Sökning: "siemens industrial turbomachinery"

Visar resultat 21 - 25 av 82 uppsatser innehållade orden siemens industrial turbomachinery.

1. 21. Flödesmätning i smörjoljesystem med bärbar ultraljudsmätare : Underlag till en arbetsinstruktion

   Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Mikrosystemteknik

   Författare :Daniel Magnusson; [2016]
   Nyckelord :Flödesmätning; ultraljudsmätare; arbetsinstruktion; felsökning; service;

   Sammanfattning :  This thesis was conducted at Siemens Industrial Turbomachinery (SIT) under a period of ten weeks. Siemens service department at this company takes care of the aftermarket of the turbines and provides inspection, spare parts and measures to increase the efficiency of the machines. SIT provides also oil lubrication systems. LÄS MER

3. 22. Method Development for Heat Transfer Predictions in Channel Flows : An efficient CFD approach for ribbed stationary channels

   Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

   Författare :Martin Leskovec; [2016]
   Nyckelord :CFD; roughened channels; heat transfer coefficient; HTC; Nu number; CAE process;

   Sammanfattning : Gas turbines are today used in numerous industrial and aeronautical applications. To increase the specific power output and efficiency, a high turbine inlet gas temperature is desired. The high temperature leads to the need of cooling critical components in the hot gas path. LÄS MER

4. 23. Simulation of Gas Channel Temperatures during Transients for SGT-800

   Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

   Författare :Tobias Johansson; [2016]
   Nyckelord :Technology and Engineering;

   Sammanfattning : Siemens Industrial Turbomachinery has developed dynamic gas turbine models to compute performance parameters such as temperature, pressure, mass flow and power during transients. Results from the current dynamic model correspond to measured data except for gas channel temperatures that change too fast during transients. LÄS MER

5. 24. Numerical investigation of a transonic nozzle guide vane under elevated loading

   Master-uppsats, KTH/Energiteknik

   Författare :Danilo Boccadamo; [2016]
   Nyckelord :;

   Sammanfattning : Despite many new investigations over the last years, there is no indication that alternative energy conversion technologies will overtake the place of turbomachinery. Hence thermal turbines are still the most dominant movers for electricity generation. LÄS MER

7. 25. A CFD study of the losses in sharp and radiused orifices with and without inlet cross-flow

   Master-uppsats, KTH/Mekanik

   Författare :Tien Nguyen; [2015]
   Nyckelord :;

   Sammanfattning : Increasing efficiency demands on modern gas turbines require higher operating temperatures which increase the thermal load on the materials. The secondary air system transfers heat away from the components to ensure that the operating conditions are under the components’ critical values. LÄS MER