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If your current fridge is just about a decade old, a new model with an energy star rating will unquestionably be more efficient so that you can run, saving on your power bill as well as cutting your household carbon emissions. Today's chillers use a reduced amount of energy than outdated types and signify greater bargain in the long term. All new refrigerators have to minimise environmental harm and must pass industry standards before achieving their energy rating so before you choose to repair your old fridge, consider its impact on your own energy use.
Hydro turbines, the oldest and also the mostly used renewable energy source, hold the highest efficient of power conversion process. The potential head of water is available next to the turbine, so there aren't any energy conversion losses, exactly the mechanical and copper losses inside the turbine and generator and the tail end loss. The efficiency is inside the range of 85 to 90 %.
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