1. Michele Battistin Elena Perez Rodriguez 10 November 2010
Detector Cooling Project - advancement status of Work Package N3 Thermosiphon project
Michele Battistin
Elena Perez Rodriguez
10 November 2010

2. Index Introduction Basic design Chiller
Piping installation and integration
Other tasks: control, infrastructures
Planning and cost estimation
Conclusion

3. Introduction The Thermosiphon project started in March 2009
Objective: consolidate the ATLAS ID evaporative station
Milestones achieved
Mini-Thermosiphon
Preliminary study and tests
2kW Thermosiphon
Design
Purchase
Control
Construction
Perform tests
Full Scale Thermosiphon
Basic design and technical note
Integration
Cost estimation
Planning and organization of piping work
Chiller purchase process
Detailed design and selection of components

4. Basic design
Low temperature
Chiller
condenser
The thermosiphon is the baseline solution for the consolidation of the ATLAS ID evaporative cooling system.
The main design parameters are
Power: °C
Pressure and temperature at the rack: 500 mbar, 20 C
Flow at full power: 1.2 kg/s
The present compressor system will remain as full power back up cooling source.
liquid
tank
pneumatic
valve
Surface
pneumatic
valve
USA15
others
manual
valve
4 liquid lines PR
Heater
thermal
screen
UX15
USA15
From
compressors
dummy
load
pixel
manual
valve
6 X SCT
4 gas lines
BPR
manual
valve To
compressors

5. P&ID of the Thermosiphon

6. P-h diagram A E C B D F I G H J L K Pressure [bar] Enthalpy [kJ/kg]
Liquid heater
A-B Condensation
B-C Hydrostatic Height
C-D Heating (from return gas)
D-E Heater
E-F Pressure Regulation
F-G Sub-Cooling on detector HX
G-H Pressure Drop & Capillary
H-I Evaporation
I-J Heating on Sub-Cooling HX
J-K Superheating
K-L Pressure Drop (PReg & return line)
L-A Sub-Cooling (from liquid supply)
liquid line to detector
HEX subcooling
Head
Capillary
pressure drop
HEX recuperation
evaporation
heater
condensation
Gas cooler
∆h=48kJ/kg
∆h=122kJ/kg

7. Chiller: basic solution
C3F8 condenser
180 kW
-70 °C
Back-up
50 kW
-20 °C
Brine circuit
Redundant pumps
Primary water
25°C
liquid
tank
First 50% power
chiller
C6F14 brine circuit
Surface
Second 50% power
Chiller
First cycle for
Emergency
diesel powered
USA15
cavern
Third 50% power
Chiller
First cycle for
Emergency
Diesel powered
Air cooled
UX15
cavern
ATLAS ID
Detector

8. P&ID of the basic solution

9. Chiller: alternative solution
C3F8 condenser
180 kW
-70 °C
Back-up
50 kW
-20 °C
Primary water
25°C
Brine circuit
Redundant pumps
liquid
tank
C6F14 brine circuit
Main 100%
Redundant chiller
Surface
USA15
cavern
First water cooled
back-up chiller
Diesel powered
Running only in case
of main chiller failure
Second air cooled
back-up chiller
Diesel powered
Running only in case
of first back-up chiller
failure and water
maintenance periods
UX15
cavern
ATLAS ID
Detector

10. P&ID of the alternative solution

11. ATLAS reviewing process
1st Thermosiphon review: 6th July 2009
Pre-design and general lines of the project.
Indico agenda and documents here.
2nd Thermosiphon review: 1st October 2009
Detailed design for the 2 kW Thermosiphon, mini-thermosiphon and blends.
Indico agenda and documents here.
3rd Thermosiphon review: 28th May 2010
Advancement status of Thermosiphon project, oil free centrifugal compressors and sonar sensor.
4th Thermosiphon review: next week (?)
Project Readiness Review.

12. Chiller purchase status
Market survey
Evaluation visits to suppliers
Invitation to Tender
Document prepared
Specification meeting
Offers from selected firms
Reception
Evaluation
Department proposal and peer review
Finance committee 16th March

13. Market survey results Companies Qualification criterias Qualified Name
Country of origin
Well balan ced
Visit
Criteria § 3
Criteria § 4.1
Criteria § 4.2
Criteria § 4.3
Criteria § 4.4
Criteria § 5.1
Criteria § 5.2
Criteria § 6
Criteria § 7
Administrative situation
2 references
Industrial PLC use
In-house design office
Workshop
Turnover
Employees
Quality
Language
Angelantoni
Italy
yes
Known company
YES
Idom
Spain no NO
Cofely Refrigeration
Germany
30/Sept (Lindau)
GEA Matal / Technofrigo
France
17/Sept (Berlin)
Herco
7/Oct (Düsseldorf)
Johnson controls (York)
Switzerland
8/Sept (Visp)
J&E Hall
England
14/June (London)
Telstar
3/Sept (Barcelona)
1 reference ?

14. Piping installation Integration Calculations
Make 3D models (Alexander Bitadze)
Approval of the integration (Olga Beltramello and Tatiana Klioutchnikova)
Calculations
Stress and supports calculations (Mael Devoldere and Delio Duarte Ramos)
Earthquake calculations
Purchase of material (Kirill Egorov)
Supports
Pipes, accessories and insulation
Preparation of material
Mechanical preparation for welding (Said Atieh)
Cleaning of the pipes before installation (Marina Malabaila)
Installation (Daniel Lefils and Elena Perez Rodriguez)
Installation of supports (Jan Godlewski team)
Installation of pipes and insulation (Said Atieh)

15. Integration drawings ATLICSC_0073 ATLICSC_0074 ATLICSC_0075

16. Other tasks (in parallel)
Control
UNICOS for the Thermosiphon and Chiller.
Draft for the functional analysis in progress.
Infrastructure
Search for primary water for the chiller system.
Upgrade of the electrical network for standard and diesel power supply.

17. Planning Time Design and integration Chiller system and brine circuit
Autumn 2010
Winter 2010/2011
Spring 2011
Summer 2011
Autumn 2011
Winter 2011/2012
Design and integration
Complete basic design and integration
Chiller system and brine circuit
Invitation to tender process
Award the contract
Manufacture
Supply and installation
Tank/condenser
Detailed design
Demmande d’offre + purchase
C3F8 piping
Supports and earthquake calculs
Purchase of material
Installation of the pipes
By-pass
Installation in the cavern
Instrumentation and control
Functional analysis
Purchase of hardware
Programming
Electricity and Pneumatic installations
Study the requirements
Improve UPS/Standard supply if needed
Commissioning
Tests with by-pass

18. Cost estimation Description Cost estimation Primary water 40
40 
Chiller system
800 
Brine circuit
50 
Tank/condenser 50
C3F8 piping
Piping
180
Recuperation heat exchanger 15
Heaters before HEX - 15 kW
Heater after the HEX - 60 kW 20
Test dummy load 10
By-pass
By-pass piping
Dummy load - 25 kW
Instrumentation
Pneumatic system
Control
Civil engineering
Roof modification
PJAS
100
Contingency
Total
1500

19. Conclusions
The Mini-Thermosiphon has proved the working principle for the consolidation.
The 2 kW Thermosiphon will provide results for the control and detailed design.
The Full Scale Thermosiphon is already well advanced
Basic design is done
Planning and cost estimation have been presented
Purchase has started
Piping installation has been organized

20. Thank you for your attention
Any
questions ?