INVESTIGATION OF THE INFLUENCE OF THE FLOW STRUCTURE ON THE COEFFICIENT OF HYDRAULIC RESISTANCE

2021 ◽  
pp. 129-133
Author(s):  
T. V. Dikhtyar ◽  
O. N. Zaitsev ◽  
K. S. Dikhtyar ◽  
I. P. Angeluk
Keyword(s):  
Energy Consumption ◽  
Heat Loss ◽  
Hydraulic Resistance ◽  
Flow Structure ◽  
Closed Circuit ◽  
Working Medium ◽  
Reduce Heat Loss ◽  
Coefficient Of Hydraulic Resistance ◽  
The Future ◽  
The Creation

During the movement along a closed circuit, the working flow has to overcome a certain hydraulic resistance. Any pipeline communication has not only straight sections, but also turns, branches, for the creation of which various fittings are used. And shut-off valves are installed to regulate the flow of the working medium. All this creates resistance, so it is very important to perform a number of calculations before starting the installation of the pipeline, including determining the hydraulic resistance. This will allow to reduce heat loss in the future and, accordingly, avoid unnecessary energy consumption.

ASO GUMBALO SEBAGAI INSPIRAS DALAM PENCIPTAAN SENI LUKIS

2018 ◽  
Vol 7 (2) ◽  
pp. 178
Author(s):  
Satri Yadi ◽  
Yuniarti Munaf ◽  
Dhasono Dhasono
Keyword(s):  
Design Phase ◽  
Symbolic Expression ◽  
Ethical Research ◽  
Process Stage ◽  
Form Processing ◽  
The Future ◽  
The Creation ◽  
Visual Strategies ◽  
Work Done ◽  
Exploration Phase

AbstrakAso Gumbalo dalam penciptaan karya seni lukis diilhami dari kehidupan pengembala yang menjadi inspirasi pencipta yang diungkap melalui media seni lukis dengan mengambil ide “Harapan Pengembala” (Aso Gumbalo). Harapan Gembala dapat diartikan sebagai keinginan, kecendrungan dan dorongan hati yang kuat terhadap sesuatu hal yang ingin direalisasikan untuk menjadikan seorang lebih baik dimasa depan. Pengekspresian ide cipta berangkat dari fenomena Aso Gumbalo yang pencipta ungkap dengan ekspresi simbolik kedalam penciptaan karya seni lukis. Metode penciptaan karya ini melalui tahapan yaitu; 1) Tahap eksplorasi adalah tahap pencarian ide-ide dengan melakukan riset emik dan etik untuk pembuatan karya, 2) Tahap perancangan yaitu tahap pembuatan purwarupa yang akan diwujudkan kedalam bentuk karya seni lukis, 3) Tahap proses garapan karya. Konsep dari penciptaan karya merupakan ekspresi simbolik dengan memanfaatkan idiom tradisi, ekspresi tersebut digambarkan pada perwujudan karya menggunakan strategi media dan strategi visual dengan menggunakan konsep pengolahan bentuk, yaitu disformasi dan transformasi dengan melakukan penggabungan beberapa teknik antara lain, teknik plakat, transparan, tekstur semu dan tekstur nyata. Aso Gumbalo sebagai inspirasi yang diungkapkan dalam bentuk karya seni lukis ekspresi simbolik. Karya-karya yang diciptakan pengkarya disajikan dalam bentukpameran.           Kata Kunci:aso gumbalo, ekspresi simbolik, seni lukis.   AbstractAsoGumbalo in the creation of painting works was inspired from the life of the shepherd who became the inspiration of the creator which revealed through the medium of painting by taking the idea of "Hope of the Shepherd" (AsoGumbalo). Shepherd Hope can be interpreted as a strong desire, inclination and encouragement towards something that wants to be realized to make someone better in the future. The expression of copyrighted ideas departs from the phenomenon of AsoGumbalo, which the creator expressed with a symbolic expression into the creation of painting. This method of creating works through several stages, namely; 1) The exploration phase is the stage of searching for ideas by conducting emic and ethical research for the production of works, 2) the design phase that is the prototype-making stage which will be realized in the form of painting, 3) the process stage of the work done. The concept of creation of works is a symbolic expression by utilizing traditional idioms, these expressions are depicted in the realization of the work using media strategies and visual strategies by using the concept of form processing, namely deformation and transformation by combining several techniques, such as plaque, transparent, pseudo-texture and real texture. AsoGumbalo as an inspiration expressed in the form of paintings of symbolic expression. works created by artists are presented in the form of exhibitions.  Keywords:asogumbalo, symbolic expression, painting.  

Improving the efficiency and reliability of electric power generation at incineration plants

2020 ◽  
Vol 12 (4) ◽  
pp. 281-285
Author(s):  
A. V. Martynov ◽  
N. E. Kutko
Keyword(s):  
Low Temperature ◽  
Power Plants ◽  
Thermal Power ◽  
Moscow Region ◽  
Capital Costs ◽  
Working Medium ◽  
The Creation ◽  
Working Media ◽  
Near Future ◽  
Efficiency And Reliability

The article deals with the problem of waste disposal and, accordingly, landfills in the Moscow Region, which have now become the number 1 problem for the environment in Moscow and the Moscow Region. To solve this problem, incineration plants (IP) will be established in the near future. 4 plants will be located in the Moscow Region that will be able to eliminate 2800 thousand tons of waste per year. Burning of waste results in formation of slag making 25% of its volume, which has a very high temperature (1300.1500°C). An arrangement is considered, in which slag is sent to a water bath and heats the water to 50.90°C. This temperature is sufficient to evaporate any low-temperature substance (freons, limiting hydrocarbons, etc.), whereupon the steam of the low-temperature working medium is sent to a turbine, which produces additional electricity. The creation of a low-temperature thermal power plant (TPP) increases the reliability of electricity generation at the IP. The operation of low-temperature TPPs due to the heat of slag is very efficient, their efficiency factor being as high as 40.60%. In addition to the efficiency of TPPs, capital costs for the creation of additional devices at the IP are of great importance. Thermal power plants operating on slag are just such additional devices, so it is necessary to minimize the capital costs of their creation. In addition to equipment for the operation of TPPs, it is necessary to have a working medium in an amount determined by calculations. From the wide variety of working media, which are considered in the article, it is necessary to choose the substance with the lowest cost.

A Rapture of the Nerds? A Comparison between Transhumanist Eschatology and Christian Parousia

2019 ◽  
Vol 24 (2) ◽  
pp. 343-367
Author(s):  
Roberto Paura
Keyword(s):  
Human Brain ◽  
Point Theory ◽  
The Body ◽  
Christian Theology ◽  
Human Beings ◽  
Human Species ◽  
The Future ◽  
The Creation ◽  
The Universe

Transhumanism is one of the main “ideologies of the future” that has emerged in recent decades. Its program for the enhancement of the human species during this century pursues the ultimate goal of immortality, through the creation of human brain emulations. Therefore, transhumanism offers its fol- lowers an explicit eschatology, a vision of the ultimate future of our civilization that in some cases coincides with the ultimate future of the universe, as in Frank Tipler’s Omega Point theory. The essay aims to analyze the points of comparison and opposition between transhumanist and Christian eschatologies, in particular considering the “incarnationist” view of Parousia. After an introduction concern- ing the problems posed by new scientific and cosmological theories to traditional Christian eschatology, causing the debate between “incarnationists” and “escha- tologists,” the article analyzes the transhumanist idea of mind-uploading through the possibility of making emulations of the human brain and perfect simulations of the reality we live in. In the last section the problems raised by these theories are analyzed from the point of Christian theology, in particular the proposal of a transhuman species through the emulation of the body and mind of human beings. The possibility of a transhumanist eschatology in line with the incarnationist view of Parousia is refused.

Computational and theoretical research of the injector block function

2020 ◽  
pp. 123-126
Author(s):  
В.В. Кожемякин ◽  
Р.А. Иванов ◽  
Е.С. Игнатьева
Keyword(s):  
Hydraulic Resistance ◽  
Cross Section ◽  
Flow Rate ◽  
Pressure Dependence ◽  
Theoretical Study ◽  
Water Jet ◽  
Theoretical Research ◽  
Sudden Expansion ◽  
Operating Modes ◽  
Coefficient Of Hydraulic Resistance

Работа посвящена расчетно-теоретическому исследованию работы блока инжекторов. Рассмотрен пароводяной струйный аппарат, который применяется в качестве средства циркуляции теплоносителя первого контура. Подвод дополнительного потока осуществляется на цилиндрическом участке с внезапным расширением сечения через перемычку. Для достижения поставленной цели разработана программа для ЭМВ, в которой смоделирована зависимость давления от нагрузки в контуре, а также проведено расчетно-теоретическое исследование влияние гидравлического сопротивления на расход перемычки. В данной работе рассмотрены только рабочие режимы, т.е. все инжекторы работают как насосы. В ходе работы было установлено, что при нагрузке в 30% увеличиваются коэффициенты инжекции пароводяного струйного аппарата, но характер работы перемычек не меняется. Так же было установлено, что расход через перемычку меняется не пропорционально коэффициенту гидравлического сопротивления перемычки. The paper is devoted to the computational and theoretical study of the injector block operation. A steam-water jet apparatus is considered, which is used as a means of circulating the primary circle coolant. The additional flow is supplied on the cylindrical section with a sudden expansion of the cross-section through the bridge. To achieve this goal, a computer program was developed that modeled the pressure dependence on the load in the circuit, and also a theoretical study of the influence of hydraulic resistance on the flow of the jumper was conducted. In this paper, only operating modes are considered, i.e. all the injectors function as pumps. In the process of the research, it was found that at a load of 30%, the injection coefficients of the steam-water jet apparatus increase, but the nature of the work of the jumpers does not change. It was also found out that the flow rate through the jumper does not change in proportion to the coefficient of hydraulic resistance of the jumper.

scholarly journals Study on the Variable-Temperature Drying Process of Corn Drying in an Industrial Corn-Drying System Equipped with a Self-Adaptive Control Heat Exchanger

2021 ◽  
Vol 11 (6) ◽  
pp. 2772
Author(s):  
Bin Li ◽  
Zhiheng Zeng ◽  
Xuefeng Zhang ◽  
Ye Zhang
Keyword(s):  
Adaptive Control ◽  
Energy Consumption ◽  
Heat Loss ◽  
Thermal Performance ◽  
Variable Temperature ◽  
The Other ◽  
Drying Process ◽  
Drying Kinetic ◽  
Drying System ◽  
Self Adaptive

To realize energy-saving and efficient industrial grain drying, the present work studied the variable-temperature drying process of corn drying in a novel industrial corn-drying system with a heat recycling and self-adaptive control function. The drying kinetics, thermal performance, heat-loss characteristics and the heat-recycling performance of the drying system under different allocations between flue gas and hot air were investigated, and the optimized drying process was proposed and compared with two constant drying processes. The results showed that the optimized drying process exhibited better drying kinetic and thermal performance than the two constant drying processes. More specifically, the total heat loss, total energy consumption and specific energy consumption of the optimized drying process were ascertained to be 36,132.85 MJ, 48,803.99 MJ and 7290.27 kJ/kg, respectively, which were lower than those of the other two processes. On the other hand, the thermal efficiency of the drying chamber for the optimized drying process was ascertained to be varied within the range of 6.81–41.71%. Overall, the validation results showed that the optimized drying process can significantly improve the drying performance of the drying system.

Characteristics Analyses of Energy Consumption for Boom Closed Circuit of Hydraulic Excavators

2012 ◽  
Vol 170-173 ◽  
pp. 3491-3494
Author(s):  
Ming Dong Chen ◽  
Ding Xuan Zhao
Keyword(s):  
Energy Consumption ◽  
Mathematical Models ◽  
Operating Conditions ◽  
Closed Circuit ◽  
Load Drop ◽  
Hydraulic Pump ◽  
Full Load ◽  
Power Characteristics ◽  
Hydraulic Excavators ◽  
Power And Energy

The boom with closed circuit in Hydraulic Excavators, which is made up of motor, hydraulic pump and accumulator, was put forward based on analysis of the operating condition of ordinary hydraulic excavators and mathematical models of system were built. Power characteristics of main power elements were obtained under typical operating conditions, and then the energy consumption characteristics were analyzed. The results show that the installed power and energy consumption will be reduced using boom with closed circuit, and no-load drop and full load rise of boom are the worst operating conditions.

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