Some non-specialists raised problems about the turbine pumping system in Al-Faw oil depot, and it reached Office of Internal Oversight some deputies Parliament, so I decided through research to clarify basis on which rely appropriate systems achieve required operational conditions with least energy expended And this reflected choice that were chosen work Al -Faw depot. Through research, was fou...

Background: Impedance pump is a simple valveless pumping mechanism, which transports fluid through the mismatch of impedance in the system. Mismatch in impedance occurs when an asymmetrical periodic excitation is exerted on the elastic tube. Periodic asymmetrical excitation will then produce a unidirectional flow. Considering a multi-stage system with a single and constant power source, it is w...

Since the introduction of portable devices in 1957 by Dr. Norman Holter, heart rate (HR) monitors have been extensively used in clinical practices as a diagnostic and prognostic tool, mainly for cardiovascular diseases. In parallel, the use of HR monitoring devices by sport physiologists to analyze the response of the body to exercise or training stress and to evaluate the training level of ath...

Compact semiconductor lasers emitting single-frequency, diffraction limited beams at a continuous-wave (CW) optical power of several Watts are required for many applications including frequency conversion, free-space communications, and pumping of fibre lasers and fibre amplifiers. We discuss a mathematical model for the dynamics of such lasers. In order to simulate the long time dynamical beha...

Two-stage decomposition-dynamic programming aggregation method has been first proposed and introduced to solve the mathematical model of daily optimal operation for parallel pumping stations with adjustable-blade units. Taking minimal daily electricity cost of single pump station as objective function, the water quantity pumped by each station as coordinated variable, by means of the type of th...

El Batts Pumping station is located in Fayoum Governorate on the right bank of existing Batts drain about 120 km south of Cairo, at entrance of 0.6 km north-west of Tamiya village. It is equipped with four vertical mixed flow pumping units. The main objectives of this pumping station are to increase the cultivated area by 10000 feddan in the north of Bahr Wahby, improve the irrigation for 20000...

The use of pumps linked in parallel or series in large scale pipe systems is usually inevitable, to meet the required head and discharge. Transient flow occurs following a pump failure in a pump group as a result of variations in the flow rate. This research is an investigation about waterhammer caused by one or more pump-switch off in a pump group when they are connected in parallel. The opera...

Reliability, along with energy efficiency, is an important characteristic of pump units in various applications. In practical applications, it to strike a balance between reliability and efficiency. These indicators strongly depend on the applied control method unit. This study analyzes trade-off for regulating system three parallel pumps equipped only one frequency converter (multi-pump single...

this paper presents a relatively new management model for the optimal design and operation of irrigation water pumping systems. the model makes use of the newly introduced particle swarm optimization algorithm. a two step optimization model is developed and solved with the particle swarm optimization method. the model first carries out an exhaustive enumeration search for all feasible sets of p...