Water purification and demineralization technology

In this article focuses on the hydrodynamic processes that occur in the solar air heater collector with a bottomless triangular channel working at the expense of solar radiation. Factors that directly affect the heat exchange processes in the working Chamber of the solar air collector with an overhead triangular shape have been analyzed, including air flow in the channels, heating surface structures, acceleration of the heat exchange process and methods for calculating the main indicators such as pressure loss. The solar air heater is one of the main and widely used equipment that can convert solar energy into useful thermal energy. Solar air heaters are economically efficient due to their simple structural structure and can be widely used in household and industrial sectors. The main area of application of solar air heater collectors is heating, in addition to agricultural, fruits and vegetables, including various products, the drying of technological products can be widely used.

Hydrodynamic processes that occur in a solar air heater collector with a triangle channel

Abdukarimov,

Orzimatov,

Usmonov

et al. 2024

Investigation of solar air collectors with concave air duct

Abdukarimov,

Madraximov,

Maxsitaliyev

et al. 2024

In this article study attempts to study the thermal performance of solar air collectors with submersible air ducts and pipes. This study is conducting numerical analysis of the solar collector with pin wings and turbulators to study the effects on the Nusselt number. The paper begins with a numerical analysis of conventional air collectors and compares them with theoretical results. Reynolds numbers range from 2000 to 2500. Next, after the solar collector's performance is evaluated with the bath air with channels, the effects of turbulators of different heights on the Nusselt number are analyzed, followed by the combined effects of pin wings and turbulators. The results are comparable to conventional solar collectors, and suggest that the combined effects of pin wings and turbulators can significantly improve the thermal performance of solar air collectors. The results of this study may contribute to the development of renewable energy-based air conditioning, ventilation and heating systems.

Determination of the stress-strain state of models of steel cylindrical tanks using the “ANSYS” program

Davlyatov,

Jakhongirov,

Abdurakhmonov

et al. 2024

In the world, metal cylindrical shell constructions occupy a leading position in the construction of reservoirs for various purposes, bodies of water pressure generating towers, television towers, chimneys, lighting masts, tower cranes and similar engineering structures. In this direction, in developed countries such as the USA, Germany, Japan, and Russia, special attention is paid to increasing the load-carrying capacity of cylindrical shell structures, ensuring earthquake resistance and priority, reducing metal consumption, preventing the resulting deformations, and thereby ensuring their reliable operation. In this regard, one of the important tasks is to increase the priority of various construction structures, optimize their shape and size, improve existing calculation methods, and develop modern advanced methods of construction preparation and assembly.