Which Strategy Saves the Most Energy for Stratified Water Heaters?

The operation of water heating uses a substantial amount energy and is responsible for 30% household’s overall electricity consumption. Determining methods reducing demand crucial countries such as South Africa, where supply almost exclusively electrical, 88% it generated by coal, deficits cause frequent blackouts. Decreasing the consumption tanked heaters can be achieved standing losses thermal hot used. In this paper, we evaluate various energy-saving strategies that have commonly been used determine which strategy best. These include optimising schedule, lowering set-point temperature, volume used, installing additional insulation. results show best was providing optimal control element, savings 16.3% were achieved. This study also determined magnitude heavily dependent on usage intensity seasonality.