Air Liquide cryogenic solutions for HTS refrigeration Focus on Turbo-Brayton

Cécile Gondrand – ICEC25 – July 9th 2014

2 Air Liquide, world leader in gases for industry, health and the environment

Outline

■ Turbo-Brayton for HTS: Why?

■ Turbo-Brayton description

■ Product line range

■ Recent developments

■ Conclusion

3 Air Liquide, world leader in gases for industry, health and the environment

■ Air Liquide is involved in cryogenics systems dedicated to superconductor

since its discovery.

■ LIPA : a successful project in operation since 2008

Turbo-Brayton – Why?

4 Air Liquide, world leader in gases for industry, health and the environment

■ Air Liquide is involved in cryogenics systems dedicated to superconductor

since its discovery.

■ LIPA : a successful project in operation since 2008

Turbo-Brayton – Why?

5 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton – Why?

■ LIPA : a successful project in operation since 2008

HV Termination

RedundantCooling & Control

Cold Termination

Bulk

LN

2

Stor

age

Heat

Power

SCAD

A

Supply

Return

HV Termination

RedundantCooling & Control

Cold Termination

Bulk

LN

2

Stor

age

Heat

Power

SCAD

A

Supply

Return

6 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton – Why?

■ LIPA experience

Classical Brayton refrigerator

Several modules for the overall operation

Back-up

module

Main cold

box

LN2

supply tank

Cool down

skid

Compressors and Oil

Removal System

Helium buffers

7 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton – Why?

■ LIPA experience

Classical Brayton refrigerator

Several modules for the overall operation

■ Lessons learnt

Simplify the overall system

■ Only one skid => easy and quick installation and commissioning

■ Easier operation and control system

Improve the reliability of the refrigerator and its components

Improve the efficiency of the refrigerator, with an easy adjustable heat load

Turbo-Brayton

Back-up

module

Main cold

box

LN2

supply tank

Cool down

skid

Compressors and Oil

Removal System

Helium buffers

8 Air Liquide, world leader in gases for industry, health and the environment

From conventional Brayton to Turbo-Brayton

■ The only rotating part of the

system is the Moto-turbo-

Compressor shaft

M

Eau

LN2, GHe… High efficiency

No maintenance

High reliability

High lifetime

Water

9 Air Liquide, world leader in gases for industry, health and the environment

From conventional Brayton to Turbo-Brayton

10 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton product line range

11 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton Product line – Range

M

0

10

20

30

40

50

TBF-80 TBF-160 TBF-240 TBF-350

Cry

oge

nic

po

wer

at

77

K (k

W)

Carnot 27%

Carnot 37%

Carnot 39%

Carnot 41%

7,6

20,8

33

50,8

12 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton Product line – Range

M

M

0

10

20

30

40

50

TBF-80 TBF-160 TBF-240 TBF-350

Cry

oge

nic

po

wer

at

77

K (k

W)

Carnot 27%

Carnot 37%

Carnot 39%

Carnot 41%

7,6

20,8

33

50,8

13 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton Product line – Range

M

M

0

10

20

30

40

50

TBF-80 TBF-160 TBF-240 TBF-350

Cry

oge

nic

po

wer

at

77

K (k

W)

Carnot 27%

Carnot 37%

Carnot 39%

Carnot 41%

7,6

20,8

33

50,8

14 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton recent developments

15 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton recent developments

■ Improvement of the existing range : -15% on electrical consumption Increase of the turbine efficiency

Smarter motor control

0

10

20

30

40

50

TBF-80 TBF-160 TBF-240 TBF-350C

ryo

gen

ic p

ow

er a

t 7

7K

(kW

)

Carnot 27%

Carnot 37%

Carnot 39%

Carnot 41%

7,6

20,8

33

50,8

16 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton recent developments

■ Improvement of the existing range : -15% on electrical consumption Increase of the turbine efficiency

Smarter motor control

■ Design of the TBF-350

0

10

20

30

40

50

TBF-80 TBF-160 TBF-240 TBF-350

Cry

oge

nic

po

wer

at

77

K (k

W)

Carnot 27%

Carnot 37%

Carnot 39%

Carnot 41%

7,6

20,8

33

50,8

M

M

More than

40% Carnot

efficiency

17 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton recent developments

Higher refrigeration capacity available

■ Up to 51 kW at 77K

Lower temperature

■ Down to 35K

Refrigeration capacity vs Temperature of the Turbo-Brayton product line

18 Air Liquide, world leader in gases for industry, health and the environment

Turbo-Brayton recent developments

■ Goal : maintain a high reliability on global solution Thermal link required to cool HTS devices : need of a pump for circulating fluid

Development of a pump on magnetic bearings

Overall MTBF not reduced by the use of ball bearings

M

LN2

or

GHe

19 Air Liquide, world leader in gases for industry, health and the environment

Conclusions

20 Air Liquide, world leader in gases for industry, health and the environment

Conclusions

■ Thanks to ALAT long experience in HTS projects, a complete solution has been developed for efficient and maintenance free refrigeration Complete oil-free technology for refrigerator+pump

From 35 to 150K

Up to 51kW at 77K

Carnot efficiency up to 41%

Global MTBF 105 000h

■ Developments continue Lower cryogenic temperature to address LTS applications

Increase efficiency

Thank you for your attention