Design and analysis of a solar water heating system for a detached house in newfoundland

Almost all single-family detached house in Canada consume huge electricity for space heating and domestic hot water (DHW) purposes. There are a lot of possibilities to design an energy efficient house. A solar water heating system can be used for domestic water and space heating. Water temperature can be kept constant always by connecting a heat pump or oil burner because the solar energy is intermittent. Proper and optimized solar collector design, tank design, heat pump selection, house insulation, total demand calculation in each section are very important. An energy efficient house has been proposed with water heating and space heating system and compared with the existing system. Simulation has been done by using PolySun software. It is found that by implementing the proposed system (model 2), the tested house or similar Canadian single-family house can save a large amount (38.4%) of energy each year.