org/10.1134/s0040601524050045","url":null,"abstract":"","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141139447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s0040601524050057
S. Dmitriev, T. D. Demkina, A. Dobrov, D. Doronkov, D. S. Doronkova, A. Pronin, A. Ryazanov
{"title":"Coolant Hydrodynamics at the Inlet to the FA of the RITM-Type Reactor of a Small Nuclear Power Plant","authors":"S. Dmitriev, T. D. Demkina, A. Dobrov, D. Doronkov, D. S. Doronkova, A. Pronin, A. Ryazanov","doi":"10.1134/s0040601524050057","DOIUrl":"https://doi.org/10.1134/s0040601524050057","url":null,"abstract":"","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141144441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s0040601524050021
A. Alkhasov, D. A. Alkhasova
{"title":"Comprehensive Development of Brines of the Berikei Geothermal Field","authors":"A. Alkhasov, D. A. Alkhasova","doi":"10.1134/s0040601524050021","DOIUrl":"https://doi.org/10.1134/s0040601524050021","url":null,"abstract":"","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141145052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s0040601524050070
E. N. Kulakov, Yu. G. Sukhorukov, D. G. Soenko, I. E. Vikharev, S. Esin, F. A. Svyatkin, K. A. Grigoriev, A. V. Popov
{"title":"Optimization of Weight and Size Characteristics and Unification of Heaters of the Regeneration System of NPP Turbine Units","authors":"E. N. Kulakov, Yu. G. Sukhorukov, D. G. Soenko, I. E. Vikharev, S. Esin, F. A. Svyatkin, K. A. Grigoriev, A. V. Popov","doi":"10.1134/s0040601524050070","DOIUrl":"https://doi.org/10.1134/s0040601524050070","url":null,"abstract":"","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141137445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s0040601524050069
N. V. Ivanova, M. M. Bedretdinov, O. E. Stepanov, A. G. Karetnikov, D. N. Moisin, C. Schuster
{"title":"Posttest Calculations of Thermal-Hydraulic Conditions for Test Benches Simulating a Loss of Spent Fuel Pool Cooling Accident at BWR and VVER-1000/1200 Reactors","authors":"N. V. Ivanova, M. M. Bedretdinov, O. E. Stepanov, A. G. Karetnikov, D. N. Moisin, C. Schuster","doi":"10.1134/s0040601524050069","DOIUrl":"https://doi.org/10.1134/s0040601524050069","url":null,"abstract":"","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141130209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.1134/s0040601524050094
V. Tishchenko, A. Tishchenko, V. Gribin, V. Popov, I. Y. Gavrilov, K. A. Berdyugin, D. G. Sokolov
{"title":"Experience with Application of Laser Diagnostics Systems in Experimental Studies of Wet Steam Flows in the Flow Path of Turbomachines: Basic Results of Studies and System Development Trends","authors":"V. Tishchenko, A. Tishchenko, V. Gribin, V. Popov, I. Y. Gavrilov, K. A. Berdyugin, D. G. Sokolov","doi":"10.1134/s0040601524050094","DOIUrl":"https://doi.org/10.1134/s0040601524050094","url":null,"abstract":"","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141134014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-09DOI: 10.1134/s0040601524030030
M. V. Lototsky, M. W. Davids, V. N. Fokin, E. E. Fokina, B. P. Tarasov
Abstract
The development of compact, safe, and efficient methods for storing hydrogen is one of the key problems of hydrogen energy. Currently used technologies for storing hydrogen in the form of compressed gas or cryogenic liquid require significant capital investments and maintenance costs for compressor and cryogenic equipment, are characterized by high energy costs, and their implementation requires special safety measures as well as the use of hydrogen-neutral structural materials. A promising way to solve these problems for medium-scale storage systems is the use of metal hydrides, which provide the simplest, most compact, and safe hydrogen storage compared to traditional methods. However, the high cost of hydride-forming materials hinders the implementation of this approach. The use of alloys based on the TiFe intermetallic compound would reduce the costs of metal hydride hydrogen storage by more than five times. This circumstance is the reason for the growing interest of specialists in the field of hydrogen energy technologies in hydrogen-storage materials based on titanium-iron alloys. Although hydrogen systems with the TiFe intermetallic compound and its derivatives have been studied for more than 50 years, the search for ways to increase the resistance of their hydrogen sorption characteristics to poisoning by oxygen-containing impurities in the gas and solid phases has become particularly relevant in recent years. This article provides an overview of research and development aimed at obtaining, studying the properties, and using titanium-iron alloys with improved hydrogen sorption characteristics. An analysis of the data presented in the scientific literature is presented, and approaches to the development of highly efficient hydride-forming materials based on the TiFe intermetallic compound and hydrogen-storage systems based on them are formulated.
{"title":"Hydrogen-Accumulating Materials Based on Titanium and Iron Alloys (Review)","authors":"M. V. Lototsky, M. W. Davids, V. N. Fokin, E. E. Fokina, B. P. Tarasov","doi":"10.1134/s0040601524030030","DOIUrl":"https://doi.org/10.1134/s0040601524030030","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The development of compact, safe, and efficient methods for storing hydrogen is one of the key problems of hydrogen energy. Currently used technologies for storing hydrogen in the form of compressed gas or cryogenic liquid require significant capital investments and maintenance costs for compressor and cryogenic equipment, are characterized by high energy costs, and their implementation requires special safety measures as well as the use of hydrogen-neutral structural materials. A promising way to solve these problems for medium-scale storage systems is the use of metal hydrides, which provide the simplest, most compact, and safe hydrogen storage compared to traditional methods. However, the high cost of hydride-forming materials hinders the implementation of this approach. The use of alloys based on the TiFe intermetallic compound would reduce the costs of metal hydride hydrogen storage by more than five times. This circumstance is the reason for the growing interest of specialists in the field of hydrogen energy technologies in hydrogen-storage materials based on titanium-iron alloys. Although hydrogen systems with the TiFe intermetallic compound and its derivatives have been studied for more than 50 years, the search for ways to increase the resistance of their hydrogen sorption characteristics to poisoning by oxygen-containing impurities in the gas and solid phases has become particularly relevant in recent years. This article provides an overview of research and development aimed at obtaining, studying the properties, and using titanium-iron alloys with improved hydrogen sorption characteristics. An analysis of the data presented in the scientific literature is presented, and approaches to the development of highly efficient hydride-forming materials based on the TiFe intermetallic compound and hydrogen-storage systems based on them are formulated.</p>","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-09DOI: 10.1134/s004060152403008x
S. A. Shevyrev, S. S. Azikhanov, A. R. Bogomolov, A. B. Kuznetsov
Abstract
The industrial production of carbon sorbents from coal is a promising and relevant direction. The starting material is mainly brown coal, which is characterized by a high yield of volatile substances and low ash content. Of particular interest to the coal industry is the development of technology for producing sorbents from low-grade coals with a large specific surface area, high adsorption activity, and low cost. Existing methods for producing sorbents from coals that meet such criteria should be based on various thermophysical principles of influence on the source material. The work investigated one-stage and two-stage methods for producing sorbents from coal grades D and DG mined in Kuzbass. The one-stage technique consisted of steam gasification of the starting material in a fluidized bed. The two-stage technique was based on preliminary decarbonization in a muffle furnace followed by activation with superheated water vapor in a fluidized bed. As a result of experimental studies, samples of carbon sorbents were obtained from coals of low metamorphism. Analysis of textural characteristics showed that the specific surface area of the sorbents is up to 250 m2/g and adsorption activity up to 100 mg/g. It has been established that the composition of the mineral mass of the original coals significantly affects the adsorption activity of the resulting sorbents. Estimates show that the higher the ash basicity index, the higher the adsorption activity of the resulting carbon sorbent. With a one-stage method for producing sorbents from coal grades D and DG in a fluidized bed, a fairly high specific surface area is achieved with a relatively low adsorption activity in comparison with a two-stage method.
摘要 从煤炭中工业化生产碳吸附剂是一个前景广阔的相关方向。起始原料主要是褐煤，其特点是挥发性物质产量高、灰分低。煤炭工业特别感兴趣的是从低品位煤炭中生产比表面积大、吸附活性高、成本低的吸附剂的技术开发。从煤炭中生产符合上述标准的吸附剂的现有方法应基于对源材料产生影响的各种热物理原理。这项工作研究了从库兹巴斯开采的 D 级和 DG 级煤炭中生产吸附剂的一步法和两步法。一段式技术包括在流化床中对原料进行蒸汽气化。两阶段技术的基础是在马弗炉中进行初步脱碳，然后在流化床中用过热水蒸气进行活化。通过实验研究，从变质程度较低的煤炭中获得了碳吸附剂样品。纹理特征分析表明，吸附剂的比表面积高达 250 平方米/克，吸附活性高达 100 毫克/克。已经证实，原始煤炭的矿物成分对所产生的吸附剂的吸附活性有很大影响。估计结果表明，灰分碱性指数越高，所得碳吸附剂的吸附活性就越高。在流化床中用一级法生产 D 级和 DG 级煤炭吸附剂，可以获得相当高的比表面积，但与二级法相比，吸附活性相对较低。
{"title":"Prospects for Obtaining Carbon Sorbents from D and DG Grade Coals","authors":"S. A. Shevyrev, S. S. Azikhanov, A. R. Bogomolov, A. B. Kuznetsov","doi":"10.1134/s004060152403008x","DOIUrl":"https://doi.org/10.1134/s004060152403008x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The industrial production of carbon sorbents from coal is a promising and relevant direction. The starting material is mainly brown coal, which is characterized by a high yield of volatile substances and low ash content. Of particular interest to the coal industry is the development of technology for producing sorbents from low-grade coals with a large specific surface area, high adsorption activity, and low cost. Existing methods for producing sorbents from coals that meet such criteria should be based on various thermophysical principles of influence on the source material. The work investigated one-stage and two-stage methods for producing sorbents from coal grades D and DG mined in Kuzbass. The one-stage technique consisted of steam gasification of the starting material in a fluidized bed. The two-stage technique was based on preliminary decarbonization in a muffle furnace followed by activation with superheated water vapor in a fluidized bed. As a result of experimental studies, samples of carbon sorbents were obtained from coals of low metamorphism. Analysis of textural characteristics showed that the specific surface area of the sorbents is up to 250 m<sup>2</sup>/g and adsorption activity up to 100 mg/g. It has been established that the composition of the mineral mass of the original coals significantly affects the adsorption activity of the resulting sorbents. Estimates show that the higher the ash basicity index, the higher the adsorption activity of the resulting carbon sorbent. With a one-stage method for producing sorbents from coal grades D and DG in a fluidized bed, a fairly high specific surface area is achieved with a relatively low adsorption activity in comparison with a two-stage method.</p>","PeriodicalId":799,"journal":{"name":"Thermal Engineering","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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