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The drawing shows a single storey house - Leaving Cert Construction Studies - Question 6 - 2016
Question 6
The drawing shows a single storey house. The external walls are of insulated timber frame construction and are finished externally with rendered cement board and ced... show full transcript
Worked Solution & Example Answer:The drawing shows a single storey house - Leaving Cert Construction Studies - Question 6 - 2016
Step 1
Discuss in detail, using notes and freehand sketches, three features of the design that contribute to the house having low environmental impact.
Answer
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Sustainable Materials: The house utilizes timber frame construction which is a renewable material compared to traditional concrete. This choice significantly reduces carbon emissions in the building process, allowing for a lower environmental footprint. Timber can also help with carbon sequestration, thus contributing positively to the environment.
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Thermal Efficiency: The design incorporates insulated walls which enhance thermal performance. The use of high-performance glazing in the windows aids in minimizing heat loss during winter and retaining coolness in summer. This leads to reduced energy consumption for heating and cooling.
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Natural Ventilation: The layout of the house promotes natural ventilation, which reduces the reliance on artificial heating and cooling systems. The use of strategically placed windows and airflow corridors ensures that fresh air circulates throughout the home, maintaining comfort levels without excessive energy use.
Step 2
To meet the Nearly Zero Energy Building (NZEB) requirements, the production of on-site renewable energy is recommended. Using notes and freehand sketches show one means of generating on-site renewable energy for the dwelling house.
Answer
One effective method for generating on-site renewable energy is the installation of photovoltaic (PV) panels on the roof of the house. This approach harnesses solar energy and converts it into electricity, which can be used to power the household appliances.
Key Advantages:
- Grid Independence: By generating their own electricity, homeowners can become less dependent on the grid, thus saving on energy costs.
- Sustainability: Solar energy is abundant and renewable, contributing to lower carbon emissions and promoting sustainability within the home.
The PV panels can be connected to a battery system to store excess energy produced during peak sunlight hours for use during non-sunny periods.
Step 3
Discuss in detail two advantages of generating renewable energy on-site.
Answer
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Sustainability and Environment: Generating renewable energy on-site aligns with sustainable practices, significantly reducing the household's carbon footprint. By utilizing resources like solar or wind energy, homeowners can contribute to a decrease in greenhouse gas emissions. This not only benefits the immediate environment but also addresses global climate change efforts.
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Cost Efficiency: On-site renewable energy generation often leads to long-term savings on utility bills. Once the initial investment in renewable technology, such as solar panels, is made, the ongoing energy costs can be minimal. Furthermore, any surplus energy generated can sometimes be sold back to the grid, creating an additional source of income for the homeowner.