Sökning: "recuperation"

Visar resultat 11 - 15 av 20 avhandlingar innehållade ordet recuperation.

  1. 11. On Energy Efficient Mobile Hydraulic Systems : with Focus on Linear Actuation

    Författare :Kim Heybroek; Petter Krus; Jan-Ove Palmberg; Torben Ole Andersen; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : In this dissertation, energy efficient hydraulic systems are studied. The research focuses on solutions for linear actuators in mobile applications, with emphasis on construction machines. Alongside the aspect of energy efficiency, the thesis deals with competing aspects in hydraulic system design found in the development of construction machines. LÄS MER

  3. 12. On Motion Control of Linear Incremental Hydraulic Actuators

    Författare :Martin Hochwallner; Petter Krus; Kalevi Huhtala; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Linear Incremental Hydraulic Actuator; novel actuator; linear hydraulic actuator; tracking problem; hydraulic servo system; digital fluid power;

    Sammanfattning : Linear Incremental Hydraulic Actuators combine one or more short-stroke cylinders, and two or more engaging/disengaging mechanisms into one actuator with long, medium, or even unlimited stroke length. The motion of each single short-stroke actuator concatenated by the engaging/disengaging mechanisms forms the motion of the linear incremental hydraulic actuator. LÄS MER

  4. 13. Simulation-Based Optimization of a Series Hydraulic Hybrid Vehicle

    Författare :Katharina Baer; Petter Krus; Liselott Ericson; Seppo Tikkanen; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Hybrid transmissions are characterized by their utilization of more than one form of energy storage. They have the potential to help reduce overall fuel consumption and vehicle emissions by providing the possibility of brake energy recuperation and prime mover operation management. LÄS MER

  5. 14. Telework in academia – Opportunities and challenges for well-being at work

    Författare :Linda Widar; Birgitta Wiitavaara; Marina Heiden; Calle Rosengrad; Högskolan i Gävle; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; telework; academia; psychophysiological activity; physical behaviors; stress; well-being; leadership; phenomenography; distansarbete; akademianställda; psykofysiologisk reaktivitet; fysiska beteenden; stress; välbefinnande; ledarskap; fenomenografi;

    Sammanfattning : Background:Telework reshapes the conventional work practice by providing the flexibility to perform work at new places and times. Telework can increase individual autonomy to control and organize work, but can also place higher demands on the ability to separate work-nonwork in time and space, physically and mentally. LÄS MER

  7. 15. Advanced Gas Turbine Cycles with Water-Air Mixtures as Working Fluid

    Författare :Niklas Ågren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gas turbine cycles; HAT cycles; evaporative cycles; power generation;

    Sammanfattning : Since the early 80's, the worldwide utilization of gas turbines for thermal power generation has increased rapidly. They have less pollution than any other major combustion energy converters. LÄS MER