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Articles by Murat Kunelbayev
Total Records ( 5 ) for Murat Kunelbayev
  Seitkazy Keshuov , Rashit Omarov , Amanzhol Tokmoldayev , Dauren Omar , Murat Kunelbayev and Sabit Amirseit
  The dynamics of total consumption of electric and thermal energy in agriculture and in the whole country is considered in the study. The analysis of developments in the field of solar and bioenergetics their current state and possible directions of research on the use of RES in livestock production is given. A mathematical model of a hybrid energy supply system based on a photo-solar-bio energetic installation is developed which makes it possible to reduce the energy intensity of agricultural production. Experimental results of studies of the effectiveness of the proposed hydro breeding system are presented.
  Rashit Omarov , SeitkazyKeshuov , Dauren Omar , Asan Baibolov , Amanzhol Tokmoldayev and Murat Kunelbayev
  This study deals with the study and calculation of the thermal conductivity of the tube solar collector with heat pump. The basic equations describing the energy balance of the flat solar collector with the heat pump. This study discusses the calculation of the amount of heat in the heat pump in the combined system of solar heating. A heat balance equation of the heat pump in the integrated system of solar heating method for computing was developed using the techniques above, determine the amount of heat and energy balance equation. The results show that the arrangement of the compressor in the evaporator zone of impact. The evaporator absorbs the heat emitted from the surface of the compressor which is added to the main flow. In view of the fact that the temperature difference between the compressor stack (about 800°C) and the evaporator (about 180°C) is 600°C strand it suggests that the main flow is radioactive heat transfer between the surfaces. As is known in the heat radiation is eliminated between the compressor and the evaporator by setting the screen there between. Accordingly, there has been some decrease in performance. However, even under these conditions the compressor does not overheat because its convective cooling is maintained. Energy conversion efficiency (KPI) are from 2.5-4.5 units.
  Rashit Omarov , Seitkazy Keshuov , Dauren Omar , Murat Kunelbayev and Sabit Amirseit
  Solar Photovoltaic Modules (SPM) are popular in agriculture. For a lot of small farms, the main source of electrical energy is electric generators driven by Internal Combustion Engines (ICE), since installation of electrical networks is economically unprofitable. In these conditions, SPM are economically and environmentally promising, since it does not require the consumption of fuels and lubricants does not harm the environment. Determination of the main SPM operating parameters in 2 modes is considered in this research. In the cases when the panels oriented towards the sun (tracking mode) and in a stationary state with orientation to the south (without tracking mode). The dependences of current, voltage and power on time and density of solar radiation were measured. Accordingly, the voltage and current of Transportable Photovoltaic Unit (TPU), the charging current and the voltage of the batteries, the voltage at the output of the inverter, the temperature and humidity of the outside air and the electrical energy consumption by the electric receivers were recorded. The study of the TPU operation showed that the mode of orientation to the sun increases the daytime power generation by 25, …, 33% in comparison with the fixed installation of Solar Panels (SP). The analysis showed the discrepancy between SP passport data and the experimental results. The decrease in electricity generation was 14% compared to the expected estimates.
  Yedilkhan Amirgaliyev , Murat Kunelbayev , Aliya Kalizhanova , Didar Yedilkhan , Omirlan Auelbekov , Nazbek Kataev and Ainur Kozbakova
  This study deals with the study and the calculation of the coefficient of capture of solar radiation of a flat solar collector. The basic equations describing the energy balance of the flat solar collector. It is known that the surface of the transparent insulation the heat coming down: the flow of direct sunlight, the flow of the Sun’s rays reflected from the mirrors and the flow of the scattered (diffuse) radiation from the sky, from the surroundings which are absorbed by the individual layers of the heating surface. Compiled energy balance equation, a single layer of the heat element. Because compiled equation for steady state surface density of captured radiation is equal to the surface density of the heat flow withdrawn from the working medium of the receiver element (coolant) or the average temperature of the latter does not differ from the ambient temperature. In the above case, capture ratio is plant efficiency. The equation shows that the surface density of the heat flow, coolant withdrawn from the receiver can be calculated as the surface density of the trapped radiation minus the conditional heat loss and efficient heat consumption for heating system. Flow captured radiation is not dependent on the heat capacity of the system. Through analysis and optimization of the solar energy collector carried on a flat cavity with a modified receiver with regard to the content of incident solar radiation.
  Yerzhan Belyaev , Diaz Baiseitov , Murat Kunelbayev , Amantur Umarov and Maxatbek Satymbekov
  Calculations of exergy (heat loss) were carried out on different types of combined solar collectors and heat pump systems to determine the most appropriate version of the heating and hot water needs in Kazakhstan in harsh climatic conditions. To achieve this goal, a mathematical model was applied, representing a set of formulas for the sequential elementary calculation of temperature data from a solar heating system. An algorithm was developed to calculate the heat loss of both the solar collector system and the solar-assisted heat pump. The significance and importance of the achieved results is high, since, the developed and used algorithm allows detecting inefficient components of the solar heating system. In cold climatic conditions, the exterior performance of the solar collector ranges from 5-27%. Capacitor efficiency ranges between 9-15%. The least effective is the compressor, the exergy values of which vary within 10-88%.
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