A filter cake of Calcium Carbonate contained in a tray is to be dried by cross-circulation from thetop surface. Each tray is 2.5 cm high with an area of 1.5 m² and is completely filled with 73 kg ofwet filter cake having a water content of 30% on dry basis, The heating medium is air at 1 atm and170°F with a humidity of 0.026 (kg H,O/kg dry air). The average velocity of the air passing acrossthe wet solid is 4 m/sec. Estimate the time in hours to reach the experimentally determined criticalmoisture content of 10% on the dry basis, if the preheat period is neglected.Assume latent heat of evaporation of water 2500 kJ/kg.

It is cross-circulation drying of a granular material. It is assumed in this case that the transfer…

Answered: A filter cake of Calcium Carbonate…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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A composite wall is formed of a 2.5-cm copper plate, a 3.2-mm layer of asbestos, and a 5-cm layer of fiberglass. The wall is subjected to an overall temperature difference of 560°C. Calculate the heat flow per unit area through the composite structure. 11 T DI
2. The wall of a furnace is made up of a material which has thermal conductivity of 1.65 W/m•C and a thicknesses 250 mm. The inner side of the furnace wall is exposed to hot gases at 1000 °C with a convection coefficient of 25 W/m2°C and the inside the surface is at 800 °C. The air outside the furnace is at 25°C with a convection coefficient of 12 W/m2°C. a. Draw a clear diagram representing the system b. Determine the temperature of the outside surface of the furnace C. The rate of heat loss from the furnace.
) The inside surface of an insulation layer is maintained at 350oC and the outside surface dissipates heat by convection and radiation to air and wall, respectively. The temperatures of air and wall are 15 oC. The insulation layer has a thickness of 10 cm and a thermal conductivity of 15 W/m.K. What is the value of the heat transfer coefficient at the outside surface of the layer, if the temperature at the outside surface should not exceed 225 oC? (The emissivity and the width of the surface are 0.3 and 1 m., respectively. =5.67x10-8 W/m2K 4 ).
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Example • The cylinder is made from aluminum with diameter and thickness of 5 cm and 1 cm respectively. The wall temperature in the inside of cylinder is 50°C, while the temperature of the air is 30°C. the coefficient of convection in the air is 10 W/m2-C. Calculate the heat loss from the cylinder per unit length! • Calculate the thickness of the insulation so heat loss from cylinder will decrease 50% of initial condition. Thermal conductivity of the isolator (k) : 0.5 W/m°C state.pptx 7 MB VIEW Tampilkan semua
a piece of beef steak 10 cm thick will be frozen in the freezer room -25 degrees Celsius This product has a moisture content of 73% density 970 kg / m³ and a thermal conductivity of 1.1 W / (m K) frozen using the plank equation. This product has an initial freezing temperature of -1.75 degrees Celsius and the movement of air in the raw chamber gives a convection heat transfer coefficient of 10 W / (m² K). tf =
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