Application of the principles of ILS to the development of cost effective maintenance strategies for existing building stock

2003 ◽  
Vol 21 (3) ◽  
pp. 283-296 ◽  
Author(s):  
Mohamed A. El-Haram ◽  
R. Malcolm W. Horner
Keyword(s):  
Cost Effective ◽  
Building Stock ◽  
Maintenance Strategies ◽  
Existing Building

Deep renovation up to zero energy through Add-ons: the ABRACADABRA Project

2019 ◽  
Author(s):  
Annarita Ferrante ◽  
Fabrizio Ungaro ◽  
Giovanni Semprini ◽  
Lorna Dragonetti ◽  
Elettra Agliardi ◽  
...  
Keyword(s):  
Cost Effective ◽  
Urban Environments ◽  
Zero Energy ◽  
Urban Context ◽  
Building Stock ◽  
Existing Building ◽  
The Real Estate ◽  
International Projects ◽  
Eu Project ◽  
The Eu

<p>and international projects</p><p>various EU H2020 projects</p><p>Though housing is one of the most energy consumer sectors, it is currently extremely underestimated, because of a clear investment gap due to economic, social and legislative barriers. The EU project ABRACADABRA (Assistant Building to Retrofit, Adopt, Cure And Develop the Actual Buildings up to zeRo energy, Activating a market for deep renovation) is based on the idea that the real estate value increase given by the appropriate densification strategy in urban environments could be an opportunity to activate a market for deep energy renovation. To prove the effectiveness of the strategy more than 70 case studies throughout the EU cities have been assessed by means of a cost-effective analysis. Basing on the parametric variation of the different values involved (cost of construction, energy, etc.) the benefit of this strategy has been proved in the majority of the different building types and contexts.</p><p>More interestingly, the ABRA strategy has been simulated and tested outside Europe in order to verify its scalability and the possibility of considering other non-energy related benefits in the renovation of the existing building stock. A specific study on the NYC urban context has been conducted to effectively adapt the strategy and combine the global drivers of energy consumption reduction and CO<span>2</span> emission reduction with the local need of combating flood emergency and related flood-proofing measures.</p><p>The results reached by this work demonstrate how the energy retrofit trough add-ons reduces significantly the payback times of the investments, preserve soil consumption, while providing a extraordinary opportunity to enhance urban resiliency by challenging the local emergencies.</p>

scholarly journals Novel Methodology toward Nearly Zero Energy Building (NZEB) Renovation: Cost-Effective Balance Approach as a Pre-Step to Cost-Optimal Life Cycle Cost Assessment

2021 ◽  
Vol 11 (9) ◽  
pp. 4141
Author(s):  
Yovko Ivanov Antonov ◽  
Per Kvols Heiselberg ◽  
Michal Zbigniew Pomianowski
Keyword(s):  
Life Cycle Cost ◽  
Energy Savings ◽  
Cost Effective ◽  
The European Union ◽  
Zero Energy ◽  
Building Stock ◽  
Existing Building ◽  
Zero Energy Building ◽  
Selection Of

Reaching environmental targets set by the European Union (EU) requires a constant renovation of the existing building stock to nearly Zero Energy Buildings (NZEB) in a cost-optimal manner. Studies show that the renovation rate of the existing building stock is more than two times less than what is necessary to reach the targets. Furthermore, the majority of performed renovations across the EU reach just a small amount of energy savings, whereas NZEB renovations are rarely achieved. This paper proposes a methodology for the evaluation of renovation measures, aiming to provide decision support related to the selection of what to renovate and to what extent. The proposed method is rooted in the well-established cost-optimal methodology, yet it suggests a pre-step to package evaluation. This is done by means of a simplified cost-effective parameter (CEP), linking cost, lifetime, and energy savings. The methodology is demonstrated using a case study building in Denmark. The results show that the CEP provides good grounds for the compilation of single actions to packages. Further developments could focus on the sensitivity of the model inputs and integration of additional evaluation parameters to cost, such as environmental, architectural, comfort, risk, etc.

scholarly journals Seismic Policy, Operations, and Research Uses for a Building Inventory in an Earthquake-Prone City

2020 ◽  
Vol 11 (6) ◽  
pp. 709-718
Author(s):  
Ken Elwood ◽  
Olga Filippova ◽  
Ilan Noy ◽  
Jacob Pastor Paz
Keyword(s):  
Central Business District ◽  
Cost Effective ◽  
Seismic Retrofitting ◽  
Detailed Knowledge ◽  
Policy Uncertainty ◽  
Regulatory Structure ◽  
Building Stock ◽  
Existing Building ◽  
Building Inventory ◽  
The Impact

AbstractAfter the 2016 New Zealand Kaikoura Earthquake, the absence of information about the state of buildings in Wellington proved to be a source of significant policy uncertainty. Authorities did not know what damages to expect and therefore how to react, and policies needed to be formulated without a clear quantification of the risks. Moreover, without detailed knowledge of the existing buildings, it was difficult to assess what the available legal and regulatory tools can achieve and choose among them. We describe the creation of a building inventory database for Wellington initiated by the authors. This database aims to assist the generation of research on the risks, impacts, and viable solutions for reducing future seismic risk in Wellington’s central business district (CBD). The database includes structural, economic, and market information on virtually every significant building in the CBD. Its primary purposes are: to collate and provide the best available information about the expected seismic performance of the existing building stock; to assess the impact of possible multiple building failures due to a seismic event; to describe a viable cost-effective path for seismic retrofitting; and to inform the design of a regulatory structure that can facilitate this resilience-building agenda.

Multiple-Benefit Analysis of Scaling-Up Building Energy Efficiency Programs: The Case Study of Tunisia

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Moncef Krarti
Keyword(s):  
Energy Efficiency ◽  
Scale Up ◽  
Cost Effective ◽  
Scaling Up ◽  
Building Energy Efficiency ◽  
Productivity Analysis ◽  
Energy Productivity ◽  
Building Stock ◽  
Existing Building ◽  
Wide Range

Abstract This paper evaluates the benefits of scaling-up energy efficiency and renewable energy programs for the building sector in Tunisia. Both energy and non-energy benefits are quantified using a bottom-up analysis approach to assess economic, environmental, and social impacts of a wide range of energy policies targeting new and existing Tunisian building stocks. The investments required to scale-up programs set to improve the energy efficiency performance of existing building stocks are determined in order to assess both their cost-effectiveness and their impact on the overall energy productivity of Tunisia's economy. The energy productivity analysis is performed to account for both energy and non-energy benefits of building-integrated energy efficiency programs. The energy productivity analysis clearly shows that retrofitting existing building stock has several benefits for Tunisia including reduction of the national energy consumption as well as improvement of the country's overall economy energy efficiency. However, only basic retrofit programs are found to be cost-effective for the private sector to implement with discounted payback periods of less than 5 years. Combined with improving the energy efficiency of new and existing buildings, the installation of rooftop photovoltaic systems for households can significantly lower reliance of Tunisia on imported fuels and improve the energy productivity of its overall economy.

scholarly journals Improving the Energy Efficiency of an Existing Building by Dynamic Numerical Simulation

2021 ◽  
Vol 11 (24) ◽  
pp. 12150
Author(s):  
Lelia Letitia Popescu ◽  
Razvan Stefan Popescu ◽  
Tiberiu Catalina
Keyword(s):  
Residential Buildings ◽  
Cost Effective ◽  
Building Energy ◽  
Energy Performance ◽  
Primary Energy ◽  
Building Stock ◽  
Existing Building ◽  
Different Types ◽  
Dynamic Numerical Simulation ◽  
The Relationship

Nowadays, the enhancement of the existing building stock energy performance is a priority. To promote building energy renovation, the European Committee asks Member States to define retrofit strategies, finding cost-effective solutions. This research aims to investigate the relationship between the initial characteristics of an existing residential buildings and different types of retrofit solutions in terms of final/primary energy consumption and CO2 emissions. A multi-objective optimization has been carried out using experimental data in DesignBuilder dynamic simulation tool.

scholarly journals ModSCO a Web Application Based on a Grey-Box Model to Support the Estimation of the Energy Savings in Building Retrofits

2021 ◽  
Vol 11 (1) ◽  
pp. 31
Author(s):  
Alessandro Piccinini ◽  
Federico Seri ◽  
Letizia D’Angelo ◽  
Shima Yousefigarjan ◽  
Marcus M. Keane
Keyword(s):  
Web Application ◽  
Energy Savings ◽  
Cost Effective ◽  
Energy Performance ◽  
Box Model ◽  
The European Union ◽  
Building Stock ◽  
Existing Building ◽  
Performance Contracting ◽  
The Cost

Energy Performance Contracting (EPC) can help the European Union (EU) in accelerating the cost-effective renovation of existing building stock. However, there are many risks and barriers that can inhibit the application of EPC. These barriers include uncertainty about building data, lack of quality assurance regarding the post-renovation energy performance, and process complexity. In order to cross these barriers, this paper presents ModSCO. ModSCO is a web application based on a Reduced Order grey-box Model (ROM) able to systematically quantify the energy savings achieved through Energy Conservation Measures (ECMs) utilising the schema of the International Performance Measurement and Verification Protocol (IPMVP). The benefits of utilising ModSCO in terms of accuracy and time savings are demonstrated with a comparison with a whole building energy model developed with IES-VE.

scholarly journals Bayesian maintenance decision optimisation based on computing the information value from condition inspections

2021 ◽  
pp. 1748006X2097812
Author(s):  
Guang Zou ◽  
Kian Banisoleiman ◽  
Arturo González
Keyword(s):  
Decision Making ◽  
Structural Integrity ◽  
Fatigue Cracking ◽  
Cost Effective ◽  
Offshore Structures ◽  
Information Value ◽  
Bayesian Decision ◽  
Maintenance Strategies ◽  
Optimal Maintenance ◽  
Maintenance Decision

A challenge in marine and offshore engineering is structural integrity management (SIM) of assets such as ships, offshore structures, mooring systems, etc. Due to harsh marine environments, fatigue cracking and corrosion present persistent threats to structural integrity. SIM for such assets is complicated because of a very large number of rewelded plates and joints, for which condition inspections and maintenance are difficult and expensive tasks. Marine SIM needs to take into account uncertainty in material properties, loading characteristics, fatigue models, detection capacities of inspection methods, etc. Optimising inspection and maintenance strategies under uncertainty is therefore vital for effective SIM and cost reductions. This paper proposes a value of information (VoI) computation and Bayesian decision optimisation (BDO) approach to optimal maintenance planning of typical fatigue-prone structural systems under uncertainty. It is shown that the approach can yield optimal maintenance strategies reliably in various maintenance decision making problems or contexts, which are characterized by different cost ratios. It is also shown that there are decision making contexts where inspection information doesn’t add value, and condition based maintenance (CBM) is not cost-effective. The CBM strategy is optimal only in the decision making contexts where VoI > 0. The proposed approach overcomes the limitation of CBM strategy and highlights the importance of VoI computation (to confirm VoI > 0) before adopting inspections and CBM.

scholarly journals Proposal for a Methodology for Sustainable Rehabilitation Strategies of the Existing Building Stock—The Ponte Gêa Neighborhood

Designs ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 26
Author(s):  
Michael M. Santos ◽  
João C. G. Lanzinha ◽  
Ana Vaz Ferreira
Keyword(s):  
Urban Space ◽  
Construction And Demolition Waste ◽  
Expected Improvement ◽  
Water Efficiency ◽  
Building Stock ◽  
Demolition Waste ◽  
Existing Building ◽  
Agenda 2030 ◽  
Development Agenda ◽  
The City

Having in mind the objectives of the United Nations Development Agenda 2030, which refers to the sustainable principles of a circular economy, it is urgent to improve the performance of the built environment. The existing buildings must be preserved and improved in order to reduce their environmental impact, in line with the need to revert climate change and reduce the occurrence of natural disasters. This work had as its main goal to identify and define a methodology for promoting the rehabilitation of buildings in the Ponte Gêa neighborhood, in the city of Beira, Mozambique, with an emphasis on energy efficiency, water efficiency, and construction and demolition waste management. The proposed methodology aims to create a decision support method for creating strategic measures to be implemented by considering the three specific domains—energy, water, and waste. This model allows for analyzing the expected improvement according to the action to be performed, exploring both individual and community solutions. It encompasses systems of standard supply that can reveal greater efficiency and profitability. Thus, the in-depth knowledge of the characteristics of urban space and buildings allows for establishing guidelines for the renovation process of the neighborhood.

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