Energy is the need of life in this modern era and solar energy provides a cheap and vast source of renewable energy that is never going to exhaust. Using this technique, the small sized solar chargers are developed for various devices especially for cell phones, in order to give the user a capability to stay in touch with their closed ones and call for help in an emergency.

Though the procedure of refrigeration in gas powered refrigerator is little complicated, but its so much effective in those areas where electricity is not available. It’s not a long lasting system, and not meant to be used for long periods.