Pub Date : 2022-12-20DOI: 10.23939/jtbp2022.02.007
N. Kopiika, Y. Blikharskyy
Wide spread of RC structures in construction projects indicates the necessity of their service life prolongation. Perspective possibility to increase strength of RC structures is use of external composite tapes. The article presents theoretical research on the effectiveness of strengthening of RC bended elements with the use of composite tapes. Work also includes comparative analysis on the basis of calculations, according to normative regulations. With the use of developed algorithm parameters of stress-strain state and deformability of RC beams, strengthened with composite tapes were obtained. Study identified, that the most critical parameter was the steel bars` strain and yield point. Interesting finding of the study is the no-linearity of the strength growth of the studied elements with the increase of additional reinforcement amount. Consistent literature review was conducted, which identified the necessity to take into account different external factors and failure mode.
{"title":"EFFECTIVENESS OF STRENGTHENING OF REINFORCED CONCRETE BEAMS WITH THE USE OF COMPOSITE MATERIALS","authors":"N. Kopiika, Y. Blikharskyy","doi":"10.23939/jtbp2022.02.007","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.007","url":null,"abstract":"Wide spread of RC structures in construction projects indicates the necessity of their service life prolongation. Perspective possibility to increase strength of RC structures is use of external composite tapes. The article presents theoretical research on the effectiveness of strengthening of RC bended elements with the use of composite tapes. Work also includes comparative analysis on the basis of calculations, according to normative regulations. With the use of developed algorithm parameters of stress-strain state and deformability of RC beams, strengthened with composite tapes were obtained. Study identified, that the most critical parameter was the steel bars` strain and yield point. Interesting finding of the study is the no-linearity of the strength growth of the studied elements with the increase of additional reinforcement amount. Consistent literature review was conducted, which identified the necessity to take into account different external factors and failure mode.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134252152","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.017
Mykola Bosak, I. Matlai, Oleksandr Hvozdetskyi, Taras Sydor
The accuracy of water flow rate measurement with an ultrasonic flow meter (UFM) is affected by pipeline conditions. On water pipelines, there is often no the required length of direct section, required by the device passport or regulatory documents. Therefore, we conducted experiments using UFM to measure water flow rate in the zone of influence of non-direct sections of the water pipeline. The flow rate was measured in two planes of the pipeline with an offset of 90 o and the average value was taken. Thus, it was expected to take into account the average water velocity for the asymmetric velocity profile. The results of water flow rate measuring with UFM on short direct sections of the water pipeline, limited by pipeline bends sudden constriction of the pipeline, are presented. The greatest influence on the UFM measurement error is the 90 o pipeline bends.
{"title":"THE USE OF AN ULTRASONIC FLOW METER IN THE ZONE OF INFLUENCE OF INDIRECT SECTIONS OF THE WATER PIPELINE","authors":"Mykola Bosak, I. Matlai, Oleksandr Hvozdetskyi, Taras Sydor","doi":"10.23939/jtbp2022.02.017","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.017","url":null,"abstract":"The accuracy of water flow rate measurement with an ultrasonic flow meter (UFM) is affected by pipeline conditions. On water pipelines, there is often no the required length of direct section, required by the device passport or regulatory documents. Therefore, we conducted experiments using UFM to measure water flow rate in the zone of influence of non-direct sections of the water pipeline. The flow rate was measured in two planes of the pipeline with an offset of 90 o and the average value was taken. Thus, it was expected to take into account the average water velocity for the asymmetric velocity profile. The results of water flow rate measuring with UFM on short direct sections of the water pipeline, limited by pipeline bends sudden constriction of the pipeline, are presented. The greatest influence on the UFM measurement error is the 90 o pipeline bends.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114852465","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.049
Pavol Knut, P. Kapalo, Z. Vranayová
The main goal of the work was the measurement of photovoltaic panels on a family house in the village of Lucka in eastern Slovakia during 4 months. The panels were mounted on the south side of the building at a slope of 26 degrees. The measurement took place every day only during sunshine. Subsequently, the comparison of these actually measured values with the calculated values from the PVGIS software, which also serves to calculate photovoltaic panels. Photovoltaic panels were measured in the months of April, May, June, July in 2021. As was mentioned, the measurement took place only during sunshine, i.e. when the sun's rays hit the photovoltaic panels. From these measurement results, we will find out how much electricity we will actually produce in these months and how much the software will "produce" if we enter the same parameters for the location and type of photovoltaic panels as for a family house.
{"title":"COMPARISON OF MEASURED AND CALCULATED ELECTRICAL ENERGY CAPTURED BY PHOTOVOLTAIC PANELS","authors":"Pavol Knut, P. Kapalo, Z. Vranayová","doi":"10.23939/jtbp2022.02.049","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.049","url":null,"abstract":"The main goal of the work was the measurement of photovoltaic panels on a family house in the village of Lucka in eastern Slovakia during 4 months. The panels were mounted on the south side of the building at a slope of 26 degrees. The measurement took place every day only during sunshine. Subsequently, the comparison of these actually measured values with the calculated values from the PVGIS software, which also serves to calculate photovoltaic panels. Photovoltaic panels were measured in the months of April, May, June, July in 2021. As was mentioned, the measurement took place only during sunshine, i.e. when the sun's rays hit the photovoltaic panels. From these measurement results, we will find out how much electricity we will actually produce in these months and how much the software will \"produce\" if we enter the same parameters for the location and type of photovoltaic panels as for a family house.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128508342","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.098
S. Tolmachov, O. Belichenko, Dmytro Tolmachov, Y. Turba
Studies of moisture loss from hardening monolithic cement concrete have been carried out. It was found that there is no consensus on the critical value of moisture loss from hardening concrete, at which shrinkage and cracking are possible, and there is no common understanding of the possible critical width of the shrinkage crack opening. It is shown that when the concrete hardens in air-dry conditions, its indicators, including durability, decrease by a factor of 2 or more. The critical value of moisture loss from hardening concrete was experimentally determined, which is 2 kg/m2. In this case, the deterioration of concrete properties as a result of rehydration of cement does not exceed 5 % and does not affect its durability. The possibility of restoring the properties of concretes, which were lost as a result of cracking during plastic shrinkage and contraction, has been experimentally proved if, after cracking, the concretes are placed for further hardening in a humid environment.
{"title":"CURRENT PROBLEMS OF HARDENING MONOLITHIC ROAD AND AERODROME CEMENT CONCRETE CURING","authors":"S. Tolmachov, O. Belichenko, Dmytro Tolmachov, Y. Turba","doi":"10.23939/jtbp2022.02.098","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.098","url":null,"abstract":"Studies of moisture loss from hardening monolithic cement concrete have been carried out. It was found that there is no consensus on the critical value of moisture loss from hardening concrete, at which shrinkage and cracking are possible, and there is no common understanding of the possible critical width of the shrinkage crack opening. It is shown that when the concrete hardens in air-dry conditions, its indicators, including durability, decrease by a factor of 2 or more. The critical value of moisture loss from hardening concrete was experimentally determined, which is 2 kg/m2. In this case, the deterioration of concrete properties as a result of rehydration of cement does not exceed 5 % and does not affect its durability. The possibility of restoring the properties of concretes, which were lost as a result of cracking during plastic shrinkage and contraction, has been experimentally proved if, after cracking, the concretes are placed for further hardening in a humid environment.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114937132","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.036
R. Rybak
Reinforced concrete pipes are exposed to environmental influences during the entire period of their operation. As a result, defects and damage appear and reduce durability and bearing capacity. In this regard, there is a need to repair and strengthen them. In order to assess the effectiveness of strengthening reinforced concrete pipes, it is necessary to get data about deformations that appeared as a result of the loads on the reinforced concrete pipe. The method for conducting experimental studies of the deformed state of reinforced concrete pipes has been developed, and the main devices and means necessary for conducting experimental research in laboratory conditions have been selected. The obtained data of deformations appearance can be used to compare the effectiveness of various methods of strengthening reinforced concrete pipes and their improvement as well as to monitor technical condition and to predict the formation of defects.
{"title":"EXPERIMENTAL TESTING METHODOLOGY OF STRESS-STRAIN STATE OF THE REINFORCED CONCRETE PIPE WITH STRENGTHENING","authors":"R. Rybak","doi":"10.23939/jtbp2022.02.036","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.036","url":null,"abstract":"Reinforced concrete pipes are exposed to environmental influences during the entire period of their operation. As a result, defects and damage appear and reduce durability and bearing capacity. In this regard, there is a need to repair and strengthen them. In order to assess the effectiveness of strengthening reinforced concrete pipes, it is necessary to get data about deformations that appeared as a result of the loads on the reinforced concrete pipe. The method for conducting experimental studies of the deformed state of reinforced concrete pipes has been developed, and the main devices and means necessary for conducting experimental research in laboratory conditions have been selected. The obtained data of deformations appearance can be used to compare the effectiveness of various methods of strengthening reinforced concrete pipes and their improvement as well as to monitor technical condition and to predict the formation of defects.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123111582","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.068
I. Kirakevych, Таras Kropyvnytskyi
The article presents the peculiarities of obtaining superplasticized cementitious systems "Portland cement – fly ash - superplasticizer" to find a rational provision of the given construction and technical properties of concrete. It was studied the physico-chemical peculiarities of the hydration processes of superplasticized cementitious systems. There were solved problems of directional formation of the microstructure of cement stone. Research results show that the use of superplasticized cementitious systems allows influencing the technological properties and kinetics of structure formation and creating a dense and strong microstructure of the concrete cementitious matrix. The use of superplasticized cementitious systems solves the problems of obtaining rapid-hardening self-compacting concrete, which creates the possibility of using vibration-free technology of monolithic concreting of structures.
{"title":"BEHAVIOR OF SUPERPLASTICIZED CEMENTITIOUS SYSTEMS FOR SELF-COMPACTING CONCRETE","authors":"I. Kirakevych, Таras Kropyvnytskyi","doi":"10.23939/jtbp2022.02.068","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.068","url":null,"abstract":"The article presents the peculiarities of obtaining superplasticized cementitious systems \"Portland cement – fly ash - superplasticizer\" to find a rational provision of the given construction and technical properties of concrete. It was studied the physico-chemical peculiarities of the hydration processes of superplasticized cementitious systems. There were solved problems of directional formation of the microstructure of cement stone. Research results show that the use of superplasticized cementitious systems allows influencing the technological properties and kinetics of structure formation and creating a dense and strong microstructure of the concrete cementitious matrix. The use of superplasticized cementitious systems solves the problems of obtaining rapid-hardening self-compacting concrete, which creates the possibility of using vibration-free technology of monolithic concreting of structures.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131852965","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.058
M. Hohol, Dmytro Sydorak
In this article on increasing the efficiency of steel combined structures, the tasks of rational design, regulation and control of structural parameters of elements, the use of steels with increased mechanical properties are considered. It is shown that for a six-span stiffening girder of a combined truss with elastic supports, which operates under a distributed load, the moment is 72 times smaller than the moment of a single-span beam. It is suggested to use high-strength steel for truss braces. Rationality criteria are proposed. On the basis of rationality criteria, new steel combined trusses were developed and their models were designed for stress tests. The results of experimental studies of models of combined trusses are presented. The results of experimental studies conducted on models of steel combined trusses qualitatively and quantitatively confirmed the theoretical results obtained on the basis of the proposed theory.
{"title":"STRUCTURAL EFFICIENCY OF STEEL COMBINED TRUSSES","authors":"M. Hohol, Dmytro Sydorak","doi":"10.23939/jtbp2022.02.058","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.058","url":null,"abstract":"In this article on increasing the efficiency of steel combined structures, the tasks of rational design, regulation and control of structural parameters of elements, the use of steels with increased mechanical properties are considered. It is shown that for a six-span stiffening girder of a combined truss with elastic supports, which operates under a distributed load, the moment is 72 times smaller than the moment of a single-span beam. It is suggested to use high-strength steel for truss braces. Rationality criteria are proposed. On the basis of rationality criteria, new steel combined trusses were developed and their models were designed for stress tests. The results of experimental studies of models of combined trusses are presented. The results of experimental studies conducted on models of steel combined trusses qualitatively and quantitatively confirmed the theoretical results obtained on the basis of the proposed theory.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114929927","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.083
V. Zhelykh, Yurii Furdas, Oleh Khamets
Currently, the problem of energy-saving construction remains extremely relevant. The application of thermorenovation measures for existing public and residential buildings is one of the ways to solve the problem of rational use of fuel and energy resources. In this article, one of the thermorenovation measures is considered, in particular, the installation of additional external insulation to insulate external walls on the example of a general secondary education institution. The results of the research made it possible to evaluate the thermal stability of the fences as a result of insulation, so it was established that gas consumption and gross carbon dioxide emissions when using insulation with a thickness of 150 mm is reduced by almost 4.5 times. The proposed thermoregulation measures bring buildings into compliance with state regulations and increase indoor comfort by equalizing the average temperature and eliminating cold bridges.
{"title":"EVALUATION OF THERMAL RESISTANCE OF EXTERNAL PROTECTION DURING THERMAL RENOVATION OF THE BUILDING","authors":"V. Zhelykh, Yurii Furdas, Oleh Khamets","doi":"10.23939/jtbp2022.02.083","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.083","url":null,"abstract":"Currently, the problem of energy-saving construction remains extremely relevant. The application of thermorenovation measures for existing public and residential buildings is one of the ways to solve the problem of rational use of fuel and energy resources. In this article, one of the thermorenovation measures is considered, in particular, the installation of additional external insulation to insulate external walls on the example of a general secondary education institution. The results of the research made it possible to evaluate the thermal stability of the fences as a result of insulation, so it was established that gas consumption and gross carbon dioxide emissions when using insulation with a thickness of 150 mm is reduced by almost 4.5 times. The proposed thermoregulation measures bring buildings into compliance with state regulations and increase indoor comfort by equalizing the average temperature and eliminating cold bridges.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123067766","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.090
Yurii Novytskyi, V. Yatsenko, N. Topylko
The European Green Deal is the latest climate and environmental protection program launched by the EU. This is a strategy to transform the EU into a resource-efficient economy, in which in 2050 there will be zero greenhouse gas emissions and economic growth will be decoupled from the use of natural resources. After approving the National Economic Strategy for the period until 2030, Ukraine joins and focuses on the European Green Deal and aims to achieve climate neutrality in 2060 (Natsionalna ekonomichna stratehiia, 2021). Such ambitious goals can become a huge challenge for our country, in particular, in environmental projects of recycling in construction. Popularization of the principles of the circular economy and the introduction of the best European experience in the reuse of industrial waste is not only a requirement for the successful accession of Ukraine to the EU, but also a prerequisite for the effective implementation of infrastructure projects, especially the post-war reconstruction of the country.
{"title":"PREREQUISITES FOR THE IMPLEMENTATION OF THE EUROPEAN EXPERIENCE IN THE USE OF ASH-SLAG MATERIALS IN THE CONSTRUCTION OF HIGHWAYS: А REVIEW","authors":"Yurii Novytskyi, V. Yatsenko, N. Topylko","doi":"10.23939/jtbp2022.02.090","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.090","url":null,"abstract":"The European Green Deal is the latest climate and environmental protection program launched by the EU. This is a strategy to transform the EU into a resource-efficient economy, in which in 2050 there will be zero greenhouse gas emissions and economic growth will be decoupled from the use of natural resources. After approving the National Economic Strategy for the period until 2030, Ukraine joins and focuses on the European Green Deal and aims to achieve climate neutrality in 2060 (Natsionalna ekonomichna stratehiia, 2021). Such ambitious goals can become a huge challenge for our country, in particular, in environmental projects of recycling in construction. Popularization of the principles of the circular economy and the introduction of the best European experience in the reuse of industrial waste is not only a requirement for the successful accession of Ukraine to the EU, but also a prerequisite for the effective implementation of infrastructure projects, especially the post-war reconstruction of the country.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"57 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114097537","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 : 2022-12-20DOI: 10.23939/jtbp2022.02.044
V. Labay, H. Klymenko, M. Gensetskyi
The article is devoted to increasing the efficiency of the air conditioning systems of clean rooms, which maintain the microclimate parameters in a given range according to several indicators - the number and size per 1 m³ of dust particles, aerosols, microorganisms and pressure, humidity, and temperature. Clean rooms are used in microelectronics, instrumentation, medicine and medical industry, pharmacology, laboratories, optics production, food industry, biotechnology, aviation, and space industry. Recently, abroad and in Ukraine, with the aim of saving energy resources, fundamental research is being conducted in a number of technologies from the perspective of exergetic methodology. This contributes to an objective assessment of the degree of energy perfection of devices and processes related to energy conversion in modern technologies. For this purpose, the authors developed an exergetic method of analyzing the operation of the direct-flow central air conditioning system of clean rooms.
{"title":"STATUS AND PROSPECTS OF IMPROVING ENERGY EFFICIENCY CLEAN ROOMS AIR CONDITIONING SYSTEMS","authors":"V. Labay, H. Klymenko, M. Gensetskyi","doi":"10.23939/jtbp2022.02.044","DOIUrl":"https://doi.org/10.23939/jtbp2022.02.044","url":null,"abstract":"The article is devoted to increasing the efficiency of the air conditioning systems of clean rooms, which maintain the microclimate parameters in a given range according to several indicators - the number and size per 1 m³ of dust particles, aerosols, microorganisms and pressure, humidity, and temperature. Clean rooms are used in microelectronics, instrumentation, medicine and medical industry, pharmacology, laboratories, optics production, food industry, biotechnology, aviation, and space industry. Recently, abroad and in Ukraine, with the aim of saving energy resources, fundamental research is being conducted in a number of technologies from the perspective of exergetic methodology. This contributes to an objective assessment of the degree of energy perfection of devices and processes related to energy conversion in modern technologies. For this purpose, the authors developed an exergetic method of analyzing the operation of the direct-flow central air conditioning system of clean rooms.","PeriodicalId":369033,"journal":{"name":"Theory and Building Practice","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130135498","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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