RFORMANCE EVALUATION OF COMPOUND MULTILAYER INSULATION (77K-300K)

Authors

  • Pinaben j Chaudhari Mechanical Department, Ahmedabad institute of eng. College
  • Dhruma A. Patel Mechanical & Automobile Department, Ahmedabad institute of eng. College

Keywords:

Insulation, vacuum, Liquid nitrogen, pressure; Multilayer

Abstract

Multilayer insulation (MLI) using alternate layers of shield and spacer. In high vacuum MLI is the
most effective Cryogenic Insulation. The Investigations are centered on the influence of the number of layers
and layer density, with the cold boundary at the same temperature as liquid nitrogen. The paper Presented
theoretical and experimental investigation of the heat transfer of different MLI with different vacuum chamber
pressure. Liquid nitrogen boil of rate method is used to measure the heat transfer rate. The apparent thermal
conductivity were calculated over a wide range of temperature (77k-300k) and pressure (10-6 mbar – 103mbar).
The thermal performance of compound and Composite MLI is investigated. The temperature profile and heat
transfer through the MLI were obtained as a function of level of vacuum and vice versa.

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Published

2018-02-25

How to Cite

Pinaben j Chaudhari, & Dhruma A. Patel. (2018). RFORMANCE EVALUATION OF COMPOUND MULTILAYER INSULATION (77K-300K). International Journal of Advance Engineering and Research Development (IJAERD), 5(2), 130–136. Retrieved from https://ijaerd.org/index.php/IJAERD/article/view/2300

Issue

Vol. 5 No. 2 (2018): Volume 5 Issue 2 February 2018

Section

Articles