Q5. Describe EACH of the following heat exchanger types, stating a suitable application for EACH type:
(a) parallel flow; (3)
(b) contra flow; (3)
(c) mixed flow. (4)
Q5. With reference to multi-tubular heat exchangers, explain how EACH of the following contribute to satisfactory performance:
(a) tube wall thickness;(2) (b) dense population of tubes in the tube plate;(2)
(c) tube materials selection;(2) (d) coolant flow rates;(2)
(e) unimpeded passage of coolant at entry and exit from the tubes. (2)
Q5 . With reference to the design, construction and materials used in the manufacture of plate type heat exchangers, explain why, in most cases, they are superior to tubular type heat exchangers. (10)
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