How It Works: Coolerado Hybrid H80 - Fresh Air Example
Dedicated Outdoor Air System (DOAS)
1 Fresh air is drawn into the air conditioner through an outside air damper. For example, outside
summer air may be at 110°F (43°C).
2 The air is then filtered before it enters Coolerado’s patented heat and mass exchange process.
3 The air that enters the heat and mass exchangers, or HMXs, is cooled without adding or removing
humidity.
4 The example air will be cooled more than 35°F (20°C) with no change in humidity, and will leave the
HMXs at 72°F (22°C).
5 The air then enters the cold refrigerant coils, where additional cooling and dehumidification can occur
if needed.
6 The example air is cooled to 55°F (13°C). A high efficiency fan moves the conditioned air through the
process and into the building where it is distributed via the building duct system.
7 The vast majority of cooling is performed by the HMXs by using about half of the entering air as working air.
Water is evaporated into the working air, which pulls heat away from heat exchangers that in turn pull heat
away from the conditioned air. At 79°F (26°C) the working air example is over 30°F (17°C) cooler than the
110°F (43°C) ambient air. The saturated and cool working air is used to remove heat from the hot
refrigerant condenser coils more efficiently.
8 The working air leaves the hot coils at 97°F (36°C) and then goes on to cool the 2-stage refrigerant
compressor and working air fan, saving more power.
45°F
.0
13
12
(0.
10
60°F
2)
81
(
.5
0.7
81
)
65°F
20°C
70°F
15
25°C
DRY BULB
80°F
90°F
95°F
20
30°C TEMPERATURE 35°C
85°F
ENTHALPY - BTU PER POUND OF DRY AIR
75°F
LU
15°C
3)
55°F
)
10°C
50°F
100°F
6)
5°C
3 /kg
10% RELATI
(M
40°F
84
(0.
VE HUMIDITY
R
IR
YA
20%
°C)
PE
RA
TU
RE
40°C
105°F
1
110°F
FRESH AIR
TEM
2 .2
WE
TB
ULB
90
35°F
)
HMX COOLED AIR
.D
30%
4
Summer
Comfort
Zone
°C)
6.7
F (2
80°
8
°C)
9.4
F (2
85°
90 °
F (3
60
45°C
25
115°F
(13
9.6
)
)
0°C
)
.7°C
F (1
.4°C
40 °
F (4
40%
°C)
2.8
Winter
Comfort
Zone
.5
.2°C
)
F (7
45°
6
F (1
55°
%
60 AIR
50SUPPLY
°F (
10°
C) 50%
°C)
5.6
F (1
60°
13
LB
35°
(4.4) 40
(7.2) 45
%
70
%
80
%
90
°C)
8.3
F (1
65°
°C)
IR
A
3.9
F (2
75°
G
IN
K
R
O
W
°C)
1.1
F (2
70°
X
M
H
)
7.9
(12
DX WORKING AIR
R
PE
(1.7) 35
.9)
(12.8) 55
(15.6) 60
(18.3) 65
(21.1) 70
(23.9) 75
7
(26.7) 80
55
.
.FT
CU
(34
(10) 50
2)
(58
.
.8)
(69
(81
.4)
.0)
(93
)
4.7
(10
(29.4) 85
)
6.3
(11
VO
ME
15
.5)
(46
25
30
35
40
45
50
5)
87
(0.
20
Barometric Pressure: 29.921 Inches of Mercury (101.04 kPa)
a
th
ro
0°
F
Psychrometric Chart - US and SI Units
Sea level
How It Works: Coolerado Hybrid H80 - Fresh Air Example
Dedicated Outdoor Air System (DOAS)
.0
en
14
SI
R
PE
F
ze
lp
y
is
co
nv
e
r
te
d
di EN
re T
c
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fro LP
m Y
U -B
S T
en U
th PE
a
lp R P
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w U
h
i
ch ND
fo OF
llo
S
D
w
A
s RY
TU
th A
R
e I
A
R
p
T
ra (k
IO
ct J
N
ic /k
T
e g
of )
se
tti
EM
)°
ng
py
al
th
en
E
R
(0.
AT
U
1
4.5
C
38
-(
°
0.9
at
(
.0
15
48.9°C
120°F
.002
.004
.006
.008
.010
.012
.014
.016
.018
.020
.022
.024
.026
.028
10
0
25
20
30
35
40
45
50
55
60
65
70
75
80
85
30
35
40
45
50
55
60
ENTHALPY - BTU PER POUND OF DRY AIR
DEW POINT TEMPERATURE - °F
HUMIDITY RATIO - POUNDS MOISTURE PER POUND DRY AIR (GRAMS PER GRAM - SAME)
How It Works: Coolerado Hybrid H80 - Mixed Air Example
1 If 100 percent fresh air is not needed, automatic dampers are used to mix return air from the building
with outside air.
2 This mixed air will enter the filter at approximately 93°F (34°C). The air is then filtered before it enters
Coolerado’s patented heat and mass exchange process.
3 The air that enters the heat and mass exchangers, or HMXs, is cooled without adding or removing
humidity. The mixed air goes through the air conditioner at cooler temperatures.
4 The example air will be cooled with no change in humidity, and will leave the HMXs at 66°F (26°C).
5 The air then enters the cold refrigerant coils, where additional cooling and dehumidification can occur
if needed. In this example, only the first stage of the refrigerant system is needed; so the air conditioner
requires less power and operates more efficiently.
6 The example air is cooled to 55°F (13°C). A high efficiency fan moves the conditioned air through the
process and into the building where it is distributed via the building duct system.
7 The vast majority of cooling is performed by the HMXs by using about half of the entering air as working air.
Water is evaporated into the working air, which pulls heat away from heat exchangers that in turn pull heat
away from the conditioned air. At 72°F (22°C) the working air example is over 35°F (20°C) cooler than the
110°F (43°C) ambient air. The saturated and cool working air is used to remove heat from the hot
refrigerant condenser coils more efficiently.
8 The working air leaves the hot coils at 86°F (30°C) and then goes on to cool the 2-stage refrigerant
compressor and working air fan, saving more power.
45°F
12
10
(0.
2)
81
(
.5
55°F
0.7
81
)
60°F
15°C
65°F
20°C
70°F
15
25°C
DRY BULB
80°F
90°F
95°F
20
100°F
°C)
PE
RA
TU
RE
40°C
105°F
1A
110°F
FRESH AIR
TEM
2 .2
WE
TB
ULB
MIXED AIR
30°C TEMPERATURE 35°C
85°F
ENTHALPY - BTU PER POUND OF DRY AIR
75°F
)
10°C
50°F
3)
10% RELATI
2
3 /kg
5°C
84
(0.
VE HUMIDITY
AIR
(M
40°F
.0
13
20%
MIXED
R
IR
YA
35°F
)
N AIR
°C)
9.4
F (2
85°
90 °
F (3
60
45°C
25
115°F
(13
9.6
)
)
0°C
)
.7°C
F (1
30%
1
.D
35°
.4°C
.5
LB
40%
13
40 °
F (4
.2°C
)
F (7
45°
4
°C)
2.8
R
PE
(1.7) 35
(4.4) 40
6
F (1
55°
LU
%
60 AIR
50SUPPLY
°F (
10°
C) 50%
Summer
Comfort
Zone
B RETUR
Winter
Comfort
Zone
HMX COOLED AIR
°C)
5.6
F (1
60°
)
9°C
23.
°C)
6.7
F (2
80°
.
.FT
CU
(7.2) 45
%
70
%
80
%
90
°C)
8.3
IN
70G°
F (2
A 1.1°
IR C)
K
R
O
W
F (1
65°
X
M
H
8
DX WORKING AIR
75°
F(
VO
ME
.9)
(12.8) 55
(15.6) 60
(18.3) 65
(21.1) 70
7
(23.9) 75
(26.7) 80
)
7.9
(12
6)
(34
(10) 50
2)
(58
.
.8)
(69
(81
.4)
.0)
(93
)
4.7
(10
(29.4) 85
)
6.3
(11
55
90
15
.5)
(46
25
30
35
40
45
50
5)
87
(0.
20
Barometric Pressure: 29.921 Inches of Mercury (101.04 kPa)
a
th
ro
0°
F
Psychrometric Chart - US and SI Units
Sea level
How It Works: Coolerado Hybrid H80 - Mixed Air Example
.0
en
14
SI
R
PE
F
ze
lp
y
is
co
nv
e
r
te
d
di EN
re T
c
tly HA
fro LP
m Y
U -B
S T
en U
th PE
a
lp R P
y, O
w U
h
i
ch ND
fo OF
llo
S
D
w
A
s RY
TU
th A
R
e I
A
R
p
T
ra (k
IO
ct J
N
ic /k
T
e g
of )
se
tti
EM
)°
ng
py
al
th
en
E
R
(0.
AT
U
1
4.5
C
38
-(
°
0.9
at
(
.0
15
48.9°C
120°F
.002
.004
.006
.008
.010
.012
.014
.016
.018
.020
.022
.024
.026
.028
10
0
25
20
30
35
40
45
50
55
60
65
70
75
80
85
30
35
40
45
50
55
60
ENTHALPY - BTU PER POUND OF DRY AIR
DEW POINT TEMPERATURE - °F
HUMIDITY RATIO - POUNDS MOISTURE PER POUND DRY AIR (GRAMS PER GRAM - SAME)