| |
| Large Pumping Speed Pump: To pump Space Simulators & Fusion Reactors |
| |
|
| Content: |
Space research, Fusion reactors and many other technological areas require large pumping speed to pump large volumes or to handle voluminous exhaust gases. Space simulation chambers like Chamber A at Johnson Space Center in Houston (used in testing of James Webb Space Telescope, the “pathfinder”) with a volume of of 11330 cubic meter require about 22680 kilograms of air to be pumped off. [Ref http://www.nasa.gov/]. ITER an experimental fusion reactor requires 400 x103 L/sec pumping speed to pump about 800 cubic meter of volume[Ref http://www.iter.org/]. Other space applications for its various space simulation facilities like Magneto-plasma-dynamic (MPD) thrusters, Electrode less thrusters and low flow propulsion test bed, Pulsed Plasma Thrusters , large scale space simulation test facilities for testing the satellite payloads and components etc, require pumping speed in the range of > 60,000 L/s.. In an attempt to target the development of large scale pumping speed for exhaust gases like hydrogen and Helium gases from Fusion reactor, a cryoadsorption cryopump is developed in India at Institute for Plasma Research. The pump uses activated carbon sorbents coated on indigenously built hydro-formed cryopanel.
Hydroformed cryopanels which are used as thermal shrouds inside vacuum chamber of space simulator are now fabricated, tested for their leak tightness and uniform temperature distribution in India (Earlier the shrouds/thermal shields/bubble panels were imported from foreign countries).The shrouds carrying cryogen simulate the space environment when satellite enters its orbit and faces thermal environment difference and the thermal impact caused as orbital spacecraft move in and out of sunlight. Institute for plasma research in its project of developing cryoadsorption cryopump developed these panels of different shapes and sizes. Industry transfer of the technology has been done and now India is self suffiecient with providing the panels/thermal shrouds/bubble panels/dimple plates to the Space research programe and various other applications requiring the same.
The developed cryoadsorption cryopump at Intitute for plasma Resrach can provide pumping speed of 2 to 5 L/s-cm2 with cryopanel surface area of 3.2 m2 coated with activated carbon.It was tested to give pumping speed of 70,000 L/s for Helium and 1,50,000 L/s for Hydrogen in the pressure range of 10-4 to 10-5 mbar. This paper describes the journey towards development of cryoadsorption cryopump and pumping characteristics of the developed pump. The technology is now available with India |
| Id: |
70 |
| Place: |
VECC 1/AF, Bidhan Nagar Kolkata - 700008
Room: Meghnad Saha Auditorium, SINP-VECC Campus |
| Starting date: |
|
| Duration: |
00' |
| Primary Authors: |
Ms. GANGRADEY, Ranjana (Institute For Plasma Research, Bhat , Gandhinagar, Gujarat) |
| Co-Authors: |
Mr. MUKHERJEE, samiran (Institute For Plasma Research, Bhat , Gandhinagar, Gujarat)
Ms. AGARWAL, Jyoti (Institute For Plasma Research, Bhat , Gandhinagar, Gujarat)
Mr. MISHRA, jyoti shankar (Institute For Plasma Research, Bhat , Gandhinagar, Gujarat)
Mr. PANCHAL, Paresh (Institute For Plasma Research, Bhat , Gandhinagar, Gujarat)
Mr. NAYAK, Pratik (Institute For Plasma Research, Bhat , Gandhinagar, Gujarat) |
| Presenters: |
Ms. GANGRADEY, Ranjana |
| |
| Included in session: |
Poster Session 2: Abstract ID 11,33,34,35,36,38,39,40,43,48,52,54,59,66, 67,70,71,78,88,89,90,92,94,100,102,105,107,108, 109,111,112,115,116, 120,121,124,125,127,128,129,131,190 |
| Included in track: |
Cryocoolers / Cryopumps / Cryogenics Systems |
| |
|
|
|
| |
| |
|
|
Powered by CERN Indico
|
http://indico.vecc.gov.in/indicoevent/44
|
Last modified: 18 July 2017 11:58