h = 1,02.959 500 = 978 690 kcal/hour ster = 1,02 ? 115 ? 10 3 = 1137 ? 10 3 W.of steam on sterilization
В
В
де I st - enthalpy of heating steam; st = 657,3 kcal/kg (2758 KJ/kg); c - enthalpy of condensate at 130 В° С; at 130 В° С c = 130,5 kcal/kg (547,2 KJ/kg). discharge of steam on sterilization
В
v-specific volume of saturated water steam at
р = 4 kg/cm 2
? = 0,3818 m 3 /kg. of steam outflow from orifices in heating column
В
? - velocity coefficient, ? = 0.9; ' - enthalpy of steam at inlet to orifice; '= 657,3 kcal/kg (2755 KJ/kg); "- enthalpy of steam at outlet from orifice and mixing with heated mediumр = 1,755 kg/cm 2 (t sat = 130 В° С ), "= 650,6 kcal/kg (2720 KJ/kg). square of orifices in medium heater necessary for inlet of heating steam
В
of orifices with diameter 2 mm for inlet of steam into medium
В
of one orifice with diameter 2 mm
the inner cylinder of heater with diameter 12 mm consider six rows of orifices - 294/6 = 49 orifices per row.of medium flow in heater
В
section for passage of medium through heater
В
din - inner diameter of sleeve for passage of mass; in = 104 mm.of medium stay in heating head
В
where l - length of heating cylinder = 0.4 m.
Results of calculations of heater with given parameters: of heat necessary for heating of mass 959500 kcal/hdischarge of steam on sterilization 710 m3/hof steam outflow from orifices in heating column 213.5 m/secof orifices with diameter 2 mm for inlet of steam into medium 294of medium stay in heating head 1.36 sec.
CONCLUSIONS
. Enzyme glucoamylase is commercially valuable biological product t...
