The Defence Research and Development Organisation (DRDO) has claimed to have made a breakthrough in developing technology for utilising solar heat harnessed during the day for heating rooms during
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/drdo-claims-breakthrough-using-solar-energy-heating-night
[2] http://admin.indiaenvironmentportal.org.in/category/author/vijay-mohan
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/tribune-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-energy
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-technology
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-air-heaters
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ladakh
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fossil-fuels
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy