scholarly journals The Analysis on Energy Performance Index of the Green Building Certified Apartment Buildings in Korea

2013 ◽  
Vol 4 (4) ◽  
pp. 407-415
Author(s):  
Jong-Yeob Kim ◽  
Yoon-Hye Jung ◽  
Hae-Sun Paik
Keyword(s):  
Performance Index ◽  
Green Building ◽  
Energy Performance ◽  
Apartment Buildings

scholarly journals Energy Rating of Buildings to Promote Energy-Conscious Design in Israel

Buildings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 59
Author(s):  
Abraham Yezioro ◽  
Isaac Guedi Capeluto
Keyword(s):  
Design Process ◽  
Architectural Design ◽  
Residential Building ◽  
Green Building ◽  
Energy Performance ◽  
Basic Unit ◽  
Design Stage ◽  
Design Decision ◽  
Rating Systems ◽  
New Buildings

Improving the energy efficiency of existing and new buildings is an important step towards achieving more sustainable environments. There are various methods for grading buildings that are required according to regulations in different places for green building certification. However, in new buildings, these rating systems are usually implemented at late design stages due to their complexity and lack of integration in the architectural design process, thus limiting the available options for improving their performance. In this paper, the model ENERGYui used for design and rating buildings in Israel is presented. One of its main advantages is that it can be used at any design stage, including the early ones. It requires information that is available at each stage only, as the additional necessary information is supplemented by the model. In this way, architects can design buildings in a way where they are aware of each design decision and its impact on their energy performance, while testing different design directions. ENERGYui rates the energy performance of each basic unit, as well as the entire building. The use of the model is demonstrated in two different scenarios: an office building in which basic architectural features such as form and orientation are tested from the very beginning, and a residential building in which the intervention focuses on its envelope, highlighting the possibilities of improving their design during the whole design process.

scholarly journals Energy Performance of a High-Rise Residential Building Using Fibre-Reinforced Structural Lightweight Aggregate Concrete

2020 ◽  
Vol 10 (13) ◽  
pp. 4489
Author(s):  
Zakaria Che Muda ◽  
Payam Shafigh ◽  
Norhayati Binti Mahyuddin ◽  
Samad M.E. Sepasgozar ◽  
Salmia Beddu ◽  
...  
Keyword(s):  
Residential Building ◽  
Green Building ◽  
Lightweight Aggregate ◽  
Energy Performance ◽  
Building Envelope ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
High Rise ◽  
Passive Design ◽  
Envelope Material

The increasing need for eco-friendly green building and creative passive design technology in response to climatic change and global warming issues will continue. However, the need to preserve and sustain the natural environment is also crucial. A building envelope plays a pivotal role in areas where the greatest heat and energy loss often occur. Investment for the passive design aspect of building envelopes is essential to address CO 2 emission. This research aims to explore the suitability of using integral-monolithic structural insulation fibre-reinforced lightweight aggregate concrete (LWAC) without additional insulation as a building envelope material in a high-rise residential building in the different climatic zones of the world. Polypropylene and steel fibres in different dosages were used in a structural grade expanded clay lightweight aggregate concrete. Physical and thermal properties of fibre reinforced structural LWAC, normal weight concrete (NWC) and bricks were measured in the lab. The Autodesk@Revit-GBS simulation program was implemented to simulate the energy consumption of a 29-storey residential building with shear wall structural system using the proposed fibre-reinforced LWAC materials. Results showed that energy savings between 3.2% and 14.8% were incurred in buildings using the fibre-reinforced LWAC across various climatic regions as compared with traditional NWC and sand-cement brick and clay brick walls. In conclusion, fibre-reinforced LWAC in hot-humid tropical and temperate Mediterranean climates meet the certified Green Building Index (GBI) requirements of less than 150 kW∙h∙m−2. However, in extreme climatic conditions of sub-arctic and hot semi-arid desert climates, a thicker wall or additional insulation is required to meet the certified green building requirements. Hence, the energy-saving measure is influenced largely by the use of fibre-reinforced LWAC as a building envelope material rather than because of building orientation.

Apartment related energy performance gap – How to address internal heat transfers in multi-apartment buildings

2020 ◽  
Vol 215 ◽  
pp. 109887 ◽  
Author(s):  
Simon Moeller ◽  
Ines Weber ◽  
Franz Schröder ◽  
Amelie Bauer ◽  
Hannes Harter
Keyword(s):  
Internal Heat ◽  
Energy Performance ◽  
Performance Gap ◽  
Apartment Buildings ◽  
Related Energy ◽  
Heat Transfers

scholarly journals Optimal distributed generation in green building assessment towards line loss reduction for Malaysian public hospital

2019 ◽  
Vol 8 (4) ◽  
Author(s):  
Mohd Effendi Amran ◽  
Mohd Nabil Muhtazaruddin ◽  
Nurul Aini Bani ◽  
Hazilah Mad Kaidi ◽  
Mohamad Zaki Hassan ◽  
...  
Keyword(s):  
Distributed Generation ◽  
Public Hospital ◽  
Green Building ◽  
Energy Performance ◽  
Optimization Approach ◽  
Loss Reduction ◽  
Voltage Profile ◽  
Bee Colony ◽  
Line Loss ◽  
Current Setting

This paper presents an optimization approach for criteria setting of Renewable Distributed Generation (DG) in the Green Building Rating System (GBRS). In this study, the total line loss reduction is analyzed and set as the main objective function in the optimization process which then a reassessment of existing criteria setting for renewable energy (RE) is proposed towards lower loss outcome. Solar photovoltaic (PV)-type DG unit (PV-DG) is identified as the type of DG used in this paper. The proposed PV-DG optimization will improve the sustainable energy performance of the green building by total line losses reduction within accepted lower losses region using Artificial bee colony (ABC) algorithm. The distribution network uses bus and line data setup from selected one of each three levels of Malaysian public hospital. MATLAB simulation result shows that the PV-DG expanding capacity towards optimal scale and location provides a better outcome in minimizing total line losses within an appropriate voltage profile as compared to the current setting of PV-DG imposed in selected GBRS. Thus, reassessment of RE parameter setting and the proposed five rankings with new PV-DG setting for public hospital provides technical justification and give the best option to the green building developer for more effective RE integration.

ENERGY PERFORMANCE OF CAMPUS LEED® BUILDINGS: IMPLICATIONS FOR GREEN BUILDING AND ENERGY POLICY

2015 ◽  
Vol 10 (3) ◽  
pp. 137-160 ◽  
Author(s):  
Qian Chen ◽  
Lauren Kleinman ◽  
Aparna Dial
Keyword(s):  
Green Building ◽  
Building Energy ◽  
The United States ◽  
Energy Performance ◽  
Contributing Factors ◽  
Policy And Practice ◽  
University Campuses ◽  
Leed Certification ◽  
Leed Buildings ◽  
High Level

Many university campuses in the United States are working toward their sustainable goals by adopting energy or green building policies, which require Leadership in Energy and Environmental Design (LEED®) certification for new construction and major renovation projects. Because LEED certification heavily relies on whole building energy simulation to demonstrate building energy performance improvement, it is often assumed that the finished buildings will achieve the predicted level of energy efficiency. This paper presents a study that compares the energy model predictions with actual energy performance of three LEED buildings on a university campus. The study shows that one of the campus LEED buildings consumed twice the predicted energy usage while causing a high level of occupant dissatisfaction. Further investigation reveals a variety of contributing factors for these issues and provides insights to improve green building policy and practice. Not only are the research findings important for this particular campus (Ohio State University) on its way to sustainability, they also have widespread ramifications for other university campuses.

scholarly journals Importance of building services in ecological building assessments

2019 ◽  
Vol 111 ◽  
pp. 03061 ◽  
Author(s):  
Michaela Lambertz ◽  
Sebastian Theißen ◽  
Jannick Höper ◽  
Reinhard Wimmer
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Renewable Energy Sources ◽  
Green Building ◽  
Energy Performance ◽  
Simplified Approach ◽  
Ecological Requirements ◽  
Building Information ◽  
Building Life Cycle

The new Energy Performance of Buildings Directive (EPBD) 2018 and the GebäudeEnergieGesetz (GEG) tightened the requirements for energy efficiency and the use of renewable energy sources in buildings at EU and national levels. Environmental impacts from manufacturing, dismantling and recycling of buildings are not taken into account. Green Building Certification Systems, such as the DGNB or BNB systems, are therefore the only ones that (voluntarily) set holistic, ecological requirements for buildings. Based on a Whole-Building Life Cycle Assessment, the entire building life cycle and its environmental effects are evaluated. While building services in this context are usually only included in such a simplified approach, the full scope of the produced environmental impacts are underestimated and misjudged for the reduction of emissions and other environmental impacts. This publication uses the results of a life cycle assessment of a typical office building (in Germany) to show the amount of influence building services have on environmental impacts of buildings. Furthermore the study shows an approach how the very high pro-curement and calculation effort of LCA can be reduced by linking the Building Information Modelling (BIM) Method and LCA models to enable a significantly more efficient and easier calculation process, es-pecially for building services.

scholarly journals Establishment of Key Performance Indicators for Green Building Operations Monitoring—An Application to China Case Study

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 976 ◽  
Author(s):  
Jinqiu Li ◽  
Qingqin Wang ◽  
Hao Zhou
Keyword(s):  
Environmental Quality ◽  
Performance Indicators ◽  
Green Building ◽  
Key Performance Indicators ◽  
Energy System ◽  
Energy Performance ◽  
Operational Performance ◽  
Indoor Environmental Quality ◽  
Evaluation Standards

Released green building evaluation standards for operation stage include a huge number of indicators, which are very comprehensive and systematic. However, the indicators of these standards are very complicated and a large amount of time and manpower are consumed for their evaluation. To evaluate the operational performance of green buildings more practically and efficiently, some studies collect the operational data for part of the indicators (mainly focusing on building energy performance, indoor environmental quality or occupant satisfaction), which are too rough to evaluate the performance of green building. This paper proposed a total of 27 key performance indicators (KPIs) for green building operations monitoring. The number of proposed indicators is much fewer than the evaluation standards, as well as suitable for long-term monitoring, which can dramatically reduce evaluation time and cost. On the other hand, the indicators involving Outdoor environmental quality, Indoor environmental quality, HVAC system, P&D system, Renewable energy system, Total resource consumption and User behavior, which are more comprehensive and systematic than the conventional monitoring studies for operational performance of green building. Firstly, an indicators library for operations monitoring of green building was established based on relevant standards and literature review in this field. Secondly, “SMART” principle and Delphi method were adopted to select the key performance indicators for green building operations monitoring. Different background experts regarding green building industry were chosen to screen the most relevant, accessible and measurable indicators. Subsequently, two projects in China were selected for case study of key performance indicators proposed in this paper for green building operations monitoring to validate the feasibility and advancement.

scholarly journals Optimization of emission reducing energy retrofits in Finnish apartment buildings

2019 ◽  
Vol 111 ◽  
pp. 03002 ◽  
Author(s):  
Janne Hirvonen ◽  
Juha Jokisalo ◽  
Juhani Heljo ◽  
Risto Kosonen
Keyword(s):  
Heat Pump ◽  
Life Cycle Cost ◽  
District Heating ◽  
Cost Savings ◽  
Cost Effective ◽  
Energy Performance ◽  
Heat Pumps ◽  
Apartment Buildings ◽  
Ground Source ◽  
Reduce Emissions

This study examined the cost-optimality of energy renovation on Finnish apartment buildings of different ages, built according to different energy performance requirements. Multi-objective optimization was utilized to minimize both CO2 emissions and life cycle cost (LCC). IDA-ICE simulations were performed to obtain the hourly heating demand of the buildings. Four building age classes and three heating systems (district heating, exhaust air heat pump and ground-source heat pump) were separately optimized. With district heating, it was possible to reduce emissions by 11%, while also reducing LCC. With heat pumps cost-savings could be achieved while reducing emissions by over 49%. With maximal (not cost-effective) investments, emissions could be reduced by more than 70% in all examined cases. In all cases, the cheapest solutions included solar electricity and sewage heat recovery. In old buildings, window upgrades and additional roof insulation were cost-effective. In new buildings, demand-based ventilation was included in all optimal solutions.

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