Part I. Latent Heat of Vaporization of 1-Pentene. Part II. Thermal Transfer from a Small Wire in Isothermal and Nonisothermal Boundary Flows about a Cylinder

Citation

Cuffel, Robert Fredrick (1964) Part I. Latent Heat of Vaporization of 1-Pentene. Part II. Thermal Transfer from a Small Wire in Isothermal and Nonisothermal Boundary Flows about a Cylinder. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/HD4W-8F71. https://resolver.caltech.edu/CaltechETD:etd-09122002-122032

Abstract

NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Part I The enthalpy change upon vaporization of 1-pentene was experimentally determined by calorimetric measurements at temperatures between 100 [degrees] and 280 [degrees] F. The results are in good agreement with available data at the lower temperatures and are presented in graphical and tabular form. Part II. The heat transfer from a one-mil platinum wire was measured in isothermal and nonisothermal boundary flows about a one-inch copper cylinder. The flow of the 100[degrees] F air stream was normal to the 100 [degree] and 160 [degree] F cylinder at a Reynolds number of 3500. The measured wire Nusselt numbers and smoothed values at a wire temperature loading of 50 [degrees] F are presented as a function of the position within the forward half of the flow about the cylinder for these two cases. For both cases, Nusselt numbers predicted from calculated velocity distributions gave reasonable agreement with the measured values at distances greater than ten wire-diameters from the surface of the cylinder. Xerox copies of the photographic material on page 36 are adequate for reproduction.

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