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NikhefAmsterdamMechanical-Technology
Short update on CO2 cooling activities at
Nikhef13 October 2010
Click icon to add picture
NikhefAmsterdamMechanical-Technology
Green CoolerCO2 Components
◦Accumulator◦Mass flow meter◦Relief valves◦Valve extensions
XFEL CoolerProspect
Contents
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NikhefAmsterdamMechanical-Technology
Green Cooler specificationsCooling capacity: 1.5 kWOperating temperature: -
40°C
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NikhefAmsterdamMechanical-Technology
Green Cooler cooling cycle
20
Settings:Temperature: -10 °CEnthalpy control: 175 J/g
Enthalpy control heater
4
150 200
30
40
H (J/g)
P (
bar
)
-10°C
-20°C
0°C
Experiment
NikhefAmsterdamMechanical-Technology
Green Cooler – VELO replacement
Cooling testsParallel cooling
capillaries
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NikhefAmsterdamMechanical-Technology
Components - AccumulatorAccumulator for CMSVolume 27.2 liter and
maximum pressure 110 bar → PED class III
Much delay caused by PED certification
A company that is too excellent (Lloyds)
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NikhefAmsterdamMechanical-Technology
Components - Mass flow meter
Mass flow meter RHM015
Resonance between 1750 and 2250 rpm
Mechanical vibrations
Mass flow meter test
New mass flow meter RHM03
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Experiment
NikhefAmsterdamMechanical-Technology
Components – Relief valvesSwagelok relief
valvesParker CE certified
relief valvesEPR 90 seal
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NikhefAmsterdamMechanical-Technology
Components - Valve extensions
Designed at Nikhef to extend standard Swagelok ball valves
Operate on a panelBetter insulation
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NikhefAmsterdamMechanical-Technology
European XFELX-ray Free Electron Laser detector
development at DesyA cooler with a cooling capacity of
1.2 kW at an operating temperature of -15°C
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NikhefAmsterdamMechanical-Technology
XFEL Cooler - Primary cooling
Commercial condensing unit
Operating temperature -25°C
ComponentsHot gas by-pass
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R404 cooling plant
NikhefAmsterdamMechanical-Technology
ProspectsRunning the Green Cooler at -30°CDeliver a certified accumulator at CMSTest mass flow meterTest Parker relief valvesBuilding the XFEL Cooler
For more information: http://www.nikhef.nl/pub/departments/mt/projects/CO2cooling/Projects/ http://www.nikhef.nl/pub/experiments/atlaswiki/index.php/XFELCooler
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