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Limited By:	Subject = Nearly Zero Energy Buildings;

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Displaying Results 1 - 5 of 5 on page 1 of 1

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Achieving nearly zero-energy buildings - A lifecycle assessment approach to retrofitting buildings (2019)

Moran, Paul; Goggins, Jamie; Hajdukiewicz, Magdalena

Achieving nearly zero-energy buildings - A lifecycle assessment approach to retrofitting buildings (2019)

Moran, Paul; Goggins, Jamie; Hajdukiewicz, Magdalena

Abstract:

It is now widely recognised in the academic and business worlds that energy efficiency in buildings provides significant environmental and economic opportunities, but also challenges. The building sector offers considerable opportunities to reduce Europe’s energy consumption and carbon emissions. With the percentage of new buildings representing 1% of the total building stock and the low efficiency levels of the older building stock, retrofitting is recognised as the most immediate, pressing, and cost effective mechanism to reduce energy consumption and carbon emissions in the building and construction sector. It is necessary to double or triple the current retrofitting rate to reach EU short and long term energy reduction goals. However, given the age, diversity, size of the Irish and EU building stock, and the economic variables associated, retrofitting to meet sustainability targets on time represents a big challenge. This paper focuses on the current findings on the most effecti...

http://hdl.handle.net/10379/15129

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Lifecycle environmental and economic performance of nearly zero energy buildings (NZEB) in Ireland (2019)

Goggins, Jamie; Moran, Paul; Armstrong, Alan; Hajdukiewicz, Magdalena

Lifecycle environmental and economic performance of nearly zero energy buildings (NZEB) in Ireland (2019)

Goggins, Jamie; Moran, Paul; Armstrong, Alan; Hajdukiewicz, Magdalena

Abstract:

Directives in the European Union are ensuring that buildings in this region are moving towards nearly zero energy buildings (NZEB). For countries like Ireland, which has a temperate oceanic climate, a key to achieving NZEB is to have high thermal and air tightness performances of the building envelope. Consequently, as the operational energy of the building reduces, the embodied energy (and embodied global warming potential) typically increases as a proportion of the lifecycle energy of the building due to increased embodied energy of the building envelope and the lower operational energy. In order to assess if a design strategy is in fact sustainable, it is becoming essential to evaluate environmental and economic LCA of building design strategies. This paper presents the outcomes of a number of case study buildings in Ireland, which focuses on the full environmental and economic lifecycle assessment of buildings to assess the impact changes in building regulations are having on t...

http://hdl.handle.net/10379/15115

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Retrofit solutions for Irish building stock: The impact of human behaviour (2019)

Moran, Paul; Goggins, Jamie; Hajdukiewicz, Magdalena; Rau, Henrike

Retrofit solutions for Irish building stock: The impact of human behaviour (2019)

Moran, Paul; Goggins, Jamie; Hajdukiewicz, Magdalena; Rau, Henrike

Abstract:

Retrofitting buildings is recognised as the most immediate, pressing, and cost effective mechanism to reduce energy consumption and carbon emissions in the building and construction sector. It is necessary to double or triple the current retrofitting rate to reach the European Union (EU) short and long term goals of 20% energy reduction by 2020, and 80- 95% CO2 reduction by 2050. Boosting confidence in retrofitting buildings to a lower energy efficiency among all different stakeholders in the building value chain is essential for uptake of energy efficiency measures in the market. However, technical interventions alone have lower impact and are more expensive to implement if carried out in isolation. Thus, it is necessary to investigate the behavioural habits and attitudes of people towards energy and carbon consumption, and if these are altered, to establish the energy savings that can be made. This paper presents the preliminary results of the data collected in surveys carried out...

http://hdl.handle.net/10379/15131

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Super-insulate or use renewable technology? Life cycle cost, energy and global warming potential analysis of nearly zero energy buildings (NZEB) in a temperate oceanic climate (2019)

Moran, Paul; Goggins, Jamie; Hajdukiewicz, Magdalena

Super-insulate or use renewable technology? Life cycle cost, energy and global warming potential analysis of nearly zero energy buildings (NZEB) in a temperate oceanic climate (2019)

Moran, Paul; Goggins, Jamie; Hajdukiewicz, Magdalena

Abstract:

There are numerous strategies available to design and construct a low energy or nearly zero energy building (NZEB). However, the design strategy for a building depends on a high number of factors including location, climate, cost, available resources, etc. For instance, for countries like Ireland, which have a temperate oceanic climate, a key to achieving NZEB is a high thermal and air tightness performance of the building envelope, installing highly efficient space and water heating systems, and utilising renewable technologies for energy and heat generation. The challenge is to find the best combination of design strategies that would tackle the energy performance problems of a particular building. For example, is it better to design a super-insulated building with minimum heating requirements, or provide less insulation but install a large amount of renewable energy sources? This paper presents the outcomes of a number of case study buildings in Ireland, which focus on the life ...

http://hdl.handle.net/10379/15116

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Towards nearly zero energy buildings: The interrelationships of materials, people and operational energy demand practices for residential buildings in Ireland (2020)

Moran, Paul

Towards nearly zero energy buildings: The interrelationships of materials, people and operational energy demand practices for residential buildings in Ireland (2020)

Moran, Paul

Abstract:

To combat the energy demand and global warming potential emissions of the building sector, the European Union has made mandatory the introduction of nearly zero energy buildings (nZEBs) in all its member states. Starting from the end of 2020, all new buildings or those receiving significant retrofit must show a very high energy performance standard with energy performance levels based on the cost-optimal framework methodology. Similarly, this is a requirement for all public buildings from the end of 2018. The population of Ireland is expected to increase by around one million people to almost 5.7 million people by 2040, requiring at least an additional half a million new homes. Additionally, 1.9 million housing units in Ireland are required to be retrofitted for the Irish national housing stock to be considered nZEB standard. Thus, work on approximately 2.5 million residential homes is required to achieve an Irish nZEB housing stock by 2040. Moreover, the role of people occupying bu...

http://hdl.handle.net/10379/16233

Displaying Results 1 - 5 of 5 on page 1 of 1