Intelligent rapid-response water heater for supplementing outputs from a domestic hot water store

Abstract

A modification to a conventional domestic hot water system is proposed, in order to reduce wastages of heated water and provide a more convenient means for consumers to obtain hot water at the temperature they require. A laboratory simulation of the behaviour of such an all-electric hot water supply, for a four-person single-family dwelling, reduced the proportion of hot water wasted from 32% to 8% of the amount required and yielded daily energy savings of 11%. The associated financial savings depend mainly upon the price per litre of water and the hot water temperature requirements of individuals.