Design of vacuum impregnation chamber for soaking of Gulabjamun in sugar syrup and optimization of wall thickness by Finite Element Analysis (FEA)

Design of vacuum impregnation chamber for soaking of Gulabjamun in sugar syrup and optimization of wall thickness by Finite Element Analysis (FEA)



Maheshkumar G. , Menon Rekha Ravindra



The application of vacuum impregnation technique for soaking of
Gulabjamoon in sugar solution was conceptualized and the equipment was
designed and developed. Vacuum impregnation unit (VIU) was operated
under vacuum and hence the design of its wall thickness was of critical
consideration. VIU facilitated rapid soaking of Gulabjamun in sugar
syrup under full vacuum in cyclic process. VIU is cylindrical in
geometry, designed to work at 65-80 ºC at 5 kPa pressure (vacuum) on the
inside and was exposed to atmospheric pressure on the outside. This
leads to compressive forces acting on inside of the cylinder wall. The
shell thickness will have direct bearing on stresses developed. There
will be implosion (due to compressive forces) of VIU when Von Mises
stress generated is more than yield stress of stainless steel (205 MPa).
Wall thickness of cylinder of VIU was optimized by Finite Element
Analysis (FEA) by modeling and simulation using Pro/ENGINNER. ANSYS-14
was used for analysis of Von Mises stress, deformation and factor of
safety. The wall thickness of shell was analyzed by hyper tetrahedron
meshing. To validate, design software developed by ASME was used for
shell thickness determination. The model prediction was shown to be in
good agreement with the analytical calculation. The FEA resulted in Von
Mises Stress of 135.79 Mpa, deformation of 1.55 mm and factor of safety
of 1.5. VIU was fabricated as per FDA C-GMP standards from 4.00 mm thick
AISI-316 SS material. The working drawings were developed and actual
fabrication was carried out adopting the prescribed sanitary standards.
The unit was subjected to various safety tests and it successfully
passed out all of them. Satisfactory production of Gulabjamoon was
carried out in the newly designed and developed equipment resulting in a
product of excellent quality confirming validity of the design. 



10.22161/ijeab/2.1.3



http://ijeab.com/upload_document/issue_files/3%20IJEAB-DEC-2016-37-Design%20of%20vacuum%20impregnation%20chamber.pdf



http://ijeab.com/submit-paper/

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