Literaturnachweis - Detailanzeige
| Autor/inn/en | Wang, Dake; Khan, Haris |
|---|---|
| Titel | Understanding the Thermal Efficiency of Heat Engines: A Graphical Approach |
| Quelle | In: Physics Education, 48 (2013) 2, S.169-175 (7 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0031-9120 |
| DOI | 10.1088/0031-9120/48/2/169 |
| Schlagwörter | Thermodynamics; Scientific Principles; Engines; Science Instruction; Physics; Energy; College Science; Mathematics; Fuels; Scientific Concepts; Graphs |
| Abstract | This paper presents a comparative study of the thermal efficiencies of mechanical heat engines by using a graphical approach based on the pressure-volume ("P-V") diagram. Three types of idealized thermodynamic cycles--the Otto, the Diesel and the Brayton--are compared in pairs. Given the same temperature range within which the engines operate, the Brayton cycle is shown to have the highest efficiency. The effect of the compression ratio on the efficiency is also demonstrated. As the use of algebra and calculus is kept at a minimal level, the differences in the thermal efficiencies are illustrated in an intuitive and straightforward manner, making this approach suitable for teaching thermodynamics and related energy issues for a wide audience base. (Contains 4 figures.) (As Provided). |
| Anmerkungen | Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://journals.iop.org |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2017/4/10 |
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