부산대학교 도서관

Examined are the effects of residential solar water heating with electric auxiliary on the load, especially during peak periods, of summer peaking electric utilities. Twenty-eight houses in Austin, Texas - half with solar water heating and half without - were monitored for their instantaneous electricity consumption. A comparison of the average daily consumption profiles of the solar and nonsolar houses show that solar water heating greatly reduces the electric demand compared to conventional electric water heating during the late afternoon/early evening peak experienced by the utility in the summer. It also does not adversely affect the annual load factor for the utility. Thus, such utilities should implement policies to encourage solar water heating.