Mech 371 heat transfer.Can you solve this problem as fast as possible Uluulg (P) XMechanicalA counter-flow double bipe heat exchanger shown in the figure below is to heatwater from 20 C to 100 C at the rate of 1.2kg/s. The heating is to be accomplishedby geothermal water available at 160Cat a mass flow rate of 2kg/s. the inner tubeis thin-walled and has a diatmeter of 1.5 cm. If the overall heat transfer coefficient ofthe heat exchanger Is 640WVmta. The specific heat capacities of the water andgeothermal are 4.18 KJ/Kg.10land 4.13 K/Kg. C respectively Detemine the lengthof the heat exchanger required o achieve the desired heating.HotseothermalColdwater20°C100 C1.2 kg/sD=15 cmSelect onea. 17.627 mb. 17627 mC 176.27 md 1.7627 m yluilg (T) Xb Mechanical Engineering Ouestio x+A counter-flow double pipe heat exchanget shown in the figure below is to heatwater from 20°d to 100 C at the rate of 12kg/s The heating is to be accomplishedby geothermal water availablle at 160 Cat a mass flow rate of 2kg/s. the inner tubeis thin-walled and has a diameteriof 15 crm if the overall heat transfer coefficient ofthe heat exchangel is 640W/ 0 The specific heat capacities of the water andgeothermal ate 4.18 KJ/Kg C and 413 KJ/Kg C respectively. Determine heattransfer in the hot waterHotgeothermalwarer160 CColdwater20°C1.2 kg/s!100 CSelect one:a. 40128KWb. 40.128KWc. 401.28KWd. 4.0128KW

Answered: Image /qna-images/answer/873edf6a-45fe-477d-b5d4-aa9b5523221b.jpg

A counter-flow double bipe neat exchanger shown in the figure below is to heat water from 20 C to 100 C at the rate of 1.2kg/s. The heating is to be accomplished by geothermal water available at 160C at a mass flow rate of 2kg/s. the inner tube is thin-walled and has a dialmeter of 1.5 cm. If the overal heat transfer coefficient of the heat exchanger is 640WVm10 The specific heat capacities of the water and geothermal are 4.18 KJ/Kg.ndland 4.13 KJ/Kg. C respectively. Detemine the length of the heat exchanger.required o achieve the desired heating

A counter-flow double bipe neat exchanger shown in the figure below is to heat water from 20 C to 100 C at the rate of 1.2kg/s. The heating is to be accomplished by geothermal water available at 160C at a mass flow rate of 2kg/s. the inner tube is thin-walled and has a dialmeter of 1.5 cm. If the overal heat transfer coefficient of the heat exchanger is 640WVm10 The specific heat capacities of the water and geothermal are 4.18 KJ/Kg.ndland 4.13 KJ/Kg. C respectively. Detemine the length of the heat exchanger.required o achieve the desired heating

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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REFERENCE: FROM BOOK - ENGINEERING THERMOFLUIDS, M. MASSOUD
1. A motor coil can be modeled as a hollow copper cylinder with an outer diameter of 0 50 mm, an inner diameter of 40 mm, and a length of 60 mm. The motor stalls at time t = 0 and, at this point, the copper experiences a step input in electrical heating of Po u(t), where Po is 350 W. Assume that there is little time for significant heat loss to the environment so that the copper cylinder can be considered to be insulated. If the initial temperature is 30 °C, find the temperature as a function of time, T(t), analytically using Laplace transforms. Calculate the time required to reach the breakdown temperature of the wire insulation, which is approximately 250 °C. Write a script file in MATLAB® to: (a) determine the time for the copper to reach 250 °C using the command find; and (b) plot T(t) over this time interval. Copper has a density of 8960 kg/m³ and a specific heat of 390 J/kg-°C. 25 mm 20 mm P(t) = Pou(t)