D. Gasser ST/CV 1

Fluid distribution from UW85Fully available now.

D. Gasser ST/CV 2

Available performances in UX85

Flow rate Cooling power

ΔT ΔP

Mixed water 215 m3/h 1.5 MW 13/19oC 2 bars

Chilled water 50 m3/h 350 kW

(up to 500 kW if needed)

6/12oC 2 bars

Demineralised water

150 m3/h 5 MW 27/56oC 10 bars

D. Gasser ST/CV 3

Cooling fluid distribution in UX85

D. Gasser ST/CV 4

Counting rooms (I)Heat loads on the water network

Room Heat dissipated by the electronics (released to mixed water)

Heat released in the ambient (estimation)

Cooling capacity of the ventilation unit (released to chilled water)

D1 580 kW 35 kW 2*30 kW

D2 490 kW 30 kW 2*30 kW

D3/A 120 kW 10 kW 15 kW

D3/B 120 kW 10 kW 30 kW

Total 1310 kW 165 kW

D. Gasser ST/CV 5

• Air flow measurement

• Update the control system (new regulation components and PLC)

• Change the electrical heating coil

• Modify the air-duct and/or motor/fan set if necessary

• An work quotation is being done

Counting rooms (II)Work to be done on the ventilation units

D. Gasser ST/CV 6

• Integration of the piping in the UX85 cavern

• Modify mixed water piping on D3/B room

• Add chilled water piping on D3/B room

• Connection of each room to mixed and chilled water network with necessary instrumentation (flow-meters, temperature probes)

Counting rooms (III)Work to be done on the water network

D. Gasser ST/CV 7

LHC’b sub-detectors and electronicsHeat loads on the water network

Item Heat dissipated to chilled water

Heat dissipated to mixed water

IT and TT 25 kW (conservative estimation on the chillers condenser side)

IT and TT services boxes 8.5 kW

RICH 1 and 2 12 kW (8kW*1.5 safety coefficient)

OT 22.5 kW

OT power supply boxes 4 kW

VELO 12 kW

VELO vacuum pumps 1 l/min/pump

Calorimeter 23.2 kW???

Muons 24 kW???

Total 49 kW 82.2 kW + ?

D. Gasser ST/CV 8

Whole LHC’b areaHeat loads on the water network

Item Heat dissipated to chilled water

Heat dissipated to mixed water

LHC’b subdetector and electronics

49 kW 85 kW

Counting rooms 165 kW 1310 kW

Total 214 kW (vs 350 kW available)

1395 kW (vs 1500 kW available)

D. Gasser ST/CV 9

Workpackages

• OT cooling station with transfer lines (end by 06/2005) • IT + TT cooling station with transfer lines (end by

11/2005)• RICH1 and 2 cooling station with transfer lines (end by

11/2005)• VELO cooling station with transfer lines (end by ??)• Connection of muons, calorimeters, IT and TT services

boxes, OT power supply box, VELO vacuum pumps (end by ??)

• Connection of counting houses (end by ??)

D. Gasser ST/CV 10

Important topic yet to be clarified

• Integration of VELO local control system to the supervision (to be discussed with NIKHEF)

• Muons and calorimeters:– Heat dissipation to be confirmed– Number and location of connection points to the

mixed water-network

• Services boxes for IT and TT, power supply box for OT, vacuum pumps for VELO:– Number and location of connection points to the

mixed water-network