HeatingThere is one reactor of 25kl capacity. This reactor is filled with a fluid 22m3. Specific heat of liquid is 1.2kcal/kg.Assume Agitated ReactorI. First heat from 40 C to 110 C in 30 minutes II. Hold it for 2 hrs at 110 C III. Cool from 110 C to 60 C in 1 hour.Calculate I. Surface area required for heating & Cooling II. Size & pitch of Limpet coil Heating & Cooling fluid is considered to be hot thermic fluid

Vessel SideLimpet Coil SideFlat Blade Turbine AgitatorSr. No.DescriptionUnitQtyRemarksSr. No.DescriptionUnitQtySr. NoDescriptionUnitQtyRemark1Volumem312.51Diameterm0.080.11No.of blades62Operating Volumem3112Pitchm0.070.072Diameter1.303L/D ratio1.23Fluid Density (c)kg/m38008003Speedrpm604Diameterm2.44CpckCal/kg.oC0.6380.6385Heightm2.85Viscosity, ckg/m.s0.000150.000156Operating Heightm2.56Conductivity, Kckcal/h.moC0.06180.06187Shell Thicknessm0.01Assumed7Temp in (Tc1)0C3603608Fluid Density (v)kg/m31100Assumed8Temp out (Tc2)0C1401409CpvkCal/kg.oC0.8Changed9Mass Flow rate, Wckg/hr9655.17241379319655.172413793110Viscosity, vkg/m.s0.00033210Volumetric Flow ratem3/hr6.03448275866.034482758611Conductivity, Kvkcal/h.moC0.15Assumed11No. of rotations8712Temp in (tv1)0C404012Length of limpetm625513Temp out (tv2)0C11011013Hydraulic mean diam0.04887159530.061089494214Time for heating ()min3014Flow aream20.00187587080.002931048115Mass of fluid in tank (Mv)kg1210015Flow velocitym/s0.89358246210.571892775816Heat Required (Q)kCal/hr135520016Reynolds No.232910.935909022186328.74872721817Reynold No.5617624.717Friction factor0.00359608230.003802394118Prandtl No.6.374418Prandtl No.5.57475728165.574757281619Nusselt No.45383.4019Nusselt no.1003.8442004401853.872929614820Heat Transfer Coefficient, hvkcal/m2.h.C2875.4220Heat Transfer coefficient, hckcal/m2.h.C1269.3993549291863.803961267521Heat Transfer Aream218.5921Fouling Resistance0.00060.000622Vessel MOC thermal conductivitykcal/h.moC15.0522Overall heat transfer coefficientkcal/m2.h.C416.6458355905361.0087554757Mv.Cpv968023Pressure Dropkg/cm20.05939619570.0181584346Wc.Cpc616024Total Pressure Dropkg/cm20.06368757420.0197983695ln(Tc1-tv1)/(Tc1-tv2)0.24686025LMTD0C122.511557178122.511557178k-1/k0.77584626Heat Outputkcal/hr485753.312015145464214.616377549k4.46121827Heat Transfer area of limpetm29.516377578510.4960046821UA/(Wc.Cpc)1.495422Consider additional 3 limpet on bottomUA9211.798173Heat Transfer area of limpetm212.938719814114.7739324767A22.109421