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Comment PDF Heat Transfer

Engineering Practice: Estimating Thermal Conductivity of Hydrocarbons

By Alireza Bahadori Curtin University of Technology, Saeid Mokhatab Tehran Raymand Consulting Engineers |

The thermal conductivity of hydrocarbons is an essential parameter that needs to be known when designing heat transfer equipment. Presented here is a simple-to-use correlation that was developed for predicting thermal conductivities of liquid paraffin hydrocarbons, petroleum fractions and atmospheric natural hydrocarbon gases as a function of temperature and molecular weight or relative density. Results show that the proposed correlation has a very good agreement with reported data. Introduction The thermal conductivity is an important property of liquids providing a measure of a materials’ ability to conduct heat. It is normally defined in terms of the quantity of heat transmitted due to a unit temperature gradient, under steady conditions, in a direction normal to a surface of unit area. Heat transfer by conduction involves transfer of energy within a material without any motion of the material as a whole. From a process engineer’s view point, a convenient and easy-to-use approach for predicting physical properties is the use of commercial software and the appropriate equations of state. However, such an approach does not work equally well for all properties. Accurate and reliable values can be determined for some properties,…
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