Note: Descriptions are shown in the official language in which they were submitted.
CA 02416385 2003-01-16
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REFRIGERANT COMPOSITION
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
s The invention relates to a refrigerant composition for use in a compressor-
type refrigerating apparatus. Specifically, the invention relates to
refrigerants
containing HFC compounds in place of environmentally-harmful chlorinated
flourocarbons.
io DESCRIPTION OF THE PRIOR ART
Conventional commercially-available refrigerants typically comprise a mixture
of various components including one or more fluorocarbons. Such refrigerants
are
widely used as refrigerants in air conditioning systems, refrigerators and
other heat
15 pump applications. Conventional heat pumps operate on a principal of cyclic
compression and decompression of the refrigerant, which may undergo a phase
conversation between liquid and gas. Heat is absorbed or removed from a space
by changing the refrigerant from a liquid to a gas or otherwise reducing the
pressure
of the refrigerant. The refrigerant is then compressed within a compressor,
which
20 significantly raises the pressure of the vapour. The high pressure vapor is
conveyed to a condenser, and undergoes a heat exchange with a cooler medium
such as the surrounding air. The release of heat energy to the surrounding air
causes the refrigerant to drop in temperature and condense to a liquid. The
cooled
liquid refrigerant is transmitted back to the cool side, and passed through an
2s expansion valve which lowers the pressure of the liquid causing the liquid
vaporize
by absorbing heat energy from the surrounding air, thus commencing the cycle
again.
It has been found that certain refrigerants possess good qualities for use
with
30 such a system, owning to their ability to undergo a phase change at or near
the
CA 02416385 2003-01-16
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temperatures usuaiiy found at the warm and cool sides of the heat pump, under
pressures readily obtainable by an inexpensive compressor. Until recently,
chlorofluorocarbons were in widespread use, eithei in the forrr nt rs singie
compound or isotropic mixtures containing one or more chlorofluorocarbons
(CFCs). In recent years, environmental considerations riave placed severe
restrictions on the use of CFCs, as these have been found to cause damage to
the
earth's ozone layer. In response to this challenge, alternative refrigerants
were
developed containing hydrofluorocarbons ( HFC') refrigerants, thus avoiding
the
use of environmentally-harmfui chlorinated compounds. The prior art discloses
io various multi-component HFC mixtures. By way of severai representative
examples:
US Patent 6,035,648 to Hickman et al, discloses a refrigerant mixture
consisting of R-32, R-125 and R-134a in the approximate ratio of 25/25/50 A
different mixture of the same three components is disclosed in US Patent 5,
736,063, to Richard et a/. This reference also discloses two component
mixtures,
and mixtures containing propane as a component, as well as carbon dioxide. US
Patent 5,709,092 to Shiflett discloses a mixture of the same three components,
in
the range of 5-59% HFC 125; 5-59% HFC 32; and 5-35% HFC 134 or 134a.
Propane also is disclosed as an additional component A mixture ot the same
three
components is disclosed in US Patent 5,647,224, to Kushiro et at.
Desirably, a refrigerant should be chemically stable, possessed of low
toxicity
and suitable for use in a mechanical system in which the refrigerant is
exposed to
lubricants and metals, without causing corrosion or excessive lubricant
degradation.
In a further aspect, a refrigerant should be miscible with the lubricants used
in a variety of refrigerating devices. Conventional CFC-free refrigerants are
not
suitable for use in a range of refrigerating devices but rather they typically
are
formulated to work in a single type of device. Since many refrigerating
devices
employ mineral oil as a lubricant, the refrigerant shouiti be rrnscible with
`nis
lubricant. Conventional HFC refrigerants tend to be not miscible or easily
miscible
with mineral oil and are thus not suitable for such uses. It is desirable to
provide a
CA 02416385 2003-01-16
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CFC-free refrigerant suitable for use in a number of different types of
refrigerating
devices, in order to simplify fabrication and maintenance of a variety of such
devices.
SUMMARY OF THE INVENTION
The present invention comprises a mixture of three HFC refrigerants
components, along with an alcohol. The alcohol must have a suitable critical
temperature which is compatible with the use of the refrigerant. Preferrably a
lower
to alkyl or branched alkyl alcohol including methanol or ethanol. The most
preferred is
ethanol, preferably anhydrous ethanol. The function of the alcohol is to
improve
miscibility with lubricants typically found in refrigerating devices, in
particular minerai
oils of the type used in the mechanical components of existing R22 based
refrigerating systems. The three HFC components are HFC 32, HFC 125 and HFC
1s 134a. Optionally, the mixture includes a fifth component, namely a lower
alkyl
hydrocarbon such as R290 (propane) or isobutane. The refrigerant of the
present
invention is formulated into a composition compatible with and suitable for
use in at
least one conventional refrigerating device and preferrably several such
devices, i.e.
having a vapour pressure or critical temperature which is similar to that of
20 conventional refrigerating devices.
Without wishing to be restricted to any theory, it is believed that the
addition of the alcohol component enhances the performance of the composition
by
altering the viscosity of the oil that becomes entrained within the
refrigerant during
25 operation of the refrigerating device.
The composition of the present invention comprises HFC 32 in the
amount of about 20% to 25% by weight; HFC 125 in the amount of about 22% to
28% by weight; HFC 134a in the amount of about 48% to 54% by weight; and a
30 lower alkyl alcohol in the amount of about 0.08 to 1% by weight.
In one aspect, the invention is a refrigerant composition comprising HFC 32
from about 22% to 24% by weight; HFC 125 in the amount of about 24 to 26 by
CA 02416385 2007-08-20
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weight and HFC 134a, in the amount of about 49% to 53.3% by weight; and lower
alkyl alcohol in the amount of about 0.6% to 0.8% by weight.
In one aspect, the refrigerant comprises the following formulation:
In a still more preferred embodiment, the mixture comprises HFC 32 at about
23% by weight; HFC 125 at about 25% by weight, HFC 134a at about 51.3% by
weight and ethanol in the amount of about 0.7% by weight.
Optionally, an additional component is added to the mixture, namely a lower
alkyl hydrocarbon in the amount of between 0% and 4.0% by weight. "Lower
alkyl"
means a straight or branched (in the case of C3-C6) chain Cj-C6 with a
preferred
species being isobutane propane with propane being most preferred. Suitable
alkyls
are those which exist in the gas phase at room temperature and atmospheric
pressure. Another suitable lower alkyl is isobutane.
The term "about" used herein means a variation of 0.1 from the expressed
percentages.
DETAILED DESCRIPTION OF THE INVENTION
Having generally described the invention, a detailed and specific example is
presented which is within the scope of the invention but which is merely
illustrated
of the invention.
Examale
A refrigerant composition SP22C was formulated, consisting of a mixture of
HFC 32 (difluoromethane) at 23% by weight, HFC 125 (pentafluoroethane) at 25%
by weight, HFC 134a (1, 1, 1, 2 tetrafluoroethane) at 51.3% by weight; and
3o anhydrous ethanol at 0.7% by weight. In the example, it is believed that
all of the
above amounts were within 0.1 % of the expressed amount.
CA 02416385 2003-01-16
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The order of introducing components into the composition is not of any
consequence. Conventional methods were used to formulate, store and use the
composition.
The mean boiling point (BP) of the above mixture was measured at - 40.1
deg. C @ 1 atm.
The criticai temperature (CT) of the mixture was determined to be 86.0 deg.
C.
For purposes of comparison, the corresponding BP of the common
refrigerant R22 is - 40.8 deg. C@ 1 atm.
In testing, the above composition was found to be miscible in the following
mineral oils: 4GS and 3GS, which are typically found in existing R22 based
systems. The composition was also found to be effective as a refrigerant
working
fluid.
Table 1 shows data generated from testing on R22, a prior art CFC-
containing refrigerant. The test was carried out over four cycles, at an
ambient
temperature of 82 F. Tables 2 through 5 data generated from similar tests
carried
out on the composition of the above example, (identified as composition SP 22
C)
indicating level of performance for the present formulation.
Tables 2, 3 and 4 show test data relating to testing of SP 22 C running in the
same R22 rated unit as the data of Table 1, at three different ambient
temperature
and humidity conditions. Hence, test A (Table 2) was carried out an indoor dry
and
wet bulb temperature condition of 80 and 67 respectively and an outdoor dry
bulb
temperature of 95 (all in Fahrenheit). In test B (Table 3) the respective
conditions
were 80 /57 and 82 . In test C (Table 4) the comparative conditions were 80
/57
and 82 . In test D (Table 5) the comparative conditions were: 80 /57 and 82 .
The test data of Figure 5 (test D) is a "cycle test" to verify consistency in
the test
data. That is, the test machine charged with compound SP 22 C is cycled on and
CA 02416385 2006-01-11
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off in predetermined intervals to ensure that the data generated in the
previous tests
is repeatable with little or no deviation, to illustrate that such a unit can
cycle
independently with little loss of efficiency.
s Although this invention has been described by way of a preferred
embodiment, it will be seen by one skilled in the relevant art or arts that
the full
scope of this invention includes any number of variations of and departures
from the
described non-limiting example.
CA 02416385 2003-01-16
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Table 1
Unit U 11 HIRA018506D & F2RP024N06B
Date: 6103102
Voltage: 208 VAC 60 Hz
Run: 016 Test D. 80157-82"
Barometer: 29.09" Hg
Charge: R- 22, 3.90 lbs
y yc yc e
off on otf on off on off on
0 Locatlon Average Average Average Average Average Average Average Arerage
Units
1 Suwon PSIG 145.73 82.00 145.73 80.74 146.21 79.08 146.16 8020 PSIG
2 SaWralion Temp. N/A 48.79 WA 48.02 N/A 46.95 N/A 47.68 Deg. F
3 Suotion @ Compressor 101.05 68.31 95.79 69.31 94.01 69.23 93.46 70.09 Deg. F
4 Superheat NIA 19.52 N/A 21.29 NIA 2228 N/A 22.41 Deg_ F
Discharge C Comp. PSIG 148.50 227.31 148.53 226.97 148.98 226.82 148.60 226.72
PSIG
6 Saturation Temp. N/A 110.28 N/A 110.18 WA 110.13 N/A 110.10 Deg.F
7 Discharge @ Comp. 97.28 159.39 94.83 156.95 94.15 156.90 93.79 155.90 Deg. F
8 Uquid @ OD Colt PSIG 148.03 212.34 148.10 212.82 148.59 213.77 148.40 212.88
PSIG
9 Saturation Temp. N/A 105.52 NIA 105.68 WA 105.99 WA 105.70 Deg. F
Leaving OD Cod 80.59 94.34 80.56 94.17 80.71 94.29 80.65 94.18 Deg. F
11 Liquld (p? ID Coil PSIG 148.58 211.00 148.71 211.30 148.96 212.95 148.59
211.88 PSIG
12 Satura8on Temp. WA 105.08 N/A 105.18 N/A 105.72 N/A 105.37 Deg.F
13 Liquid @ ID Coil 79.76 93.45 80.16 93.27 80.31 93.43 80.29 93.29 Deg. F
14 Subcool NIA 11.63 N/A 11.91 N/A 12.29 N/A 12.08 Deg. F
Vapor a iD Coi PSIG 147_25 84_72 147.26 83.54 147.73 81.79 147.69 82.88 PSIG
15.1 Saturation Temp. N/A 50.44 N/A 49.72 N/A 48.66 N/A 49.32 Deg. F
17 Leaving ID Coil 75.85 63.51 76.49 65.67 76.85 65.72 76.95 66.24 Deg. F
18 Compressor Dome 113_64 102.62 106.13 97.75 103.52 95.99 102.60 95.75 Deg. F
19 Compressor Surnp 120.09 111.21 111.16 105.08 108.28 103.37 107.37 102.64
Deg.F
Inlet Grid 80.16 79.92 80.14 79.92 80.13 79.98 80.14 79.95 Deg. F
20.1 Discharge Grid 71.72 63.24 72.69 63.30 73.00 62.86 73.25 63.36 Deg. F
21 Tunnel Grid 67.95 66.51 70.53 67.11 71.13 67.07 7129 67.34 Deg. F
Indoor Dry Bulb 80.08 79.85 80.05 79.85 80.04 79.86 80.04 79.87 Deg.F
26 indoor Wet Bulb 59.21 59.09 59.37 59.45 59.67 59.59 60.46 63.31 Deg. F
27 E102.3 OD Dry Bulb 81.90 82.26 81.93 82.33 81.91 82.31 81.93 82.32 Deg. F
28 E102.4 OD Wet BuPo 60.02 60.20 60.12 60.40 60.15 60.29 60.20 60.40 Deg. F
29 Discharge Dry Bulb 67.36 69.79 69.37 70.71 69.87 70.93 70.12 71.18 Deg. F
Discharge Wet Bulb 55.17 55.48 55.95 56.11 56.27 56.11 5624 56.30 Deg. F
31 Blowar Watts 0.00 0.36 0.00 0.35 0.00 0.35 0.00 0.35 KW
32 Condensing Unit Watts 0.00 1.55 0.00 1.56 0.00 1.57 0.00 1.57 t(W
33 Net Air Side Capadty N/A 209.92 N/A 210.08 N/A 210.38 WA 210.4 Votts
34 Voltage B to C N/A 208.58 N/A 208.77 N/A 209.09 N/A 209.19 Volts
Voltage L2 to N N/A 119.30 N/A 119.35 N!A 119.51 NIA 119.52 Volts
36 Voltage L3 to N NIA 121.88 N/A 122.07 N/A 122.28 N/A 122.33 Volts
37 AMPS 2 N/A 9.28 WA 9.30 N/A 9.29 N/A 9.30 Amps
38 AMPS 3 N/A 9.29 WA 9.31 N/A 9.31 N/A 9.33 Amps
39 kWatts TOTAL N/A 1.91 N/A 1.91 N/A 1.92 WA 1.92 KW
FREQ. N/A 59.91 WA 59.93 N/A 59.90 N/A 59.94 Hz
CA 02416385 2003-01-16
6
Mas,...acturer: Protocol Table 2
Unit: M0 HIRA0186060 & F2RP024N06B
Date: 6/30102
Voltage: 208 VAC 60 Hz
Run: # 1 A Test A 80/67--86'"
Barometer. 29.06" Hg
Charge: SP-22C, 3.70 lbs
0 AVRUW
1
2 Saturatlon Temp. 51.15 Deg. F
3 Suction @ Compressor 62.30 Deg. G
4 Superheat 11 16 Deg. F
Discharge Q Comp. PSIG 272.00 PSIG
6 Saturation Temp. 113 00 Deg `
7 Discharge Comp 182.08 Deg..`m
8 Liquid OD Coil PSIG 259.47 ?SIG
9 Satura4on Temp. 11200 Deg. `-
Leaving OD Coil 110.90 Deg, c ff
11 Liquid @ ID Coil PSIG 258.37 PSiG
12 Saturation Temp 112.00 ;,7eg. F
13 Liquid (M ID Coil 109.42 L")eq. F
14 Subcool 2.62 :3eg. F=
Vapor @ ID Coil PSIG 69 10 PSIG
15.1 Saturabon Temp. 51 ,50 L':e.g F
17 Leaving ID Coi 60.90 Deg F
18 Compressor Dome 102.38 ~3eg
19 Compressor Sump 119.5G t'~eq, F~
Tunnel Grid 65.95 -D eg r"
22 Discharge Airflow 877.90 sCP,i
23 Statc 7 1 L ir:= ~late,
24 Condensate from ID Coil 15.46
Indoor Dry Bulb 80.01 Eyep
26 Indoor Wet Bub 67 ~2 Ueg. l
27 E102.3 OD Dry Bulb 95 O t ~-" eg F
28 E102.4 OD Wet Bulb 67.85 U, eg F }
29 Discharge Dry Bulb 64,78 !;e41
Uscharge Wet Bulb 61 3G ;->eg
31 Blower Watts 0 34 IA;
32 Condensing Unit Watta l'u
33 Voltage A to B 206.86 "-,ci x
34 Voltage B to C 207-'0 ~'oits
Voltage L2 to N i 18 27 'Joits
36 VoMage L3 to N 122 04 Inlts
37 AMPS 2 9 93 i',mps
38 AMPS 3
39 kWatto TOTAL 2_c:,4 40 FREQ. 59 98
41 Gross Air Side Capacity 1831,08 BtL, rt
42 Net Air Side Capacity 17150.4 Btu , H
43 EER 849 Htt. Cv1!' -t
44 Caic. Sensible Cap 14575.07 Ste.
Sensible + Condensate 16623.52 Gt.
Conderisate Balance 103.1695 % Air r Gond.
CA 02416385 2003-01-16
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MaTMifadurer ProtooOt Table 3
Unit: M* H1RA018508D & F2RP024N068
Date: 6131102
Voltape: 208 VAC 60 Hz
Run: 8 2A Test B. 80167-52"
Barometer: 29.02" Hg
Charge: 3P-22C, 3.70 fbs
0
Avwmo
1
2 Saturatbn Temp. 48.05 Dog. F
3 Suctlon (~ Compressor e6.a9 Deq. F
4 Supert-eat 20.04 Dog. F
Dlscharge C Comp. P84G 231.46 PSIG
6 SaiuraUon Temp. 104 Deg. F
7 Discharge 0 Cornp. 155.37 Dog. F
8 uquid 0 OD Co9 PSIG 217.43 P8IG
9 Saturadon Temp. 99.2 Deg. F
i.eaving OD CoN 98.19 DeB. F
11 l.iquid DID Col PSIG 216.30 PSIG
12 Satura6on Temp. 99 Deg. F
13 Liquid @ ID Coi! 97.37 Deg. F
14 Subcool 1.63 Deg. F
Vapor C ID CoG PSIG 84.10 PSIG
15.1 Saturation Temp. 49.5 Dog. F
17 Leaving ID Co5 62.05 DeQ. F
18 Compressor Dome 98.86 Deg. F
19 Compressor Sump 113.88 Dog. F
21 Tunnel Giid 65.28 Dog. F
22 Disoharpe Airflow 875.4 SCFM
23 Static 0.1 In Water
24 Condensate t`rom ID CotR 25.15 Oz
Indoor Dry Bufb 80,01 Dog. F
26 Indoor Wet BuAb 67.01 Des. F
27 E402.3 OD Dry Bulb 82.01 Dog. F
28 E102.4 OD Wet Bdb 62.96 Deg. F
29 Discharge Dry Bub 64.24 Dog. F
Discharge Wet Bul6 60.53 Dog. F
31 Blower Watts 0.34 KW
32 Condensing Unft Watts 1.67 KW
33 Voltape A to B 208.74 Vob
34 Voltage B to C 207.74 Volts
VoftaQe L2 to N 123.57 Vvlts
36 Vottage L3 to N 118.43 Voles
37 AMPS 2 9.32 Amps
38 AMPS 3 9.33 Amps
39 kWatts TOTAL 1.91 KW
FREQ. 59.92 Hx
41 Gross Air Side Capacity 20070.1 Btq I H
42 Net Air Side Capacity 18909.6 Btu / H
43 EER 9.9 ft/W=H
44 Calc. Sensible Cap. 15045.48 Btu
Seneible + Condensate 18377.86 Btu
Condensate Balance 102.8934 % Air / Cond.
CA 02416385 2003-01-16
Marwtacturer: Protocol Table 4
Unit: M 31i1RA0185050 & F2RP024N06B ~
Date: 5131102
Voltage: 208 VAC 60 Hz
Run: # 3A Test C, 80167--82"'
Barometer: 28.94" tig
Charge: SP-22C, 3.70 tbe
0
1
2 Saturation Temp. 44.60 7eg. F
3 Suction @ Compressor 62_53 Deg. F
4 Superheat 17 93 Deg, F
Discharge @ Comp. PSIG 229.02 PSIG
6 Saturation Temp. 104.00 i3eg. F'
7 Discharge @ Comp. 153.69 Deg. F
8 Liquid @ OD Coil PSIG 215.79 PSIG
9 Saturation Temp, 98,90 ~)eg. F
Leaving OD Coil 97.54 Deg. F
11 Liquid @ ID Coil PSIG 215.08 ?SIG
12 Saturation Temp. 99.80 t)eg. F
13 Liquid @ fD Coil 96.93 Jeg. F
14 Subcool 2 87 0eg. F
Vapor @ ID Coil PSIG 80.96 ?'SiG
15.1 Saturation Temp. 45.80 Deg. F
17 Leaving ID Coil 59,49 :)eg. F
18 Compressor Dome 96.92 ~)eg. F
19 Compressor Surnp 112.34 Deg. fi
Inlet Grid 8(?.13 :~eg F
20.1 Discharge Grid 61.54 :'aeg F
21 Tunnel Grid 62.72 :::eg: F
22 Discharge Airflow 877.70 c'CFM
23 Static 0.10 In Water
24 Gondensate from ID Coil N/A ?a
Indoor Dry Bulb 80.00 L>eg. F
26 Indoor Wet Bulb 58,79 Dey F
27 E102.3 00 Dry Bulb 82.00 Geg. F
28 E102.4 OD Wet Bulb 60 31 Deg F
29 Discharge Dry Bulb 61.57 ljeg. F
Discharge Wet Bulb 51 73 Deg F
31 Blower Watts 0 34 '<Vv'
32 Condensing Unit Watis 1.56 KW
33 Vottage A to B 208.31 ','nits
34 Voltage B to C 206.51 Volts
Voltage L2 to N 118.26 c,its
36 Voltage L3 to N 120.97 VoMts
37 AMPS 2 9.23 timps
38 AMPS 3 9 28 Arnps
39 kWatts TOTAL 1 9C ~(w
FREQ. 59 97 Hz
41 Gross Air Side Capacity 18438_ 1 8tu 1' H
42 Net Air Side Capacity 17277.7 Bti.a f H
43 EER 9.09 9tu iH
CA 02416385 2003-01-16
M. aaurer. Protocol Table 5
u-it: M Y HIRA0185080 & F2RP024N06b
Date: 5171102
Voltage: 208 VAC 60 Hz
Run: 114A Teat 0, 80167--821'
Barometer: 28.94" Hg
Charge: SP-22C, 3.70 lbs
oR On o(f on Off on otf on
0 Location Average Avrrage wrage verape vwru}~a Avemge Average Average
I
2 SatutNion Temp. N/A 45.32 N/A 44.85 NlA 44.80 N/A 44 55
3 Suction a Compreseor 96.21 63.76 91.32 64.05 90.38 64.10 89.96 64.20
4 Superheat N/A 18.43 N/A 19.20 N/A 19.30 N/A 1965
Disch6rg Comp. PSIG 151.04 229.98 151.30 229.83 151.48 228.98 151.80 22952
6 Satutation Temp. N/A 104.00 N/A 103.90 N/A 103.10 N/A 103.75
7 Diacharge @ Comp. 95,88 145.82 85.10 144.36 94.69 143.80 94.53 143.81
8 l.iquid 00 Coil PSIG 149.20 216.83 150.93 215,90 149.92 216.04 150.15
216.55
9 SaturaUon Temp. N/A 98.10 N/A 97.80 N/A 97.85 N/A 98.05
Leaving 00 Coit 79.84 97.42 79.89 97.28 79.90 97,09 80.31 97.18
11 Liquid @ ID Coil PSIG 150.75 214.95 151.00 215.32 151.22 214.62 151.46
215.24
12 Saturation Temp. N/A 97.65 N/A 97.70 N/A 97.55 N!A 97.7
13 Liquid @ ID Coil 79.76 96.38 79.75 96.28 79.99 96.11 79.98 96 18
14 Subcool N/A 1.01 N/A 1.42 N/A 1.44 N/A 1.52
Vapor @ ID Coil PSIG 149.66 82.26 149.89 81.38 150.09 81.31 150.36 80_88
15.1 Saturation Temp. N/A 46.60 N/A 48.10 N/A 46.10 N/A 45.95
17 Leaving ID Coii 77.21 61.89 77.42 61.87 77.67 61.83 77.67 81.89
18 Compressor Dome 105.67 96.91 100.55 93.90 99.18 93.06 98.63 92.89
19 Compressor Sump 109.85 102.87 104.36 99.74 102.88 98.90 102.29 98.54
Inlet Grid 80.13 79.89 80.10 79.89 80.11 79.87 80.09 79.85
20.1 Discharge Grid 72.50 64.17 72.87 63.99 73 1T 63.96 73.38 63.97
21 Tunnel Grid 69,00 67.29 71.40 67.71 71.89 67.80 72.06 67.97
Indoor Dry Bulb 80.05 79.88 80.03 79.89 80.03 79.88 80.03 79.88
28 Indoor Wet Bulb 59.24 59.08 59.27 58.80 59.41 58,91 59.53 59.35
27 E102.3 OD Dry Bulb 81.89 82.38 81.90 82.36 81.91 82.32 81.92 82.33
28 E102.4 OD Wet Bulb 60.48 80.76 60,49 80.45 60.65 60.49 61.02 61.92
29 Discharge Dry Bulb 68.20 70.39 89.64 70.99 70.21 71.08 70.44 71.34
Discharge Wet Bulb 55.51 55.60 55.99 55.49 56.04 55.51 58.00 55.81
31 Blower Watts 0.00 0.35 0.00 0.35 0.00 0.35 0.00 0,35
32 Condensing Unit Watta 0.00 1.57 0.00 1.58 0.00 1.57 0.00 1.57
33 Vohage A to B N/A 208.47 N/A 208.94 N/A 209.72 N/A 209.35
34 Voltage B to C N/A 207.17 N/A 207.47 N/A 208.18 N/A 208.25
Vohage L2 to N N/A 118.44 N/A 118.65 N/A 119.08 N/A 118 82
36 Vohage L3 to N N/A 121.39 N/A 121.59 N/A 122.02 N/A 122.42
37 AMPS 2 N/A 9.31 N/A 9.29 N/A 9.32 N!A 9.33
38 AMPS 3 N/A 9.37 N/A 9.33 N/A 9.35 N/A 9.35
39 kWatts TOTAL N/A 1.92 N/A 1.91 N/A 1.92 N/A 1.92
FREQ. N/A 80,00 N/A 59.97 N/A 80 N/A 60.00
