Comparison%20of%20cooling%20services%20at%20barrel%20end

1
Comparison of cooling services at barrel end
Description
SCT Barrel Upgrade ID barrel

one end one end
Total number of staves/rows
176 Staves/rows serviced off one
end 88
use sample of 88 Length of stave/row wrt
barrel length full length
half length Total exhaust pipes off
barrel end 22
88 Total input pipes
off barrel end 44
88 Number
of pipes on each stave/row 1

2 Staves/rows served by 1 exhaust pipe
4
1 Staves/rows served by 1 input pipe
2
1 Cooling unit serves
alternate 4 rows
integrated with stave Location of exhaust
manifold inside barrel end
no manifolding Number of pipes to
manifold 2 pipes go to 1
Length of manifold approx.
60mm
Material exhaust spiders
Cu
ss Material input capillary
CuNi
ss Number exhaust connectors
22
88 Number input connectors
44
88 Extra pipe on
stave/row
gt SCT x 2 Extra
exhaust pipe on barrel end
gt SCT x
4 Extra pipe outside barrel end
gt
SCT x 3
2
Current SCT Barrel cooling layout for 4 rows 1
manifold.
end flange
cooling direction
modules
Upgrade SCT Barrel cooling layout for 4 rows no
manifolds
staves
Schematic illustrating comparative occupation of
cooling pipes/manifolds/connectors on one barrel
end flange overlap of modules not shown,
equivalent active area 4 full length rows on
old compared with half-length new (very
approx.) Not to scale.
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SCT BARREL END..22 Cu cooling pipe spiders
Wait and seeif this scenario leads to a 10
loss in the EC then Upgrade will probably lose
40 in the EC even without cooling connectors.