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Q5. (a) Describe, with the aid of a sketch, the water/steam circulation system for the waste heat recovery system. (5)

(b) Explain how economizer circulation pumps are maintained in a cool condition to allow for prolonged operation without problem. (3)

(c) Describe how a waste heat recovery system steam pressure is maintained and the system operated when the associated diesel engine plant is operating on EACH of the following:

(i) Low engine load; (4)

(ii) Low steam demand. (4)