Development of property equations for butane and isobutane – preliminary design of household refrigeration cycle

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2009

Author

Cüylan, Gökhan

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This study aims to simulate a vapor compression refrigeration cycle, working with either butane (R-600) or isobutane (R-600a). For this purpose a computer program is written to design a household refrigerator, by modeling a steady-state, vapor compression cycle, with user defined input data. Each refrigerator component can be designed separately, as well as parts of a single refrigeration system in the program. In order to determine the refrigerant thermophysical properties at different states, least squares polynomial equations for different properties of R-600 and R-600a have been developed. Computer program is used for refrigeration cycle analysis, variable speed compressor design and calculating coefficient of performance (COP) and irreversibility of the cycle. Sample-preliminary designs have been carried out for different refrigeration loads, room and cold space temperatures with the program, to compare the performance characteristics of the refrigerants. Designs have been performed at different refrigeration loads, room and cold space temperatures. It is observed that for the same conditions R-600 has slightly better performance characteristics than those of R-600a.

Subject Keywords

Mechanical engineering.

URI

http://etd.lib.metu.edu.tr/upload/12610670/index.pdf
https://hdl.handle.net/11511/18569

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

G. Cüylan, “Development of property equations for butane and isobutane – preliminary design of household refrigeration cycle,” M.S. - Master of Science, Middle East Technical University, 2009.