Industrial Research And Consultancy Centre

LN2 Plant – 50LPH (StirLIN-4)

 

Chiller

 

Cooling capacity48 kW
Refrigerant                                                                                            R407C
Suction/Discharge pressure4.2/14 barg
Suction temperature11.7℃

                                                                             

Cryogenerator

Cryogenerator power45 kW
Production capacity50 lph
Refrigeration capacity   4.4 kW@65K
Working gasHelium
Filling pressure22 barg@50Hz
Liquid nitrogen purity>99%

 

Air compressor

Compressor typeScrew
Motor power                                                                                           25
Max Working pressure12 barg

 

LN2 Plant – 100LPH (StirLIN-8)

Chiller

Cooling capacity                                                                                   108 kW
Refrigerant                                                                                            R410A
Suction/Discharge pressure10/27 barg
Suction temperature11.7℃

 

Cryogenerator

Cryogenerator power90 kW
Production capacity100 lph
Refrigeration capacity   8.8 kW@65K
Working gasHelium
Filling pressure22 barg@50Hz
Liquid nitrogen purity>99%

 

Air compressor

Compressor typeScrew
Motor power                                                                                           45
Max Working pressure12 barg

 

Liquid Helium Plant :

Produces liquid helium from helium gas. Liquid helium can be used for cooling down to 2 K.

 

Caution

Users are instructed to bring their own containers and with some liquid helium in the container.

  1. Liquid Nitrogen Plant :

The Stirling Liquid Nitrogen plant (StirLIN-4) is used to produce liquid nitrogen. The nitrogen is separated from compressed ambient air (consisting of 78 % nitrogen) using adsorption desorption process. Subsequently, the nitrogen is condensed and stored as liquid in storage container under positive pressure.

  1.  
    1. Main parts of helium plant 
      1. Air compressor
      2. Air vessel
      3. Dryer
      4. Pressure Swing Adsorption system
      5. Nitrogen Vessel
      6. Cryogenerator
      7. Dewar

 

  1. Liquid Helium Plant :

Liquefier (Cold Box)

The process gas (Helium) compressed and isentropic expansion in an open cycle via Turbo-Expanders until the Helium temperature falls below inversion temperature. Then isenthalpic expansion in Joule-Thomson device and helium gas is liquefied, stored in dewar at slightly above atmospheric pressure.

  1.  
    1. Main parts of helium plant 
      1. Recirculation compressor
      2. Oil removal System
      3. Buffer Vessel
      4. Cold Box
      5. Dewar
      6. Recovery gas bag
      7. Recovery compressor
      8. Dryer
      9. Helium Storage Cylinders
 
 
 
 

The users are requested to apply in IRCC central facility registration (https://drona.ircc.iitb.ac.in/NewFac/CentralFacilityIndex.jsp?facilityCode=ME007) either before coming to collect the liquid nitrogen or at the time of collection. Faculties, Students, Project staff can apply in this portal. As of now Institute staff are not allowed. For the students who are not able to apply, can ask their friends to lab mates to apply and choose the faculty of the students who required LN2. In the mean time they can mail software@ircc.iitb.ac.in their issue & get it rectified.