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Digital reglering av klimatprocesser

På svenska

Author

Summary, in English

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.

Publishing year

1978

Language

Swedish

Publication/Series

PhD Thesis TFRT-1014

Document type

Dissertation

Publisher

Department of Automatic Control, Lund Institute of Technology (LTH)

Topic

  • Control Engineering
  • Building Technologies

Keywords

  • Uppvärmning
  • Ventilation
  • Reglerteknik
  • Datorstyrning
  • Digital teknik
  • Air conditioning
  • Mathematical models
  • Experimentation
  • Temperature control
  • Humidity control
  • Computer simulations
  • uppvärmning
  • ventilation
  • reglerteknik
  • digital teknik
  • datorstyrning

Status

Published

ISBN/ISSN/Other

  • ISSN: 0346-5500
  • ISSN: 0346-5500

Defence date

30 May 1978

Defence time

10:15

Defence place

Lund, Tekniska fakulteten vid Lunds uiniversitet, sal M:A, Maskinhuset

Opponent

  • [unknown unknown]