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CLRC 1FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE) Thermal Enclosure Function:
» Make End-cap thermally neutral» Condensation free exterior
» Containment of N2 purge gas (for moisture free interior)
» Prevent ingress CO2 & H2O
How Functions Met» Design based on calculations of thermal performance
w.r.t. environmental requirements (D Cragg)
CLRC 2FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE) Main Components
Rear ThermalEnclosureAssembly
Dry Gas (N2) Purge
Outer ThermalEnclosureAssembly
Services ThermalFeed Through
Inner ThermalEnclosureAssembly
Front ThermalEnclosureAssembly
CLRC 3FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE) Front Thermal Enclosure Assembly
Membrane
In-Fill Panel
Front Wing
Heater Assembly
Multi-FunctionFoil
CLRC 4FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Rear Thermal Enclosure
Multi-FunctionFoil
Heater Assembly
Insulating Pad
RearWing Foil
Spreader
Cooling Circuit
CLRC 5FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE) Outer Thermal Enclosure
Bracket
CoolingCircuit
Patching Foil
Front Bracket
Services Thermal Feed Through(Plain Half)
Heater Assembly
Multi-FunctionFoil
Spreader &InsulatingStructure
Front TEConnectingFoils
CLRC 6FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Outer Thermal Enclosure Continued...
Manifold(low z)
Return Circuit
Feed Circuit
Manifold(high z)
Inlet &ExhaustPipes
CLRC 7FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE) Inner Thermal Enclosure
Flange(low z)
AluminisedKaptonFacing
Multi-FunctionFoil
InsulatingStructure
CRFPCylinder
Heater Assembly
Inside SCT Environment
Outside SCTEnvironment
CLRC 8FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Services Thermal Feed Through
Rea
r W
ing
Ø8
Support Cylinder
Outer Thermal Enclosure
CLRC 9FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE) N2 Dry Gas Purge Routing
Exhausts
Inlets
ExhaustChannels(in wing core)
DistributionChannels
Wing FaceskinRemoved toShow Channels
CLRC 10FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Prototypes
Barrel Prototype
Glasgow EC Prototype
CLRC 11FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE) Conclusions
– Active Insulation requirements met as defined by thermal engineer (D Cragg)
Insulation 8 mm / 46 mW/m.K. 5 mm non active & Feed Through Kapton foil heaters, active insulation and condensation prevention,
higher power than required. Aluminium alloy cooling circuit C6F14 coolant fluid with 150um foil
spreader
– Setting liquid sealant, seals complex shapes but separable.
– Services Thermal Feed Through to warm services before entry to TRT environment.
CLRC 12FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Conclusions Continued…– N2 purge, distributed between Wheels, even
spreading helped by convection currents.– Electrical shield, a 50 or 100 m foil outermost
surface, taped joints, foil also; prevents moisture ingress spreader for heaters mechanically restrain heaters
– Prototypes being tested to prove calculated properties
CLRC 13FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Sealing & Electrical Connection
CLRC 14FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Sealing & Electrical Connection Continued...
CLRC 15FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Sealing & Electrical Connection Continued...
CLRC 16FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Sealing & Electrical Connection Continued...
CLRC 17FDR 10/01Jason Tarrant
SCT EC Thermal Enclosure (TE)
Properties & Requirements (D Cragg)
Above based on insulation with = 46mW/m.K.Other surfaces 5mm insulation recommendation, non-active (limit heating of the detectorenvironment during maintenance) & Services Thermal Feed Through.
