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Department of Energy Politecnico di Milano Author Pag.1 of 9 Date 28/06/2019 Milan, 11nd June 2019 Exam – Advanced Thermodynamic and Thermoeconomics 17-06-2019 Exercise 1. (14pt 2-3-3-3-3) Consider the simple system depicted in the figure. It represents a chemical plant that has stream 3 as the main product. In component A, a chemical reactor, a flow of reactant is introduced (stream 2 ) in order to have complete depletion of stream 1. The excess of reactants of stream 2 constitutes the stream 4, so streams 2 and 4 have the same chemical composition. Thanks to a separator, component B, stream 4 is separated into two streams, 5 and 6, having different properties. The stream 6 is reused for other chemical processes , while stream 5 is disposed into the environment with zero additional costs. With reference to the numerical data provided in the tables It is requested to: a. Write the exergy balance and calculate the exergy destruction s for each component, then compute the rational and functional exergy efficiencies. Comment on the obtained values. b. Considering the highest level of disaggregation of the plant, set the proper auxiliary equations. Write the thermoeconomic system of equations and derive analytically the cost structure of products for each component. c. For each component, calculate numerically each term of t he cost structure of their products , the specific and total costs of the products , the relative cost difference and the exergoeconomic factor . Comment on the obtained results and define possible interventio ns you would apply according to the Design Evaluation procedure. d. Compute the minimum cost for waste treatment (stream5) related to component B for which the cost of product 6 would be equal to the cost of product 3 . Redefine and update the…