Innovative Construction and Petrochemical Technologies

Ethanol Blends Boost Engine Efficiency and Sustainability

Muhammad Rizal Fatoni — 2024-05-16

This study evaluates the performance of an 80% ethanol and 20% pertamax fuel blend as an alternative to gasoline in internal combustion engines. Modifications included reducing the cylinder block by 2mm to modify piston overlap and adjusting the piston and combustion chamber design to increase the compression ratio. The experimental results indicate that this blend significantly enhances engine torque and fuel efficiency. These findings support the use of ethanol blends in automotive engines, offering a sustainable alternative to conventional fuels and contributing to the advancement of renewable energy utilization in the automotive sector.

Technology of Production of Land Surveying Plots

Tojidinova Farangiz Merojidinovna — 2024-03-29

In this article considers the technology of production of land surveying, which includes the geodetic and cartographic foundations of the GCF, coordinate systems with certain parameters for their transition to a single state coordinate system, various technologies for performing cadastral surveys, calculating the area of the land plot, control of geodetic measurements. The research method used is a quantitative juridical research method, which is directed at finding the normative accuracy of land parcels that must meet statutory requirements. The results of this research explain that there are three ways to carry out a cadastral survey and normative accuracy surveys based on land gradations. Thus, each established land survey plots production technology must meet the requirements of statutory regulations, such as civil law, land regulations, forestry regulations, water regulations, urban planning regulations and other requirements for land plots established in accordance with the legislation of the Republic of Uzbekistan.

The Effectiveness of Contemporary Approaches to Housing Stock Reconstruction in Facilitating the Integration of Cutting-Edge Technologies

Saktaganova Nargul — 2024-03-29

The article discusses innovative technologies in the reconstruction of housing stock, as well as what efficiency is achieved as a result. Innovative activity involves the development and implementation of an improved product or service, as a result of which the necessary social or economic benefits can be obtained. Innovative technologies used in the reconstruction of the housing stock make it possible to increase energy efficiency, reliability of load-bearing structures, as well as improve the appearance of the buildings themselves.

Optimizing Low-Speed Wind Turbines: The Impact of Blade Angle and Profile

Muhammad Izwan Khamzah — 2024-05-03

This study investigates the optimization of horizontal axis wind turbines for low-speed wind conditions in Indonesia, focusing on blade configuration. Through experimental methods, the research evaluates how variations in the number of blades, blade profiles, and particularly the alpha angle of the NACA 0021 rotor blade affect turbine efficiency. Findings reveal that adjusting the blade angle significantly enhances the power coefficient, offering a potential pathway to increase the efficiency of wind turbines under low-speed conditions. This advancement could contribute to more sustainable and efficient use of wind energy globally.

Boosting Engine Efficiency with Ethanol Blends

M Muzaki Sodikin — 2024-05-03

This study investigates the performance of ethanol-blended fuels in internal combustion engines to address the rising global energy demands and the environmental impact of fossil fuels. Employing a Honda Scoopy 110 cc engine, the research examines blends of 17% and 25% ethanol with standard RON 90 and RON 92 gasoline at engine speeds between 2000 and 5000 RPM. Results indicate that ethanol blends reduce fuel consumption and maintain competitive torque and power outputs, with the 17% ethanol blend in RON 90 gasoline showing the lowest fuel consumption at 0.0335 Kg/HP.h and the highest torque at 22.41 Nm. These findings underscore the potential of ethanol as a sustainable alternative fuel, suggesting significant implications for enhancing fuel efficiency and reducing environmental impacts in automotive technologies.