الفهرس 
Introduction to Centrifugal CompressorsOnly 14 pages are availabe for public view
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Abstract
The aim of the thesis is to study, analysis, and determine accurately the axial rotor thrust for centrifugal compressors, are explained with the factors that affect axial rotor for carbon dioxide compressor during operating conditions. Also, the effect of the existence of fouling with gas, which results in the accumulation of fouling on the internal surfaces of the impellers leading to an increase in axial rotor thrust and reduction of the performance of the compressor .The relationship between axial rotor thrust and fouling ratio with time is discussed after complete overhaul for the carbon dioxide compressor. The axial rotor thrust on the carbon dioxide compressor is reduced by placing balance drum on rotor of the compressor in the opposite direction of the axial force which is suitable for all operating conditions of the compressor. The resultant axial force didn’t exceed 50 % of rated bearing load, and the analysis method is then approved to be effective. The final results are summarized as residual thrust load for high pressure rotor for the compressor before modification at design operating condition is equal 13.68 % of rated bearing load, while at the high load without fouling effect for the compressor is equal 58.47 % of rated bearing load while compressor with fouling effect reaches 110.9 % of rated bearing load. The balance drum diameter is found to have a great influence on the rated bearing load. For balance drum diameter Dt of 158.6686 mm, 174.595 mm and 186.065 mm, the highest value of axial thrust force is found to be 93.193 %, 41.22 % and 73.35 % of rated bearing load respectively.