Search for dissertations about: "Compressors"

Showing result 1 - 5 of 46 swedish dissertations containing the word Compressors.

  2. 1. Analytic Parameterization of Stabilizing Controllers for the Moore-Greitzer Compressor Model

    Author : Alina Andersson; Institutionen för reglerteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nonlinear control; Moore-Greitzer compressor model; Dynamic output feedback; Compressors; Nonlinear control systems; Stability robustness; Constraints; Nonlinearity; Lyapunov stability;

    Abstract : This work presents an extension, simplification and application of a design procedure for dynamic output feedback design for systems with nonlinearities satisfying quadratic constraints (QC). Our method was motivated by the challenges of output feedback control design for the three-state Moore-Greitzer (MG) compressor model. READ MORE

  4. 2. Modeling for control of centrifugal compressors

    Author : Oskar Leufvén; Lars Eriksson; Lars Nielsen; José Galindo; Linköpings universitet; []
    Keywords : ;

    Abstract : Downsizing and turbocharging of engines provide a way to meet increasing demands for efficiency and performance in the automotive industry. An engine design is a result of compromises, e.g. the selection of charging system, and the trend is to reduce these compromises by increasing system complexity. READ MORE

  5. 3. Heat Exchange in Liquid Injected Compressors

    Author : Jan-Gunnar Persson; Anders Norén; Fluid mechanics; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : .... READ MORE

  6. 4. Bearing lubrication of refrigeration screw compressors

    Author : Roger Tuomas; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : The bearings in a modern refrigeration screw compressor are lubricated with a mixture of oil and refrigerant. However, little or no published bearing life data is available for the new generation non-chlorinated refrigerants. READ MORE

  7. 5. Properties of oil and refrigerant mixtures : lubrication of ball bearings in refrigeration compressors

    Author : Roger Tuomas; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

    Abstract : A refrigeration compressor contains highly loaded mechanical contacts that have to be lubricated. The lubricant used in refrigeration compressors consists of an oil and refrigerant mixture, and the refrigerant concentration can be up to 40 wt%. READ MORE