THE OPTIMIZATION OF LAYER DENSITIES FOR MULTILAYERED INSULATION SYSTEMS BY USING ANSYS

Now-a days cryogenic insulation performance and reliability, durability are continually improving, they are more frequently used by physicists in their laboratory experiments for commercial and space applications. Cryogenic propellant storage is a crucial part of future space exploration. Efficient thermal insulation is one of the technologies for the long-duration missions. The work deals with the thermal performance of variable density multilayer insulation with different configurations and spacers. For conventional multilayer insulation blankets, it is difficult to control the layer density and the thermal insulation performance degrades due to the increase in conductive heat leak through interlayer contacts. The configuration of VDMLI was proposed by predicting the internal temperature profiles and maximizing the thermal resistance based on the basic layer model. A mathematical model will be developed to assess the temperature profile and effective heat transfer coefficient of the VDMLI. It is expected that the insulation performance of MLI could be improved considerably after replacing the regular uniform configuration with the optimized variable density configuration. Further, it is also proposed to study the effect of different spacing materials viz.., none-woven cloth, Dacron net, polyether ketone (PEEK) etc.