Danfoss TGE 10, TGE 20, TGE 40, TGE Data sheet

Data Sheet

Thermostatic expansion valves Type TGE

The TGE series of thermostatic expansion valves have balanced port design

TGE is a dedicated designed series of thermostatic expansion valves for all standard refrigerants.

The tight design meets the environmental demands for today and future. Versions for non standard refrigerants can be produced to order.

Applications

• Water chillers

• Bus A/C

• Rooftop units

• Heat pumps

• Refrigerated containers

• Others A/C and refrigeration system

AI246186497192en-001001

Thermostatic expansion valves, Type TGE

Features

• Refrigerants: R410A, R32, R452B, R454B, R22, R134a, R1234ze, R407F, R407A, R404A, R507, R407C and R290

• Capacity range: 3.5 – 52 TR / 12 – 182 kW for R410A

• Balance port design

• Biow with expansion in both directions

• Low hysteresis

• Long lifetime for heat pump applications

• Mechanical connections types solder ODF, are, MIO, ORFS are available

• Laser welded, stainless steel power element, capillary tube, and bulb

• MOP (Max. Operating Pressure) function is available

• Optional bleed function

• PS / MWP (maximum working pressure): 49 bar/ 711 psig

• Straightway ow

• Adjustable superheat setting

• UL certied

Danfoss 67N47.10

1

2 3

4

7

8

5

6

1

2 3

4

5

6

7

8

1234567

8

Bulb with capillary tube

Thermostatic element

Thrust pad

Push pin seal

Cone

Valve body

Static SH adjustment spindle

Protective cap

Thermostatic expansion valves, Type TGE

Functions

Figure 1: Balanced port design TGE 10

Figure 2: Double balanced port design TGE 20 and TGE 40

Balanced port design and advantage

The TGE series of thermostatic expansion valves have balanced port design.

Balanced port design prevents changes in pressure drop across the valve from inuencing operation and provides excellent control on applications having widely varying operating conditions.

Balanced port TXV’s are recommended in refrigeration and air conditioning systems with any combinations of these conditions:

1.

Widely varying head pressures

2.

Widely varying evaporator loads

3.

Widely varying pressure drop across the TXV

4.

Fluctuating or extremely low liquid temperatures

5.

Intermittent liquid line ash gas

TGE valves are designed for biow operations. TGE 10 has minor capacity reduction in reverse ow.

Thermostatic expansion valves, Type TGE

The central push pin is tted with a robust seal (Pos 4) that ensures maximum tightness for the life of the valve.

Static superheat (SS) can be adjusted by the setting spindle (Pos 7), see Figure 1: Balanced port design TGE 10 & .Figure 2: Double balanced port design TGE 20 and TGE 40

The standard superheat setting (SS) is 4K / 7.2 °F and adjustable for 0 – 8K / 0 – 14.4 °F.

SS = Static Superheat

OS = Opening Superheat

SH = SS + OS = total superheat

Example:

Static superheat SS = 4K / 7.2 °F

Opening superheat OS = 4K / 7.2 °F

The opening superheat is 4K / 7.2 °F, i.e. from the point the valve begins to open up to rated capacity. Opening superheat is determined by the design and cannot be changed.

Total superheat SH = SS + OS

SH = 4 + 4 = 8K / 14.4 °F

Total superheat SH can be altered by changing SS (by using the setting spindle).

TGE

Outdoor coil

EVR

SGI/SGN

DCL/DML

Danfoss

67N13.12

Indoor coil

STF

Outdoor coil

TGE

NRV

SGI/SGN

DCB/DMB

TGE

NRV

Thermostatic expansion valves, Type TGE

Applications

Figure 3: A diagram of a traditional refrigeration plant where TGE is used for ow in one direction only.

Figure 4: A conventional split heat pump system shown in cooling mode. This system has two TGE thermostatic expansion valves with xed direction ow. An NRV check valve is placed in series with each TGE to allow liquid refrigerant to bypass when ow is opposite the TXV xed direction

Danfoss

67N27.11

Indoor coil

STF

Outdoor coil

DML/DCL

TGE

Thermostatic expansion valves, Type TGE

Figure 5: A heat pump system similar to that in g. 4 but with a more compact design, where the distance between evaporator and condenser is very short. This system has only one bi–ow TGE valve metering liquid refrigerant eectively in both directions. Changeover is by means of a 4–way valve. A suction lter drier is often placed in suction lines just before the compressor. The normal ow direction of TGE is determined by the primary function, i.e. cooling or heating

Charge

Temperature range

MAH

-30 – 15 °C / -22 – 60 °F

N

-40 – 10 °C / -40 –50 °F without MOP

K

–25 – 10 °C, MOP 15 °C / –15 – 50 °F, MOP 60 °F

Refrigerant Range K: –25 – 10 °C / –15 – 50 °F, MOP +15 °C / +60 °F

MOP point in evaporating pressure pe

R410A

11.4 bar / 165 psig

R22

6.9 bar / 100 psig

R134a

3.8 bar / 55 psig

R407C

6.6 bar / 95 psig

R404A/ R507

8.3 bar / 120 psig

Type

Inlet solder ODF

[inch]

Inlet solder ODF

[mm]

Outlet solder ODF

[inch]

Outlet solder ODF [mm]

TGE 10

3

⁄8

,

1

⁄2, 5⁄8, 7⁄8

10, 12, 16, 22

5

⁄8

,

7

⁄8, 11⁄8

16, 22, 28

TGE 20

5

⁄8

,

7

⁄8 , 11⁄8

16, 22, 28

5

⁄8

,

7

⁄8 , 11⁄8 , 13⁄8

16, 22, 28, 35

TGE 40

7

⁄8

,

11

⁄8

22, 28

7

⁄8

,

11

⁄8 , 13⁄8

22, 28, 35

Type

Capillary tube length

TGE 10 / TGE 20

1.5 m

59 inch

TGE 40

3 m

118 inch

Thermostatic expansion valves, Type TGE

Product specication

Technical data

Max. temperature on thermostatic element:

MAH : 150 °C / 302 °F K : 150 °C / 302 °F N: 100 °C / 210 °F

Max. temperature on valve body: 110 °C / 230 °F

Max. working pressure: 49 bar / 711 psig.

Max. test pressure: 54 bar / 783 psig.

Table 1: Standard evaporating temperature ranges

Table 2: Max. operating pressure

 NOTE:

MOP for R32, R452B, R454B, R1234ze, R407F, R407A and R290, please contact Danfoss for more info.

Table 3: Connections

Table 4: Capillary tube length

Valve options

In addition to the standard programme, variants of following options may be available:

• Refrigerants

• Evaporating temperature range

• MOP point

• Static superheat setting (0K – 8K / 0 – 14.4 °F)

• Mechanical connections

• Bleed function (15% or 30%)

 NOTE:

Please contact your nearest Danfoss sales oce to discuss valve options.

Refrigerants

Refrigerants: R410A, R32, R452B, R454B, R22, R134a, R1234ze, R407F, R407A, R404A, R507, R407C and R290.