Overall design of cellulose-pad cooling system
The CWCT designed in Section 2.1 is used to cool a room with
interior dimension 8 m (length) × 3.5 m (width) × 2.8 m (height)
for the experiment. The room is a zero-energy house with
overall U-value 0.24Wm−2K−1.The whole cellulose-pad cooling
system is shown in Fig. 4.
The cold energy stored at night will be used for cooling
purpose at daytime. An indoor air cooler was installed inside
the cooling room as shown in Fig. 5. The cooler is an air heat
exchanger (fan-coil unit) made from aluminum finned copper
tubes, with overall dimension 39 cm (length) × 35 cm
(width) × 4 cm (depth). Cold water flows inside the tubes to
absorb the heat of the room air. Nine DC fans (12 V/3 W/
24 m3 h−1) were used to circulate the room air through the air
cooler at maximum flowrate 127 m3 h−1 with 27 W total fan