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Material Selection for a Biomass Heat Exchange Multicriteria Decision Methods: Study Case on Ecuador

Abstract:

Regarding the necessities of exploring efficient energy sources, the co-generation technologies using biomass proven to be a useful alternative. However, in developing countries such as Ecuador, the best materials are not always available causing the need to import them and elevating costs. In this sense, the present research proposes a selection of the best material for a heat exchanger that uses biomass hot fluids by multicriteria decision methods means, taking in consideration the availability on the country. In this way, the method uses a ponderation of the candidate materials by the subjective technique of Analytic Hierarchy Process and a selection using the multicriteria optimization and compromise solution, the technique for order preference by similarity to ideal solution and the complex proportional assessment method, also, the relationship of the methods are correlated by the Speaman’s method. Furthermore, the validation of the selected material is performed by computation fluid dynamic simulations, comparing the best 2 materials, demonstrating that even that copper C12200 is far mor expensive also it outstands steel AISI 1015 on thermal energy transfer, allowing to produce a hotter steam output.