{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Problem 14-1 - Example 14-1 Air enters the inner tube of a...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Example 14-1 Air enters the inner tube of a parallel flow double-pipe heat exchanger at 90°C with a mass flow rate of 0.03 kg/s. Water enters the outer tube through a duct of diameter 3 cm at a velocity of 8 m/s and a temperature of 10°C. The inside diameter of the inner tube is 4 cm and the overall heat transfer coefficient based on this diameter is 170 W/m 2 K. The length of the heat exchanger is 0.6 m. Find the outlet fluid temperatures. Solution: First find the heat capacity rates. For the cold (water) side C m A ρ = ± V ( ) 2 2 3 kg m 1 m 999 8 1.5 cm m s 100 cm C m π ⎞⎛ = ⎟⎜ ⎠⎝ ± kg 5.65 C m s = ±
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon