Simulation for a Cost-Effective and Energy Efficient Retrofits of the Existing Building Stock in India using BIM

2020 ◽  
Author(s):  
Syed Mohd Mehndi ◽  
Indrani Chakraborty
Keyword(s):  
Energy Efficient ◽  
Cost Effective ◽  
Building Stock ◽  
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 Energy Efficient Improvements of Existing Buildings through Building Envelope Upgrade Case Study of High Rise Block of Flats on 76, Boulevard Partizanski Odredi in Karpos IV, Skopje

2016 ◽  
Vol 2016 ◽  
pp. 1-180
Author(s):  
Katerina Petrushevska
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Performance ◽  
Building Envelope ◽  
Living Room ◽  
Building Stock ◽  
Existing Building ◽  
High Rise ◽  
Class B

AIM: This research examines the important issue of energy efficient improvements to the existing building stock through building envelope upgrade. To facilitate this, the energy performance characteristics of the existing building stock were identified with a view to establishing an existing building stock type, where building envelope upgrades can contribute to a higher level of energy efficiency improvements. The literature review along with the selected building precedents was used to establish the best current practice for building envelope upgrades.MATERIAL AND METHODS: Established building precedents and identified best practice for building envelope upgrade, a high rise block of flats was identified and used as a case study, with the current and predicted, following building envelope upgrade, energy performance of the building calculated. This has allowed us to identify the possible energy efficiency improvements for this type of building following the building envelope upgrade. RESULTS: In the projected case, the building with energy class - "D" become class "B". In addition, increased quality of the living room in the attic was enabled. It was possible to obtain a decrease of the heating energy from 130.76 kWh/m²a to 37.73 kWh/m²a or to jump in the class "B" of energetic passport.CONCLUSION: This research contributes to the local implementation of the global agenda for sustainable development, design and construction, and it demonstrates the possible way and level of energy efficiency improvements to the least efficient building stock through existing building envelope upgrade.

Lifecycle profit analysis of prefabricated multi-active façades

2019 ◽  
Vol 37 (5) ◽  
pp. 565-578
Author(s):  
Rikard Sundling ◽  
Stefan Olander ◽  
Petter Wallentén ◽  
Stephen Burke ◽  
Ricardo Bernardo ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Existing Buildings ◽  
Building Stock ◽  
Content Type ◽  
Existing Building ◽  
High Rise ◽  
Profit Analysis ◽  
Two Factors ◽  
Research Findings ◽  
Multifamily Buildings

Purpose The purpose of this paper is to identify appropriate concepts of multi-active façades for the renovation of multifamily buildings in Sweden and to determine which, if any, are financially viable. Design/methodology/approach A lifecycle profit (LCP) analysis was used to examine financial viability through a ten-step process, which included identifying concepts, assessing costs and prices, calculating the LCP and performing sensitivity analysis. Two existing buildings – one low rise and the other high rise – were used as reference models. Findings The findings were contradictory. Implementing any of the multi-active façade concepts on the high-rise building would be financially beneficial. The opposite was, however, the case for the low-rise building. Two factors causing this contradiction have been identified: the façade material before renovation and the size of the building. Research limitations/implications The study is limited to two case buildings situated in Sweden; however, similar buildings represent a significant amount of the existing building stock. Part of the purpose of the study is also to investigate the merits of LCP analysis to evaluate energy-efficient retrofitting. The study implicates the benefits and pitfalls of LCP analysis needed to be considered by researchers and practitioners alike. Originality/value The research findings contribute to the understanding of energy-efficient retrofitting of existing multifamily buildings based on prefabricated multi-active façade concepts.

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 Integration of Prioritisation Criteria in the Design of Energy Efficient Retrofitting Projects at District Scale: A Case Study

2019 ◽  
Vol 11 (14) ◽  
pp. 3861 ◽  
Author(s):  
Miguel Á. García-Fuentes ◽  
Sonia Álvarez ◽  
Víctor Serna ◽  
Maxime Pousse ◽  
Alberto Meiss
Keyword(s):  
Value Chain ◽  
Energy Efficient ◽  
Energy Savings ◽  
Design Parameters ◽  
Decision Making Process ◽  
Building Stock ◽  
Existing Building ◽  
Lack Of Information ◽  
Selection Of

The evident need for improving the existing building stock still suffers from important barriers, such as the fragmentation of the value chain, the lack of information regarding some solutions, and the lack of confidence with respect to energy savings, which prevent unlocking investments, and the difficult communication among stakeholders. Therefore, new processes based on exploiting the potential of existing and new tools are required. In this framework, the OptEEmAL project has developed a tool that integrates stakeholders, data and tools in order to ease the process of designing energy efficient retrofitting projects at building and district scale. This tool works around an optimisation framework in order to evaluate, compare and optimise candidate retrofitting scenarios against a set of indicators showing the performance of the district. This evaluation and optimisation method is based on aggregating indicators through transforming the priorities of stakeholders into a mathematical weighting scheme, which makes it possible to provide scenarios within their expectations. Therefore, the generation of these scenarios is driven by their design parameters, being thus flexible and adapted to their needs. This paper shows the implementation of this tool and specifically 3 different prioritisation schemes, analysing how they impact into the decision making process and selection of the retrofitting strategy.

Reawakening the World's Most Famous Office Building: Economics behind a Groundbreaking Energy Efficiency Retrofit

2017 ◽  
pp. 1-13
Author(s):  
Denise Akason ◽  
Helee Hillman
Keyword(s):  
New York ◽  
Energy Efficient ◽  
Mitigation Strategies ◽  
Office Building ◽  
Building Stock ◽  
Existing Building ◽  
The Real Estate ◽  
Energy Retrofit ◽  
Empire State Building ◽  
Complex Projects

This case highlights a recent and important type of new sustainability project for existing buildings commonly referred to as an integrated energy retrofit (IER) project. Anthony Malkin of Malkin Holdings, owner of the Empire State Building (ESB), acknowledged the importance of making the existing building stock, particularly in New York City, more energy efficient, as it comprises a large part of the real estate in most cities. Taking a bold leadership position, Malkin vowed to make the ESB the most energy-efficient, sustainable, “green” pre-war office building through an IER project that examined several facets of the building's systems, operations, and tenant behaviors. In addition to making the ESB a green icon in Manhattan, Malkin also stated the importance of making the project transparent and economical so other pre-war buildings could copy the model. This case study examines in depth the process that Malkin Holdings underwent in attaining its goal of establishing the ESB as a leader in existing building sustainability.After discussing and analyzing the case, students should be able to: Understand how to balance costs and benefits associated with an IER project Explain the benefits of green retrofitting to owners and tenants Identify risks in high-profile, complex projects and recommend mitigation strategies

Sign in / Sign up

Export Citation Format

Share Document