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India: Vacuum Tube System with PCM Storage Tank Heats Troop Shelter

Submitted by Baerbel Epp on October 28, 2016
DIHARThe Indian Defence Institute of High Altitude Research (DIHAR), a laboratory of the Defence Research Development Organisation, has successfully tested a vacuum tube collector system for space heating at extreme altitudes. The testing site, a troop shelter, was set up last year in the region of Ladakh in the northern Indian state of Jammu and Kashmir at the Chang La, a high mountain pass at 5,360 metres above sea level, and the tests were conducted there over the winter. The system stores solar heat harnessed during the day in a phase-change storage tank and uses it to keep the 90 m² shelter warm at night. During the test run, the inside of the shelter showed between 7 and 10 °C while the temperature outside was minus 30 °C.
Photo: DIHAR

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