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The elevation and ground floor plan of a terraced house constructed in an urban location are shown - Leaving Cert Construction Studies - Question 6 - 2021
Question 6
The elevation and ground floor plan of a terraced house constructed in an urban location are shown. The external walls are of timber frame construction with a render... show full transcript
Worked Solution & Example Answer:The elevation and ground floor plan of a terraced house constructed in an urban location are shown - Leaving Cert Construction Studies - Question 6 - 2021
Step 1
With reference to the design shown, discuss using notes and freehand sketches, three features of the design that contribute to the house having a low environmental impact.
Answer
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Timber Frame Construction: The house utilizes timber frame construction sourced from local materials. This design choice reduces transport emissions and carbon footprints, contributing to a lower environmental impact by minimizing local air pollution.
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Energy Efficient Insulation: High levels of insulation are integrated into the construction. This not only reduces the need for heating in colder months but also maintains a comfortable indoor climate by minimizing heat loss through the building’s exterior envelope.
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Renewable Heat Source: The house is equipped with a renewable heat source for central heating. This contributes to its low environmental impact by relying on sustainable energy systems that further reduce carbon emissions during occupancy.
Step 2
Discuss two features that could be added to reduce the house operation energy use.
Answer
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Install Photovoltaic (PV) Panels: Adding PV panels would harness solar energy to generate electricity, significantly reducing the household's dependency on non-renewable energy sources. By installing panels on a south-facing surface, the efficiency of energy capture can be maximized.
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Mechanical Heat Recovery Ventilation (MHVR) System: Implementing an MHVR system would reduce the energy consumption for heating by efficiently managing the air exchange process. This feature could recover heat from outgoing stale air and use it to warm incoming fresh air, thus improving the overall energy efficiency of the house.
Step 3
Discuss in detail two advantages of designing a house to have low operational energy use when the house is built.
Answer
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Environmental Benefits: Designing a house with low operational energy use effectively reduces the carbon footprint by minimizing reliance on fossil fuels and lowering greenhouse gas emissions. This contributes positively to the environment and helps combat climate change.
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Cost Efficiency: Low operational energy designs lead to significant savings on energy bills over time. By utilizing renewable energy sources and improving insulation, homeowners can minimize their expenditures on heating and electricity, allowing for more sustainable living.