6.13 Heating glycerol solutionAn adiabatic stirred tank is used to heat 100 kg of a 45% glycerol solution in water. An electrical coil delivers 2.5 kWof power to the tank; 88% of the energy delivered by the coil goes into heating the vessel contents. The glycerolsolution is initially at 15°C.(a) Write a differential equation for the energy balance.(b) Integrate the equation to obtain an expression for temperature as a function of time.(c) Assuming glycerol and water form an ideal solution, how long will the solution take to reach 90°C?

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Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.8P

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