1- Draw your continuous adiabatic dryer and label it with all the conditions of: wet solid...
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1- Draw your continuous adiabatic dryer and label it with all the conditions of: wet solid feed in, your dry gas in, your solid product out, and your gas out. (not if it is counter or co-current flow). 2- From NTU equation, obtain your go NTU = In 3- Convert mass of solid ms from lb/min to lb/hr 4- Calculate rate of moisture evaporated my m₁ = m₂ (Xws - Xds) = mg (Hgo - Hgi) (Ta) gás in−(Tw) gas in (Td) gas'out-(Tw) gas' out 5- Calculate rate of enthalpy exchange between gas and solid (Q) Q=ms {(Cp)s (Tds - Tws) + Xws (Cp)H2O(liquid) (Tv - Tws) + Xds (Cp)H2O(liquid) (Tds - Tv) + (Xws - Xas) [AH aw+ (Cp)H20(gas) (Tgo - Tv )]} Where Tv is temp of vapor at gas entry conditions from psychrometric chart 6- Determine mass of gas (mg) from Q = mg {[(Cp)ar +H(Cp)H20(vapor) ] (Tgi -Tgo) } M 7- Determine mass of gas at the exit mg (exit) 8- Determine the molecular weight of the gas at the exit 29 9- Determine the density of gas at the exit from the ideal gas law (ext) = PM Ro 10- Determine the diameter of your dryer D 12- Calculate (₂) (P₂) exit molest) 18- mg + mg Higi + m, 11- Determine allowable gas velocity Ua from the table (slide 30) in ft/hr G = Gexit = 4(majest -TD² G = U₂ P or 13- Calculate ha 14- Calculate logarithmic mean temperature. ATLM = ha=kG0.67/D (Ta) in - (Ta) out (Tg)in-Tv₂ In[(Tout Tv - 15- Calculate the volume of your dryer (V) from Q=h₂VATLM 16- Calculate the length of the dryer (L) TD²L 4 V = 1- Draw your continuous adiabatic dryer and label it with all the conditions of: wet solid feed in, your dry gas in, your solid product out, and your gas out. (not if it is counter or co-current flow). 2- From NTU equation, obtain your go NTU = In 3- Convert mass of solid ms from lb/min to lb/hr 4- Calculate rate of moisture evaporated my m₁ = m₂ (Xws - Xds) = mg (Hgo - Hgi) (Ta) gás in−(Tw) gas in (Td) gas'out-(Tw) gas' out 5- Calculate rate of enthalpy exchange between gas and solid (Q) Q=ms {(Cp)s (Tds - Tws) + Xws (Cp)H2O(liquid) (Tv - Tws) + Xds (Cp)H2O(liquid) (Tds - Tv) + (Xws - Xas) [AH aw+ (Cp)H20(gas) (Tgo - Tv )]} Where Tv is temp of vapor at gas entry conditions from psychrometric chart 6- Determine mass of gas (mg) from Q = mg {[(Cp)ar +H(Cp)H20(vapor) ] (Tgi -Tgo) } M 7- Determine mass of gas at the exit mg (exit) 8- Determine the molecular weight of the gas at the exit 29 9- Determine the density of gas at the exit from the ideal gas law (ext) = PM Ro 10- Determine the diameter of your dryer D 12- Calculate (₂) (P₂) exit molest) 18- mg + mg Higi + m, 11- Determine allowable gas velocity Ua from the table (slide 30) in ft/hr G = Gexit = 4(majest -TD² G = U₂ P or 13- Calculate ha 14- Calculate logarithmic mean temperature. ATLM = ha=kG0.67/D (Ta) in - (Ta) out (Tg)in-Tv₂ In[(Tout Tv - 15- Calculate the volume of your dryer (V) from Q=h₂VATLM 16- Calculate the length of the dryer (L) TD²L 4 V =
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Related Book For
Elementary Principles of Chemical Processes
ISBN: 978-1119498759
4th edition
Authors: Richard M. Felder, ? Ronald W. Rousseau, ? Lisa G. Bullard
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