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Sökning: L4X0:0346 5500

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  • Jensen, Lars (författare)
  • Digital reglering av klimatprocesser
  • 1978
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Results from a research project supported by the Swedish Council for Building Research are reported. The main task was to improve climate control technology. The work was focused on digital control. It was split up into three main tasks: model building, design of regulators, and fullscale experiments. Several rooms, airducts, and heat exchangers were modelled. Simple dynamic models have been derived from mass and energy balance equations. The correspondance with experimental models is rather crude. The main problem is to choose certain heat transfer coefficients. Several control experiments showed that the PI-regulator gives a good result in many cases. Adjustment of regulator parameters can be very time consuming. In some cases a solution is to use a self-tuning regulator. A simple self-tuning regulator, called the quotient regulator, has been developed. The computer technology makes it possible to implement better control principles. The experiments show that there is room for improvements of climate control systems and that substantial energy savings can sometimes be obtained. An interpretative process control language suitable for climate control is also described.
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  • Master's Theses in Automatic Control 1977-1978
  • 1979
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • This report contains abstracts of master thesis (examensarbete) made at the Department of Automatic Control, Lund, during the academic year 77/78. During this year 16 theses were made by 23 students. The theses are written in Swedish with an English abstract.
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  • Resultat 1-10 av 194

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