Cryogenik waste heat utilization for desy and european xfel
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Cryogenik waste heat utilization for DESY and European XFEL. 2nd Workshop on Energy for Sustainable Science at Research Infrastructurs. Jens-Peter Jensen, Eva Leister Energy for Sustainable Science Genf, 24.10.2013. DESY campus. DESY premises heat distribution.

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Cryogenik waste heat utilization for DESY and European XFEL

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Cryogenik waste heat utilization for desy and european xfel

Cryogenik waste heat utilization for DESY and European XFEL

2nd Workshop on Energy for Sustainable Science at Research Infrastructurs

Jens-Peter Jensen, Eva Leister

Energy for Sustainable Science

Genf, 24.10.2013


Desy campus

DESY campus


Desy premises heat distribution

DESY premises heat distribution

Heat distribution pipes 110 °C (red)

Heat pipes 80 °C (blue)

XFEL cryogenics plant

XFEL injector

district heating transfer station


Energy foot print of desy and xfel

Energy foot print of DESY and XFEL

DESY premises in 2015 ff

  • Electrical energy: 160 GWh, 25 MW

  • Heating energy: 20 GWh, 10 MW

  • Dominated by the accelerators and experimental halls

    XFEL operation at 10 Hz in 2016 ff

  • Electrical energy:120 GWh, 20 MW

  • Heating energy: 10 GWh, 5 MWSchenefeld premises

  • Cryogenics electrical energy at 10 Hz: 24 GWh/a

    • Heating demand is predominant on the Schenefeld and Osdorf premises

    • XFEL cryogenic plant is on the DESY premises, ex HERA cryogenics plant

  • XFEL cryogenics waste heat utilization possible for DESY premises


Cryogenik waste heat utilization for desy and european xfel

Cryogenics


Cryogenic plant functionality

Cryogenic Plant Functionality

300 K

6 K

XFEL

modules

tunnel

injector

oil

seperator

compressors

Subcooler

50°C

75°C

Coldbox

Dewar

40°C

air cooler

heat exchanger

He preheater

The helium-heater is only used when the subcooler is cooling down or heating up.

Helium

to the heat distribution return pipe

Oil Breox B35

Oil-Helium mixture


Oilsystem of the xfel cryogenic plant

Oilsystem of the XFEL Cryogenic Plant

low pressure compressors

heat exchanger for cryogenics waste heat utilization

air/oil cooler


Temperature plot of the breox oil in 2012

Temperature Plot of the Breox Oil in 2012

average: 70,2 °C

oil temperature of the high pressure compressor in 2012


Heat emission of 1 street of the cryogenic plant in 2012

Heat emission of 1 street of the cryogenic plant in 2012

average value: 823 kW


Cryogenik waste heat utilization for desy and european xfel

Heat Distribution Sceme of DESY Premises

UST 28c

UST 67-1

UST FLASHII

UST 47

19

20

20a

38

UST CFEL

UST Nanolab

UST 49

UST 67-2

21

18

46

37

UST 72

22

UST PXN

UST ZOQ

28

UST 67

UST 25b3

36

45

17

26

25

24

UST 25

27

UST 69

23

UST 8

41

42

UST 54

31

29

access to heat distribution

UST 30

UST 24

UST 48

32

exist

16

15

XFEL cryogenic

UST 25c

35

4a

UST 62

30

40

UST CSSB

cuts for calculations

14

UST 1d

33

39

34

UST 16

UST 2

UST 1a

4

5

UST 10

UST 64

7

44

13

UST 17

8

District heating transfer station

3

3a

9

12

UST 11a

1

10

2

UST = heat substation

UST 5

UST 3b

UST 80b

11

UST 7

6

UST 3

Vattenfall district heat supply


Simulation models for matlab simulink

Simulation Models for MATLAB/Simulink

district heat transfer station

heat substation

heat pipes

heat exchanger of the cryogenic plant


Classified heat load curve of 2012

Classified Heat Load Curve of 2012

DESY heat consumption 2012 20,9 GWh/a

1 street of the cryogenic plant

2 streets of the cryogenic plant


Results of cryogenic heat utilization

Results of Cryogenic Heat Utilization

  • price for district heat: 0,05 €/kWh

  • investment costs: 592 k€

  • refunding rate: 10 %

  • district heat: 238 g CO2/kWh


Waste heat utilization from the xfel water cooling

Waste Heat Utilization from the XFEL Water Cooling

Pump House

Schenefeld

Pump House

DESY campus


Water cooling of xfel injector and main linac xtl

Water Cooling of XFEL Injector and Main Linac XTL

Electronic rack cooling in winter

cooling towers

compression chiller

winter Tair<16°C

summer Tair >16°C

25°C

40°C

heatexchanger

28°C

18°C

heatexchanger

heatexchanger

20°C

30°C

20°C

30°C

30°C

14°C

8°C

45°C

klystrons: 7500 kW

magnets: 500 kW

electronic racks: 200 kW

(water cooled)

air conditioning: 800 kW


Cryogenik waste heat utilization for desy and european xfel

Heat Distribution Sceme of DESY Premises

UST 28c

UST 67-1

UST FLASHII

UST 47

19

20

20a

38

UST CFEL

UST Nanolab

UST 49

UST 67-2

21

18

46

37

UST 72

22

UST PXN

UST ZOQ

28

UST 67

UST 25b3

36

45

17

26

25

24

UST 25

27

UST 69

23

UST 8

41

42

UST 54

31

29

UST 30

UST 24

UST 48

32

16

XHMP waste heat pump

15

UST 25c

35

4a

UST 62

30

40

UST CSSB

cuts for calculations

14

UST 1d

33

39

34

UST 16

UST 2

UST 1a

4

5

UST 10

UST 64

7

44

13

UST 17

8

District heating transfer station

3

3a

9

12

UST 11a

1

10

2

UST = heat substation

UST 5

UST 3b

UST 80b

11

UST 7

6

UST 3

Vattenfall district heat supply


Waste heat pump calculation

Waste Heat Pump Calculation

  • Heat pump: 630 kW, Tcond = 85 °C, Tvap = 40 °C

  • Heat is transferred into the heat distribution return pipe

  • Investment costs are 725 k€

  • Without heat utilization from the cryogenics

  • price for district heating: 0,05 €/kWh electricity: 0,15 €/kWh

  • investment costs: 725.000 €

  • adequate target rate: 10 %

  • district heating: 238 g-CO2/kWh elecricity: 336 g-CO2/kWh


Conclusion

Conclusion

Cooling water waste heat utilization with heat pump

  • The most waste heat goes into the cooling water

  • The cooling water temperatures are to low for direct transfer into the heat distribution pipes

  • One needs a heat pump to boost the temperature

  • The savings does not pay back the invest and service costs

    and

  • The XFEL pump house XHMP is near the cryogenics hall

  • The heat pump is in competition with the cryogenics

  • This makes it even more uneconomic


Conclusion1

Conclusion

XFEL Cryogenic oil waste heat utilization

The utilization of the oil waste heat pays back after 2 – 3 years

Heat pump utilization to boost low temperatures does not pay


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