MW stepchange in (concrete) processing industries Ir. C.B.G. Groffils
Agenda Introduction Applications Heating principle Energy balances Test equipment Summary
Magnetron 1940-1945 Raytheon M.I.T. Caltech labs (Hall) 2.45 GHz
Batch oven 1970 multiple antennas on one oven 10*0.5kW (5kW) Product size 30cm by 50cm By 3m
Microwave vacuum drying 1985-1998 1 m³ 4*6kW (24kW)
Agenda Introduction DYMOGROUP Applications Heating principle Energy balances Test equipment Summary
Agenda Introduction DYMOGROUP Applications Heating principle Energy balances Test equipment Summary
Applications Applications in processing industry Drying - Sheet Drying : Waterbased and alcohol inks on plastics, (on paper, on textile, on wood...) - Bulk drying : Chips, Flakes, Gums, Granules, Slurry,...(Waste, Sand, Brics, Clay, )
ALCA HYBRID DRY 32 1999 microwave filter drying Flakes, gummies, slurries, granulates 100-600kg/h 16*2kW product size 2.5cm by 50cm Full PLC-automation
Introduction Applications of Heating -Deformation -- Forming - Joining - Melting - Glueing
Agenda Introduction DYMOGROUP Applications Heating principle Energy balances Test equipment Summary
Conventional Heating - External source - Limited energy transfer (Tmaterial, A source) - Efficiency 20-40% - Loss (Amaterial) DT
Microwave Heating + The material is the source + Energy transfer (Tmaterial, V volume) + Efficiency 80-100% + Loss (Amaterial) DT
Interaction: microscopic E (x,y,z,w) w = 2 p f f =2.45 GHz Interactie microgolf - polaire natuur van een watermolecule
Agenda Introduction DYMOGROUP Applications Heating principle Energy balances Test equipment Summary
Energy Balance estimate Verbruik 2,5T/h SiO2 5% humidity 0,055 /kwh CO2 emission 0 Schouw Luchtfilter waarde eenheid Elektriciteit 150 kw CO 2 (N.G.) 554 ton/jaar Gas m³/u Water m³/u oppervlakte 43,2 m² Kost waarde eenheid Elektriciteit 39.600 /jaar CO 2 (N.G.) 6.320 /jaar Gas /jaar Water /jaar oppervlakte 1.970 /jaar Totaal (N.G.) /jaar Totaal (G.) 41.570 /jaar Ketelhuis productiehal
Agenda Introduction DYMOGROUP Applications Heating principle Energy balances Test equipment Summary
AlcaDry 4 70 SPEED 10% 4,0 60 50 3,5 3,0 Temp ( C) 40 30 2,5 2,0 1,5 Moisture Loss (%) 20 1,0 10 0,5 0 1 2 3 4 5 6 7 8 9 10 0,0
ALCA BOX 24 Drying/Heating +/- 1m³ 4*6kW (24kW) Up to 300 C PLC-autonomy
ALCA HEAT 32 Drying/Heating B 0,5m, L 4m 16*2kW (32kW) Up to 300 C PLC-autonomy
Agenda Introduction DYMOGROUP Applications Heating principle Energy balances Test equipment Summary
Summary Applications widespread in industry Microwave technology is mature Huge evolution in possibilities of industrial applications Industrial test equipment available within Dymogroup