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‘25% of the energy used in Ireland is used in our homes.’ (seai.ie) (i) Set out details of solar energy as an energy supply source to the home - Leaving Cert Home Economics - Question 1(c) - 2022
Question 1(c)
‘25% of the energy used in Ireland is used in our homes.’ (seai.ie) (i) Set out details of solar energy as an energy supply source to the home. Refer to: - a system... show full transcript
Worked Solution & Example Answer:‘25% of the energy used in Ireland is used in our homes.’ (seai.ie) (i) Set out details of solar energy as an energy supply source to the home - Leaving Cert Home Economics - Question 1(c) - 2022
Step 1
a system used in the home to utilise solar energy
Answer
Solar photovoltaic systems are commonly used in homes to harness solar energy. These systems convert sunlight into electricity using semiconductor materials, specifically solar PV batteries. In addition, a passive solar architecture can be applied by orientating a house to maximize sunlight exposure, installing large glass windows on the south side to capture maximum sunlight, and utilizing solar heating for water and space.
Step 2
merits of using solar energy
Answer
Using solar energy has several benefits, such as water heating and considerable savings on energy bills over time. Furthermore, integrating solar energy can help reduce energy consumption and dependence on fossil fuels, leading to lower operating costs and minimal environmental impact due to reduced carbon emissions. By using solar energy, homeowners can also enhance energy security by becoming more self-sufficient.
Step 3
sustainability.
Answer
Sustainability is a core principle of solar energy. The sun is a renewable energy source, providing a constant and infinite supply of energy. By utilizing solar energy, households can greatly reduce their reliance on non-renewable resources, helping to mitigate climate change and resource depletion. This can contribute to a sustainable future by meeting energy requirements with minimal environmental impact.
Step 4
Explain, giving an example, the underlying principle of a method of insulation used in the home.
Answer
The underlying principle of insulation in homes revolves around minimizing heat loss and maintaining comfortable indoor temperatures. Insulation materials, such as fibreglass, polystyrene, or wool, are excellent conductors of heat that prevent unwanted energy loss. For example, installing draught-proofed measures in windows and doors, along with using double or triple glazing, effectively reduces heat exchange and enhances energy efficiency.