EFFECT OF LIGHT ON THE RESISTANCE OF Bi/Pb SUPERCONDUCTORS SYNTHESIZED BY SOLAR ENERGY

The aim of the work is to expand the capabilities of solar technologies and areas of practical use of superconductors. The effect of white light on the interaction of superconducting ceramics with a magnet at room temperature was investigated. It has been established that the magnet is “ejected” by ceramic samples of nominal Bi1,7Pb0,3Sr2Ca(n-1)CunOy, (n = 5-20) under the influence of white light and there is no effect in the dark. The resistance of Bi/Pb superconducting ceramics is reduced by exposure to light compared to resistance in the dark. The resistance of ceramics containing higher superconducting higher superconducting phases Tc = 267-295 K is lower in comparison with “nitrogen” ceramics Tc = 110-120

Draft sprinkler irrigation system design development

This article shows the analysis of the parameters of a sprinkler irrigation system following different natural conditions (climate, soil, and hydrogeological) and their analysis in the implementation of the hydraulic calculation and design. According to the majority of literature, several calculations are made for the pressure and discharge during sprinkler irrigation. In the system under analysis, calculations are made on the irrigation processes of pipes and their outflow. It uses Google Earth and AutoCAD. In the hydraulic calculation of the system parameters, it was determined that the area's natural conditions are important and that changes and additions should be made to the calculations

Hydraulic calculation of filtration system in drip irrigation

It is known that water filtration devices are used to increase the efficiency of the drip irrigation system on a large scale. Currently, there are various types of filtering devices, the main purpose of which is to reduce the amount of turbidity in water. In Uzbekistan, vertical and horizontal filters made according to Turkish and Chinese technologies are used. When designing drip irrigation systems, it is necessary to perform a hydraulic calculation. At when performing a hydraulic calculation, it is necessary to calculate the pressure loss in the filtration system and base the pumping unit on this basis. This article presents the results of studies of a vertical filtration device manufactured using Turkish technology. The studies were carried out in natural field conditions, in a filtration system installed in the field of the farm of Ashurov Azizbek Ganievich, located in the Kasbi district of the Kashkadarya region. The filtration system consists of 4 parts and describes studies to determine the coefficient of resistance hydraulic calculation. The studies were conducted in 3 variants. It has been established that the magnitude of pressure losses in the filtration system varies from 2.7 m to 9m. It has been established that the resistance coefficient of the filtration system varies from 61.9 to 247.1 in option 1, from 32.1 to 229.5 in option 2 and from 32.5 to 218.5 in option 3. As a result of the research, a method was developed for determining the resistance coefficient required for the hydraulic calculation of this filter system. A formula for calculating the pressure loss in the filtration room is recommended system