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Politecnico di Milano Department of Energy - School of Industrial Engineering Course Energy Systems prof. S. Consonni Academic Year 2017/18 Written Exam 24 June 2019 Theoretical Questions - Time: 1.00 h PLEASE NOTICE 1) Books, lecture notes, cell phones are strictly forbidden. Using them or talking with colleagues and/or copying will lead to the immediate invalidation of the exam. 2) Answer clearly ONLY to the questions. Even if correct, additional considerations will NOT contribute to the final grade – and you have NOT enough time! 3) Fill this sheet with your name and return it with your answers. 4) MARK EACH SHEET OF YOUR ANSWERS with YOUR NAME AND PAGE/SHEET NUMBER. 5) WRITING AND SHEET/PAGE SEQUENCE MUST BE LEFT TO RIGHT AS USED IN WESTERN COUNTRIES. 6) The final grade is the sum of the points assigned to the answer of each question plus a bonus of max 3 points. The bonus will be given based on completeness, clarity and details of the explanations. 7) Wherever possible, support your statements with clear drawings and/or graphical representation 8) ORGANIZE YOUR ANSWERS CLEARLY: ANSWER TO 1.a; ANSWER TO 1.b, ETC. FIRST NAME…………………………………….......……FAMILY NAME………………………………………………….. Question 1 (18 points) A large scale coal-fired steam plant is located along a river that can provide large amounts of cooling water. a. Describe and represent the arrangement of the condenser and of the heat rejection system in case of open loop cooling with water taken from the river. b. For a selected steam cycle condensation temperature, discuss the choice of the cooling water flow rate, explaining whether there is: - a minimum value that can be adopted; if yes, explain how such minimum value can be determined; - a maximum value that can be adopted; if yes, explain how such maximum value…