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In: Mechanical Engineering

In the two-tube heat exchanger with the same axis used as engine oil cooler, cold water...

In the two-tube heat exchanger with the same axis used as engine oil cooler, cold water enters the steel pipe with inner/outer diameter of 25/30 mm (K= 55 W/mK) entering with at 15°C temperature, 0.5 m/s speed and comes out at 25°C temperature. Hot oil enters the steel pipe with inner/outer diameter of 40/46 mm with a speed of 0.25 m/s at 60°C temperature. According to the oil is required to be cooled at 5°C;

A) Find the pipe length for parallel flow?

B) Find the pipe length for reverse flow. Examine the results.

C) Calculate the pressure loss of the oil and the required pump power in reverse flow.

Solutions

Expert Solution

samet mamat answered 7 months ago
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