Moving-boundary heat exchanger models with variable outlet phase

Brian D. Eldredge, Bryan P. Rasmussen, Andrew G. Alleyne

Research output: Contribution to journalArticlepeer-review

Abstract

Vapor compression cycle systems using accumulators and receivers inherently operate at or near a transition point involving changes of phase at the heat exchanger outlets. This work introduces a condenser/receiver model and an evaporator/accumulator model developed in the moving-boundary framework. These models use a novel extension of physical variable definitions to account for variations in refrigerant exit phase. Systemlevel model validation results, which demonstrate the validity of the new models, are presented. The model accuracy is improved by recognizing the sensitivity of the models to refrigerant mass flow rate. The approach developed and the validated models provide a valuable tool for dynamic analysis and control design for vapor compression cycle systems.

Original languageEnglish (US)
Pages (from-to)610031-6100312
Number of pages5490282
JournalJournal of Dynamic Systems, Measurement and Control, Transactions of the ASME
Volume130
Issue number6
DOIs
StatePublished - Nov 2008

Keywords

  • Dynamic models
  • Thermo-fluid systems
  • Vapor compression cycle

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Information Systems
  • Instrumentation
  • Mechanical Engineering
  • Computer Science Applications

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