Units and Dimensions
Units used to designate magnitude of a dimension have evolved based on common usage and instruments available for measurement. Two major systems for measurement have been used: the English system, which was used primarily in industry, and the metric system, which was used in the sciences. The confusion that results from the use of various terms to represent the same dimension has led to the development of a common system of units that is proposed for use in both science and industry. The Système International d’Unites (International System of Units) and the official international designation SIwas adopted in 1960 by the General Conference onWeights and Measures. This body consists of delegates from member countries of the Meter Convention, and it meets at least once every 6 years. There are at least 44 countries represented in this convention, one of which is the United States.
KeywordsNusselt Number Conversion Factor Base Unit Biot Number Dimensionless Group
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- American National Standards Institute 1976. American National Standard, metric practice. Am. Natl. Stand. Inst. IIEE Std. 268–1976. IEEE, New York.Google Scholar
- American Society for Agricultural Engineers 1978. Use of customary and SI (metric) units. American Society for Agricultural Engineers Yearbook—l978. ASAE, St. Joseph, MI.Google Scholar
- Benson, S. W. 1971. Chemical Calculations. 3rd ed. John Wiley & Sons, New York.Google Scholar
- Feldner, R. M. and Rousseau, R. W. 1999. Elementary Principles of Chemical Processes. 2nd ed. John Wiley & Sons, New York.Google Scholar
- Himmelblau, D. M. 1967. Basic Principles and Calculations in Chemical Engineering. 2nd ed. Prentice-Hall, Englewood Cliffs, NJ.Google Scholar
- Kelly, F. H. C. 1963. Practical Mathematics for Chemists. Butterworths, London.Google Scholar
- McCabe, W. L., Smith, J. C., and Harriott, P. 1985. Unit Operations of Chemical Engineering. 4th ed. McGraw-Hill Book Co., New York.Google Scholar
- Obert, E. and Young, R. L. 1962. Elements of Thermodynamics and Heat Transfer. McGraw-Hill Book Co., New York.Google Scholar
- Watson, E. L. and Harper, J. C. 1988. Elements of Food Engineering. 2nd ed. Van Nostrand Reinhold Co., New York.Google Scholar