Example: A light oil with 20°C inlet temperature flows at a rate of 500 kg / min through 5 cm ID pipe which is enclosed by a jacket containing condensing steam at 150°C. If the pipe is 10 cm long, find the outlet temperature of the oil. Take the following oil properties of oil at 85°C: v = 3.6 × 10-6 m²/sec k = 0.12 W/m. K p = 880 kg/m³ Cp 2100 J/kg. K =

Example: A light oil with 20°C inlet temperature flows at a rate of 500 kg / min through 5 cm ID pipe which is enclosed by a jacket containing condensing steam at 150°C. If the pipe is 10 cm long, find the outlet temperature of the oil. Take the following oil properties of oil at 85°C: v = 3.6 × 10-6 m²/sec k = 0.12 W/m. K p = 880 kg/m³ Cp 2100 J/kg. K =

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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Air at p = 1 atm enters a thin-walled (D = 5-mm diameter) long tube (L = 2 m) at an inlet temperature of Tm,i = 100°C. A constant heat flux is applied to the air from the tube surface. The air mass flow rate is m = 125 × 10-6 kg/s. If the tube surface temperature at the exit is T, = 160°C, determine the heat rate entering the tube, in W. Evaluate properties at T = 400 K. q= Mi W
3 Water at 15°C (p = 999.1 kg/m , cp = 4.18 kJ/kg.K and u = 1.138E-3 kg/m.s k = 0.631 W/m.°C) is flowing steadily in a 4.3-cm-diameter, 9.9- m-length horizontal pipe made of stainless steel, the outer surface is subjected, to a uniform heat flux of 6.2 kW/m". Assume fully developed %3D %3D %3D flow. What is the surface temperature when the exit temperature is 55 (°C)? Select one: А. 150.32 B. 131.90 C. 140.63 D. 110.59 O E. 121.25
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A fully developed flow of air at 27°C flows at 3m/s in a pipe of internal diameter 1cm. A heater surrounds last 20cm of pipe and supplies constant heat to bring the air out at 40°C. The power input needed is
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In a gas manufacturing plants, they presented a horizontal tube in which a gas assumed to be ideal is flowing steadily. It was identified that no heat and work interaction was done. Also, there is a significant changes in the pipe diameter as well as velocity. If in case we select N2 as the flowing gas at 761.67 R at a velocity of 5.6 m/h, Calculate the temperature where the velocity us 180 km/h? Assume cp=7/2 R.
Air at p = 1 atm enters a thin-walled (D = 5-mm diameter) long tube (L = 2 m) at an inlet temperature of Tmi = 100°C. A constant heat flux is applied to the air from the tube surface. The air mass flow rate is m = 135 × 106 kg/s. If the tube surface temperature at the exit is T5,0 = 160°C, determine the heat rate entering the tube, in W. Evaluate properties at T = 400 K. 9 = i W
B9
Tout=? V (m/s) D=0.1m air Air at (3.10x10^2) K is entering in a circular pipe at 101325 Pa as shown in Figure. The velocity of the air at the pipe entrance is (1.0000x10^O) m/s. The diameter of the pipe is 0.1m. Specific gas constant of air is 287 J/kg-K. Specific heat of air is 1000 J/kg-K. Find the outlet temperature if 2000 J of heat is added to the pipe. Answer should be in 'K' with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible.
Water flows through a tube of diameter 30 mm at an average velocity of 1.5 m/s. The properties of water are p = 1000 kg/m³, µ = 7.25 × 10-4 N s/m², k=0.625 W/m K, Pr=5.18. Using Nu=0.023 Re0.$Pr04, the convective heat transfer coefficient (in W/m? K) is .
Fluid is flowing through a 20 mm inside diameter and 25 mm outside diameter brass tube at no leaking with temperature at 65℃ and length of 10 m. Surface conduction of hot fluid is 5.2W/(m^2℃) and thermal conductivity of brass is 12.84W/(m℃). Brass tube is covered by silica of 6 mm thickness with thermal conductivity of 13.84W/(m℃) . Outside of it, is a fluid with 45℃ with surface conductance of 3.2W/(m^2℃). Find the heat transfer from the hot fluid with temperature of 65℃ to fluid with temperature of 45℃.
Please help. I am not sure how to approach this problem. This problem involves heat transfer and internal flow within a pipe. Thank you.