State Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

27th IAEA FEC, 22-27 October 2018, Ahmedabad, IndiaРОСАТОМ

State Nuclear Energy Corporation “Rosatom”

Spray
Spray

Coolant out

GasWaterAtomizer

Power flux

Stock Company “Red Star”

27th IAEA FEC, 22-27 October 2018, Ahmedabad, IndiaРОСАТОМ

State Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

27th IAEA FEC, 22-27 October 2018, Ahmedabad, IndiaРОСАТОМ

State Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

РОСАТОМ

1 mm of Li CPS (SS, Mo, W)
1 mm of wall (SS, V alloy)

Base structure of PFCsurface

flowing coolant

Active cooling Li limiter of T -11M
Q 10 MW/m2, t=0.2 s W CPS

Field type pipe

SS CPS

Li CPS

inlet

outletLivolumewater

Li surface / coolant Tmin

CLL200oCÊÀVacuum
Pumpo

Li surface Tmax

550 C

Surface area

40 cm2

Power exhaust

20 kW

Heat-transfer agent

water

Agent pressure

up to 20 bar

Flow rate

0.05 l/s

P1

V1
V2

P2
Ò7V4

Ò6PR

V3

Ar

V6V5
Ò1

Ò4

water pump

Ò2

Ò5cv

Ò327th IAEA FEC, 22-27 October 2018, Ahmedabad, India

EHWaterTankState Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

Active cooling Li limiter (CLL) of FTU (is under tests)
Q =10 MW/m 2 , t ~1.5 - 5 s
CLL with Field type pipe
W + LiMo tubeLi surface / coolant Tmin

Li volume

Water outlet

200-230 oC

Li surface Tmax

550 oC

Surface area

100 cm2

Power exhaust

100 kW

Heat-transfer agent

water

Agent pressure

up to 40 bar

Flow rate

0.05-0.5 l/s

inlet

CLL with direct type flow
W + LiMo tubeLi volumewith heater

27th IAEA FEC, 22-27 October 2018, Ahmedabad, IndiaРОСАТОМState Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

РОСАТОМLithium divertor module of KTM (standby mode)
Q =10 MW/m 2, t ~ 5 sOut-vessel system

PFC

Li surface / coolant Tmin

200 oCLi surface Tmax

550 oC

Surface area

1000 cm 2

Power exhaust

100 kW

Heat-transfer agent
Agent pressure
Flow rate

22%Na+78%K alloy
2-5 bar
0.1 - 1.5 l/s

27th IAEA FEC, 22-27 October 2018, Ahmedabad, India

State Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

РОСАТОМActive cooling liquid Tin limiter (TLL) of FTU (is under tests)
Q =10 MW/m2, t ~ 5 s

Prototype of new PFC generation

W +Sn

Air to TLL

Mo

Water to TLL

TLL output

Water flow
regulation

Cooling waterclose / open

Li surface/coolant Tmin

240oC

Li surface Tmax

900oC

Surface area

85 cm 2

Power exhaust

85 kW

Heat-transfer agent

Water spray

Agent pressure

up to 2 bar

Flow rate
input

0.05 l/s

output27th IAEA FEC, 22-27 October 2018, Ahmedabad, India

State Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

Gas/waterAtomizerGas
WaterCPS

Li supply

Liflow
Coolant out

Li pump

Coolant out

Li volumeLi out

27th IAEA FEC, 22-27 October 2018, Ahmedabad, IndiaРОСАТОМ

State Nuclear Energy Corporation “Rosatom”

mm340 mmmm60800

1 MW/m 210 MW/m 2700 mm

Stock Company “Red Star”b

27th IAEA FEC, 22-27 October 2018, Ahmedabad, IndiaРОСАТОМ

State Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

Main design scheme

27th IAEA FEC, 22-27 October 2018, Ahmedabad, IndiaРОСАТОМ

State Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

Temperature Tmax<500oCРОСАТОМStress, Smax=250 MPabacTemperature and stress analysis
27th IAEA FEC, 22-27 October 2018, Ahmedabad, India

State Nuclear Energy Corporation “Rosatom”

Stock Company “Red Star”

РОСАТОМConclusion
The developed concept and the hands-on experience in steady-state operating
LM PFE creation and tests allows the solving a number of critical issues in thedevelopment of appropriate PFE design that meet the requirements for longterm operation at DEMO type tokamak conditions.
Tungsten fiber based CPS with lithium provides PFE surface protection andrenewal under expected power flux. Thin-walled cooling system ensures
maintenance of LM surface temperature at an appropriate level preventing
plasma pollution. The new composite structural material (67%W fibers + 33%
Eurofer steel) for the PFE first wall is presented to meet requirement in radiation
stability, thermal and stress capabilities. New type of coolant based on water-gas
spray is considered and proposed as more convenient coolant for lithiumcontaining PFE that meet temperature limit and safety demands. All these points
allow to elaborate promising design of the DEMO divertor target plate.

27th IAEA FEC, 22-27 October 2018, Ahmedabad, India