Conference paper
Power Consumption in Refrigeration Systems - Modeling for Optimization
Scientific Computing, Department of Informatics and Mathematical Modeling, Technical University of Denmark1
Department of Informatics and Mathematical Modeling, Technical University of Denmark2
Danfoss AS3
Institute for Product Development, Technical University of Denmark4
Center for Energy Resources Engineering, Centers, Technical University of Denmark5
Refrigeration systems consume a substantial amount of energy. Taking for instance supermarket refrigeration systems as an example they can account for up to 50−80% of the total energy consumption in the supermarket. Due to the thermal capacity made up by the refrigerated goods in the system there is a possibility for optimizing the power consumption by utilizing load shifting strategies.
This paper describes the dynamics and the modeling of a vapor compression refrigeration system needed for sufficiently realistic estimation of the power consumption and its minimization. This leads to a non-convex function with possibly multiple extrema. Such a function can not directly be optimized by standard methods and a qualitative analysis of the system’s constraints is presented.
The description of power consumption contains nonlinear terms which are approximated by linear functions in the control variables and the error by doing so is investigated. Finally a minimization procedure for the presented problem is suggested.
Language: | English |
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Publisher: | IEEE |
Year: | 2011 |
Pages: | 234-239 |
Proceedings: | International Symposium on Advanced Control of Industrial Processes |
ISBN: | 1424474604 , 988172550X , 9781424474608 and 9789881725509 |
Types: | Conference paper |
ORCIDs: | Jørgensen, John Bagterp |
Heating Minimization Power demand Refrigerants Valves energy consumption load shifting minimization nonconvex function optimisation optimization power consumption refrigerated goods refrigeration specific heat supermarket refrigeration systems thermal capacity vapor compression refrigeration system