Abstract
Almost all single-family detached houses in Canada consume enormous electrical energy for space heating and domestic hot water (DHW) purposes. There are many 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 to the main tank because solar energy is intermittent. The sizing of solar photovoltaic and collector, tank, heat pump are essential to design an effective system based on the system energy consumption. The existing house is just a conventional house where space and water heating are provided by the grid electricity only. In this research, two possible ways of thermal energy storage systems have been designed for a residential single-family house with solar collector and solar photovoltaic. It is proved that the proposed PV based energy storage system is highly suitable considering lower cost, high output power, flexibility, and easy installation.
Highlights
Solar PV installation in Canada is rapidly growing
Garcia et al [14] mentioned that the solar collector based domestic hot water (DHW) system performance depends on water flow rate, draw time and duration, city water temperature, control of water circulation loop, and system layout
The stored hot water carried to the radiator for space heating purposes and to the hot water taps
Summary
Solar PV installation in Canada is rapidly growing. Currently, the residential and commercial solar breakeven is comparatively much less than the grid electricity prices, for example, the solar energy cost is 6.8 cents/kWh average whereas the grid electricity price is 12 cents/kWh [1]. Among all methods of power generation in Canada, solar energy is contributing more than 1%, and the total generation is more than 3000 MW [4]. This heat energy can be used to provide domestic hot water (DHW) supply, and space heating purposes as almost all Canadian single-family houses are using electricity for both. Because of several advantages nowadays, the active control of the integrated system with photovoltaic thermal (PVT) is used to a large extent to reduce the energy mismatch between supply and demand through a controller [7]. Based on the Government of Canada, the solar contribution will increase to around 5% by 2025, which will significantly help to reduce the CHG emission [9]
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