Mass flow rate of hot fluid is 0.007 kg/s. Convection heat transfer coefficient of hot fluid stream is 1000 W/m?.°C. Thermophysical properties are given as follows. Hot fluid; c, = 5000 J/kg.°C Water; dynamic viscosity, u = 0.001 Pa.s; Prandti number, Pr = 6.14; thermal conductivity, k = 0.607 W/m.°C; density, p = 1000 kg/m?; specific heat c, = 4200 J/kg.°C. Neglecting conduction resistance of the pipe, calculate heat exchanger effectiveness (ɛ), heat transfer rate (Q in J/s), outlet temperatures of the hot fluid (Th,out) and water (Tw,out) for varying mass flow rate values of water provided below. Mass flow rate of water, m„ (kg/s) 0.0025 0.01 0.025 0.05 0.075 0.1 Plot heat exchanger effectiveness (8), heat transfer rate (Q in Jis), outlet temperatures of the hot fluid (Th,out) and water (Tw,.cut) as a function of water mass flow rate (m„.). Comment on the results. Hot fluid in (65 °C) Water Water in (25 °C) out d = 0.5 cm Hot fluid out L= 5 m

Mass flow rate of hot fluid is 0.007 kg/s. Convection heat transfer coefficient of hot fluid stream is 1000 W/m?.°C. Thermophysical properties are given as follows. Hot fluid; c, = 5000 J/kg.°C Water; dynamic viscosity, u = 0.001 Pa.s; Prandti number, Pr = 6.14; thermal conductivity, k = 0.607 W/m.°C; density, p = 1000 kg/m?; specific heat c, = 4200 J/kg.°C. Neglecting conduction resistance of the pipe, calculate heat exchanger effectiveness (ɛ), heat transfer rate (Q in J/s), outlet temperatures of the hot fluid (Th,out) and water (Tw,out) for varying mass flow rate values of water provided below. Mass flow rate of water, m„ (kg/s) 0.0025 0.01 0.025 0.05 0.075 0.1 Plot heat exchanger effectiveness (8), heat transfer rate (Q in Jis), outlet temperatures of the hot fluid (Th,out) and water (Tw,.cut) as a function of water mass flow rate (m„.). Comment on the results. Hot fluid in (65 °C) Water Water in (25 °C) out d = 0.5 cm Hot fluid out L= 5 m

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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