Symbol	Description	Units
L	Channel length	m
W	Channel width	m
H	Channel height	m
Ncoils	Number of coils	-
Lcs	Horizontal coil spacing	m
hcs	Vertical coil spacing	m
RHin	Inlet relative humidity	%
T in	Inlet temperature	°C
T coil	Coil temperature	°C
A membrane	Membrane area	m2
D	Coil diameter	m
K	Membrane permeance	GPU
$\overrightarrow{\mathit{v}}$ in	Inlet velocity	m/s
${\dot{\mathit{m}}}_{\mathbf{m}\mathbf{e}\mathbf{m}\mathbf{b}\mathbf{r}\mathbf{a}\mathbf{n}\mathbf{e}}$	Membrane mass flow rate	kg/s
Re	Reynolds number	-
∇	Gradient operator	-
$\mathit{\rho }$ i	Density of ith species	kg/m3
$\overrightarrow{\mathit{v}}$	Velocity vector	m/s
$S_{m,i}$	Mass source due to phase change for each species i	Kg
∇p	Pressure gradient	Pa
$\stackrel{═}{\mathit{\tau }}$	Viscous losses in fluid	-
${\mathit{c}}_{\mathit{P}}$	Specific heat at constant pressure	J/kg-K
${\dot{\mathit{m}}}_i$	Rate of condensation of ith species	kg/s
${\mathit{h}}_{fg}$	Specific latent heat of condensation	kJ/kg
k	Fluid thermal conductivity	W/m-K
kc	Mass transfer coefficient	m/s
∆T	Temperature gradient	°C
${\mathit{D}}_{{\mathbf{H}}_{\mathbf{2}}\mathbf{O}}$	Water diffusivity in air	m2/s
$Y_i$	Mass fraction of ith species	-
J/Amembrane	Mass flux through membrane	kg/m2
$P_{vf}$	Feed side vapor pressure	Pa
$P_{vp}$	Permeate side vapor pressure	Pa
$A$ coils	Area of cooling coils	m2
$Y_{H_{2}O,\infty }$	Mass fraction of vapor species in bulk	-
$Y_{H_{2}O,w}$	Mass fraction of vapor species near wall of cooling coil	-