High electricity consumption
"two types of refrigeration cycle namely vapour compression cycle and vapour absorption cycle arc included in a cabin. In the presence of electricity, it is used for vapour compression cycle in which compressor works and cabin gets cooled. In the absence of electricity vapour absorption system works and also the cabin gets cooled. Thus the electricity crisis can be decreased enormously to a certain extent. "
Link: Works without electricity, affordable
Problem Scale: Worldwide
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