Liquid Helium plant and Nitrogen Plant

External users: registration to be carried out only through I-STEM portal
Additional information about sample and analysis details should be filled in the pdf form provided in the I-STEM portal under “DOWNLOAD CSRF”

Internal users (IITB): registration to be carried out only through DRONA portal
Additional information about sample and analysis details should be filled in the pdf form provided here.

Make
Stirling Cryogenics, Netherlands
Model
StirLIN-4 & StirLIN-8
Facility Status
Working
Date of Installation
Facility Management Division
Centre for Sophisticated Instruments and Facilities (CSIF)

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Category

  • Services » Service

Booking Details

Slot Booking Link
Click here for Internal User Booking!
Booking available for
Internal
Available Equipment/ Mode of use
LN2 to be provided to users in LN2 cryogenic dewar

Facility Management Team and Location

Facility In Charge
Prof. Milind D. Atrey
Email : matrey@iitb.ac.in
Contact: +91-22-2576-7522 ,
+91-22-2572-6875
Co-convenors
NA
Facility Manager
NA
Facility Operator
Prabhakara S, Email: prabhakaras@iitb.ac.in, 9742311564
Praveen Topagi, Email: praveentopagi@iitb.ac.in, 8850964561
Facility Management Members
Prof. Ramesh Kumar Singh
Prof. M Senthil Kumar
Prof. A V Mahajan
Prof. Kantimay Das Gupta
Prof. Subhabrata Dhar
Prof. Maheswaran S.
Prof. Rodney A. Fernandes
Prof. Himanshu J. Bahirat
Prof. Dipanshu Bansal
Department
Mechanical
Lab Email ID
prabhakaras@iitb.ac.in
Facility Location
Refrigeration and Cryogenics Lab, N-4 bay, Mechanical Engineering Department, I.I.T. Bombay, Powai, Mumbai - 400076
Lab Phone No
+91-22-2159 3719

Facility Features, Working Principle and Specifications

Facility Description

Facility Description

Liquefaction of Nitrogen gas

Features Working Principle

Features :

LN2 Plant – (StirLIN-4) Production Capacity 50LPH, Refrigeration capacity 4.4 kW@65K 

  • Chiller Cooling capacity:48 kW 
  • Cryogenerator Motor power: 45 kW 
  • Working gas: Helium, Filling pressure 22 barg@50Hz 
  • Liquid nitrogen purity >99% 
  • Air Compressor type: Screw, Compressor Motor power 25kW
  • Max Working pressure of air compressor 12 barg 

LN2 Plant – (StirLIN-8) Production Capacity 100LPH, Refrigeration Capacity 8.8kW@65K

  • Chiller Cooling capacity: 108 kW 
  •  Cryogenerator motor power: 90 kW 
  •  Working gas Helium Filling pressure 22 barg@50Hz 
  • Liquid nitrogen purity >99% 
  • Air compressor Compressor type: Screw, Motor power 45kW
  • Max Working pressure of Air compressor 12 barg

Working principle: 

Liquid Nitrogen plant :

The Stirling Liquid Nitrogen plant is used to produce liquid nitrogen. The nitrogen is separated from compressed ambient air (consisting of 78 % nitrogen) using the Pressure Swing Adsorption (PSA) process. Then the nitrogen gas is liquefied using the cooling effect produced by the cryogenerator. Subsequently, the liquid nitrogen is stored as liquid in a storage container under positive pressure.

Main parts of the Nitrogen plant 

  • Air compressor
  • Air vessel
  • Dryer
  • Pressure Swing Adsorption system
  • Nitrogen Vessel
  • Cryogenerator
  • Dewar

 

 

 

Body Specification

NA

Sample Preparation, User Instructions and Precautionary Measures

Instruction for Sample Preparation

Users need to bring LN2 cryogenic dewar

User Instructions and Precautionary Measures

Users should follow Cryogenics safety requirements.

Charges for Analytical Services in Different Categories

Usage Charges

Rs. 12/- per Liter of LN2

Applications

  • Cryopreservation of cells and microbes. 
  • Liquid Helium plant for pre-cooling 
  • NMR to prevent heat leaks 
  • High-temperature superconductors 
  • Material Property testing at Low temperature etc.

Sample Details

Chemical allowed

NA

Allowed Substrate

NA

Gases allowed

NA

Substrate Dimension

NA

Target dimension

NA

Contamination remarks

NA

Precursors/ Targets allowed

NA

SOP, Lab Policies and Other Details

Publications

  1. Performance evaluation of sintered and stacked mesh regenerator for Stirling cycle based LN2 plant. Praveen Topagi, S. Prabhakara, M. D. Atrey, S. L. Bapat. NSCS-28, IIT Kharagpur 2022
  2. Case study of sintered regenerator performance in StirLIN-4 nitrogen liquefier. Praveen Topagi, S. Prabhakara, S. L. Bapat, M.D. Atrey. NSCS-27, IIT Bombay, 2019