FEE COOLING UPDATE CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

A COPPER BOX (HEAT EXCHANGER) ADDED TO FE1 BOARDS THERMAL CONTACT THROUGH THERMAL INTERFACE MATERIALS (ELECTRICAL INSULATOR) (THERM-A-GAP PARKER CHOMERICS, k=6.5 W/m∙K) (THERMFLOW 777 PARKER CHOMERICS, k=7.7 W/m∙k) DELIVERY & HEXAUST OF THE COOLANT THROUGH SS 316 TUBES & FITTINGS ALL COMPONENTS ARE BRAISED/GLUED BOX FIXED ON FE1 BOARD WITH SCREWS (not shown) WEIGHT < 50 g LAYER 3 LAYERS 1&2 CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

Tmax =21.5 oC WATER TIN18 °C 0.5 l/min ΔP=0.05bar THERMAL LOAD=0.8 W WATER TIN18 °C 0.5 l/min ΔP=0.05bar THERMAL LOAD=0.8 W CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

FIRST PROTOTYPES - ALL PARTS ARE GLUED WITH ARALDITE 2014 CURED AT 150 °C/2 h TEST IN PRESSURE/WATER 4 bar/5 h PRESSURE DROP TEST NOT PERFORMED YET CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

HEAT EXCHANGER LAYER 1&2 Tmax =29.7 °C 4 RESISTORS (100Ω) FIXED WITH THERMAL GLUE (k=4 W/m∙K) TWATER = 18 °C - q=0.5 l/min Tmax =29.7 °C CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

HEAT EXCHANGER LAYER 3 Tmax =28.8 °C 4 RESISTORS (100Ω) FIXED WITH THERMAL GLUE (k=4 W/m∙K) TWATER = 18 °C - q=0.5 l/min Tmax =28.8 °C CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

LAYER 3 18 heat exchangers in two groups (9+9) 1 line IN + 1 line OUT DELIVERY EXHAUST CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

LAYER 2 14 heat exchangers in two groups (8+6) 1 line IN + 1 line OUT DELIVERY EXHAUST CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

LAYER 1 8 heat exchangers in one group 1 line IN + 1 line OUT EXHAUST DELIVERY CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

BES III CGEM INLET LINES 2.5 l/min ø6xø4 - 0.5 l/min ΔP=0.45 bar - 9 FEE modules ø8xø6 - 1 l/min ΔP=0.025 bar/m - Re=2650 LAYER 3 ΔP=0.015 bar/m - Re=3530 ø6xø4 - 0.5 l/min ΔP=0.45 bar - 9 FEE modules ø4xø2.5 - 0.5 l/min ΔP=0.30 bar - 6 FEE modules ø6xø4 - 1 l/min LAYER 2 ΔP=0.23 bar/m - Re=4230 2.5 l/min ΔP=0.08 bar/m - Re=5300 ø4xø2.5 - 0.5 l/min ΔP=0.40 bar - 8 FEE modules ø6xø4 - 0.5 l/min ø4xø2.5 - 0.5 l/min LAYER 1 ΔP=0.025 bar/m - Re=2650 ΔP=0.23 bar/m - Re=4230 ΔP=0.40 bar - 8 FEE modules BES III CGEM CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

HYDRAULIC LAYOUT PATCH PANEL CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino

SHOPPING LIST 2 CHILLERS: Pterm≈0.5 kW, q≈4 l/min, P≈4 bar 40 HEAT EXCHANGERS LAYER 3 45 HEAT EXCHANGERS LAYER 1 & 2 FITTINGS PATCH PANEL(S) HYDRAULIC COMPONENTS ANCILLARIES ESTIMATED TOTAL COST≈25÷30 k€ (outside construction) ≈12÷15 k€ (in-house construction) CGEM Workshop - IHEP - June 13th 2017 G.Giraudo INFN Torino