Fig. 7-10 Log Mean Temperature Difference for Basic Heat Exchanger Arrangements. Source: Babcock & Wilcox nation of the size of heat transfer (exchange) materials. Fouling is a site- and material-specific heat exchange parameter related to the condition of the surface of the heat exchange material. Fouling can result from external tube deposits, such as oil films or solids from a liquid or gaseous stream, internal tube-surface scaling due to precipitation of solid compounds from solution, or corrosion of surfaces, external or internal. Fouling reduces the effectiveness of heat transfer, because it reduces the value of the overall heat transfer coefficient as shown by the equation:

Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

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