A transient fluid and thermodynamic model of a compressed air system

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dc.contributor Moynihan, Gary P.
dc.contributor Taylor, Robert P.
dc.contributor.advisor Woodbury, Keith A.
dc.contributor.author Chappell, Joseph Stephen
dc.date.accessioned 2017-03-01T16:24:20Z
dc.date.available 2017-03-01T16:24:20Z
dc.date.issued 2011
dc.identifier.other u0015_0000001_0000816
dc.identifier.other Chappell_alatus_0004M_10947
dc.identifier.uri https://ir.ua.edu/handle/123456789/1320
dc.description Electronic Thesis or Dissertation
dc.description.abstract Air compressors are significant energy users in nearly every industrial facility. Air compressors have become a primary focus of industrial energy audits because they are vital for production processes but are very energy inefficient machines. Industrial energy auditors often perform a detailed energy analysis on a compressed air system using logged amperage data from the air compressors in the system. Most of the current air compressor simulation tools use logged power data to perform simulation according to an electrical analysis. These tools perform their analysis based on averaged power draws taken from the logged amperage data. The airflow demands of a compressed air system are then calculated based on the general shape of the performance profile. This static analysis of a compressed air system's operation invariably prompts an inquisitive auditor to dynamically model a compressed air system. While the current compressed air software tools are useful for modeling systems with an electrical analysis, a potential exists to develop a modeling tool with a sound physics and thermodynamics based approach. This thesis responds to the need for a transient thermodynamic compressed air system model. The central focus of the resulting investigation is the generation of a comprehensive compressed air model to be used in analyzing recorded airflow supply data from a rotary screw air compressor operating under three different capacity control methods. The rotary screw compressor is chosen as a focus of this work because of its dominance in the industrial air compressor market. System responses will be tracked for verification of the compressed air model. Several compressed air system examples will be evaluated to reflect compressor operation under adequate and inadequate storage. The main objective of this report is to: educate the reader on the performance of current rotary screw compressors, describe the generation of a transient thermodynamic compressed air model, analyze several different compressed air systems, and evaluate these compressed air systems through quantitative and qualitative comparisons.
dc.format.extent 147 p.
dc.format.medium electronic
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher University of Alabama Libraries
dc.relation.ispartof The University of Alabama Electronic Theses and Dissertations
dc.relation.ispartof The University of Alabama Libraries Digital Collections
dc.relation.hasversion born digital
dc.rights All rights reserved by the author unless otherwise indicated.
dc.subject.other Engineering
dc.title A transient fluid and thermodynamic model of a compressed air system
dc.type thesis
dc.type text
etdms.degree.department University of Alabama. Dept. of Mechanical Engineering
etdms.degree.discipline Mechanical Engineering
etdms.degree.grantor The University of Alabama
etdms.degree.level master's
etdms.degree.name M.S.

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