Frigid-X™
Cabinet Cooler Operation
Filtered, compressed
air enters the Frigid-X™ Cabinet Cooler and through
the vortex tube component.
The air is split into into two streams, one hot and
one cold.
The muffled hot air from the vortex tube is expelled
through the top of the air conditioner. The cold air
is directed into the enclosure through the cold air
distribution hose. Hot air inside the enclosure rises
and exits to atmosphere via the air exhaust at a slight
positive pressure. The enclosure is both purged and
cooled with clean air. No outside air enters the enclosure.
Frigid-X™
Cabinet Cooler Advantages
-
- Compact
- No CFC's
- Fast installation
- Stabilize enclosure
temperature and humidity
- Virtually maintenance
free (No Moving Parts)
- Mounts in a standard
electrical knockout
- Stops heat damage
and nuisance tripping
- Eliminates fans
and filters
- Prevents dirt contamination
by keeping enclosure at positive pressure
- Units applicable
to all environments including high temperature to
200ºF
Frigid-X™
Cabinet Cooler Applications
-
- Frequency Drives
- CCTV Cameras
- NC/CNC Systems
- Scanners
Frigid-X™
Cabinet Cooler Selection
Cabinet
Cooler Air Conditioning Systems Frigid-X™ comes
with a 5 micron filter with an automatic drain for
the compressed air supply to insure clean, dry air
and an air distribution kit to circulate the cold
air inside the enclosure for even cooling.
Cabinet Cooler
Air Conditioning Systems Frigid-X™
is available with or without thermostat control.
When constant
cooling and a constant positive purge is required
we recommend the continuous operating version without
the thermostat and solenoid valve. The cooling effect
can be controlled by adding a regulator in line to
reduce pressure for reduced cooling when it is not
required and to conserve energy.
Systems utilizing a thermostat and solenoid valve
saves air by activating the air conditioner only when
the internal temperature reaches a critical level.
The adjustable thermostat is factory set at 95°F
but can be readjusted on site.
Thermostat and solenoid valve systems are recommended
where the heat load can fluctuate (such as for frequency
drives) and where a continual purge is not required.
The thermostat and solenoid "package" can
also be added at a later date to a continuous system.
Frigid-X™
Cabinet Cooler Sizing Specifications
Contact Nex Flow™
Technologies for assistance in sizing the Frigid-X™
Enclosure Coolers.
Below see Sizing Specifications for the Frigid-X™
Enclosure Coolers.
|
MODEL
NO.
|
VERSION
|
BTU/Hr.
cooling*
(WATTS)
|
|
61015
|
NEMA
12 Continuous Operation
|
1100
(322)
|
|
61025
|
NEMA
12 Continuous Operation
|
1800
(527)
|
|
61030
|
NEMA
12 Continuous Operation
|
2100
(615)
|
|
61040
|
NEMA
12 Continuous Operation
|
2900
(849)
|
| |
|
|
|
63015
|
NEMA
12 on-off control
|
1100
(322)
|
|
63025
|
NEMA
12 on-off control
|
1800
(527)
|
|
63030
|
NEMA
12 on-off control
|
2100
(615)
|
|
63040
|
NEMA
12 on-off control
|
2900
(849)
|
*Cooling effect based
on 95 degrees temperature inside cabinet, 100 PSIG
(6.9 BAR) compressor inlet pressure, and 70ºF
(21ºC) inlet temperature.
BTU/hr. figures rounded to nearest 100 BTU/hr (1
WATT).
All Continuous Operation models include the cooling
unit, filter with auto drain and cold air distribution
kit.
All On-Off control
units include the cooling unit, filter with auto
drain, cold air distribution kit, solenoid valve
and thermostat.
Calculating
Heat Load In Your Electrical/Electronic Panel
Enclosure
Cabinet
Cooler Sizing Guide Request Form
Total heat load
consists of the heat transfer from outside your
panel and from the heat dissipated inside the
control unit.
Useful terms, and conversions:
1 BTU/hr = 0.293 watts
1 BTU/hr - 0.000393 horsepower
1 Watt = 3.415 BTU/hr
1 horsepower = 2544 BTU/hr
1 Watt = 0.00134 horsepower
1 Square Foot = 0.0929 square meters
1 Square Meter = 10.76 square foot
Typical fan capacity:
4" fan: 100 CFM (2832 LPM)
6" fan: 220 CFM (6230 LPM)
8" fan: 340 CFM (9628 LPM)
10" fan 550 CFM (15574 LPM)
BTU/hr. cooling effect from fan 1.08 x (temp.
inside panel in ºF - temp. outside panel
in degrees F) x CFM
Watts cooling effect from fan: 0.16 x (temp. inside
panel in ºC - temp. outside panel in degrees
C) x LPM
Calculating BTU/hr. or Watts
1. Determine the
heat generated inside the enclosure. Approximations
may be necessary. For example, if you know the
power generated inside the unit, assume 10% of
the energy is dissipated as heat.
2. For heat transfer from the outside, calculate
the area exposed to the atmosphere except for
the top of the control panel.
3. Choose the internal temperature you wish to
have, and choose the temperature difference between
it an the maximum external temperature expected.
4. From the conversion table that follows, determine
the BTU/hr. per square foot (or watts per square
meter) for the temperature difference.
5. Multiply the panel surface area times the BTU/hr.
per square foot (or watts per square meter) to
get the external heat transfer in BTU/hr or in
watts.
6. Sum the internal and external heat loads calculated.
7. If you do not know the power used in the enclosure
but you can measure temperatures, then measure
the temperature difference between the outside
at current temperature, and the present internal
cabinet temperature.
8. Note size and number of any external fans.
Provide this information to Nex Flow™ Technologies
to assist in sizing the appropriate cooling system.
|
Temperature
Difference in ºF
|
BTU/hr./sq.
ft.
|
Temperature
Difference in ºC
|
Watts/sq.m
|
|
5
|
1.5
|
3
|
5.2
|
|
10
|
3.3
|
6
|
11.3
|
|
15
|
5.1
|
9
|
17.6
|
|
20
|
7.1
|
12
|
24.4
|
|
25
|
9.1
|
15
|
31.4
|
|
30
|
11.3
|
18
|
39.5
|
|
35
|
13.8
|
21
|
47.7
|
|
40
|
16.2
|
24
|
55.6
|
Example
The control panel has two frequency drives totaling
10 horsepower and one module rated at 100 watts.
The maximum outside temperature expected is 105ºF
or 40.5ºC. The area of the control panel exposed
sides, except for the top is 42 square feet or 3.9
square meters. We want the internal temperature
to be 95ºF or 35ºC.
Total internal power is 10 hp x 746 watts/hp - 7460
plus 100 watts = 7560 watts.
Assume 10% forms heat = an internal heat load of
756 watts.
Or
Total internal power is 10 hp x 2544 BTU/hp = 25440
BTU/hr plus 100 watts x 3.415 BTU/hr/watt = 25782
BTU/hr.
Assume 10% forms heat = an internal heat load of
2578 BTU/hr.
External heat load: The temperature difference between
the desired temperature and the outside is 10ºF
or 5.5ºC. Using the conversions (and interpolating
where necessary) we multiply the area by the conversion
factor:
42 sq. ft x 3.3 - 139 BTU/hr or 3.9 sq. m x 10.3
= 40 watts
Total Heat Load: 756 + 40 - 796 watts or
2578 + 139 - 2717 BTU/hr.
You would use a Model
61040 for constant operation or a Model 63040 for
one-off control.
(Rated at 2900 BTU/hr or 849 watts).
