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TRICOIL®
COMPARISON
To effectively
provide a comfortable indoor environment, an air conditioning system must
provide cooling as well as dehumidification.
The following example illustrates the effectiveness of the TRICOIL®
system as compared to a traditional system.
Example
An
air conditioning system is required to provide 10,000 CFM of supply air to cool
a room to 76°F and 45 % RH. The room sensible heat factor is 0.80 and the
amount of outside air required is 2000 CFM. Calculations show that 8 °F of
reheat is required to maintain the desired indoor relative humidity and to bring
the supply air to 70% relative humidity as recommended in ASHRAE Standard
62-1989. The traditional system uses electric reheat and the TRICOIL®
system uses the patented TRICOIL recuperative process.
SUMMARY
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TRADITIONAL SYSTEM
WITH
ELECTRIC HEAT
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TRICOIL®
METHOD
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| AIR
VOLUME |
10,000 CFM
|
10,000 CFM
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| PRIMARY
COOLING |
41.1 TONS
|
34.1 TONS
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| MOISTURE
REMOVAL |
117.0 LBS/HR
|
117.0 LBS/HR
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| POWER
REQUIRED: |
|
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| CONDENSING
UNIT |
46.9 KW
|
37.5 KW
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| SUPPLY
AIR FAN |
5.0 KW
|
5.2 KW
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| ELECTRIC
REHEAT |
25.8 KW
|
0 KW
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| TRICOIL
PUMP |
0 KW
|
0.2 KW
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| TOTAL |
77.7 KW
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42.9 KW
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| EFFICIENCY: |
|
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| TOTAL
COOLING (1) |
1.89 KW/TON
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1.25 KW/TON
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| DEHUMIDIFICATION
(2) |
10.54 GR/W
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19.09 GR/W
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RESULTS
The
TRICOIL® method uses only 55% of the power that the traditional system
uses to cool and dehumidify this room.
Notes
(1) The Total Cooling efficiency is based on the total power required to cool
and dehumidify the room including the electric reheat energy.
(2) The dehumidification efficiency is a new method for ranking air conditioning
systems based on their moisture removal capability. The units "GR/W"
are
Grains of Moisture Removed per Total Watts of Power Input. There are 7000
grains of moisture in a pound of water.
PSYCHROMETRIC
CHART
The following chart
indicates the process of a typical TRICOIL® operation such as the
one illustrated
in the above example.
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USA patent
numbers
5,181,552; 5,228,302; 5,337,577
Other USA and foreign
patents pending.
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STATE POINTS
a. Room Condition 76°F DB/62.0°F WB/45%RH
b. Outside Air 93°F DB/80.0°F WB
c. Mixed Air; 80°F DB/67.0°F WB
d. Precooled Air 72°F DB/64.2°F WB
e. Primary Air 50°F DB/49.8°F WB
f. Reheated Air 58°F DB/53.5°F WB
g. Supply Air 60°F DB/54.5°F WB/70%RH
PROCESS
1. Precooling 88 MBH
2. Primary Cooling 409 MBH
3. Reheat 88 MBH
4. 2°F Allowance for Fan And Motor Heat Gain
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