Figure 4 Testing ambient conditions of the HSDVC
The HSDVC in Figure 3 is investigated in three modes specified as
follows. Mode 1 is the supply of air being given at 27.5°C and 60%
Relative Humidity to the cabin. Mode 2 is the supply of air being given
at 22.5°C and 75% Relative Humidity to the cabin. Mode 3 is the supply
of air being given at 22°C and 50% Relative Humidity to the cabin by
using two desiccant wheels for dehumidification. The cooling capacity of
the HSDVC is given by the equation 2 as follows
\({\text{Cooling}\ \text{capacity}}_{\text{HSDVCS}}=\dot{m_{a}}\ \times\ \left(h_{\text{amb}-3}-h_{\text{supply}-4}\right)\ \)(2)
Performance studies of the HSDVC system
The simulation of the solid desiccant system in mode 1 and the air being
cooled by the vapor compression air conditioning system is described in
Figure 5. The hot humid air at point 1 is dehumidified by the desiccant
wheel and it comes out as hot-dry air at point 2. Then the air is
pre-cooled by the Non-woven Fabric type indirect cooling heat exchanger
till point 3. The solid desiccant cooling system effectively works till
point 3.