Membrane and Desalination Technologies - TCE Moodle Website

428 K.C. Ng et al.
Average Rate of Heat Input [GW]
Tower Height [m]
20
16
12
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
8
4
Adsorbent backing density = 700 kg/m 3
d = tower diameter
d = 3 m
d = 4 m
d = 5 m
0
0 10 20 30 40 50 60 70 80 90 100
Mass of Silica Gel per Tower [Tonne]
Fig. 9.26. Design dimensions of silo-type tower.
Four-Tower AD Plant
PR= 0.66
SDWP=10 m 3 of water/tonne of silica gel
Coolent temperature = 30°C
Heat source temperature = 85°C
Evaporation temperature = 21°C
0.0
0 40 80 120 160 200 240 280 320 360 400
Total Mass of Silica [Tonne]
Fig. 9.27. Average heat input to the AD plant for assorted mass of silica gel.
Average heat input ðGWÞ ¼ SDWP msilica gel h fgðwaterÞ
PR 3; 600 10 9 : (30Þ