An oil preheater consists of a single tube of D=10 mm diameter and L=25 m length. A surfaceheat flux of q."-exp(-x/25) [W/m²] is applied on the tube. Chemical reactions inside the oil causevolumetric heat generation at the rate of ġ = 1000 [W/m³]. Before entering the tube, the oil hasa uniform temperature of 25 °C and a flow rate of 0.025 kg/s, and its hydrodynamic boundarylayer has been fully developed.(a) Determine the type of flow (laminar or turbulent) inside the tube.(b) Determine the location where the thermal boundary layer is fully developed.(c) Perform the energy analysis of the fluid, and derive the temperature equation (in terms ofdTm and dx) for the oil (Do NOT need to solve it).(d) Calculate the temperature difference between the pipe surface and the oil (Ts-Tm) at theexit of the pipe. "= =KATcan1hAProperties of the oil: p = 865.8 kg/m³, cp=2035 J/kg K, = 8.36×102 Nos/m², k = 0.141W/mK, α = 0.8×10-7 m²/s, and Pr=1206.6.

[Note: This solution is based on the reference from the Heat and Mass Transfer Data Book_6th edition…

Answered: An oil preheater consists of a single…

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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1. Know the three-pronged piping system as shown in the figure, with the following data el 20 m Pipe L (m) D (m) f ΣΚ el 13 m 1 500 750 0.10 0.15 el 5 m [2] 0.025 3 0.020 3 1000 0.13 0.018 7 [3] [1] Determine the flow rate of Qi and the piezometric height of H at the junction. (Assume afactor constant friction)
Detailed explanation required (This is not a graded question)
Consider a piston/cylinder assembly with a cross sectional area of 0.15 m2 that has compressed a spring. The pressure in the cylinder enclosed by the piston is 180 kPa and the floating pressure of the piston (the pressure required to float the piston without a spring) is 110 kPa. Determine the force exerted by the spring in [kN]. Include 3 significant figures in your final answer.
Parts A-C and Label them Question : Water flows downward in a pipe at 45°, as shown in figure below. The pressure drop p1 − p2 is partly due to gravity and partly due to friction. The mercury manometer reads a 6-in height difference. Part [A] - What is the total pressure drop p1 − p2 in lbf/in2? Part [B] - What is the pressure drop due to friction only between 1 and 2 in lbf/in2? Part [C] - What is the pressure drop due to gravity only between 1 and 2 in lbf/in2?
Air at a temperature of 25∘C∘C and standard atmospheric pressure of 101.3 kPakPa flows through the nozzle into the pipe where the absolute internal pressure is 85 kPakPa . The nozzle has a throat diameter of d� = 30 mmmm . Gas constant for air is R� = 286.9 J/[kg⋅K]J/[kg⋅K] and its specific heat ratio is k� = 1.40. (Figure 1) Determine the mass flow into the pipe. Express your answer using three significant figures.
Air at a temperature of 25∘C∘C and standard atmospheric pressure of 101.3 kPakPa flows through the nozzle into the pipe where the absolute internal pressure is 85 kPakPa . The nozzle has a throat diameter of d� = 30 mmmm . Gas constant for air is R� = 286.9 J/[kg⋅K]J/[kg⋅K] and its specific heat ratio is k� = 1.40. (Figure 1)v Determine the mass flow into the pipe. Express your answer using three significant figures.
Engine oil at 40 C [density 876 kg/m^3, viscosity 0.2177 kg/m.s] flows in a 22-cm-diameter pipe at a velocity of 1.1 m/s. The pressure drop (in Pa) of oil for a pipe length of 24 m is ?
At room temperature, the water in the storage tank is pumped up to the top of the absorption tower at a flow rate of 10.8 m3/h. The point at which the upward water is discharged is in the atmosphere at a height of 5 m from the surface of the water storage tank. Calculate the friction loss during transportation [J/kg] when the inner diameter of the transport pipe is 50mm, the efficiency of the pump is 50% and the pump work (Wp) is 150J/kg (=m2/s2). However, it is assumed that the area of the liquid level of the water storage tank is very large compared to the cross-sectional area of the transport pipe outlet.
Engine oil at 40 C [density 876 kg/m^3, viscosity 0.2177 kg/m.s] flows in a 20-cm-diameter pipe at a velocity of 0.9 m/s. The pressure drop (in Pa) of oil for a pipe length of 20 m is
only atempt once
[CE Hydraulics] 5. For the case of turbulent flow in rough pipes, does the friction factor depend on the Reynolds number? Why?

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