Sökning: "production losses"

Visar resultat 36 - 40 av 290 avhandlingar innehållade orden production losses.

1. 36. Numerical investigation of the flow and instabilities at part-load and speed-no-load in an axial turbine

   Författare :Jelle Kranenbarg; Michel Cervantes; Lisa Prahl Wittberg; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Speed-no-load; vortical flow structures; flow instabilities; rotating stall; mitigation; independent guide vanes; axial turbine; swirling flow; off design operation; URANS; parametric study; blade clearance; head losses; diffusor; GEKO model; flow separation; hydraulic turbine; Strömningslära; Fluid Mechanics;

   Sammanfattning : Global renewable energy requirements rapidly increase with the transition to a fossil-free society. As a result, intermittent energy resources, such as wind- and solar power, have become increasingly popular. However, their energy production varies over time, both in the short- and long term. LÄS MER

3. 37. Towards multi-sensor monitoringand control of Directed Energy Deposition using a Laser Beam

   Författare :Agnieszka Kisielewicz; Fredrik Sikström; Barbara Previtali; Högskolan Väst; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Directed Energy Deposition; Laser Beam; in-situ monitoring; multisensor; resistive pre-heating; Directed Energy Deposition; laserstråle; in-situ övervakning; multisensor; resistiv förvärmning; Production Technology; Produktionsteknik;

   Sammanfattning : Under senare år har omfattande insatser gjorts för att främja mer hållbara flygtransporter i Europa. De konventionella tillverkningsmetoderna som används inom flyg- och rymdindustrin kräver betydande mängder råmaterial, vars utvinning, bearbetning och användning har negativa miljöeffekter. LÄS MER

4. 38. Financial benefits of shop floor productivity improvements

   Författare :Robin Sundkvist; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Productivity; Cash flow; Manufacturing;

   Sammanfattning : The prevailing situation in the global economy calls for innovative productivity investment approaches aiming to prevent further labour force reductions and to restore manufacturers’ competitiveness. The purpose of this research initiative has been to motivate production managers to invest in productivity improvements by establishing a framework that explains how shop floor productivity improvements provide financial benefits. LÄS MER

5. 39. Capturing the life cycle environmental performance of a company’s manufacturing system

   Författare :Birger Löfgren; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; actor; DES; LCA; Manufacturing decision making;

   Sammanfattning : This research has developed methods for manufacturing decision makers to measure manufacturing environmental performance and to predict the environmental consequences of alternative manufacturing system configurations. The ideas behind the methods are based on life-cycle thinking from the perspective of an industrial actor, and its decision makers, in the value chain of a product. LÄS MER

7. 40. Thermal insulation of the combustion chamber in a light duty diesel engine

   Författare :Joop Somhorst; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; temperature swing; crevice effect.; porosity; heat transfer; surface roughness; efficiency; diesel engine; surface sealing; thermal barrier coating;

   Sammanfattning : Reduction of heat loss from the combustion chamber in an engine has great potential to decrease fuel consumption and CO2 emissions. Research on thermal barrier coatings (TBC) has been performed since the early eighties to address this potential. LÄS MER