ITER CRYOGENIC SYSTEM ICEC-2014 LHe PLANTS PARALLEL OPERATION

LHe PLANTS – PARALLEL OPERATION

ITER Organization

ITER CRYOGENIC SYSTEM ICEC-2014

The views and opinions expressed herein do not necessarily reflect those of the ITER Organization.

SUMMARY

1. LHe Plants: Schedule

•

Project Overall Schedule

•

Project Status

2. LHe Plants: Lay-Out

•

Cryoplant Building

•

Main Dimensions

3. LHe Plants: Main Characteristics

•

Cooling Power

•

Compressor Stations

•

Cold Boxes

4. LHe Plants: Process

•

Control Philosophy

• Project Overall Schedule

• Project Status

1. LHe PLANTS: SCHEDULE

6 years

ASSEMBLY

PRELIM.

FINAL DESIGN

10 months

12 Months

24 Months

INSTALLATION

15 Months

COMMISSIONING

22 Months

18 Months

PROCUREMENTS

Dec. 2012

Dec. 2018

• Cryoplant Building

• Main Dimensions

2. LHe PLANTS: LAY-OUT

•

CRYOPLANT BUILDING:

120 m x 45 m

•

Compressor Station:

33 m x 11 m

•

Oil Removal Skid:

~10 m x ~5 m

•

Cold Box With Panels:

21 m x 10 m

45 m

2. LHe PLANTS: LAY-OUT

•

COMPRESSOR STATION: 33m x 11m

2. LHe PLANTS: LAY-OUT

L

W

H

BUS

12 m

2.6 m

3.6 m

BLOCK

6 m

3.4 m

3.6 m

•

COLD BOXES:

21m x 4.2m – 140 tons

2. LHe PLANTS: LAY-OUT

L

W

H

BUS

12 m

2.6 m

3.6 m

BOX

21 m

4.2 m

4.2 m

2. LHe PLANTS: LAY-OUT

•

CRYOPLANT BUILDING:

120 m x 45 m

•

Compressor Station:

33 m x 11 m

•

Oil Removal Skid:

~10 m x ~5 m

•

Cold Box With Panels:

21 m x 10 m

45 m

3. LHe PLANTS: Characteristics

• LHe Plants

• Compressor Stations

• Cold Boxes

3. LHe PLANTS: Characteristics

ITER: 25 kW per Plant

CERN: 18kW per Plant

•

1 LHe Plant:

3. LHe PLANTS: Characteristics

ITER LHe Plants: ~ 75kW

•

3 LHe Plants:

•

Cryogenic Power / Plant: 25 kW

•

Cryogenic Power / Total:

75 kW

[ 40kW – 110 kW Pulsed]

CERN:

~ 140 kW

3. LHe PLANTS: Characteristics

•

3 COMPRESSOR STATIONS:

•

_{MYCOM Compressors: x 6 /Plant
x18 Total}

•

Electrical Power:

_{8 MW /Plant
24 MW Total}

1 PLANT

ea.

Type

Power ea.

Flow ea.

Flow Total

LP

X 4

400 L

1 100 kW

400 g/s

1 600 g/s

HP

X 2

400 S

2 500 kW

1 100 g/s

2 200 g/s

3. LHe PLANTS: Characteristics

•

3 COMPRESSOR STATIONS:

•

_{MYCOM Compressors: x 6 /Plant
x18 Total}

•

Electrical Power:

_{8 MW /Plant}

24 MW Total

•

HEAT RECOVERY SYSTEM:

•

Heating Power:

12 MW

_{1 Ton of Oil Equivalent per hour…}

Process Heat is used to provide Heating to ITER Buildings.

3. LHe PLANTS: Characteristics

•

3 COLD BOXES:

•

AL Turbines:

x 4 /Plant

•

LN2 Consumption:

85 000 L/day Total

[ eq. to x 3 Trucks / day]

LN2 Plants on site to cover LHe Plants needs.

1 PLANT

Type

Efficiency

Power ea.

Flow ea.

Temp.

LN2

-

-

110 kW

LN2 250 g/s

80 K

Turbine 1

TC-4

77 %

15 kW

115 g/s

50 K

Turbine 2

TC-4

77 %

13 kW

170 g/s

30 K

Turbine 3

TC-4

77 %

11 kW

230 g/s

20 K

Turbine 4

TC-5

74 %

11 kW

1300 g/s

5 K

•

1 COLD BOX:

• Main Challenges

• Control Philosophy

• Three Plants in Parallel

4. LHe PLANTS: Process

4. LHe PLANTS: PROCESS

• Main challenges:

 Multiple Users

 Pulsed Loads

 3 LHe Plants in Parallel

110 kW eq. @ 4.5K

40 kW eq. @ 4.5K

75 %

25 %

65 % Variations

over 30 minutes

•

1 LHe PLANT:

4. LHe PLANTS: PROCESS

LHe Tank

LN2 Pre-Cooling

Turbo-Expanders

[x3]

Turbo-Expander

LHe Sub-Cooler

2 Stage Compressor Station

•

3 LHe PLANTS:

4. LHe PLANTS: PROCESS

P

L

40 kW

110 kW

0 kW

MIN

MAX

MIN

• MIN Load: 1 200L LHe accumulated

• MAX Load:

1 200L LHe consumed

- 210 g/s

+ 210 g/s

0 g/s

1 200L

1 200L

30 min

•

3 LHe PLANTS:

4. LHe PLANTS: PROCESS

P

L

1 200 L of VARIATION

175 000 L

~1 % of TOTAL VOLUME

15 000 L

For 3 Plants: 1 200L Level Variation ~1%

LHe Tank designed to store the entire ITER LHe Inventory

•

3 LHe PLANTS:

4. LHe PLANTS: PROCESS

P

4. LHe PLANTS: PROCESS

P

•

3 LHe PLANTS:

EXCESS CAPACITY SHARING: Take what you need!

L

L

L

4. LHe PLANTS: PROCESS

P

•

3 LHe PLANTS:

FLOW RETURN FROM USER !

L

L

L

4. LHe PLANTS: PROCESS

P

•

3 LHe PLANTS:

FLOW RETURN FROM USER ! MAIN CHALLENGE !

L

L

4. LHe PLANTS: PROCESS

P

•

3 LHe PLANTS:

FLOW RETURN FROM USER ! MAIN CHALLENGE !

L

L

L

T

T

T

4. LHe PLANTS: PROCESS

P

•

3 LHe PLANTS:

FLOW RETURN FROM USER ! MAIN CHALLENGE !

L

L

L

T

T

T

CONTROLLER

•

3 LHe PLANTS:

COMPRESSOR STATION SHARING

4. LHe PLANTS: PROCESS

COMPRESSOR STATION INTERCONNECTED:

•

Same LP Pressure:

Better GHe Flow sharing.

•

Efficient Mass Balance:

•

MAIN CONCLUSIONS:

•

SHe Production:

•

Users are served in priority.

•

Excess flow sent to the LHe Tank.

•

LHe from LHe Tank used for Sub-Cooler.

•

Users Return GHe Repartition:

•

Based on Temperature Monitoring.

•

Compressor Station:

•

Interconnected

•

More Robust

•

Better Mass and Flow Balance

THANK-YOU FOR YOUR ATTENTION

LHe PLANTS – PARALLEL OPERATION

ITER Organization

The views and opinions expressed herein do not necessarily reflect those of the ITER Organization.