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REFRIGERATION AND AIR CONDITIONING Thermostatic Expansion valves, type TUA/TUAE Technical leaflet

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Page 1: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

REFRIGERATION AND AIR CONDITIONING

Thermostatic Expansion valves,type TUA/TUAE

Technical leafl et

Page 2: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

2 RD1AC502 © Danfoss A/S (RC-CMS / HBS), 02 - 2004

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

Contents Page

Introduction .................................................................................................................................................................................3

Features .........................................................................................................................................................................................3

Standard range ...........................................................................................................................................................................3

Technical data .............................................................................................................................................................................4

MOP valves ...................................................................................................................................................................................4

Identification ...............................................................................................................................................................................4

Ordering ........................................................................................................................................................................................5

Capacity - R22 ..............................................................................................................................................................................7

Capacity - R134a .........................................................................................................................................................................9

Capacity - R404A/R507 ......................................................................................................................................................... 10

Capacity - R407C ..................................................................................................................................................................... 12

Capacity - R410A ..................................................................................................................................................................... 14

Design/Function ..................................................................................................................................................................... 15

Dimensions and weight ....................................................................................................................................................... 15

Page 3: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

© Danfoss A/S (RC-CMS / HBS), 02 - 2004 RD1AC502 3

Introduction TUA/TUAE valves are made of stainless steel and are therefore very suitable for refrigeration systems in the food industry.

TUA/TUAE valves are available with interchangeable orifice assembly in straightway versions.

TUA/TUAE has been specially developed for soldering into hermetic refrigeration systems.

TUA/TUAE valves can be used in many different forms of refrigeration systems, for example:

Traditional refrigeration systems

Heat pump systems

Air conditioning units

Refrigeration appliances

Liquid coolers

Ice cube machines

Mobile refrigeration systems

Features - high connection strength and tightness - capillary tube joints of high strength and vibration resistance

Laser-welded, stainless steel thermostatic diaphragm element - optimum function - long diaphragm life - high pressure resistance

Stainless steel double contact bulb - simple and fast installation - good heat transfer from pipe to bulb

Adjustable superheat - accurate setting - adjustable in operation

Available with MOP (Max. Operating Pressure)

Wide range of valves

Interchangeable filter for easy cleaning

Interchangeable orifice assembly designed for: - Easy mounting - Optimized tightness

Bimetal connections - Simple, fast soldering without the need for wet cloth or refrigeration pliers.

Refrigerants R22, R134a, R404A, R407C, R507, and future refrigerants

Capacities from 0.6 to 16 kW (0.17 to 4.5 TR) for R22 - Large capacity range in small steps

Stable regulation

Biflow function

Compact design - small dimensions and low weight

Stainless steel, solder version

The standard range can be supplied in the following versions:Range N –40 to +10°C, without MOPRange N −40 to +10°C, MOP +15°CRange NM −40 to − 5°C, MOP 0°CRange B −60 to −25°C, without MOPRange B −60 to −25°C, MOP −20°CValves for special temperature ranges can be supplied.

Static superheat (SS) (R22, R134a, R404A and R407C):Valves without MOP 5 KValves with MOP 4 K

Standard range Static superheat (SS) (R507):Valves without MOP 6.4 KValves with MOP 5.4 K

Capillary tube length 1.5 m

Connections:Inlet 1/4 in./6 mm 3/8 in./10 mmOutlet 1/2 in./12 m

Page 4: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

4 RD1AC502 © Danfoss A/S (RC-CMS / HBS), 02 - 2004

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

MOP-points

When MOP valves are used, to avoid charge migration the bulb temperature must always be lower than the thermostatic element temperature.

MOP valves

Max. bulb temperature 100°C

Max. valve body temp. 120°C, short-lived peak 150°C

Permissibleworking pressure PS = 34 bar

Max. test pressure p’ = 37.5 bar

Biflow operationWith flow in the opposite direction, the rated capacity is reduced by up to 15%.TUAE with orifice 9, TUA valves (internal equalisation) and valves with MOP cannot be used for biflow operation.

Technical data

Main valve data is given on the element (fig. 1), on the valve body (fig. 2) and on the bottom of the orifice assembly (fig. 3).

Example valve bodyTUAE = Type (E = external pressure equalisation)068U2214 = Code numberR134a = RefrigerantMOP 55 / +15°C = MOP-point in psig / °C−40 / +10°C = Evaporating temperature range in °C−40 / +50°F = Evaporating temperature range in °FPS 34 bar/ MWP 500 psig = Max. working pressure in bar/psig104B = Date marking (week 10, year 2004, weekday B = Tuesday)⇒ = Normal flow directionin. = Connection in inches (mm = millimetres)

Example orifice assemblyTU = Valve type5 = Orifice number068U1035 = Code no., orifice assembly incl. filter and gasket104 = Date marking (Week 10, Year 2004)

Identification

Fig. 1 Power element

Fig. 2 Valve body

Fig. 3 Orifice assembly

Refrigerant

Range N−40 → +10°C

Range NM−40 → −5°C

Range B−60 → −25°C

MOP point for evaporating temperature te and evaporating pressure pe1)

te = +15°C/+60°F te = 0°C/+32°F te = −20°C/−4°F

R22 pe = 100 psig/6.9 bar pe = 60 psig/4.0 bar pe = 20 psig/1.5 bar

R134a pe = 55 psig/3.9 bar pe = 30 psig/1.9 bar

R404A/R507 pe = 120 psig/8.4 bar pe = 75 psig/5.0 bar pe = 30 psig/2.0 bar

R407C pe = 95 psig/6.6 bar pe = 50 psig/3.6bar pe = 20 psig/1.4 bar

1) pe in bar gauge

Page 5: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

© Danfoss A/S (RC-CMS / HBS), 02 - 2004 RD1AC502 5

Ordering, components with solder x solder connections

Thermostatic element, without orifice and filter, with bulb strap

Refrigerant Valve typePressure

equalization1)

Capillary tubeConnections Code no.

Inlet x outletRange N

–40 → +10°CRange NM

–40 → –5°CRange B

–60→ –25°C

m in. mm Without MOP MOP +15 °C MOP 0 °C Without MOP MOP –20°C

R22

TUATUATUATUA

Int.Int.Int.Int.

1.51.51.51.5

1/4 x 1/2

3/8 x 1/2

6 x 12

10 x 12

068U2234068U2230068U2235068U2231

068U2242068U2238068U2243068U2239

TUAETUAETUAETUAE

Ext. 1/4 in.Ext. 6 mmExt. 1/4 in.Ext. 6 mm

1.51.51.51.5

1/4 x 1/2

3/8 x 1/2

6 x 12

10 x 12

068U2236068U2232068U2237068U2233

068U2244068U2240068U2245068U2241

R134a

TUATUATUATUA

Int.Int.Int.Int.

1.51.51.51.5

1/4 x 1/2

3/8 x 1/2

6 x 12

10 x 12

068U2204068U2200068U2205068U2201

068U2212068U2208068U2213068U2209

TUAETUAETUAETUAE

Ext. 1/4 in.Ext. 6 mmExt. 1/4 in.Ext. 6 mm

1.51.51.51.5

1/4 x 1/2

3/8 x 1/2

6 x 12

10 x12

068U2206068U2202068U2207068U2203

068U2214068U2210068U2215068U2211

R404AR507

TUATUATUATUA

Int.Int.Int.Int.

1.51.51.51.5

1/4 x 1/2

3/8 x 1/2

6 x 12

10 x 12

068U2284068U2280068U2285068U2281

068U2292068U2288068U2293068U2289

068U2300068U2296068U2301068U2297

068U2308068U2304068U2309068U2305

068U2316068U2312068U2317068U2313

TUAETUAETUAETUAE

Ext. 1/4 in.Ext. 6 mmExt. 1/4 in.Ext. 6 mm

1.51.51.51.5

1/4 x 1/2

3/8 x 1/2

6 x 12

10 x 12

068U2286068U2282068U2287068U2283

068U2294068U2290068U2295068U2291

068U2302068U2298068U2303068U2299

068U2310068U2306068U2311068U2307

068U2318068U2314068U2319068U2315

R407C

TUATUATUATUA

Int.Int.Int.Int.

1.51.51.51.5

1/4 x 1/2

3/8 x 1/2

6 x 12

10 x 12

068U2324068U2320068U2325068U2321

068U2332068U2328068U2333068U2329

TUAETUAETUAETUAE

Ext. 1/4 in.Ext. 6 mmExt. 1/4 in.Ext. 6 mm

1.51.51.51.5

1/4 x 1/2

3/8 x 1/2

6 x 12

10 x 12

068U2326068U2322068U2327068U2323

068U2334068U2330068U2335068U2331

R22, R134a, R404A, R407C, R507

Page 6: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

6 RD1AC502 © Danfoss A/S (RC-CMS / HBS), 02 - 2004

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

1) Rated capacity Qnom. is based on: Evaporating temperature te = +5°C for range N and – 30°C for

range B Condensing temperature tc = +32°C Refrigerant liquid temperature tl = +28°C Opening superheat OS = 4 K

Ordering (continued)

Spare partsGasket (24 pcs.): 068U0015Note: to ensure tightness the orifice gasket must be exchanged each time the orifice assembly is unscrewed.Filter (24 pcs.): 068U0016

Range B: –60 → –25°C

Orifice assembly with filter and gasket. Range N: –40 → +10°C

Orifice no.Rated capacity in kW1) Rated capacity in tons (TR)1)

Code no.R22 R134a R404A R407C R507 R22 R134a R404A R407C R507

0 0.60 0.47 0.47 0.63 0.45 0.17 0.13 0.13 0.18 0.13 068U1030

1 0.9 0.7 0.70 0.92 0.66 0.25 0.19 0.19 0.26 0.19 068U1031

2 1.3 1.0 1.0 1.4 1.0 0.36 0.28 0.28 0.38 0.27 068U1032

3 1.8 1.4 1.4 1.9 1.3 0.50 0.39 0.39 0.53 0.38 068U1033

4 2.6 2.1 2.1 2.8 2.0 0.75 0.59 0.60 0.80 0.57 068U1034

5 3.5 2.7 2.8 3.8 2.7 1.00 0.78 0.79 1.1 0.76 068U1035

6 5.3 4.1 4.2 5.7 4.0 1.5 1.2 1.2 1.6 1.1 068U1036

7 7.0 5.5 5.6 7.5 5.3 2.0 1.6 1.6 2.1 1.5 068U1037

8 11.0 8.2 8.4 11.0 8.0 3.0 2.3 2.4 3.2 2.3 068U1038

9 16.0 12.0 12.0 17.0 12.0 4.5 3.5 3.5 4.8 3.4 068U1039

Orifice no.

Rated capacity in kW1) Rated capacity in tons (TR)1)

Code no.R22 R404A R407C R507 R22 R404A R407C R507

0 0.52 0.36 0.46 0.39 0.15 0.10 0.13 0.11 068U1030

1 0.68 0.50 0.58 0.53 0.19 0.14 0.16 0.15 068U1031

2 0.85 0.64 0.70 0.70 0.24 0.18 0.20 0.20 068U1032

3 1.2 0.89 1.0 1.0 0.34 0.25 0.28 0.28 068U1033

4 1.8 1.3 1.4 1.4 0.50 0.37 0.41 0.41 068U1034

5 2.3 1.8 1.9 1.9 0.66 0.50 0.55 0.55 068U1035

6 3.5 2.7 2.9 2.9 1.0 0.75 0.82 0.82 068U1036

7 4.7 3.5 3.9 3.9 1.3 1.0 1.1 1.1 068U1037

8 7.1 5.3 5.8 5.8 2.0 1.5 1.6 1.7 068U1038

9 10.4 7.8 8.5 8.6 2.9 2.2 2.4 2.4 068U1039

Page 7: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

© Danfoss A/S (RC-CMS / HBS), 02 - 2004 RD1AC502 7

Capacity

Correction factor for subcooling ∆tsub

Note:Insufficient subcooling can produce flash gas.

Correction for subcooling ∆tsub

The evaporator capacity used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below.

Since the expansion valve capacity must be equal to or slightly more than the corrected evaporator capacity of 2.7 kW, a TUB/TUBE with orifice 5 and a table capacity of 2.8 kW would be a suitable choice.

Refrigerant = R22Evaporating temperature te = −10°CPressure drop in valve ∆p = 10 barSubcooling ∆tsub = 15 KEvaporator capacity = 3 kWCorrection value (table) = 1.11The corrected evaporator capacity thus becomes 3 divided by 1.11 = 2.7 kW

Selection example

R22Capacity in kW for range N = −40 → +10°C and opening superheat OS = 4 K

Valve typeOrifice

no.Pressure drop across valve ∆p bar Pressure drop across valve ∆p bar

2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16

Evaporating temperature +10°C Evaporating temperature 0°C

TU

0123456789

0.420.610.91.21.82.43.74.97.3

10.9

0.530.791.21.62.43.24.96.59.6

14.5

0.600.891.31.82.83.75.67.5

11.216.7

0.651.01.52.03.14.16.18.2

12.218.2

0.681.01.62.13.24.36.58.6

12.919.3

0.701.01.62.23.44.56.79.0

13.420.0

0.711.11.72.33.54.66.99.2

13.720.5

0.721.11.72.33.54.77.19.4

13.920.9

0.400.550.731.01.52.03.14.16.19.1

0.500.711.01.32.02.74.05.48.0

12.1

0.560.801.11.52.33.14.66.29.2

13.8

0.600.861.21.72.53.45.06.7

10.115.0

0.630.911.31.82.73.55.37.1

10.615.9

0.650.931.31.82.83.75.57.4

11.016.4

0.670.951.41.92.83.85.77.6

11.316.8

0.670.961.41.92.83.85.87.7

11.517.1

Evaporating temperature –10°C Evaporating temperature –20°C

TU

0123456789

0.360.470.600.81.21.72.53.35.07.4

0.460.620.781.11.62.23.24.36.59.7

0.510.700.891.31.92.53.75.07.5

11.1

0.550.751.01.42.02.74.05.48.1

12.0

0.570.791.01.42.12.84.35.78.5

12.6

0.590.811.11.52.22.94.45.98.8

13.1

0.600.821.11.52.23.04.56.09.0

13.3

0.610.831.11.52.33.04.66.19.1

13.5

0.400.510.610.91.31.72.53.45.17.6

0.450.570.701.01.51.92.93.95.88.6

0.480.620.761.11.62.13.14.26.39.3

0.500.650.791.11.62.23.34.46.69.7

0.520.670.821.21.72.33.44.56.8

10.1

0.530.680.841.21.72.33.54.67.0

10.3

0.530.690.851.21.82.33.54.77.1

10.4

Evaporating temperature –30°C Evaporating temperature –40°C

TU

0123456789

0.340.390.470.661.01.31.92.63.95.7

0.380.450.530.741.11.52.22.94.46.5

0.400.480.570.801.21.62.43.24.87.0

0.420.510.600.841.21.72.53.35.07.3

0.440.520.620.871.31.72.53.45.17.5

0.440.530.630.881.31.72.63.55.27.7

0.450.540.630.891.31.82.63.55.37.7

0.310.330.390.550.801.11.62.13.24.7

0.330.360.420.590.861.21.72.33.55.1

0.340.380.440.610.901.21.82.43.65.3

0.350.390.450.630.921.21.82.53.75.5

0.360.390.460.640.941.31.92.53.85.5

0.360.400.460.650.951.31.92.53.85.6

∆tsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K

Correction factor

1.00 1.06 1.11 1.15 1.2 1.25 1.3 1.35 1.39 1.44

Page 8: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

8 RD1AC502 © Danfoss A/S (RC-CMS / HBS), 02 - 2004

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

Capacity (continued)

Capacity in kW for range B = −60 → −25°C and opening superheat OS = 4 K R22Valve type

Orificeno.

Pressure drop across valve ∆p bar Pressure drop across valve ∆p bar

2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16

Evaporating temperature –25°C Evaporating temperature –30°C

TU

0123456789

0.360.480.610.851.31.72.53.45.17.6

0.450.620.791.101.62.23.34.46.69.7

0.500.690.891.251.92.53.75.07.5

11.0

0.540.740.961.342.02.74.05.48.0

11.9

0.560.771.011.412.12.84.25.68.4

12.4

0.580.791.041.452.12.94.35.88.7

12.8

0.590.811.061.482.22.94.45.98.9

13.1

0.590.811.071.502.23.04.56.08.9

13.2

0.330.420.520.731.11.42.12.94.36.4

0.420.540.670.931.41.92.83.75.68.2

0.460.610.751.11.62.13.14.26.39.3

0.490.660.811.11.72.23.44.56.8

10.0

0.520.680.851.21.82.43.54.77.1

10.4

0.530.700.881.21.82.43.64.97.3

10.7

0.540.710.891.31.82.53.74.97.4

10.9

0.540.720.901.31.92.53.75.07.5

11.0

Evaporating temperature –40°C Evaporating temperature –50°C

TU

0123456789

0.270.310.360.510.751.01.52.03.04.5

0.340.390.460.650.961.31.92.63.95.7

0.370.440.520.731.11.42.22.94.46.4

0.400.470.560.791.21.62.33.14.76.8

0.420.500.590.821.21.62.43.24.97.1

0.430.510.600.851.21.72.53.35.07.3

0.430.520.610.861.31.72.53.45.17.5

0.440.520.620.871.31.72.63.45.27.5

0.200.210.250.350.510.681.01.42.13.0

0.250.270.310.440.650.871.31.72.63.8

0.280.300.350.500.720.971.41.92.94.3

0.300.320.380.530.771.01.52.13.14.6

0.310.340.390.550.811.11.62.23.34.8

0.320.350.400.570.831.11.72.23.44.9

0.330.350.410.580.841.11.72.33.45.0

0.330.350.410.580.851.11.72.33.45.0

Evaporating temperature –60°C

TU

0123456789

0.140.140.160.230.340.450.670.911.42.0

0.170.180.210.290.430.570.851.11.72.5

0.190.200.230.330.480.640.951.31.92.8

0.210.220.250.350.510.681.011.42.13.0

0.210.220.260.360.530.711.051.42.13.1

0.220.230.260.370.540.731.081.52.23.2

0.220.230.270.380.550.741.091.52.23.2

0.220.230.270.380.550.741.101.52.23.2

Correction factor for subcooling ∆tsub

Note:Insufficient subcooling can produce flash gas.

Correction for subcooling ∆tsub

The evaporator capacity used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below.

∆tsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K

Correction factor

1.00 1.06 1.11 1.15 1.2 1.25 1.3 1.35 1.39 1.44

Page 9: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

© Danfoss A/S (RC-CMS / HBS), 02 - 2004 RD1AC502 9

Capacity (continued)

Correction factor for subcooling ∆tsub

Note:Insufficient subcooling can produce flash gas.

Correction for subcooling ∆tsub

The evaporator capacity used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below.

∆tsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K

Correction factor

1.00 1.08 1.13 1.19 1.25 1.31 1.37 1.42 1.48 1.54

Capacity in kW for range N = −40 → +10°C and opening superheat OS = 4 K R134aValve type

Orificeno.

Pressure drop across valve ∆p bar Pressure drop across valve ∆p bar

2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16

Evaporating temperature +10°C Evaporating temperature 0°C

TU

0123456789

0.380.570.821.11.72.33.44.66.8

10.2

0.460.691.11.42.22.94.45.98.7

13.1

0.500.761.21.62.53.34.96.69.8

14.6

0.530.791.21.72.63.55.27.0

10.315.5

0.540.811.31.82.73.65.47.2

10.615.9

0.540.811.31.82.73.65.57.2

10.816.0

0.350.500.660.921.41.82.83.75.58.3

0.420.610.841.21.82.33.54.77.0

10.4

0.460.660.931.31.92.63.95.27.8

11.5

0.480.690.981.42.02.74.15.58.2

12.2

0.490.701.01.42.12.84.25.68.4

12.4

0.490.711.01.42.12.84.35.78.5

12.5

Evaporating temperature –10°C Evaporating temperature –20°C

TU

0123456789

0.310.410.510.711.11.42.12.84.36.3

0.370.510.640.891.31.82.73.55.37.9

0.400.550.700.981.52.02.93.95.98.7

0.420.580.741.01.52.13.14.16.29.1

0.430.580.751.11.62.13.14.26.39.3

0.430.580.761.11.62.13.24.26.39.3

0.310.390.470.650.961.31.92.63.95.7

0.340.430.510.721.051.42.12.84.36.2

0.350.440.530.751.101.52.23.04.46.5

0.350.450.540.761.121.52.23.04.56.6

0.350.450.540.761.11.52.23.04.56.6

Evaporating temperature –30°C Evaporating temperature –40°C

TU

0123456789

0.250.280.320.460.670.901.31.82.74.0

0.270.300.350.500.730.981.52.03.04.3

0.280.320.370.520.761.021.52.03.14.5

0.280.320.370.530.771.031.52.13.14.5

0.280.320.370.520.761.01.52.13.14.5

0.180.190.220.310.450.610.901.21.82.7

0.190.210.240.340.490.660.971.32.02.9

0.200.210.250.350.500.681.01.42.13.0

0.200.210.250.350.510.681.01.42.13.0

0.200.210.250.350.510.681.01.42.13.0

Page 10: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

10 RD1AC502 © Danfoss A/S (RC-CMS / HBS), 02 - 2004

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

Capacity (continued)

Correction factor for subcooling ∆tsub

Note:Insufficient subcooling can produce flash gas.

Correction for subcooling ∆tsub

The evaporator capacity used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below.

∆tsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K

Correction factor

1.00 1.1 1.2 1.29 1.37 1.46 1.54 1.63 1.7 1.78

Capacity in kW for range N = −40 → +10°C and opening superheat OS = 4 K R404A/R507Valve type

Orificeno.

Pressure drop across valve ∆p bar Pressure drop across valve ∆p bar

2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16

Evaporating temperature +10°C Evaporating temperature 0°C

TU

0123456789

0.320.470.700.961.52.02.93.95.88.8

0.400.600.911.21.92.53.85.17.5

11.3

0.440.681.01.42.12.84.35.78.4

12.7

0.460.691.11.52.33.04.56.09.0

13.5

0.460.701.11.52.33.14.76.29.2

13.8

0.460.701.11.52.33.14.76.29.2

13.9

0.450.681.11.52.33.14.66.19.1

13.7

0.440.661.11.52.23.04.56.08.9

13.39

0.310.440.600.831.31.72.53.45.07.5

0.390.560.771.11.62.23.24.36.59.6

0.420.610.871.21.82.43.64.87.2

10.8

0.440.640.921.31.92.63.85.17.6

11.4

0.440.640.941.32.02.63.95.27.8

11.7

0.440.640.941.52.02.63.95.37.8

11.7

0.430.630.931.31.92.63.95.27.7

11.5

0.420.610.901.31.92.53.85.07.5

11.2

Evaporating temperature –10°C Evaporating temperature –20°C

TU

0123456789

0.290.390.500.701.01.42.12.84.26.2

0.360.500.640.891.31.82.73.65.37.9

0.390.540.710.991.52.03.04.05.98.8

0.400.570.751.01.62.13.14.26.39.3

0.410.570.761.11.62.13.24.36.49.5

0.410.570.761.11.62.13.24.36.49.5

0.400.560.751.11.62.13.14.26.39.3

0.390.540.731.01.52.03.14.16.19.0

0.320.410.510.711.11.42.12.84.36.3

0.350.460.560.791.21.62.33.14.76.9

0.360.480.590.831.21.62.43.34.97.3

0.360.480.600.841.21.72.53.35.07.4

0.360.480.600.841.21.72.53.35.07.4

0.350.470.590.821.21.62.43.34.97.2

0.340.450.570.801.21.62.43.24.87.0

Evaporating temperature –30°C Evaporating temperature –40°C

TU

0123456789

0.30.360.430.600.891.21.82.43.65.3

0.310.380.450.630.931.21.92.53.75.5

0.310.380.450.640.941.31.92.53.85.5

0.310.380.450.630.931.21.92.53.85.5

0.30.370.440.620.911.21.82.43.75.4

0.290.360.430.600.881.21.82.43.65.2

0.240.270.320.450.650.881.31.82.63.9

0.250.280.330.460.680.911.41.82.74.0

0.250.280.330.470.680.911.41.82.84.0

0.250.280.330.460.670.901.31.82.74.0

0.240.270.320.450.660.881.31.82.73.9

0.230.260.310.430.630.851.31.72.63.7

Page 11: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

© Danfoss A/S (RC-CMS / HBS), 02 - 2004 RD1AC502 11

Capacity (continued)

Correction factor for subcooling ∆tsub

Note:Insufficient subcooling can produce flash gas.

Correction for subcooling ∆tsub

The evaporator capacity used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below.

Capacity in kW for range B = −60 → −25°C and opening superheat OS = 4 K R404A/R507Valve type

Orificeno.

Pressure drop across valve ∆p bar Pressure drop across valve ∆p bar

2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16

Evaporating temperature –25°C Evaporating temperature –30°C

TU

0123456789

0.300.410.530.741.11.52.22.94.46.5

0.360.510.660.921.41.82.83.75.58.2

0.390.550.731.011.52.03.04.16.19.0

0.400.560.761.061.62.13.24.26.39.4

0.400.570.771.071.62.13.24.36.49.5

0.400.560.771.071.62.13.24.36.49.4

0.390.550.751.041.62.13.14.26.39.2

0.380.530.731.011.52.03.04.06.18.9

0.280.360.450.641.01.31.92.53.85.6

0.330.450.570.791.21.62.43.24.77.0

0.360.490.620.871.31.72.63.55.27.7

0.370.510.650.911.31.82.73.65.48.0

0.370.510.650.911.41.82.73.65.58.1

0.370.500.650.911.31.82.73.65.48.0

0.360.480.640.891.31.82.63.55.37.8

0.350.470.610.861.31.72.63.45.17.5

Evaporating temperature –40°C Evaporating temperature –50°C

TU

0123456789

0.280.340.400.570.831.11.72.23.44.9

0.300.370.440.620.911.21.82.43.75.4

0.300.380.450.640.941.31.92.53.85.6

0.310.380.460.640.941.31.92.53.85.6

0.300.380.450.630.931.31.92.53.85.5

0.290.370.440.620.911.21.82.43.75.4

0.280.350.420.590.871.21.82.43.55.2

0.220.240.270.390.570.761.11.52.33.3

0.230.250.300.420.610.821.21.62.53.6

0.240.260.310.430.630.841.31.72.63.7

0.240.260.310.430.630.841.31.72.63.7

0.230.260.300.420.620.831.21.72.53.7

0.220.250.290.410.600.811.21.62.43.5

0.210.240.280.390.570.771.21.52.33.4

Evaporating temperature –60°C

TU

0123456789

0.160.170.190.270.400.530.791.11.62.3

0.160.170.200.280.410.550.811.11.72.4

0.160.170.200.280.410.550.811.11.72.4

0.160.170.190.270.400.530.791.11.62.3

0.150.160.190.260.380.510.761.01.62.3

0.150.150.180.250.360.490.731.01.52.1

∆tsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K

Correction factor

1.00 1.1 1.2 1.29 1.37 1.46 1.54 1.63 1.7 1.78

Page 12: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

12 RD1AC502 © Danfoss A/S (RC-CMS / HBS), 02 - 2004

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

Capacity (continued)

Correction factor for subcooling ∆tsub

Note:Insufficient subcooling can produce flash gas.

Correction for subcooling ∆tsub

The evaporator capacity used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below.

∆tsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K

Correction factor

1.00 1.08 1.14 1.21 1.27 1.33 1.39 1.45 1.51 1.57

Capacity in kW for range N = −40 → +10°C and opening superheat OS = 4 K R407CValve type

Orificeno.

Pressure drop across valve ∆p bar Pressure drop across valve ∆p bar

2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16

Evaporating temperature +10°C Evaporating temperature 0°C

TU

0123456789

0.430.630.901.21.92.53.85.07.5

11.3

0.540.811.21.62.53.35.06.69.9

14.8

0.600.901.41.92.83.85.77.6

11.216.9

0.640.961.52.03.14.16.18.2

12.218.2

0.670.991.52.13.24.26.48.6

12.719.0

0.681.011.62.23.34.46.68.8

13.019.5

0.681.021.62.23.34.46.78.9

13.219.7

0.681.011.62.23.34.46.78.9

13.219.7

0.410.560.81.01.62.13.14.26.39.3

0.510.731.01.42.12.74.15.48.2

12.2

0.560.811.11.52.33.14.66.29.3

13.8

0.600.861.21.72.53.35.06.79.9

14.8

0.620.891.21.72.63.55.26.9

10.415.4

0.630.901.31.82.73.55.37.1

10.615.8

0.630.911.31.82.73.65.47.2

10.715.9

0.630.901.31.82.73.65.47.2

10.715.9

Evaporating temperature –10°C Evaporating temperature –20°C

TU

0123456789

0.370.480.600.841.31.72.53.45.07.5

0.460.620.781.11.62.23.24.36.59.6

0.510.700.881.21.82.43.74.97.4

10.9

0.540.740.941.32.02.63.95.27.9

11.6

0.550.760.981.42.02.74.15.58.2

12.1

0.560.771.001.42.12.84.25.68.4

12.3

0.570.771.011.42.12.84.25.68.4

12.4

0.560.771.011.42.12.84.25.68.4

12.4

0.330.390.470.660.981.31.92.63.95.8

0.400.500.600.841.31.72.53.35.07.4

0.440.560.680.951.41.92.83.75.78.3

0.470.600.721.01.52.03.04.06.08.9

0.480.620.751.11.62.13.14.16.29.2

0.490.630.761.11.62.13.24.26.49.3

0.490.630.771.11.62.13.24.26.49.4

0.490.630.761.11.62.13.24.26.49.3

Evaporating temperature –30°C Evaporating temperature –40°C

TU

0123456789

0.260.380.450.630.931.31.92.53.85.5

0.290.430.500.711.01.42.12.84.26.2

0.310.450.530.751.11.52.23.04.56.5

0.320.470.550.781.11.52.33.14.66.7

0.320.480.560.791.21.62.33.14.76.8

0.320.480.560.791.21.62.33.14.76.9

0.310.470.560.791.21.52.33.14.76.8

0.290.310.360.510.751.01.52.03.04.4

0.310.330.380.540.791.11.62.13.24.7

0.320.340.400.560.811.11.62.23.34.8

0.320.340.400.560.821.11.62.23.34.9

0.320.350.400.560.821.11.62.23.34.9

0.310.340.400.560.821.11.62.23.34.8

Page 13: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

© Danfoss A/S (RC-CMS / HBS), 02 - 2004 RD1AC502 13

Capacity (continued)

Correction factor for subcooling ∆tsub

Note:Insufficient subcooling can produce flash gas.

Correction for subcooling ∆tsub

The evaporator capacity used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below.

∆tsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K

Correction factor

1.00 1.08 1.14 1.21 1.27 1.33 1.39 1.45 1.51 1.57

Capacity in kW for range B = −60 → −25°C and opening superheat OS = 4 K R407CValve type

Orificeno.

Pressure drop across valve ∆p bar Pressure drop across valve ∆p bar

2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16

Evaporating temperature –25°C Evaporating temperature –30°C

TU

0123456789

0.340.430.520.731.11.52.22.94.46.5

0.420.540.670.931.41.82.83.75.68.2

0.460.610.751.01.52.13.14.16.29.2

0.490.650.791.11.62.23.34.46.69.7

0.500.660.821.21.72.33.44.56.8

10.1

0.510.670.831.21.72.33.54.67.0

10.2

0.510.670.841.21.72.33.54.67.0

10.3

0.500.670.831.21.72.33.54.66.9

10.2

0.310.370.450.620.921.21.82.53.75.5

0.380.470.560.791.21.62.33.14.76.9

0.420.520.630.881.31.72.63.55.37.7

0.440.560.670.941.41.82.83.75.68.2

0.450.570.690.971.41.92.93.85.88.4

0.460.580.700.981.41.92.93.95.88.6

0.460.590.700.981.51.92.93.95.98.6

0.460.580.700.981.41.92.93.95.88.5

Evaporating temperature –40°C Evaporating temperature –50°C

TU

0123456789

0.240.270.310.440.650.861.31.72.63.8

0.300.340.390.550.811.11.62.23.34.8

0.330.370.440.610.901.21.82.43.65.3

0.350.390.460.650.951.31.92.53.95.6

0.360.410.470.670.981.32.02.64.05.8

0.360.410.480.680.991.32.02.74.05.8

0.360.410.480.680.991.32.02.74.05.8

0.360.410.480.670.981.32.02.64.05.8

0.170.180.210.300.440.590.871.21.82.6

0.220.230.270.370.550.731.11.52.23.2

0.240.250.290.410.600.811.21.62.43.5

0.250.270.310.440.630.851.31.72.63.7

0.260.270.320.450.650.881.31.72.63.8

0.260.280.320.450.660.881.31.82.73.9

0.260.280.320.450.660.881.31.82.73.9

0.260.270.320.450.650.871.31.72.63.8

Evaporating temperature –60°C

TU

0123456789

0.120.120.140.200.290.390.580.781.21.7

0.150.150.170.250.360.480.710.961.52.1

0.160.170.190.270.390.530.791.11.62.3

0.180.180.200.290.410.560.831.11.72.4

0.170.180.210.290.420.570.851.11.72.5

0.170.180.210.290.430.570.851.11.72.5

0.170.180.210.290.420.570.851.11.72.5

0.170.180.200.290.420.560.831.11.72.5

Page 14: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

14 RD1AC502 © Danfoss A/S (RC-CMS / HBS), 02 - 2004

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

Correction factor for subcooling ∆tsub

Note:Insufficient subcooling can produce flash gas.

Correction for subcooling ∆tsub

The evaporator capacity used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by dividing the evaporator capacity by the correction factor given below.

∆tsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K

Correction factor

1.00 1.08 1.15 1.21 1.27 1.33 1.39 1.45 1.50 1.56

Capacity (continued)

Capacity in kW for range N = −40 → +10°C and opening superheat OS = 4 K R410AValve type

Orificeno.

Pressure drop across valve ∆p bar Pressure drop across valve ∆p bar

3 6 9 12 15 18 21 24 3 6 9 12 15 18 21 24

Evaporating temperature +10°C Evaporating temperature 0°C

TU

0123456789

0.560.891.451.983.14.16.28.2

12.118.3

0.721.131.902.64.15.38.1

10.715.824.0

0.801.262.23.04.66.19.2

12.718.027.2

0.851.302.33.24.96.59.9

13.119.329.1

0.871.372.43.35.16.7

10.313.620.030.2

0.881.382.53.35.26.8

10.513.820.330.6

0.871.362.43.35.16.8

10.413.820.230.5

0.851.332.43.35.06.7

10.213.519.929.9

0.560.841.251.722.63.55.37.0

10.415.7

0.701.061.642.33.54.66.99.2

13.720.5

0.781.181.862.63.95.27.9

10.415.523.3

0.831.241.992.74.25.68.4

11.116.624.9

0.851.292.12.94.35.88.7

11.617.225.8

0.861.302.12.94.45.98.9

11.817.526.2

0.851.292.12.94.45.88.9

11.817.526.2

0.841.272.12.94.35.88.8

11.617.225.7

Evaporating temperature –10°C Evaporating temperature –20°C

TU

0123456789

0.530.761.041.442.22.94.35.88.6

12.9

0.670.961.351.862.83.75.67.5

11.216.8

0.741.071.522.13.24.26.48.5

12.719.0

0.781.131.632.33.44.56.89.1

13.620.3

0.801.161.692.33.54.77.19.4

14.121.0

0.811.171.722.43.64.87.29.6

14.321.3

0.811.171.722.43.64.87.29.6

14.321.3

0.791.151.702.43.54.87.19.5

14.121.0

0.600.831.061.482.23.04.45.98.9

13.2

0.670.921.201.672.53.35.06.6

10.014.8

0.700.971.281.782.73.55.37.1

10.715.8

0.721.001.321.842.73.75.57.4

11.016.4

0.731.011.341.872.83.75.67.5

11.216.6

0.731.001.341.872.83.75.67.5

11.216.6

0.720.991.331.852.83.75.57.4

11.116.4

Evaporating temperature –30°C Evaporating temperature –40°C

TU

0123456789

0.520.660.811.131.672.23.34.56.79.9

0.580.740.901.271.872.53.75.07.6

11.1

0.610.790.961.352.02.74.05.48.0

11.8

0.630.821.001.402.12.84.15.58.3

12.2

0.630.821.011.412.12.84.25.68.4

12.4

0.630.821.011.412.12.84.25.68.4

12.4

0.620.811.001.402.12.84.15.58.3

12.2

0.480.560.660.931.361.822.73.65.58.1

0.500.590.700.981.451.92.93.95.88.6

0.520.610.721.021.492.03.04.06.08.8

0.520.620.731.031.512.03.04.06.18.9

0.520.620.731.031.502.03.04.06.18.9

0.510.610.721.011.482.03.04.06.08.8

Page 15: Thermostatic Expansion valves, type TUA/TUAE · Technical leaflet Thermostatic expansion valves, type TUA/TUAE Contents Page ... Laser-welded, stainless steel thermostatic diaphragm

Technical leaflet Thermostatic expansion valves, type TUA/TUAE

© Danfoss A/S (RC-CMS / HBS), 02 - 2004 RD1AC502 15

Connection dimensions, see ordering tableFig. 6. Straightway

Weight0,16 kg

Dimensions and weight

Design/Function

1. Bulb with capillary tube2. Thermostatic element with

diaphragm3. Setting spindle for adjustment of

static superheat SS4. Orifice assembly5. Filter

Fig. 5. Superheat

SuperheatSee fig. 5SS = static superheatOS = opening superheatSH = SS + OS = total superheatQnom = rated capacityQmax = maximum capacity

Static superheat SS can be adjusted with setting spindle 3, see fig. 4.

The standard superheat setting SS is 5 K for valves without MOP and 4 K for valves with MOP (except R507).The opening superheat OS is 4 K from when opening begins to where the valve gives its rated capacity Qnom..

ExampleStatic superheat SS = 5 KOpening superheat OS = 4 KTotal superheat SH = 5 + 4 = 9 K

Fig. 4

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16 RD1AC502 © Danfoss A/S (RC-CMS / HBS), 02 - 2004

Technical leaflet Thermostatic expansion valves, type TUA/TUAE