TX6 Thermo Expansion Valves Technical Data

TX6 Thermo Expansion Valves  Technical Data
TX6
Thermo Expansion Valves
Technical Data
ALCO’s TX6 series of Thermo-Expansion Valves are
designed for air conditioning, chillers, rooftops, close control,
A/C transportation, heat pumps, industrial cooling process and
refrigeration applications. The TX6 is ideal for those
applications requiring hermetic / compact size combined with
stable and accurate control over wide load and evaporating
temperature ranges.
Features
•
Balance port construction for constant superheat
operation over a wide application range under variation
of condensing pressure
•
Six sizes up to 97 kW (R410A)
•
Compact size
•
Hermetic design
•
Brazing connections with straight through configuration
•
Long life laser welded stainless steel power element
resists corrosion
•
Large diaphragm eliminates disturbances to the valve
and provides smoother and consistent valve control
•
Tailored charges for different applications
•
External equalizer
•
External superheat adjustment
•
Brass body
TX6
Introduction
Construction
Thermo-Expansion Valves control the superheat of refrigerant
vapour at the outlet of the evaporator. They act as a throttle
device between the high and low pressure sides of refrigeration
system and ensure the rate of refrigerant flow into the
evaporator exactly matches the rate of evaporation of liquid
refrigerant. Thus the evaporator is fully utilized and no liquid
refrigerant may reach the compressor.
The valve body is made from brass, the connections are in a
straight through configuration. The diaphragm movement is
transferred to a steel metering pin. When the charge pressure
increases, the diaphragm will be deflected downward and this
motion will be transferred to the pin. The pin will then lift from
seat and the liquid can pass through orifice.
The pin design gives the balance port feature. Balance port
design will eliminate the undesirable variable influence of inlet
pressure i.e. condensing pressure during different air ambient
temperature in systems with aircooled condenser.
The balance port design is only available in one direction as
arrow indicates on the valve. This means, when the valve
operates as Bi-flow in heat pump applications, the advantage of
balance port is given in cooling or heating mode.
A spring opposes the force underneath the pin and its tension
can be adjusted by the external stem. The static superheat can
be adjusted by rotation of the stem. Static superheat increases
by turning the stem clockwise and decreased by turning the
stem counter clockwise.
When the actual superheat is higher than the setpoint, thermo
expansion valve feeds the evaporator with more liquid
refrigerant. Likewise, the valve decreases the refrigerant flow to
the evaporator when the actual superheat is lower than the set
point.
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TX6
Thermo Expansion Valves
Description of bulb charges
The application ranges of Thermo expansion valves are
heavily influenced by the selected charge.
Liquid charges
The behaviour of Thermo-Expansion Valves with liquid
charges is exclusively determined by temperature changes at
the bulb and not subject to any cross-ambient interference.
They feature a fast
response time and thus react quickly in the control circuit.
Liquid charges cannot incorporate MOP functions. The
maximum bulb temperatures is limited and shall not exceed the
values, shown in the following table:
Table 1:
Refrigerant/Charge
Performance of TXV with MOP function, gas charge
Static superheat
MOP
Working range
Evaporating
temperature/
pressure
Valve operates as superheat control in normal working range
and operates as pressure regulator within MOP range.
Maximum bulb temperature
R 134a / M0
R 407C / N0
R 22 / H0
Practical hints:
Superheat adjustments influence the MOP:
•
Increase of superheat: decrease of MOP
•
Decrease of superheat: increase of MOP
88°C
71°C
71°C
Gas charges
The behaviour of Thermo-Expansion Valves with gas charges
will be determined by the lowest temperature at any part of the
expansion valve (power assembly, capillary tube or bulb). If any
parts other than the bulb are subject to the lowest temperature,
malfunction of the expansion valve may occur (i.e. erratic low
pressure or excessive superheat). ALCO TX6 with gas charges
always feature MOP functions and include ballasted bulbs.
Ballast in the bulb leads to slow opening and fast closure of the
valve. Maximum bulb temperature is 120°C.
MOP (Maximum Operating Pressure)
MOP functionality is somewhat similar to the application of a
crankcase pressure regulator.
Evaporator pressures are limited to a maximum value to protect
compressor from overload conditions.
MOP selection should be within maximum allowed low pressure
rating of the compressor and should be at approximately 3 K
above maximum evaporating temperature.
Table 2: MOP value, gas charge
MOP
Upper limit of evaporating temperature
°C
Code
bar
°C
R407C
R22
R 410A
R134a
N1
H1
M1
Z1
6.9
6.9
3.8
12.1
+17
+15
+14
+16
+14
-
+12
-
+14
+10
Note: All pressures are gauge pressure
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TX6
Thermo Expansion Valves
Heat pump applications
There are several ways to apply an expansion valve in a heat pump. The following figures are showing the most popular
applications:
1) System with two expansion valves, single Bi-flow filter
dryer and two check valves
3) System with single Bi-flow expansion Valve and Alco
suction filter dryer ASD
Four way valve
Four way valve
Outdoor
coil
Outdoor
coil
Check valve
BFK
Bi-flow
ASD
TX6
Compressor
Compressor
Accumulator
Indoor coil
Accumulator
Indoor coil
Check valve
This type of system employs two expansion valves and two
check valves. In this type of application, it is recommended
to locate the external equalizer and bulb on the suction line
between reversing valve and suction accumulator (if
available) or compressor as shown.
Bi-flow application
For application of TX6 in Bi-flow as single TXV in heat pumps,
the following subjects need to be considered:
2) System with single Bi-flow expansion Valve and Alco Biflow filter dryer(s) BFK
•
TX6 is balance port only in normal flow direction but not in
reverse flow direction
•
Inlet pressure in reverse flow act on valve pin as closing
force. This effect is more significant at higher inlet
pressure and lower evaporating temperature
Four way valve
Outdoor
coil
•
This effect will prevent the valve from desired opening
percentage in reverse flow dependant to port size of valve,
inlet pressure and evaporating temperature
Based on the above facts, it is necessary to evaluate the
selection of TX6 in Bi-flow application. The following curves and
table are as guidance for proper selection of TX6 in BI-flow
application.
BFK
Bi-flow
TX6
Compressor
Accumulator
Indoor coil
TX6-N07, Static superheat shifting
Inlet pressure: 8 bar
TX6-N02, Static superheat shifting
Inlet pressure: 8 bar
8
20
Normal flow
Reverse flow
4
2
Reverse flow
12
8
4
0
-30
Normal flow
16
SS, K
SS, K
6
-25
-20
-15
-10
-5
0
5
10
15
0
-30
To, °C
TX6__35011_EN_R06.doc
-25
-20
-15
-10
-5
0
5
10
15
To, °C
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17.03.2008
TX6
Thermo Expansion Valves
Size of valve
Small port size
(TX6-..2 /..3)
Condition in reverse flow
High or low operating inlet
pressure
High evaporating
temperature
Low evaporating
temperature
High or low operating inlet
pressure
Large port size
(TX6-..4 /..5 /..6 /..7) Higher evaporating
temperature
Impact on operation of
valve
Application of
valve in Bi-flow
Consideration for
performance improvement
Negligible
Negligible
Recommended
None
This needs to be
evaluated *
This needs to be
evaluated *
-
Slightly increase of
superheat
Increase of superheat
Increase of superheat
-
Lower evaporating
temperature
Significant increase of
superheat
Not
recommended
Lower system capacity in
reverse vs. normal flow
Reduction of compressor
capacity
Oversized valve
No solution
*) During system design and prototype unit test.
Other Subjects to be considered in Bi-flow applications:
•
In an air to water (liquid) systems, it may require a receiver
in order to hold excessive refrigerant in one mode of
operation
•
Do not install the Bulb of TXV between accumulator and
compressor
•
It is possible to install several Bi-flow filter dryers in
parallel in system with larger capacity
•
It is important to provide proper refrigerant distribution
through liquid distributor at the inlet of evaporator due to
distance between TXV and distributor
Static superheat setting
The factory setting of a TX6 is made with the valve pin just
starting to move away from the seat. The superheat increment
necessary to get the pin ready to move is called static
superheat (SS). An increase of superheat over and beyond the
static superheat (factory setting) is necessary for the valve pin
to open to its rated capacity. This additional superheat is known
as gradient or opening superheat (OS).
The working superheat (WS), which can be measured in the
field, is the sum of static superheat and opening superheat.
The opening superheat of TXV varies if the selected valve
operates at higher or lower capacities than the rated capacity. It
is highly recommended to select the valve according to the
rated capacity. Using reserve capacity leads to larger opening
superheat and longer pull down time during start-up or after
defrost.
Selecting a larger valve than required in a system may lead to
smaller opening superheat and/or hunting of TXV.
Capacity
Qr = Reserve capacity
Qmax.
Qr
Qn
Superheat (K)
SS
OS
WS
Qr ≈ 15% for TX6-..2/3/4/5/6
Qr ≈ 10% for TX6-..7
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TX6
Thermo Expansion Valves
Standard superheat setting
Charge
Refrigerant/
charge code
Refrigerant
M0
R 134a
Liquid (no MOP)
N0
R 407C
H0
R 22
MOP 3.8 bar
M1
R 134a
MOP 6.9 bar
N1
R 407C
MOP 12.1 bar
H1
R 22
Z1
R 410A
Setting
Given
Bulb temperature
Nominal static
superheat (SS)
Nominal opening
superheat (OS*)
0°C
3.3 K
3K
*) The given opening superheats valid when the capacity of selected valve is equal to the capacity of system at
design / operating conditions. Note : All pressures are gauge pressure.
Nomenclature and identification
TX6 -
N 1 7
Valve series
Refrigerant
N: R407C
H: R22
M: R134a
Z: R410A
Charge
0: Liquid
1: Gas MOP (see table 2, page 2)
Capacity size
2, 3, 4, 5, 6, 7 (see page 6 and 7)
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TX6
Thermo Expansion Valves
Selection table
Refrigerant
R 407C
R 22
R 134a
R 410A
Nominal capacity Qn
kW
Without MOP
Type
PCN
With MOP *)
Type
PCN
Connection size
Equalizer
Inlet x Outlet
14.4
14.4
25.6
25.6
35.7
35.7
45.2
45.2
66.9
66.9
87.3
87.3
TX6-N02
TX6-N02
TX6-N03
TX6-N03
TX6-N04
TX6-N04
TX6-N05
TX6-N05
TX6-N06
TX6-N06
TX6-N07
TX6-N07
801 651
801 653
801 652
801 654
801 659
801 663
801 660
801 664
801 661
801 665
801 662
801 666
TX6-N12
TX6-N12
TX6-N13
TX6-N13
TX6-N14
TX6-N14
TX6-N15
TX6-N15
TX6-N16
TX6-N16
TX6-N17
TX6-N17
801 655
801 534
801 656
801 535
801 667
801 536
801 668
801 537
801 669
801 538
801 670
801 539
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
12mm x 16mm
1/2" x 5/8"
12mm x 16mm
1/2" x 5/8"
16mm x 22mm
5/8" x 7/8"
16mm x 22mm
5/8" x 7/8"
22mm x 28mm
7/8" x 1-1/8"
22mm x 28mm
7/8" x 1-1/8"
13.3
13.3
23.7
23.7
33.0
33.0
41.8
41.8
61.9
61.9
80.8
80.8
TX6-H02
TX6-H02
TX6-H03
TX6-H03
TX6-H04
TX6-H04
TX6-H05
TX6-H05
TX6-H06
TX6-H06
TX6-H07
TX6-H07
801 551
801 549
801 552
801 550
801 585
801 581
801 586
801 582
801 587
801 583
801 588
801 584
TX6-H12
TX6-H12
TX6-H13
TX6-H13
TX6-H14
TX6-H14
TX6-H15
TX6-H15
TX6-H16
TX6-H16
TX6-H17
TX6-H17
801 555
801 553
801 556
801 554
801 593
801 589
801 594
801 590
801 595
801 591
801 596
801 592
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
12mm x 16mm
1/2" x 5/8"
12mm x 16mm
1/2" x 5/8"
16mm x 22mm
5/8" x 7/8"
16mm x 22mm
5/8" x 7/8"
22mm x 28mm
7/8" x 1-1/8"
22mm x 28mm
7/8" x 1-1/8"
10.3
10.3
18.4
18.4
25.6
25.6
32.5
32.5
48.1
48.1
62.8
62.8
TX6-M02
TX6-M02
TX6-M03
TX6-M03
TX6-M04
TX6-M04
TX6-M05
TX6-M05
TX6-M06
TX6-M06
TX6-M07
TX6-M07
801 543
801 541
801 544
801 542
801 569
801 565
801 570
801 566
801 571
801 567
801 572
801 568
TX6-M12
TX6-M12
TX6-M13
TX6-M13
TX6-M14
TX6-M14
TX6-M15
TX6-M15
TX6-M16
TX6-M16
TX6-M17
TX6-M17
801 547
801 545
801 548
801 546
801 577
801 573
801 578
801 574
801 579
801 575
801 580
801 576
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
12mm x 16mm
1/2" x 5/8"
12mm x 16mm
1/2" x 5/8"
16mm x 22mm
5/8" x 7/8"
16mm x 22mm
5/8" x 7/8"
22mm x 28mm
7/8" x 1-1/8"
22mm x 28mm
7/8" x 1-1/8"
TX6-Z12
TX6-Z12
TX6-Z13
TX6-Z13
TX6-Z14
TX6-Z14
TX6-Z15
TX6-Z15
TX6-Z16
TX6-Z16
TX6-Z17
TX6-Z17
801 510
801 511
801 512
801 513
801 514
801 515
801 516
801 517
801 518
801 519
801 520
801 521
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
Ext. 1/4"
12mm x 16mm
1/2" x 5/8"
12mm x 16mm
1/2" x 5/8"
16mm x 22mm
5/8" x 7/8"
16mm x 22mm
5/8" x 7/8"
22mm x 28mm
7/8" x 1-1/8"
22mm x 28mm
7/8" x 1-1/8"
16.0
16.0
28.0
28.0
40.0
40.0
50.0
50.0
74.0
74.0
97.0
97.0
Nominal capacities at +38°C saturated condensing temperature, +4°C saturated evaporating temperature and 1 K subcooling at the inlet of the
expansion valve. Valve selection for other operating conditions see pages 7 to 11.
*) See table 2 on page 2 for MOP values.
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TX6
Thermo Expansion Valves
Dimensioning of Thermo-Expansion Valves
To apply proper Thermo-Expansion Valves on a system the
following design conditions must be available:
•
Cooling capacity Q0
•
Effective pressure differential across TXV ∆p
•
Evaporating temperature / pressure
•
Lowest possible condensing temperature / pressure
•
Liquid temperature at the inlet of TXV
•
Refrigerant type
To facilate valve dimensioning for other than the standard
conditions ALCO offers an Excel based Selection Tool. This
can be ordered from all Copeland sales offices. See
www.eCopeland.com for contact addresses, email or phone
numbers.
Otherwise the following formula has to be used:
Cooling capacity x K∆p x Kt = Nominal capacity of TXV
•
Select Kt-factor according to refrigerant. liquid and
evaporating temperature from tables on pages 9-11.
•
Determine effective pressure differential across the
Thermo-Expansion Valve using condensing pressure.
subtract evaporating pressure and all other possible
pressure losses. Select K∆p-factor from tables
on pages 11 … 12.
Example 1
A valve has to be selected for the following conditions:
Refrigerant
System cooling capacity
Evaporating temperature
Lowest condensing temperature
Liquid temperature
Valve without MOP
R 22
45 kW
+5°C
+30°C
+25°C
Calculation:
1. Theoretical pressure differential:
Lowest condensing pressure is Pc = 11.9 bara at +30°C and
evaporating pressure is P0 = 5.8 bara at +5°C
Differential pressure is Pc - P0 = 11.9 – 5.9 = 6 bar
2. Pressure losses:
Across distributor = 1.0 bar
Others in piping. solenoid valve. drier. sight glass. fitting.
etc. = 0.5 bar
Total pressure losses = 1 + 0.5 = 1.5
3. Effective pressure differential across valve:
6.0 – 1.5 = 4.5 bar
TX6__35011_EN_R06.doc
4. Correction factors:
Correction factor K∆p for the pressure differential 4.5 bar
from table on page 9 for R 22
∆p = 4.5
K∆p = 1.42
Correction factor Kt for liquid and evaporating temperature
from table on page 9 for R 22 at +25°C / 5°C
Kt = 0.89
5. Calculation of nominal capacity Q0 x K∆p x Kt = Qn
45 x 1.42 x 0.89 = 56.9 kW.
You can select the valve from table on page 6.
It is a TX6-H06 with a nominal capacity of 61.9 kW.
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TX6
Thermo Expansion Valves
Dimensioning of Thermo-Expansion Valves for
systems with refrigerant R 407C
As opposed to single substances (e.g. R 22. R 134a etc.) where
the phase change takes place at a constant temperature /
pressure. the evaporation and condensation of zeotropic blend
R407C is in a “gliding” form (e.g. at a constant pressure the
temperature varies within a certain range) through evaporators
and condensers.
The condensing / evaporating pressure must be determined at
saturated temperatures (bubble / dew points) for dimensioning
of Thermo-Expansion Valves.
P
(bar)
R407C
35.5°C
13.6
30°C
+5°
C
5.5
-1°C
h
Example 2:
System cooling capacity (R407C)
Evaporating temperature (dew point)
Lowest condensing temperature (bubble)
Liquid temperature
Valve without MOP
55 kW
+5°C
+30°C
+25°C
Calculation:
1. Theoretical pressure differential:
Differential pressure is Pc - P0 = 13.6 – 5.5 = 8.1 bar
2. Pressure losses:
Across distributor = 1 bar
Others in piping, solenoid valve, drier, sight glass, fitting
etc. = 0.6 bar
Total pressure losses = 1 + 0.6 = 1.6
3. Effective pressure differential across valve:
8.1 - 1.6 = 6.5 bar
4. Correction factors:
Correction factor K∆p for the pressure differential 9.39 bar
from table on page 9 for R 407C
∆p = 6.5 bar
K∆p = 1.31
Correction factor Kt for liquid and evaporating temperature
from table on page 9 for R 407C at +25°C / +5°C
Kt = 0.85
5.
Calculation of nominal capacity Q0 x K∆p x Kt = Qn
55 x 1.31 x 0.85 = 61.2
You can select the valve from table on page 6.
It is a TX6-N06 with a nominal capacity of 66.9 kW.
Dimensioning of Thermo-Expansion Valves for heat
pump applications
Example 3:
A heat pump with following design conditions:
Cooling mode
Cooling capacity (R 22)
Condensing temperature
Evaporating temperature
Liquid temerature
Valve without MOP
20 kW
+45°C
+5°C
45°C
1. Theoretical pressure differential:
Differential pressure is Pc - P0 = 17.3 – 5.8 = 11.5 bar
2. Pressure losses: total pressure losses = 1.6
3. Effective pressure differential across valve:
11.5 – 1.6 = 9.9 bar
4. Correction factors:
∆p = 9.9
K∆p = 0.96
at +5°C and 45°C
Kt = 1.07
5. Calculation of nominal capacity Q0 x K∆p x Kt = Qn
20 x 0.96 x 1.07 = 20.5 kW
You can select the valve from table on page 6
Heating mode (Reverse flow)
Heating capacity (R 22)
15 kW
Condensing temperature
+30°C
Evaporating temperature
-10°C
Liquid temperature
+30°C
1. Theoretical pressure differential:
Differential pressure is Pc - P0 = 11.9 – 3.5 = 8.4 bar
2. Pressure losses: total pressure losses = 1.6
3. Effective pressure differential across valve:
8.4 – 1.6 = 6.8 bar
4. Correction factors:
∆p = 6.8
K∆p = 1.16
at -10°C and 30°C
Kt = 0.99
5. Calculation of nominal capacity Q0 x K∆p x Kt = Qn
15 x 1.42 x 0.89 = 17.2 kW.
TX6-H03 has sufficient capacity in reverse flow for 17.2 kW.
It is a TX6-H03 with a nominal capacity of 23.7 kW.
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TX6
Thermo Expansion Valves
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
-5
- 10
Correction factor Kt
Evaporating temperature °C
R22
+20
+ 15
+10
+5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
1.24 1.25 1.26 1.28 1.30 1.31 1.38 1.58 1.84 2.16 2.56 3.04 3.55 4.23
1.16 1.17 1.19 1.20 1.22 1.23 1.29 1.42 1.72 2.02 2.39 2.83 3.30 3.94
1.10 1.11 1.12 1.13 1.15 1.16 1.21 1.39 1.62 1.89 2.24 2.66 3.10 3.68
1.04 1.05 1.06 1.07 1.08 1.10 1.15 1.31 1.52 1.79 2.11 2.50 2.91 3.46
0.99 1.00 1.01 1.02 1.03 1.04 1.09 1.24 1.45 1.69 2.00 2.37 2.75 3.27
0.94 0.95 0.96 0.97 0.98 0.99 1.03 1.18 1.37 1.61 1.89 2.24 2.60 3.09
0.90 0.91 0.92 0.93 0.94 0.95 0.99 1.13 1.31 1.55 1.83 2.13 2.47 2.93
0.86 0.87 0.88 0.89 0.89 0.90 0.94 1.08 1.25 1.46 1.72 2.03 2.36 2.80
0.83 0.83 0.84 0.85 0.86 0.87 0.90 1.03 1.19 1.40 1.64 1.94 2.25 2.66
0.80 0.81 0.81 0.82 0.83 0.87 0.99 1.14 1.34 1.57 1.86 2.15 2.55
0.78 0.78 0.79 0.80 0.83 0.95 1.10 1.28 1.51 1.78 2.06 2.44
0.75 0.76 0.77 0.80 0.91 1.06 1.23 1.45 1.71 1.98 2.34
0.73 0.74 0.77 0.88 1.02 1.19 1.39 1.65 1.90 2.25
0.71 0.74 0.85 0.98 1.14 1.34 1.58 1.83 2.17
0.72 0.82 0.95 1.10 1.30 1.53 1.77 2.09
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
-5
- 10
Correction factor K∆p
∆p (bar)
K∆p
∆p (bar)
K∆p
Liquid temperature
entering valve
°C
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
8
9
4.25 3.00 2.46 2.13 1.90 1.74 1.61 1.50 1.42 1.35 1.28 1.23 1.18 1.14 1.06 1.00
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
∆p (bar)
K∆p
∆p (bar)
0.95 0.91 0.87 0.83 0.80 0.78 0.75 0.73 0.71 0.69 0.67 0.66 0.64 0.63 0.61 0.60
K∆p
Correction factor Kt
Evaporating temperature °C
Liquid temperature
entering valve
°C
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
R407C
+20
+15
+10
+5
0
-5
-10
-15
-20
-25
1.23 1.26 1.28 1.31 1.34 1.37 1.40 1.63 1.98 2.42
1.13 1.15 1.17 1.19 1.22 1.24 1.27 1.48 1.79 2.18
1.05 1.06 1.08 1.10 1.12 1.14 1.17 1.35 1.64 2.00
0.98 0.99 1.01 1.02 1.04 1.06 1.08 1.25 1.52 1.84
0.92 0.93 0.94 0.96 0.98 0.99 1.01 1.17 1.41 1.71
0.87 0.88 0.89 0.90 0.92 0.93 0.95 1.10 1.32 1.60
0.82 0.83 0.84 0.85 0.87 0.88 0.90 1.03 1.25 1.51
0.78 0.79 0.80 0.81 0.82 0.84 0.85 0.98 1.18 1.43
0.75 0.76 0.77 0.78 0.80 0.81 0.93 1.12 1.35
0.73 0.74 0.75 0.76 0.77 0.89 1.07 1.29
0.71 0.72 0.73 0.74 0.85 1.02 1.23
0.69 0.70 0.71 0.81 0.98 1.18
Correction factor K∆p
∆p (bar)
K∆p
∆p (bar)
K∆p
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
8
9
4.78 3.33 2.72 2.36 2.11 1.92 1.78 1.67 1.57 1.49 1.42 1.36 1.31 1.26 1.18 1.11
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1.05 1.01 0.96 0.92 0.89 0.86 0.83 0.81 0.79 0.76 0.75 0.73 0.71 0.70 0.68 0.67
TX6__35011_EN_R06.doc
9 / 12
∆p (bar)
K∆p
∆p (bar)
K∆p
17.03.2008
TX6
Thermo Expansion Valves
Liquid temperature
entering valve
°C
+ 60
+ 55
+50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
-5
- 10
Correction factor Kt
Evaporating temperature °C
R134a
+20
+ 15
+10
+5
0
-5
-10
-15
-20
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
+ 15
+ 10
+5
0
-5
- 10
-25
1.27 1.30 1.33 1.36 1.40 1.44 1.48 1.75 2.08 2.46
1.18 1.21 1.23 1.26 1.29 1.33 1.36 1.60 1.90 2.25
1.10 1.13 1.15 1.17 1.20 1.23 1.26 1.48 1.76 2.07
1.04 1.06 1.08 1.10 1.12 1.15 1.17 1.38 1.63 1.92
0.98 0.99 1.01 1.03 1.05 1.08 1.10 1.29 1.52 1.79
0.92 0.94 0.96 0.97 0.99 1.01 1.03 1.21 1.43 1.68
0.88 0.89 0.91 0.92 0.94 0.96 0.98 1.14 1.35 1.58
0.83 0.85 0.86 0.87 0.89 0.91 0.92 1.08 1.27 1.49
0.80 0.81 0.82 0.83 0.85 0.89 0.88 1.02 1.21 1.41
0.77 0.78 0.79 0.81 0.82 0.84 0.97 1.15 1.34
0.75 0.76 0.77 0.78 0.80 0.93 1.09 1.28
0.73 0.74 0.75 0.76 0.89 1.04 1.22
0.71 0.72 0.73 0.85 1.00 1.17
0.69 0.70 0.82 0.96 1.12
0.68 0.79 0.92 1.07
Correction factor K∆p
∆p (bar)
K∆p
∆p (bar)
K∆p
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
3.50 2.48 2.02 1.75 1.57 1.43 1.32 1.24 1.17 1.11 1.06 1.01 0.97 0.94 0.90 0.88
8.5
9
9.5
10
10.5
11
11.5
12
13
14
15
16
17
18
19
20
∆p (bar)
K∆p
∆p (bar)
0.85 0.83 0.80 0.78 0.76 0.75 0.73 0.72 0.69 0.66 0.64 0.62 0.60 0.58 0.57 0.55
K∆p
Correction factor Kt
Evaporating temperature °C
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
Liquid temperature
entering valve
°C
+ 60
+ 55
+ 50
+ 45
+ 40
+ 35
+ 30
+ 25
+ 20
R410A
+ 15
+10
+5
0
-5
-10
-15
-20
-25
-30
-35
-40
1,50 1,51 1,53 1,54 1,57 1,59 1,85 2,16 2,55 3,03 3,64 4,42
1,32 1,33 1,35 1,36 1,38 1,40 1,62 1,89 2,23 2,65 3,17 3,84
1,20 1,20 1,21 1,23 1,24 1,26 1,46 1,70 2,00 2,37 2,83 3,42
1,09 1,10 1,11 1,12 1,13 1,15 1,33 1,55 1,82 2,15 2,57 3,10
1,01 1,02 1,03 1,04 1,05 1,06 1,22 1,43 1,67 1,98 2,36 2,84
0,94 0,95 0,96 0,97 0,98 0,99 1,14 1,32 1,55 1,83 2,18 2,63
0,89 0,89 0,90 0,91 0,91 0,92 1,06 1,24 1,45 1,71 2,04 2,45
0,84 0,84 0,85 0,85 0,86 0,87 1,00 1,16 1,36 1,61 1,91 2,30
0,79 0,80 0,80 0,81 0,81 0,82 0,95 1,10 1,28 1,51 1,80 2,16
Correction factor K∆p
∆p (bar)
K∆p
∆p (bar)
K∆p
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
8
9
5,29 3,74 3,05 2,65 2,37 2,16 2,00 1,87 1,76 1,67 1,60 1,53 1,47 1,41 1,32 1,25
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1,18 1,13 1,08 1,04 1,00 0,97 0,94 0,91 0,88 0,86 0,84 0,82 0,80 0,78 0,76 0,75
TX6__35011_EN_R06.doc
10 / 12
∆p (bar)
K∆p
∆p (bar)
K∆p
17.03.2008
TX6
Thermo Expansion Valves
Technical data
Maximum working pressure
TX6-H/M/N.. PS: 31 bar
TX6-Z12/13/14/15/16/17 PS: 42 bar
Compatibility
CFC, HCFC, HFC. Mineral
and POE lubricants.
Fluid group
II
Medium temperature range TS -45 to 65°C
Charges
CFC free
Charge
Refrigerant
N0
H0
M0
N1. MOP 6.9 bar
H1. MOP 6.9 bar
M1. MOP 3.8 bar
Z1 MOP 12.1 bar
R 407C
R 22
R 134a
R 407C
R 22
R 134a
R 410A
CE-Marking
according to PED:
Not required
Seat leakage
≤ 1% nominal capacity
Connection
Power element
Label
ODF copper
Laser welding, stainless steel
Pin printing
Recommended evaporating
temperature range
°C
-25 to +20
-45 to +20
-25 to +30
-25 to +14
-45 to +12
-25 to +10
-45 to +14
Maximum bulb temperature
°C
71
71
88
120
120
120
120
Shipping weight and pack quantity TX6
Pack quantity
Shipping weight
TX6__35011_EN_R06.doc
12 pcs
0.65 kg
(individual)
11 / 12
17.03.2008
TX6
Thermo Expansion Valves
Dimensions
TX6-….2/3
TX6-….4/5/6/
127
127
102
A1
A2
111
B1
A1
B2
A2
B1
B2
A3
64
A3
B3
64
B3
64
Type
TX6-…2
TX6-…3
TX6-…4
TX6-…5
TX6-…6
TX6-…7
A1
∅
1/2” & 12 mm
1/2” & 12 mm
5/8” & 16 mm
5/8” & 16 mm
7/8” & 22 mm
7/8” & 22 mm
B1
mm
9
9
13
13
19
19
A2
∅
5/8” & 16 mm
5/8” & 16 mm
7/8” & 22 mm
7/8” & 22 mm
1-1/8” & 28 mm
1-1/8” & 28 mm
64
B2
mm
13
13
19
19
23
23
A3
∅
1/4” & 6 mm
1/4” & 6 mm
1/4” & 6 mm
1/4” & 6 mm
1/4” & 6 mm
1/4” & 6 mm
ALCO CONTROLS is not to be held responsible for erroneous literature
regarding capacities, dimensions, applications, etc. stated herein.
Products, specifications and data in this literature are subject to change
without notice. The information given herein is based on technical data
and tests which ALCO CONTROLS believes to be reliable and which
are in compliance with technical knowledge of today. It is intended only
Emerson Electric GmbH & Co. OHG
ALCO CONTROLS
Heerstraße 111
D-71332 Waiblingen
Germany
Phone ...49-(0)7151-509-0
Fax ...49-(0)7151-509-200
www.eCopeland.com/alcoliterature.cfm
TX6__35011_EN_R06.doc
B3
mm
Capillary tube
mm
8
1500
Bulb size
Diameter
Length
mm
mm
13
(R410A:
19,2)
89
(R410A:
59)
for use by persons having the appropriate technical knowledge and
skills, at their own discretion and risk. Since conditions of use are
outside of ALCO'S control we can not assume any liability for results
obtained or damages occurred due to improper application.
This document replaces all earlier versions.
Benelux
Denmark & Finland
Eastern Europe, Turkey & Iran
France, Greece, Maghreb
Deutschland, Österreich, Schweiz
Italia
Middle East & Africa
Poland
Russia & Cis
España & Portugal
Sweden & Norway
UK & Ireland
12 / 12
Phone.:
+31 (0)773 240 234
+32 (0)87 305 565
+32 (0)87 305 061
+33 (0)478 668 570
+49 (0)6109 6059 0
+39 02 961 78 1
+97 148 832 828
+48 (0)22 458 9205
+7 495 981 9811
+34 93 4 123 752
+32 (0)87 305 565
+44 (0)1 189 838 000
Fax:
+31 (0)773 240 235
+49 24 08 929 568
+32 (0)87 305 506
+33 (0)478 668 571
+49 (0)6109 6059 40
+39 02 961 78 888
+97 148 832 848
+48 (0)22 458 9255
+7 495 981 9816
+34 93 4 124 215
+49 24 08 929 568
+44 (0)1 189 838 001
17.03.2008
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