Tag: #heatexchanger
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EK General Dec 2023 (Q4)
With reference to plate type heat exchangers: (a) Sketch a cross sectional view showing the plate design pattern and the directions of hot and cold fluid flow (4) (b) State TWO reasons for the plate design patterns (2) (c) State, with reasons, FOUR advantages of a plate cooler compared to shell and tube type. (4)…
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EK General Dec 2021 (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) Heat exchanger Dec 2021 (Q5)
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EK General Oct 2018 (Q4)
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) Heat exchanger Oct 2018 (Q4)
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EK General Jul 2018 (Q6)
With reference to refrigeration systems: (a) Explain why undercooling of the refrigerant at the condenser outlet is desirable; (3) (b) Describe, with the aid of a sketch, how a heat exchanger could be incorporated in the circuit to enhance undercooling (5) (c) Explain the possible consequences of the refrigerant having a dryness fraction at the…
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EK General Jul 2018 (Q3)
With reference to heat exchangers, describe how EACH of the following design aspects promote heat transfer: (a) material selection; (5) (b) flow patterns; (3) (c) extended surface areas. (2) Heat exchanger Jul 2018 (Q3)
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EK General Oct 2017 (Q1)
With reference to plate heat exchanger, explain how EACH of the following design aspects promote heat transfer: (a) Material selection (5) (b) Flow pattern (3) (c) Extended surface area (2) Heat exchanger Oct 2017 (Q1)
