56 mhz cryogenic system r. than j. huang p. orfin t. tallerico jan. 19, 2011
TRANSCRIPT
56 MHz Cryogenic System
R. ThanJ. HuangP. Orfin
T. TallericoJan. 19, 2011
56 MHz Quiet Cryogenic Delivery Subsystem
• Transfer lines from S and R line taps plus 1st phase separator
• Cryostat with Boiler/Condenser Heat exchanger• Local Booster compressor • Heating System for return vapor + warm piping• Relief Header to outside (not required)• Instrumentation & Controls
Process Flow Diagram
Process & Instrumentation DiagramHelium tap-ins and Phase Separator
Process & Instrumentation DiagramBoiler and Condenser
Process & Instrumentation DiagramCavity
Haug Compressor
• Type QTOGX 180 LM-L• Oil free compression of dry, filtered Helium • 4 cylinders, 1-stage, air-cooled, gastight with
magnetic couplingMedium Helium, dry and filteredDew point - 80 ° C. Operating conditions min normal maxSuction temperature °C 20 20 20Suction pressure p1 bar(abs) 0.9 1.0 1.2Discharge pressure p2 bar(abs) 2.0 2.0 2.0Free gas delivery Nm3/h 240 270 330(referred to 1013 mbar, 0° C.)Massflow kg/h 43.0 48.5 59.5
11.9 g/s
Condenser Vapor Space Volume
vapor
condenser
liquid
Condenser Vapor Space Volume
Heat transfer gradient across condenser/boiler set pressure change in cavity volume between 0 load to full load, e.g. 100W
Condenser Vapor Volume sets the pressure rise rate dP/d
Condenser/Boiler• Designed heat load 100 W• Proposed heat transfer surface area 20 m2
• Average heat flux across heat transfer surface area 5 W/m2
• Condenser side temperature 4.4 K• Boiler side temperature 4.3 K• Proposed heat exchanger type Plate and fin• Heat exchanger material Al 3003• Condenser vapor volume 250 Liters
Condenser/Boiler• DT1 , Condenser side condensed liquid helium
film 10 mK• DT2 , Fin on condenser side 6 mK• DT3 , Parting plate wall 0.2 mK• DT4 , Boiler side, natural convection 59 mK• DT5 , Fin on condenser side 6 mK• DT6 , Helium column at bottom of the heat
exchanger 9 mK• DTtotal 90.2 mK• DTbudget 100 mK (100 mbar, condenser side)
Transfer lines from S and R line taps plus 1st Separator
• Transfer lines• Tap from S main header
– Warmer Liquid helium than M main header
– 3.5 atm, 5.3K– Pressure variation– 10Hz source
• Tap back into R header– Vapor return from 1st
phase separator
• 1st Separator– Operates at 1.45 atm– Takes warmer S line
helium and produce 4.65K liquid
– Recycles vapor back to R main header
– Vapor from warm S header liquid, + Heat leak from supply transfer line
Cryostat with Boiler/Condenser
• Boiler loop (PFD)• Some Vapor used for
shield flow• Bayonet for Portable
dewar fill
• Condenser Volume– 250 Liters– Pressure change ~ 64
mbar
Booster Compressor
• Oil free compressor• 4 cylinder piston• 11 - 12 g/s helium• Leak tightness: 1E-3T-L/s• P_suction: 0.9 bar• P_discharge: < 2.0 bar • Air cooling • Power: < 20 HP• < 15 psig: not ASME VIII• European CE/PED Code
• Gas Management– Suction pressure control– Bypass valve High to Low
– Return back to WR header at 1.25 bar
Vapor Heating System + warm piping
• Ambient Air Exchanger• Dual exchangers for
defrost cycling, continuous duty
• ~ 14 kW @ 10 g/s• Rate 15 psig
• Non Jacketed Piping:– Helium Boiler Cryostat to
ambient heat exchanger to compressor suction, ~ 120 ft
– Compressor discharge to WR header, ~ 120 ft
Relief System
• 5 psig Small Process Relief – Piped to WR header– Handles cooldown, fill,
warmup excursions
• Burst disk 7-8 psig– Discharge to IP volume– Vacuum switch to isolate
supply valve
• Relief Header (not required) catastrophic failure release scenario
• Finite inventory
56 Mhz Cryogenic Instrumentation
• Instrumentation Count• Proportional Valves – Qty 9.• Digital Valves – Qty 2.• Pressure Transducers – Qty 3.• Level Monitoring – Qty 3.• Temperature – Qty 26. (22 ordered)
7 high temperature range (1.4k – 420K)19 standard temp range. (1.4k – 325K)
• Vacuum* – Qty 3. (2 insul. And 1 beam)
*Supplied by vacuum group
56 Mhz Cryogenic Instrumentation
• Instrumentation Cables – Pulled by Cryo Group.
• Will use upgraded Square D system to read signals. In process of upgrading now on AIP.
*Supplied by vacuum group
Major Equipment
• Jan VJ Lines Supply/Return+ 1st separator: • BNL Eng +Design: Jan thru Feb 2011 (2 months)• PPM + RFQ +Award Mar April 2011 (2 months)• Manufacturing: May June July Aug September (5 months)• Install: Sept/Oct ( field joints 2 welds plus jacket welds)• • Oil-free air cooled compressor + warm piping + small shack • BNL Eng +Design: Jan thru April 2011 (4 months)• PPM + RFQ +Award May June July 2011 (3 months)• Manufacturing+ delivery: Aug 2011 thru Mar 2012 (6
months)• Install : May 2012 thru June 2012 (Outside tunnel, Just
outside rad control fence)• • • Condenser: • BNL Eng +Design: Jan thru Feb 2011 (2 months)• PPM + RFQ +Award Mar April 2011(2 months)• Manufacturing: May 2011 thru April 2012 (11 months)• Delivery to cryostat manufacturer for install (see below)• Install at Manufacturer: May 2012 thru June 2012 (2 months)• • •
• Cryostat: • BNL Eng +Design: Jan thru April 2011 (4 months)• PPM + RFP +Award May, June July 2011 (3 months)• Manufacturing: Aug 2011 thru July 2012 (11 months) (get
condenser in May)• Install: July/Aug 2012• Ambient vaporizer 15 kW• BNL Eng +Design: Feb 2011 (1 months)• PPM + RFP +Award May, June July 2011 (3 months)• Manufacturing: Aug 2011 thru Nov 2011 (4 months) • Install: July/Aug 2012 + piping• • • Controls & Instrumentation• PLC rack upgrade from Symax to Modicon Quantum
(underway) • Cernox TT’s ordered.• Level, PT, etc. TBD• Cables +tray + rack TBD
Major Equipment2011 VJ S/R Comp Conde Cryost
Jan E&D E&D E&D E&D
Feb E&D E&D E&D E&D
Mar E&D E&D E&D E&D
Apr B&P E&D B&P E&D
May B&P B&P B&P E&D
Jun Manu B&P B&P B&P
Jul Manu B&P Manu B&P
Aug Manu Manu Manu B&P
Sep Manu Manu Manu Manu
Oct Install Manu Manu Manu
Nov Manu Manu Manu
Dec Manu Manu Manu
2012 VJ S/R Comp Conde Cryost
Jan Manu Manu Manu
Feb Manu Manu Manu
Mar Manu Manu
Apr Manu Manu
May Install Manu Manu
Jun Install Manu
Jul Install Manu
Aug Install
Sep Install
Oct TEST
Nov
Dec
Budget: FY11:300K, FY12: 1200K Unburdened Burdened Requested
VJ S&R Lines 80K
Compressor +Shack+ Elec
180K
Warm Piping +Ambient HX
75K
Condenser 60K
Cryostat 650K
Instr. & Controls
80K
Relief Stack 50 K
Trades 120K
1295 1500 1664