Novel linear solar water heating system for Mediterranean climates

Abstract

The hot water requirements of the typical Maltese dwelling are mainly met by an electrically powered hot water boiler; the capacity of which is determined by the end user's hot water requirements. Such systems place an added burden on the islands' national fossil fuel power generation system. At an individual, family/homeowner level, solar water heaters (SWH) provide the most economical way to reduce the electricity consumption and carbon footprint. A single SWH unit can provide the equivalent of over 1,650kWh in energy savings per year. Unfortunately not every household has the available roof space and in some cases SWH are not permitted or could be undesirable due to the possible visual impact. Also, given that over 50% of households are apartments, the roof area is becoming less available to put traditional solar water heaters for every family.