A double-pipe parallel-flow heat exchanger consists of 36 stainless steel tubes. Each tube is 5 m long and the inner and outer diameters of tube are D 1 cm and D, = 1.4 cm. Water (C, = 4179 J/kg. C, k = 0.604 W/m. °C, p = 997.4 kg/m3, µ = 9.8 x 10- m?/s, Pr = 6.78) (k = 14.2 W/m. °C). The water is heated by ethylene glycol (C, = 2606 J/kg.°C, v = 3.865 x 10-6 m²/s, k = 0.261 W/m. °C, p = 1082.61 kg/m³) at 70 °C with 0.3 kg/s mass flow rate Assume a fouling factor RA = 0.0005 m². °c/W on the %3D at 20 °C and 1.5 kg/s flows through tube %3D %3! inner surface of the tube. Determine a) rate of heat transfer b) outlet temperature of water and glycol.

A double-pipe parallel-flow heat exchanger consists of 36 stainless steel tubes. Each tube is 5 m long and the inner and outer diameters of tube are D 1 cm and D, = 1.4 cm. Water (C, = 4179 J/kg. C, k = 0.604 W/m. °C, p = 997.4 kg/m3, µ = 9.8 x 10- m?/s, Pr = 6.78) (k = 14.2 W/m. °C). The water is heated by ethylene glycol (C, = 2606 J/kg.°C, v = 3.865 x 10-6 m²/s, k = 0.261 W/m. °C, p = 1082.61 kg/m³) at 70 °C with 0.3 kg/s mass flow rate Assume a fouling factor RA = 0.0005 m². °c/W on the %3D at 20 °C and 1.5 kg/s flows through tube %3D %3! inner surface of the tube. Determine a) rate of heat transfer b) outlet temperature of water and glycol.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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