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Solar thermal systems harness the sun’s energy to heat water, offering an eco-friendly solution to reduce energy consumption. These systems feature solar collectors, typically mounted on rooftops, which come in two main types: flat plate and evacuated tube collectors.
A heat transfer fluid, usually water or a water-glycol mix, circulates through the collectors, absorbing heat. This heated fluid transfers its energy to water in a storage tank via a heat exchanger, making hot water available for household use.
To ensure a consistent supply, especially on cloudy days, a backup electric or gas heater is included. While installation costs can be high, solar thermal systems are energy-efficient, environmentally friendly, and can lead to significant savings on energy bills.
Benefits of solar thermal system
Solar thermal systems offer a sustainable and cost-effective solution for heating water. By harnessing the sun’s energy, they provide several advantages for homeowners and businesses:
Energy Savings
Solar thermal systems can significantly reduce energy bills by providing free hot water, especially during sunny periods. This reduces the need for conventional energy sources like gas or electricity.
High Efficiency
Solar thermal technology is highly efficient at converting sunlight into heat, with conversion rates often exceeding those of solar photovoltaic (PV) panels.
Long Lifespan
These systems are durable and can last 20-25 years or longer with proper care, offering a long-term return on investment.
Environmentally Friendly
These systems generate renewable energy, reducing carbon emissions and reliance on fossil fuels. By using solar power, they contribute to a smaller carbon footprint and help combat climate change.
Low Maintenance
Solar thermal systems require minimal maintenance after installation, usually just annual check-ups to ensure optimal performance.
Year-Round Hot Water Supply
Solar thermal systems can be used in combination with traditional heating systems to ensure a consistent supply of hot water, even during cloudy or winter months.
F.A.Q.
Is Solar Thermal Right For Your Home?
Do you have a sunny place to put solar panels?
To maximize your solar panel system’s energy output, it should be installed in a location that receives ample sunlight. You’ll need about five square meters of roof space, ideally facing south or anywhere from east to west, with direct sunlight for most of the day. The panels don’t have to be roof-mounted—they can also be installed on a frame on a flat roof or attached to a wall.
What to do if your home isn’t suitable for solar?
Solar panels can be installed on most properties, but if you live in an apartment or condo, rent your home, or can’t install them on your roof, there are still alternatives. Community solar gardens have become a popular option for those who either cannot or prefer not to install solar panels on their residences.
Is your current boiler compatible with solar water heating?
Many traditional boiler and hot water cylinder systems can work with solar water heating. However, if you have a combination (combi) boiler and do not currently have a hot water cylinder, a solar hot water system may not be compatible.
Source: Energy Saving Trust
Can I get a grant for installing a solar thermal system?
You might qualify for payments for the heat produced by your solar thermal system through the government’s Renewable Heat Incentive (RHI). Depending on the survey results, you could partially or fully recover the installation costs.
Find out more here.
