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Control-Oriented Modeling of Transcritical Vapor Compression Systems
Rasmussen, B.P.; Shah, R.; Musser, A.B.; Alleyne, Andrew G.; Bullard, C.W.; Hrnjak, P.S.; Miller, N.R.
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https://hdl.handle.net/2142/12122
Description
- Title
- Control-Oriented Modeling of Transcritical Vapor Compression Systems
- Author(s)
- Rasmussen, B.P.
- Shah, R.
- Musser, A.B.
- Alleyne, Andrew G.
- Bullard, C.W.
- Hrnjak, P.S.
- Miller, N.R.
- Issue Date
- 2002-10
- Keyword(s)
- vapor compressor systems
- Date of Ingest
- 2009-06-10T20:41:50Z
- Abstract
- This thesis details the efforts to develop a dynamic model of a transcritical vapor compression system suitable for multivariable control design purposes. The modeling approach is described and the developed models are validated with experimental data. The models are nonlinear, independent of fluid type, and based on first principles. Linearized versions of the nonlinear models are presented. Analysis of the linearized models and empirical models created using system identification techniques suggest that lower order models are adequate for the prediction of dominant system dynamics. Singular perturbation techniques are used to justify model reduction. Based on the reduced order models, the dominant dynamics of these systems are identified and described in terms of physical phenomena. Although all results presented are for a transcritical vapor compression cycle with carbon dioxide as the working fluid, the methodology and results can be extended to both subcritical and transcritical systems.
- Publisher
- Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
- Series/Report Name or Number
- Air Conditioning and Refrigeration Center TR-204
- Type of Resource
- text
- Genre of Resource
- Technical Report
- Language
- en
- Permalink
- http://hdl.handle.net/2142/12122
- Sponsor(s)/Grant Number(s)
- Air Conditioning and Refrigeration Project 123
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