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"Worldwide, buildings are responsible for over 40% of the total primary energy use and related greenhouse emissions - Leaving Cert Construction Studies - Question 10 - 2020
Question 10
"Worldwide, buildings are responsible for over 40% of the total primary energy use and related greenhouse emissions. Through standards and energy efficiency programs... show full transcript
Worked Solution & Example Answer:"Worldwide, buildings are responsible for over 40% of the total primary energy use and related greenhouse emissions - Leaving Cert Construction Studies - Question 10 - 2020
Step 1
Discuss the above statement in detail.
Answer
The statement underscores the significant role buildings play in global energy consumption and greenhouse gas emissions, accounting for over 40% of total primary energy use. This highlights the urgent need for energy efficiency in both new constructions and retrofitting of existing structures.
Various measures such as new building standards and energy efficiency programs have been implemented across numerous countries to improve the energy performance of buildings. Key regulations like the Energy Performance of Buildings Directive (EPBD) aim to promote energy efficiency and sustainability within the built environment. For instance, in Ireland, the Building Regulations set forth stringent energy performance standards to minimize energy consumption and enhance the sustainability of buildings.
Moreover, initiatives like the Building Energy Rating (BER) certification encourage developers and homeowners to conduct energy audits and implement retrofitting measures aimed at improving energy performance. Highly efficient technologies, such as heat pumps, solar water heating, and advanced insulation techniques, are essential in reducing energy loads on buildings.
Furthermore, the design phase should focus on materials and construction methods that prioritize sustainability, ensuring that buildings can effectively utilize renewable energy sources. This includes a comprehensive approach to energy management at every stage of building design, implementation, and operation.
Overall, enhancing energy efficiency in the built environment is crucial in mitigating climate change and achieving sustainable development goals.
Step 2
Propose three best practice guidelines that would ensure all buildings are retrofitted in the most sustainable way possible to minimise their primary energy use and improve their energy performance.
Answer
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Retrofitting for Energy Efficiency: It is recommended to evaluate and implement retrofitting measures on existing buildings that can significantly reduce annual heating requirements and carbon dioxide emissions. This might involve updating insulation, installing energy-efficient windows, and incorporating renewable energy technologies like solar panels.
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Adopting Whole-System Design Approaches: Utilize a holistic approach to retrofit buildings, ensuring that all components of the building systems are considered. This means integrating actual energy systems into building designs that promote higher performance while ensuring compliance with national energy standards.
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Continuous Monitoring and Improvement: Implement a system for ongoing monitoring of energy usage in retrofitted buildings. This can include the use of smart meters and energy management systems to track performance and identify areas for further enhancement, thereby allowing for continuous optimization of energy efficiency.