ENERGY EFFICIENCY ASSESSMENT AND OPTIMIZATION OF PUMPING SYSTEMS IN URBAN DRAINAGE NETWORKS: A CASE STUDY OF BUKHARA

2026-10-13T16:16:16+00:00

The improvement of energy efficiency in urban drainage pumping systems represents an important engineering challenge, particularly in arid and semi-arid regions where groundwater regulation, waterlogging prevention, and sustainable infrastructure management require continuous attention. This study investigates the energy performance of pumping systems associated with urban drainage networks in Bukhara, Uzbekistan, and develops a methodological framework for evaluating electricity consumption, hydraulic efficiency, operational performance, and potential energy-saving strategies. The research focuses on the relationship between pumping capacity, hydraulic head, motor efficiency, drainage discharge, and energy consumption under variable operating conditions. A literature-based analytical methodology is employed, incorporating established hydraulic equations, pump performance assessment principles, energy consumption indicators, and internationally recognized engineering recommendations. Particular attention is given to specific energy consumption, overall pumping efficiency, hydraulic losses, equipment operating schedules, and the application of variable frequency drives for improving operational flexibility. The analysis identifies several factors that may reduce pumping efficiency, including inappropriate pump sizing, inefficient operating points, excessive hydraulic resistance, equipment deterioration, and insufficient coordination between pumping operations and drainage water inflow. An integrated optimization framework is proposed, combining energy auditing, hydraulic performance assessment, equipment modernization, preventive maintenance, and automated pump control. The findings indicate that energy-efficient drainage management should prioritize the reduction of unnecessary pumping operations, the selection of appropriate pump operating conditions, and the continuous monitoring of electricity consumption relative to the volume of discharged water. The study provides a methodological foundation for evaluating energy-saving opportunities in Bukhara's drainage infrastructure and offers practical recommendations for improving the economic and environmental sustainability of urban water management systems.

THE INDIGOFERA (INDIGOFERA TINCTORIA L.) PLANT: ITS ORIGINS, SIGNIFICANCE, AND ADAPTABILITY TO SALINE SOIL CONDITIONS

2026-10-10T14:45:18+00:00

This article highlights the significance of Indigofera (Indigofera tinctoria L.)—a non-traditional legume crop cultivated in the saline soil conditions of the Jizzakh region—and examines the role of biostimulants in grain formation and yield. It is scientifically demonstrated that sowing 3 kg per hectare during the third ten-day period of April results in a grain yield of 20.9 t/ha (an increase of 7.2 t/ha compared to the control), a 1,000-grain weight of 0.5 g, and a seedling count of 107 during the germination and flowering stages.

Journal of Agriculture & Horticulture

ENERGY EFFICIENCY ASSESSMENT AND OPTIMIZATION OF PUMPING SYSTEMS IN URBAN DRAINAGE NETWORKS: A CASE STUDY OF BUKHARA

THE INDIGOFERA (INDIGOFERA TINCTORIA L.) PLANT: ITS ORIGINS, SIGNIFICANCE, AND ADAPTABILITY TO SALINE SOIL CONDITIONS