Pub Date : 2018-08-27DOI: 10.18799/24056537/2018/3/197
A. Abrahamyan, A. Mkrtchyan, V. Nalbandyan, H. Hovhannisyan, R. Chilingaryan, A. S. Hakobyan, P. H. Mossoyan
Абстрактные. В статье описаны полученные экспериментальные результаты для планарного акустоплазменного магнетрона. Небольшой радиус анодной петли позволяет фокусировать и ускорять ионный компонент распыленного материала. В качестве буферного газа использовали аргон. Сравниваются характеристики магнетрона в случае постоянного тока и в акустоплазменном режиме (AP) (с модулированным током, содержащим постоянные и переменные компоненты). Скорость распыления в режиме AP увеличивается. Для медного катода давление газа составляло <1 Па и плотность тока порядка 100 мА / см 2с увеличением расстояния от анода до осажденного субстрата от 2 до 4 см в случае подачи постоянного тока скорость осаждения снижается в 3,3 раза (от 17 до 5 нм / с), в акустоплазменном режиме - в 2 раза (от 13 до 6,4 нм / с). Для расстояния анода-подложки 4 см прирост скорости осаждения в режиме AP по сравнению с DC составляет 1,2-1,5 раза. Измерялись зависимости ионного и электронного токов на подложке от разных параметров разряда. Исследование основано на схеме с двумя потенциальными сетками с фиксированными и переменными потенциалами. Показана возможность формирования кольцевого пароплазменного потока быстрых частиц.
{"title":"Cleaning and sputtering using planar acoustoplasma magnetron","authors":"A. Abrahamyan, A. Mkrtchyan, V. Nalbandyan, H. Hovhannisyan, R. Chilingaryan, A. S. Hakobyan, P. H. Mossoyan","doi":"10.18799/24056537/2018/3/197","DOIUrl":"https://doi.org/10.18799/24056537/2018/3/197","url":null,"abstract":"Абстрактные. В статье описаны полученные экспериментальные результаты для планарного акустоплазменного магнетрона. Небольшой радиус анодной петли позволяет фокусировать и ускорять ионный компонент распыленного материала. В качестве буферного газа использовали аргон. Сравниваются характеристики магнетрона в случае постоянного тока и в акустоплазменном режиме (AP) (с модулированным током, содержащим постоянные и переменные компоненты). Скорость распыления в режиме AP увеличивается. Для медного катода давление газа составляло <1 Па и плотность тока порядка 100 мА / см 2с увеличением расстояния от анода до осажденного субстрата от 2 до 4 см в случае подачи постоянного тока скорость осаждения снижается в 3,3 раза (от 17 до 5 нм / с), в акустоплазменном режиме - в 2 раза (от 13 до 6,4 нм / с). Для расстояния анода-подложки 4 см прирост скорости осаждения в режиме AP по сравнению с DC составляет 1,2-1,5 раза. Измерялись зависимости ионного и электронного токов на подложке от разных параметров разряда. Исследование основано на схеме с двумя потенциальными сетками с фиксированными и переменными потенциалами. Показана возможность формирования кольцевого пароплазменного потока быстрых частиц. ","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74363811","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 : 2018-07-23DOI: 10.18799/24056537/2018/2/189
N. Shul'ga, S. Shulga
The present work reviews the results concerning quantum scattering theory of ultrarelativistic electrons in ultrathin crystals and its comparison with analogous classical results. It deals with an intermediate range of thicknesses, large enough for that the particle motion could not be considered as rectilinear but small enough for that the channeling regime of motion was not established. The quantum theory is based both upon the representation of the scattering amplitude as an integral over the surface surrounding the target, and on the so-called operator method of determination of the wave function as a solution of a Schrödinger-like equation. The latter method implies a wide use of the Fourier technique, both in calculation of each next step in the wave packet evolution, and in moving from the spatial coordinates to the angular ones. The authors compare the quantum differential scattering cross-sections with the classical ones in the considered range of crystal thicknesses and show their resemblances, distinctions and the evolution of these distinctions with the change of the particle energy. The simplest variant of quantum scattering theory based upon the eikonal approximation of quantum mechanics is considered. In the paper the quantum differential scattering cross-section was calculated and its affinity with the classical one was demonstrated. In the preparation of these lecture notes the material of the paper [4] was used.
{"title":"Quantum and classical effects at scattering of high energy charged particles in thin crystals","authors":"N. Shul'ga, S. Shulga","doi":"10.18799/24056537/2018/2/189","DOIUrl":"https://doi.org/10.18799/24056537/2018/2/189","url":null,"abstract":"The present work reviews the results concerning quantum scattering theory of ultrarelativistic electrons in ultrathin crystals and its comparison with analogous classical results. It deals with an intermediate range of thicknesses, large enough for that the particle motion could not be considered as rectilinear but small enough for that the channeling regime of motion was not established. The quantum theory is based both upon the representation of the scattering amplitude as an integral over the surface surrounding the target, and on the so-called operator method of determination of the wave function as a solution of a Schrödinger-like equation. The latter method implies a wide use of the Fourier technique, both in calculation of each next step in the wave packet evolution, and in moving from the spatial coordinates to the angular ones. The authors compare the quantum differential scattering cross-sections with the classical ones in the considered range of crystal thicknesses and show their resemblances, distinctions and the evolution of these distinctions with the change of the particle energy. The simplest variant of quantum scattering theory based upon the eikonal approximation of quantum mechanics is considered. In the paper the quantum differential scattering cross-section was calculated and its affinity with the classical one was demonstrated. In the preparation of these lecture notes the material of the paper [4] was used.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"26 9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79653501","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 : 2018-07-23DOI: 10.18799/24056537/2018/2/186
B. Goldenberg, A. Lemzyakov, V. Nazmov, E. Palchikov
В статье рассматриваются вопросы создания и применения высококонтрастных антискаттерных рентгеновских сеток для рентгеновской визуализации в диапазоне 20-200 КЭВ из Микрофокусных рентгеновских трубок. Структура решетки никеля высоко-аспект-коэффициента прототипа использована для того чтобы рассматривать удар решетки анти -- разброса на дирекционных картинах трубки рентгеновского снимка ИМА-2-150Д. Показано подавление рассеянного излучения и сужение схемы направленного излучения. Контраст прототипа никеля, по-видимому, недостаточен. В статье представлены методы LIGA для изготовления антискаттерных рентгеновских сеток из золота в Сибирском центре Синхротронного и Терагерцового излучения. Описан метод формирования резистивных сетчатых структур с использованием глубинной рентгеновской литографии и показаны тестовые структуры. В настоящее время идет Разработка технологии изготовления рентгеновских сеток против рассеяния.
{"title":"LIGA method of forming high-contrast collimators and anti-scatter grids with high aspect ratio","authors":"B. Goldenberg, A. Lemzyakov, V. Nazmov, E. Palchikov","doi":"10.18799/24056537/2018/2/186","DOIUrl":"https://doi.org/10.18799/24056537/2018/2/186","url":null,"abstract":"В статье рассматриваются вопросы создания и применения высококонтрастных антискаттерных рентгеновских сеток для рентгеновской визуализации в диапазоне 20-200 КЭВ из Микрофокусных рентгеновских трубок. Структура решетки никеля высоко-аспект-коэффициента прототипа использована для того чтобы рассматривать удар решетки анти -- разброса на дирекционных картинах трубки рентгеновского снимка ИМА-2-150Д. Показано подавление рассеянного излучения и сужение схемы направленного излучения. Контраст прототипа никеля, по-видимому, недостаточен. В статье представлены методы LIGA для изготовления антискаттерных рентгеновских сеток из золота в Сибирском центре Синхротронного и Терагерцового излучения. Описан метод формирования резистивных сетчатых структур с использованием глубинной рентгеновской литографии и показаны тестовые структуры. В настоящее время идет Разработка технологии изготовления рентгеновских сеток против рассеяния.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90059121","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 : 2018-07-18DOI: 10.18799/24056537/2018/2/191
V. T. Dinh, А.D. Меkhtiyev, A. D. Alkina
В настоящее время в Казахстане введено семь крупных проектов, направленных на развитие солнечных электростанций общей мощностью 300 МВт, что способствует использованию нетрадиционных возобновляемых источников энергии и разрабатывает технологии для продвижения солнечной энергии. В докладе представлены исследования, посвященные проектированию и строительству солнечной электростанции мощностью 60 МВт в городе Саран. В Карагандинском государственном техническом университете построена экспериментальная солнечная электростанция для изучения технических параметров фотоэлектрических модулей в эксплуатационных условиях и их адаптации к климатическим условиям Караганды, расположенным в Центральном Казахстане. Был проведен статистический анализ данных, и были оценены параметры распределения с критериями для обработки экспериментальных результатов. Выяснилось, что система мониторинга и изменение значений азимутального и зенитного углов солнечных модулей будут эффективными для Караганды. Результаты наблюдений показали, что количество электроэнергии, произведенной в 2014 году, превысило количество, вырабатываемое в 2015 году, в пределах 10% в зависимости от месяца года. Повышение температуры на 1ºC от 25ºC снижает мощность солнечной панели примерно на 0,51%.
{"title":"Practical Evaluation of Polycrystalline Photovoltaic Module Efficiency under Karaganda Conditions","authors":"V. T. Dinh, А.D. Меkhtiyev, A. D. Alkina","doi":"10.18799/24056537/2018/2/191","DOIUrl":"https://doi.org/10.18799/24056537/2018/2/191","url":null,"abstract":"В настоящее время в Казахстане введено семь крупных проектов, направленных на развитие солнечных электростанций общей мощностью 300 МВт, что способствует использованию нетрадиционных возобновляемых источников энергии и разрабатывает технологии для продвижения солнечной энергии. В докладе представлены исследования, посвященные проектированию и строительству солнечной электростанции мощностью 60 МВт в городе Саран. В Карагандинском государственном техническом университете построена экспериментальная солнечная электростанция для изучения технических параметров фотоэлектрических модулей в эксплуатационных условиях и их адаптации к климатическим условиям Караганды, расположенным в Центральном Казахстане. Был проведен статистический анализ данных, и были оценены параметры распределения с критериями для обработки экспериментальных результатов. Выяснилось, что система мониторинга и изменение значений азимутального и зенитного углов солнечных модулей будут эффективными для Караганды. Результаты наблюдений показали, что количество электроэнергии, произведенной в 2014 году, превысило количество, вырабатываемое в 2015 году, в пределах 10% в зависимости от месяца года. Повышение температуры на 1ºC от 25ºC снижает мощность солнечной панели примерно на 0,51%.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76948079","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 : 2018-07-17DOI: 10.18799/24056537/2018/2/190
V. Alexeyev, A. N. Eliseyev, E. Irribarra, I. Kishin, A. Kubankin, R. Nazhmudinov
Текстура поликристаллической фольги вольфрама и никеля изучалась с использованием параметрического рентгеновского излучения (PXR), генерируемого электронами с энергией 7 МэВ. Получены кривые качания PXR из кристаллографических плоскостей (200) для вольфрама и (220) для никеля. Приведено сравнение с аналогичными измерениями, полученными с использованием дифракции широкополосных рентгеновских лучей. Сравнение показало хорошее соответствие результатов, касающихся формы кривых качания и положения максимумов. Однако наблюдалось систематическое несоответствие в значении полного максимума полной ширины.
{"title":"Parametric X-ray radiation and texture of polycrystalline foils","authors":"V. Alexeyev, A. N. Eliseyev, E. Irribarra, I. Kishin, A. Kubankin, R. Nazhmudinov","doi":"10.18799/24056537/2018/2/190","DOIUrl":"https://doi.org/10.18799/24056537/2018/2/190","url":null,"abstract":"Текстура поликристаллической фольги вольфрама и никеля изучалась с использованием параметрического рентгеновского излучения (PXR), генерируемого электронами с энергией 7 МэВ. Получены кривые качания PXR из кристаллографических плоскостей (200) для вольфрама и (220) для никеля. Приведено сравнение с аналогичными измерениями, полученными с использованием дифракции широкополосных рентгеновских лучей. Сравнение показало хорошее соответствие результатов, касающихся формы кривых качания и положения максимумов. Однако наблюдалось систематическое несоответствие в значении полного максимума полной ширины.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76337947","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 : 2018-03-23DOI: 10.18799/24056537/2018/1/181
V. Bushuev, I. Petrov
Using the methods of statistical optics the formation of delayed X-ray pulses in the diffraction reflection of an incident pulse with an arbitrary degree of temporal coherence from a system of parallel crystals with different lattice periods is considered. The results are of interest for constructing delay lines in experiments with a time resolution of the pump-and-probe type and realizing of the self-seeding mode to increase the degree of temporal coherence of the X-ray free-electron laser radiation. A rigorous theory of dynamic diffraction in Bragg geometry is applied to the diffraction reflection of short X-ray pulses from a system of two parallel crystals with arbitrary thicknesses, and also, for a system of two pairs of parallel crystals. The dependence of the delay time and the intensity of the delayed pulses on the thickness of the crystals and the distances between them are analyzed. Since the pulses from the X-ray free electron laser have high spatial coherence, i.e. a small angular divergence, but very poor temporal coherence, special attention is paid to the effect of the degree of temporal coherence on the width of the energy spectrum of the incident pulses and on the influence of this width on the intensity of the delayed pulses.
{"title":"ANALYSIS OF A TWO-CRYSTAL DELAY LINE FOR FEMTOSECOND PULSES OF THE X-RAY FREE ELECTRON LASER","authors":"V. Bushuev, I. Petrov","doi":"10.18799/24056537/2018/1/181","DOIUrl":"https://doi.org/10.18799/24056537/2018/1/181","url":null,"abstract":"Using the methods of statistical optics the formation of delayed X-ray pulses in the diffraction reflection of an incident pulse with an arbitrary degree of temporal coherence from a system of parallel crystals with different lattice periods is considered. The results are of interest for constructing delay lines in experiments with a time resolution of the pump-and-probe type and realizing of the self-seeding mode to increase the degree of temporal coherence of the X-ray free-electron laser radiation. \u0000A rigorous theory of dynamic diffraction in Bragg geometry is applied to the diffraction reflection of short X-ray pulses from a system of two parallel crystals with arbitrary thicknesses, and also, for a system of two pairs of parallel crystals. The dependence of the delay time and the intensity of the delayed pulses on the thickness of the crystals and the distances between them are analyzed. Since the pulses from the X-ray free electron laser have high spatial coherence, i.e. a small angular divergence, but very poor temporal coherence, special attention is paid to the effect of the degree of temporal coherence on the width of the energy spectrum of the incident pulses and on the influence of this width on the intensity of the delayed pulses.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84900652","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 : 2018-03-20DOI: 10.18799/24056537/2018/1/178
A. Artamonov, Еvgeny Plotnikov
The paper addresses physics of thermodynamic fluctuations in temperature and energy. These fluctuations are interrelated and, hence, can affect various micro- and macro systems. It is shown that the thermodynamic uncertainty relation must be taken into account in the physics of superconductivity, in quantum computations and other branches of science, where temperature and energy fluctuations play a critical role. One of the most important applications of quantum thermodynamics is quantum computers. It is assumed that in the near future the state structures will create a specific quantum cryptocurrency obtained using quantum computing. The quantum cryptocurrency exhibits two main features: the maximum reliability (quantum protection against hacking threats) and the possibility of state control (at the moment, only large scientific state centers have quantum computers). The paper reviews the studies aimed to theoretically prove the validity of the thermodynamic uncertainty relation. This relation connects fluctuations in temperature and energy of a system. Other similar relations are considered, including the relationship between fluctuations in pressure and volume, in entropy and temperature, and others. The main purpose of the paper is to validate the thermodynamic analogue of the uncertainty relation that interconnects temperature and energy fluctuations. Experimental data was obtained on the basis of the study of the transport properties of semiconductor devices – transistors. In the experiment, the transport properties of a pair of semiconductor transistors placed on a single silicon crystal were studied. In this system, one transistor was used to determine temperature fluctuations, and the other one was employed to estimate energy fluctuations. The key role of the thermodynamic uncertainty relation in modern thermodynamics has been clarified. The performed experimental studies confirm the validity of the thermodynamic uncertainty relation.
{"title":"THERMODYNAMIC UNCERTAINTY RELATION AS A FUNDAMENTAL ASPECT OF QUANTUM THERMODYNAMICS","authors":"A. Artamonov, Еvgeny Plotnikov","doi":"10.18799/24056537/2018/1/178","DOIUrl":"https://doi.org/10.18799/24056537/2018/1/178","url":null,"abstract":"The paper addresses physics of thermodynamic fluctuations in temperature and energy. These fluctuations are interrelated and, hence, can affect various micro- and macro systems. It is shown that the thermodynamic uncertainty relation must be taken into account in the physics of superconductivity, in quantum computations and other branches of science, where temperature and energy fluctuations play a critical role. One of the most important applications of quantum thermodynamics is quantum computers. It is assumed that in the near future the state structures will create a specific quantum cryptocurrency obtained using quantum computing. The quantum cryptocurrency exhibits two main features: the maximum reliability (quantum protection against hacking threats) and the possibility of state control (at the moment, only large scientific state centers have quantum computers). \u0000The paper reviews the studies aimed to theoretically prove the validity of the thermodynamic uncertainty relation. This relation connects fluctuations in temperature and energy of a system. Other similar relations are considered, including the relationship between fluctuations in pressure and volume, in entropy and temperature, and others. The main purpose of the paper is to validate the thermodynamic analogue of the uncertainty relation that interconnects temperature and energy fluctuations. \u0000Experimental data was obtained on the basis of the study of the transport properties of semiconductor devices – transistors. In the experiment, the transport properties of a pair of semiconductor transistors placed on a single silicon crystal were studied. In this system, one transistor was used to determine temperature fluctuations, and the other one was employed to estimate energy fluctuations. \u0000The key role of the thermodynamic uncertainty relation in modern thermodynamics has been clarified. The performed experimental studies confirm the validity of the thermodynamic uncertainty relation.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84474571","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 : 2018-03-18DOI: 10.18799/24056537/2018/1/180
A. Yurchenko, V. Yugay, E. Neshina
The article presents studies of double-sided solar modules in Kazakhstan. To conduct an experimental research of double-sided solar modules efficiency in the climatic conditions of Central Kazakhstan we have created an experimental solar power plant (SPP) located on the territory of Karaganda State Technical University. The solar power plant consists of four photovoltaic modules of KZ PV 270 M72 type and four photovoltaic modules of FSM-185D type. The rotary system was not used; solar panels are southward (directed to the south). The comparison was made with the solar power plant without orientation system which uses four photovoltaic modules of KZ PV 270 M72 type produced by Astana Solar LLP. The statistical analysis of information with an assessment of parameters of distribution and criteria for processing of results of scientific experiment is carried out. The correlation and regression analysis is performed. The least square method (coefficient calculation) is used in data processing. We have developed the computational model simulating the SPP by means of which the theoretical averaged values of energy amount generated in kWh/day have been obtained, and the actual values have been received by in-use measurements of SPP parameters within a year. The results of this work showed that the use of double-sided solar modules in Kazakhstan is very promising and can be a decisive factor for their widespread use with the tendency to lower prices.
{"title":"EXPERIMENTAL RESEARCH OF DOUBLE-SIDED SOLAR MODULES EFFICIENCY IN THE CLIMATIC CONDITIONS OF CENTRAL KAZAKHSTAN","authors":"A. Yurchenko, V. Yugay, E. Neshina","doi":"10.18799/24056537/2018/1/180","DOIUrl":"https://doi.org/10.18799/24056537/2018/1/180","url":null,"abstract":"The article presents studies of double-sided solar modules in Kazakhstan. To conduct an experimental research of double-sided solar modules efficiency in the climatic conditions of Central Kazakhstan we have created an experimental solar power plant (SPP) located on the territory of Karaganda State Technical University. The solar power plant consists of four photovoltaic modules of KZ PV 270 M72 type and four photovoltaic modules of FSM-185D type. The rotary system was not used; solar panels are southward (directed to the south). The comparison was made with the solar power plant without orientation system which uses four photovoltaic modules of KZ PV 270 M72 type produced by Astana Solar LLP. \u0000The statistical analysis of information with an assessment of parameters of distribution and criteria for processing of results of scientific experiment is carried out. The correlation and regression analysis is performed. The least square method (coefficient calculation) is used in data processing. We have developed the computational model simulating the SPP by means of which the theoretical averaged values of energy amount generated in kWh/day have been obtained, and the actual values have been received by in-use measurements of SPP parameters within a year. The results of this work showed that the use of double-sided solar modules in Kazakhstan is very promising and can be a decisive factor for their widespread use with the tendency to lower prices.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82230199","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 : 2018-03-14DOI: 10.18799/24056537/2018/1/177
S. Chaemchuen, Ji chao Wang, A. Gilani, F. Francis
Metal-organic frameworks (MOFs) which are materials constructed from metal ions/clusters bridged with organic linkers have emerged as an important family of porous materials for widely varying applications. The purification of water polluted with both of organic and inorganic contaminants is a potentially promising application of MOFs since the chemical and thermal properties of the porous materials are easily tunable, e.g. ligand modification, different metal, etc. The demonstration of alignment and the obtained insights facilitate the direction of designing ideal MOF materials with improved water stability for application in water purification. This review gives a brief overview and will be beneficial to the design, functionalization, and promotion of the development of MOFs as adsorbent materials for applications in water purification.
{"title":"METAL-ORGANIC FRAMEWORKS APPLIED FOR WATER PURIFICATION","authors":"S. Chaemchuen, Ji chao Wang, A. Gilani, F. Francis","doi":"10.18799/24056537/2018/1/177","DOIUrl":"https://doi.org/10.18799/24056537/2018/1/177","url":null,"abstract":"Metal-organic frameworks (MOFs) which are materials constructed from metal ions/clusters bridged with organic linkers have emerged as an important family of porous materials for widely varying applications. The purification of water polluted with both of organic and inorganic contaminants is a potentially promising application of MOFs since the chemical and thermal properties of the porous materials are easily tunable, e.g. ligand modification, different metal, etc. The demonstration of alignment and the obtained insights facilitate the direction of designing ideal MOF materials with improved water stability for application in water purification. This review gives a brief overview and will be beneficial to the design, functionalization, and promotion of the development of MOFs as adsorbent materials for applications in water purification.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"304 1-2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72623937","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 : 2017-12-01DOI: 10.1016/j.reffit.2017.06.001
Ajinkya Sable
To increase the usage of solar water heaters in India, a low-cost solar collector made of concrete is experimentally investigated in Pune. The concrete slab consisting metal fibers is placed in a wooden box, with immersed serpentine copper tube and provided with glazing on top. With an objective of improving the efficiency of the collector, a heat transfer augmentation technique (dimple) is fabricated on water carrying serpentine tube. Testing is carried out in rainy, winter and summer seasons for different water flow rates to understand the working of collector throughout the year. Testing results show that average water temperature collected per day is 59 °C–69 °C. Further, to find the exact effect of dimples on outlet water temperature, two completely identical concrete plate collectors–one with a dimpled tube and other with a smooth tube, are designed, fabricated and tested simultaneously. The effect of dimples is observed up to 2.5 °C. Also, a detailed economic analysis and environmental benefits of concrete collector solar water heater for India are investigated in this paper.
{"title":"Experimental and economic analysis of concrete absorber collector solar water heater with use of dimpled tube","authors":"Ajinkya Sable","doi":"10.1016/j.reffit.2017.06.001","DOIUrl":"10.1016/j.reffit.2017.06.001","url":null,"abstract":"<div><p>To increase the usage of solar water heaters in India, a low-cost solar collector made of concrete is experimentally investigated in Pune. The concrete slab consisting metal fibers is placed in a wooden box, with immersed serpentine copper tube and provided with glazing on top. With an objective of improving the efficiency of the collector, a heat transfer augmentation technique (dimple) is fabricated on water carrying serpentine tube. Testing is carried out in rainy, winter and summer seasons for different water flow rates to understand the working of collector throughout the year. Testing results show that average water temperature collected per day is 59<!--> <!-->°C–69<!--> <!-->°C. Further, to find the exact effect of dimples on outlet water temperature, two completely identical concrete plate collectors–one with a dimpled tube and other with a smooth tube, are designed, fabricated and tested simultaneously. The effect of dimples is observed up to 2.5<!--> <!-->°C. Also, a detailed economic analysis and environmental benefits of concrete collector solar water heater for India are investigated in this paper.</p></div>","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"3 4","pages":"Pages 483-490"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.reffit.2017.06.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72569117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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