FIELD: aerospace transport facilities. SUBSTANCE: heat insulation has porous insulating body forming many small cells from material having low heat conductivity, heat absorbing liquid which ensures endothermic reaction in presence of catalyst and finely divided catalyst of reaction evenly distributed in porous body. Heat absorbing liquid is para hydrogen; granulated ferric nitrate is used as catalyst, liquid para hydrogen changes to gaseous para hydrogen and then changes to orthohydrogen in presence of catalyst in form of ferric nitrate which absorbs heat due to evaporation heat and endo thermic catalytic reaction and decreases transfer of heat through porous body. EFFECT: enhanced efficiency. 8 cl, 3 dwg
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