Essays about: "Åldring"

Showing result 21 - 25 of 27 essays containing the word Åldring.

  1. 21. Problem Identification for Product Development Opportunities of Wine Refrigerators

    University essay from KTH/Energiteknik

    Author : Malin Maria Erlandsson; Petra Näsström; [2018]
    Keywords : ;

    Abstract : Both value and flavor of wines can improve with time if stored properly. The factors with the most profound effect on the wine are light, humidity, temperature, vibrations, and ventilation. Light consisting of shorter wavelengths, under 450 nm, are dangerous for wine and can destroy the structure in wine. READ MORE

  3. 22. Investigation of the effect of moisture in transformers on the aging of the solid insulation for dynamic rating applications

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Christos Stefanou; [2018]
    Keywords : Dynamic rating; dynamic transformer rating; moisture in transformers; aging of transformer insulation; cellulose aging; solid insulation aging; experiment.; Dynamisk last; dynamisk transformatorklassificering; fukt i transformatorer; åldrande av transformatorisolation; åldrande av cellulosa; åldrande av fast isolation; experiment.;

    Abstract : In the present thesis an investigation is performed for the effect of moisture contenton the aging of the solid insulation for transformers that are dynamically loaded. Theinvestigation is based on a theoretical analysis and a model. READ MORE

  4. 23. Ageing tests of cemented carbide powders : An investigation for increased quality of metal cutting inserts

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Eric Rösth; [2018]
    Keywords : cemented carbide; ageing; PEG; water absorption; sintering; DEK; DMK; coercivity; saturation magnetization; Hårdmetall; åldring;

    Abstract : In this study, the ageing effects on powder used for cemented carbide insert production are examined. Ageing is throughout this study, defined as the time dependent change of the magnetic properties: coercive field strength and saturation magnetization. READ MORE

  5. 24. Asset management of electrical transportation systems using alternative charging technologies: case study Stockholm Arlanda Airport

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Filip Jarnehammar; [2018]
    Keywords : ;

    Abstract : In order to tackle the increasing problem of emitting greenhouse gases, electricityhas been seen as one way forward. The ability to provide energy from renewablesources is something that has to be made universal in the very near future. One ofthe larger parts of the problem is the transportation industry. READ MORE

  6. 25. Charging time estimation and study of charging behavior for automotive Li-ion battery cells using a Matlab/Simulink model

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Wenzhuo Wu; [2016]
    Keywords : Charging time estimation; HIL; Li-ion battery; Passive balancing; Hardware-in-the-loop; laddtid; litiumjonbatteri; passiv balansering;

    Abstract : An accurate estimation of the charging time of an automotive traction battery is possible only with the knowledge of different parameters of the battery and the vehicle. If this information is not available to the driver, the full time needed for charging of the battery may have to be assessed only from experience. READ MORE