Assessment of energy performance using bottom-up method

2019 ◽  
Vol 38 (1) ◽  
pp. 192-216
Author(s):  
Khadidja El-Bahdja Djebbar ◽  
Souria Salem ◽  
Abderrahmane Mokhtari
Keyword(s):  
Urban Areas ◽  
Housing Stock ◽  
Residential Buildings ◽  
Energy Performance ◽  
Bottom Up ◽  
Content Type ◽  
Consumption Index ◽  
Physical Information ◽  
Thermal Simulations ◽  
Existing Housing

Purpose The purpose of this paper is to analyze energy performance of the multi-storey buildings built in the city of Tlemcen between 1872 and 2016. Design/methodology/approach A diagnosis based on a bottom-up methodology, using statistical techniques and engineering, has been developed and applied. To do this, demand condition analysis was conducted using a data collection survey on a sample of 100 case studies. Physical characteristics of the buildings have been determined through the archetype by period. This serves to define the strengths and weaknesses of buildings as energy consumers. Findings The obtained results showed that dwellings built between 1872 and 1920 offer better energy performance with a consumption index close to 130kWh/m2/year and this compared to the five periods considered. For dwellings built between 1974 and 1989, energy consumption is higher with an index approaching 300kWh/m2/year, thus qualifying the buildings of this period as energy intensive. Originality/value A database is established to collect physical information on the existing housing stock and thus allow their classification vis-à-vis of the energy label. This study is part of a research project aimed at evaluating and determining optimal measures for energy rehabilitation of multi-family buildings in Tlemcen. Thermal rehabilitation solutions are proposed using thermal simulations, in the following studies, to improve thermal performance of existing buildings. This study constitutes the first step of a roadmap applicable to other cities constituting climatic zones in Algeria. This helps to enrich the Algerian thermal regulation in thermal rehabilitation of existing residential buildings and conception of new ones, in urban areas with a similar climate.

A method for energy efficiency assessment during urban energy planning

2014 ◽  
Vol 3 (2) ◽  
pp. 132-152 ◽  
Author(s):  
Karin Regina de Casas Castro Marins
Keyword(s):  
Energy Efficiency ◽  
Urban Areas ◽  
Energy Use ◽  
Energy Performance ◽  
Urban Morphology ◽  
Pollutant Emissions ◽  
Energy Planning ◽  
Bottom Up ◽  
Content Type ◽  
Urban Energy

Purpose – Energy use in urban areas has turned a subject of local and worldwide interest over the last few years, especially emphasized by the correlated greenhouse gases emissions. The purpose of this paper is to analyse the overall energy efficiency potential and emissions resulting from integrated solutions in urban energy planning, in the scale of districts and neighbourhoods in Brazil. Design/methodology/approach – The approach is based on the description and the application of a method to analyse energy performance of urban areas and support their planning. It is a quantitative bottom-up method and involves urban morphology, urban mobility, buildings and energy supply systems. Procedures are applied to the case study of Agua Branca urban development area, located in Sao Paulo, Brazil. Findings – In the case of Agua Branca area, energy efficiency measures in buildings have shown to be very important mostly for the buildings economies themselves. For the area as a whole, strategies in promoting public transport are more effective in terms of energy efficiency and also to decrease pollutant emissions. Originality/value – Literature review has shown there is a lack of approaches and procedures able to support urban energy planning at a community scale. The bottom-up method presented in this paper integrates a plenty of disaggregated and multisectoral parameters at the same stage in urban planning and shows that is possible to identify the most promising actions by building overall performance indexes.

scholarly journals Assessing building performance in residential buildings using BIM and sensor data

2019 ◽  
Vol 38 (1) ◽  
pp. 176-191 ◽  
Author(s):  
Kay Rogage ◽  
Adrian Clear ◽  
Zaid Alwan ◽  
Tom Lawrence ◽  
Graham Kelly
Keyword(s):  
Energy Use ◽  
Housing Stock ◽  
Residential Buildings ◽  
Performance Data ◽  
Sensor Data ◽  
Building Performance ◽  
Content Type ◽  
Building Maintenance ◽  
Building Management ◽  
Building Information

Purpose Buildings and their use is a complex process from design to occupation. Buildings produce huge volumes of data such as building information modelling (BIM), sensor (e.g. from building management systems), occupant and building maintenance data. These data can be spread across multiple disconnected systems in numerous formats, making their combined analysis difficult. The purpose of this paper is to bring these sources of data together, to provide a more complete account of a building and, consequently, a more comprehensive basis for understanding and managing its performance. Design/methodology/approach Building data from a sample of newly constructed housing units were analysed, several properties were identified for the study and sensors deployed. A sensor agnostic platform for visualising real-time building performance data was developed. Findings Data sources from both sensor data and qualitative questionnaire were analysed and a matrix of elements affecting building performance in areas such as energy use, comfort use, integration with technology was presented. In addition, a prototype sensor visualisation platform was designed to connect in-use performance data to BIM. Originality/value This work presents initial findings from a post occupancy evaluation utilising sensor data. The work attempts to address the issues of BIM in-use scenarios for housing sector. A prototype was developed which can be fully developed and replicated to wider housing projects. The findings can better address how indoor thermal comfort parameters can be used to improve housing stock and even address elements such as machine learning for better buildings.

Measuring energy heating performance of apartment buildings in Kosovo built after 2003

Facilities ◽  
2019 ◽  
Vol 38 (5/6) ◽  
pp. 395-420
Author(s):  
Visar Hoxha
Keyword(s):  
Residential Buildings ◽  
Energy Performance ◽  
European Countries ◽  
Apartment Building ◽  
Member States ◽  
Content Type ◽  
Construction Period ◽  
Heating Performance ◽  
Apartment Buildings ◽  
New Construction

Purpose The purpose of this study is to quantify the energy heating performance of apartment buildings in Kosovo built after 2003 and compare it against the energy heating performance of buildings in member states of EU and selected European countries. Design/methodology/approach This paper takes a case study approach focussed on the assessment of the heating energy performance of the building. This approach facilitated a detailed calculation of the selected materials’ energy performance used in a representative building structure in Kosovo comparing with passive buildings standard and energy heating performance of buildings in member states of EU and selected European countries. Findings Results of quantitative research find that the energy heating performance of apartment buildings in Kosovo built after 2003 is far higher than that of passive buildings standard and is better than the average annual energy heating performance of apartment buildings in member states of the EU and selected European countries. Research limitations/implications The research provides new knowledge regarding energy heating performance in new residential buildings in Kosovo and compares the findings with earlier research and energy consumption in other selected European countries. The research provides great benefits for researchers and practitioners working in the field of energy management as it compares the energy performance of residential buildings across Europe. Originality/value This paper provides a perspective on investigating the energy performance of a building structure of a residential apartment building in Prishtina, Kosovo. By unveiling the level of energy consumption of a residential apartment building in Kosovo representative of the new construction period can help the facility managers to acknowledge the standards they must achieve to refurbish the old building stock to achieve at least the same standard as the buildings in the new construction period.

scholarly journals The Impact of Multi-Level Governance on Energy Performance in the Current Dutch Housing Stock

2008 ◽  
Vol 19 (6) ◽  
pp. 819-830 ◽  
Author(s):  
Thomas Hoppe ◽  
Kris Lulofs
Keyword(s):  
The Netherlands ◽  
Institutional Environment ◽  
Housing Stock ◽  
Energy Performance ◽  
Policy Goals ◽  
Dutch Housing ◽  
Multi Level ◽  
Implementation Problems ◽  
The Impact ◽  
Existing Housing

The housing sector is responsible for 33% of total CO2 emissions in the Netherlands. As such, large reductions in CO2 emissions can be gained by increasing the energy performance in the existing housing stock. Yet, several barriers make this difficult. Renovation investments and maintenance costs are high while badly needed norms for energy improvement are absent. Furthermore, market developments and sectoral policies reflect a complex institutional environment in which many actors are interdependent, but also lack an individual sense of urgency regarding energy consumption. In this article, we try to determine how multi-level governance in Dutch housing affects the outcomes of policies aimed at CO2-reduction in the existing housing stock. We examined two housing sectors in the Netherlands: social housing and owner occupancy. We focus on policy implementation problems in the early 2000s. It turns out that the complex multilevel environment severely impedes the realization of ambitious policy goals.

scholarly journals Rating existing housing stock for energy performance - development of an Australian national scheme

2016 ◽  
Author(s):  
Timothy O’Leary ◽  
◽  
Martin Belusko ◽  
Frank Bruno ◽  
◽  
...  
Keyword(s):  
Housing Stock ◽  
Energy Performance ◽  
Performance Development ◽  
Existing Housing

scholarly journals The effect of current thermomodernization projects on energy performance of multi-family residential buildings and perspectives for new regeneration projects: the case of a housing estate in Lublin

2010 ◽  
Vol 7 (2) ◽  
pp. 089-103
Author(s):  
Anna Ostańska
Keyword(s):  
Energy Saving ◽  
Housing Stock ◽  
Residential Buildings ◽  
Precast Concrete ◽  
Holistic Approach ◽  
Energy Performance ◽  
Technical Condition ◽  
Housing Estate ◽  
Pilot Studies ◽  
Concrete Plate

Managers of large housing estates whose stocks consist mainly of precast concrete plate buildings of 1970ies, due to their sheer size and technical condition far from being perfect, are especially concerned with searching for solutions that would reduce energy consumption. Thermal modernization projects provide an opportunity to adopt a holistic approach to the problem of obsolescence of this relatively new housing stock and to consider it in terms of urban regeneration. The paper describes the energy saving policies in Poland and results of pilot studies of Building Research Institute (ITB) aimed at defining optimal scope of thermomodernization of precast concrete plate housing. The paper investigates into the effects of thermomodernization of a particular, though typical, housing estate in Lublin in order to give grounds for future actions in the field of energy saving measures.

Flooding in mega-cities: using structural equation modeling to assess flood impact in Dhaka

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Md. Nawrose Fatemi ◽  
Seth Asare Okyere ◽  
Stephen Kofi Diko ◽  
Matthew Abunyewah ◽  
Michihiro Kita ◽  
...  
Keyword(s):  
Social Capital ◽  
Urban Areas ◽  
Structural Equation ◽  
Residential Buildings ◽  
Equation Modeling ◽  
Socioeconomic Conditions ◽  
Content Type ◽  
Management Interventions ◽  
Entry Points ◽  
Flood Impact

Purpose This paper aims to bring the more recent discourse on the multilayered and interconnected dimensions of flood vulnerability, damage and risk reduction at the microlevel of global south cities to Dhaka, by looking at multiple factors and their relationships. Design/methodology/approach A cross-sectional research design was used to generate data from 315 respondents in five neighborhoods in Eastern Dhaka, located in high flood damage zones with previous flood experience, using a structural equation model to test nine hypothetical relationships. Findings The model confirms that low socioeconomic conditions often lead households to use social capital to traverse flood vulnerabilities in cities. It also advances this notion to show that flood impact unleashes social capital through collective activities in responding to flooding. Further, it reveals that while socioeconomic conditions influence flood impacts, these also engender the necessary mechanisms to unleash collective responses to flooding. Practical implications This paper suggests the need for context-specific interventions that transcend physical and infrastructural responses to integrate socioeconomic conditions as a basis of understanding and addressing flood vulnerabilities. To achieve this requires transcending generic participatory mechanisms to use frameworks that encourage genuine participation and partnerships using coproduction. Originality/value This paper engages both the inner city and peri-urban areas of Dhaka to extend current conversations on the various conditions underlying flood impact to offer entry points for integrated flood management interventions at the microlevel. This paper contributes to fill the research gap in Dhaka where very few studies have examined flood damages to residential buildings and its driving factors at the neighborhood level.

scholarly journals Building stock simulation to support the development of a district multi-energy grid

2019 ◽  
Vol 111 ◽  
pp. 06027
Author(s):  
Francesco Causone ◽  
Martina Pelle
Keyword(s):  
Urban Areas ◽  
Cooling System ◽  
Residential Buildings ◽  
Energy Performance ◽  
Heat Pumps ◽  
Monitoring Data ◽  
Building Stock ◽  
District Heating System ◽  
Existing Building ◽  
Energy Grid

The urbanization process is constantly increasing worldwide. Today over 50 % of the population resides in urban areas and this value is expected to grow up to 68 % by 2050. In this scenario, the development of district scale energy grids and management systems has become crucial to optimize energy use and to balance energy flows within the cities, encouraging the use of renewable sources and self-consumption. This study focusses on a district under development in the city of Milan, involving an urban area of about 920 000 m2, which, once completed, will count for about 4 500 apartments, a school and a few other commercial uses. The existing energy systems consist of an electric grid, including a small photovoltaic field, a district heating system and a local district cooling system exploiting groundwater via heat pumps. They serve, at present, seven residential tower buildings (400 apartments). The overarching aim of the research is to evolve the existing grid into a smart energy grid able to guarantee an intelligent management of the district, empowering eventually people to apply for demand-response schemes, electric mobility and other innovative services. In order to perform such an improvement and extension of the exiting grid, it is necessary to evaluate and simulate the profiles and dynamics of the final energy uses for the residential buildings, that will represent the major load on site. Since monitoring data are not yet available for the district, the evaluation of the energy performance of the existing buildings has been developed through dynamic energy simulations via the definition of profile loads of the most frequent apartment typologies, that allow, moreover, to simulate further developments in the districts. Besides, a monitoring plan for the existing systems has been developed and implemented. Monitoring data will be used at first for validating the developed load profiles; then, they will be analysed to develop optimisation algorithms for the management of the upgraded energy grid. In this paper, the case study is presented and the results of the analysis, via energy simulation, on the existing building stock are reported.

scholarly journals Improving energy efficiency in Vietnamese tube houses

2019 ◽  
Vol 8 (5) ◽  
pp. 366-390 ◽  
Author(s):  
Phan Anh Nguyen ◽  
Regina Bokel ◽  
Andy van den Dobbelsteen
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Indoor Environment ◽  
Energy Use ◽  
Housing Stock ◽  
Building Design ◽  
Energy Performance ◽  
Building Envelope ◽  
Content Type ◽  
Actual Energy Consumption

Purpose Refurbishing houses is considered a key measure to improve the energy efficiency of the built environment. However, little is known about the implementation and outcome of housing renovation for energy upgrades in the Vietnamese practice. The purpose of this paper is to investigate the energy performance of the current housing stock in Vietnam and the potential to reduce energy use in households. Design/methodology/approach The paper is based on a survey with 153 respondents in three major climatic regions of Vietnam. The survey focusses on building characteristics, environmental performance, energy performance and refurbishment activities. Data collected from the survey were statistically analysed to give insight into the current performance of the housing stock and its energy saving potential. Findings This paper concludes that building design and construction, particularly the building envelope, have a significant influence on the occupants’ comfort. However, the energy consumption in houses is not statistically associated with building design and indoor environment. It is suggested that financial status and occupants’ behaviour currently have a strong influence on the household energy use. The survey also showed that refurbishment improves the housing performance, especially if improving the indoor environment was one of the drivers. Originality/value There are very few studies on energy use in households in Vietnam, especially with regards to actual energy consumption. This paper brings insights into the actual energy consumption and reveals the “performance gap” in Vietnamese housing stock.

Sign in / Sign up

Export Citation Format

Share Document