The film slows steadily down along a flat plate in the x direction. Consider a liquid film (ethylene glycol at 300 K) during testing of the chemical process. This processing temperature affects the adhesive properties of the film. Thus, a thermal analysis is needed to find the film velocity, boundary-layer growth, and Nusselt number for evaluating the temperature within the film. This point is needed for sizing of the processing equipment. The spatial profile of temperature remains constant, after the point where the edge of the thermal boundary layer reaches the edge of the film. Then the growth of the thermal boundary layer can be determined.
Before evaluating heat transfer based on the Nusselt number, the film velocity is needed to predict thermal convection within the film. This goal is accomplished by changing the wall temperature at a certain point along the plate, which affects the thermal boundary layer within the film. Effective thermal control is needed to achieve a specified level of adhesive quality. The film flows down under gravity along an inclined plate. Problem 1 A chemical processing technology needs a thinner liquid film coating for better adhesive properties of a new product. Naterer University of Ontario Institute of Technology Oshawa, Ontario, Canada Any use is subject to the Terms of Use as given at the website. The condenser in a large steam power plantĪ concentric tube heat exchanger with specified operating conditionsĭownloaded from Digital Engineering Library McGraw-Hill (Copyright © 2004 The McGraw-Hill Companies. And they deal with real life, which is the hallmark of the calculations throughout the book: Ī chemical processing technology that needs a thinner liquid film coating for better adhesive properties of a new productĪ new passive method of cooling an electronic assembly that uses a closed-loop thermosyphonĭuring casting of an industrial metal component, a more efficient gating and risering system that minimizes the amount of metal poured to produce a good castingĪ furnace wall in a coal-fired power plantĪ reinforced-concrete smokestack that must be lined with a refractory on the inside While they are short, especially when compared to the calculations that make up the bulk of this handbook, these opening calculations are not trivial. Heat-Transfer Calculations opens with eight brief industrial heat-transfer calculations.
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