Dynamic analysis system performance for gas turbine MS9001E before and after development. Reduction of the first mode deformation value from 1.3134 mm to 0.0023 mm at 12 Hz. Using of electrical damper instead of mechanical and suitable oil lubricant for the gas turbine. Replacement of the Journal bearing type with the tilt-pad bearing.Gas turbines are engines an energy plant makes use of for generating the rotary motion to show power generators. The gas turbine is largely a combustion engine for changing natural gas or different liquid fuels to rotational mechanical energy.Often, the gas turbine generates excessive noise or vibrations. In this work, the problem of vibrations occurrence in the gas turbine model MS9001E used in the south Baghdad power station is solved. This is done by making a groove in the bearing pad to increase the oil flow, replacing the bearing type with a tilt-pad bearing type with damper. The finite element method was used in the analysis process by ANSYS program. The results showed a decrease in the values of vibration amplitude, total deformation, stress, and strain.
This search presents a study for some types of fresh water generators FWGs, giving an overview of each type and comparing them with other types, and knowing the design criteria for different designs, as well as studying their advantages and disadvantages, including thermal desalting which types are vapor compression (VC), multi stage flash distillation (MSF), multiple effect distillation (MED), and multiple effecte evaporator, adsorption desalination, membrane distillation (MD), freezing desalination, and hydrate desalination. Then we studied the non-thermal desalination process, which includes electro-dialysis (ED), ion exchange desalination (IX), extraction desalination process, and additional types of fresh water generators FWGs.
The hydrodynamic bearing consists of six pads these pads have the ability to tilt about the clamping edge. Reynolds equation (2D) for dynamically loaded was used to find the generated pressure value throughout the mobility method and the finite difference method. The effects of many parameters of bearing were studied in this paper such as length to diameter ratios, power loss, oil flow rate, Sommerfeld number, load number, friction coefficient and by using the "Ansys program" for stress and strain analysis over the pad surface (white metal), to select the best position location for adjustable pads mechanism from leading edge angle to trailing edge angle of pad central angle (PCA=55°) by taking nine different positions. The best angle for the adjusting member was found about (41.25 o ) after leading angle of the pad, the adjusting member in the maximum pressure region gave minimum radial displacement (elastic deformation) values.
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