The technological importance of accurate thermophysical property information

Abstract

6, 1979. The session was organized by the Committee on Thermophysical Properties (Committee K-7) of the Heat Transfer Division of the ASME. The mandate of this committee is to encourage scientific research in the field of thermophysical properties and to facilitate the flow of information from science to engineering so as to provide the engineering community with an adequate base for thermophysical property information.Of particular concern to the committee are the complications that arise from lack of communication between the users and generators of thermophysical property information. The user may have access to a computer program yielding thermophysical property values, but often does not know to what extent this information is reliable. As a consequence the technological decisions may unknowingly be affected by a lack of accuracy of the thermophysical property information used in the analysis.To call attention to these problems, the committee organized a session devoted to a discussion of the importance of accurate thermophysical property information for technology. The committee is convinced that this issue deserves wider recognition in the engineering community and expresses its appreciation to the National Bureau of Standards for its willingness to publish the proceedings of the meeting. Jan V. Sengers, Chairman Committee K-7 Heat Transfer Division, ASME iii ABSTRACT These papers were presented at a meeting of the American Society of Mechanical Engineers. The meeting session addressed the role of the accuracy of thermophysical properties data in a number of applications areas.The areas covered included aerospace sciences, where such data have played a central role for a number of years; and geosciences, where first steps are being taken toward using accuracy in describing systems in terms of thermophysical properties. Also included were a discussion of the economic value of accuracy in the chemical process industry, a description of the role of data centers, and a description of several high-»quallty data compilations. An example of a specific problem in the design of a heat exchanger for geothermal applications was also presented with the design uncertainties produced by data in accuracies illustrated.

Investigation of thermophysical properties of alates (swarmers) termite wing as potential raw material for insulation

“…Accurate knowledge of thermo physical properties of materials determines the accuracy of engineering calculations [9], [10], [11], [12], [13]. Putting it in another way, [14] posits that ultra large scale integrated manufacturing has thermo physical parameters as key factors.…”

A high temperature, high pressure reaction-screening apparatus

“…This is due to the importance of these properties in engineering design and process development [1][2][3][4][5]'. An inadequate knowledge of these parameters is costly to industry in financial terms [6][7][8][9][10][11][12].…”

Instrumentation With Computerized Data Acquisition For An Innovative Thermal Conductivity Apparatus

“…It is known that high molecular polymeric solutions and other rheologically complex non-Newtonian fluids are affected by shearing flow: becomes fiber-like, non-uniform and non-isotropic. An innovative method and a novel research apparatus are being developed to measure the thermal conductivity of a fluid while it is subjected to shearing flow, thus measuring the thermal conductivity as a function of temperature and shearing parameters themselves [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Such measurements are essential because the fluid (changing) structure and anisotropicity are flow-induced and dependent.…”