scholarly journals Investigation of sustainability embodied in existing buildings: a case study of refurbishment adopted in a Chinese contemporary building

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yi Huang ◽  
Chong Xu ◽  
Yufan Xiao ◽  
Bart Dewancker
Keyword(s):  
Energy Efficiency ◽  
Simulation Method ◽  
Energy Performance ◽  
Field Investigation ◽  
Simulation Software ◽  
Building Performance ◽  
Existing Buildings ◽  
Building Performance Simulation ◽  
Energy Behavior

AbstractThe Liyuan courtyard buildings are considered as contemporary architectural symbols of the spirit in Qingdao, China. The sustainability potentials embodied in the building is evaluated by building performance simulations analysis based on field investigation in this case study. Two models with optimization refurbishment were made through building simulation software. One model with façade supplemented in the insulation layers of the envelope walls and the other model with further upgrade with consideration of recycling materials mixed were discussed and estimated with building performance simulation method. The energy performance in the building and both scenarios designed can improve the energy efficiency, while the advanced model could achieve better result in the building energy behavior dramatically. Technologies innovation are proved to be good tools to improve energy performance the existing buildings by renovation actions such as insulation improvement and so on. It is concluded the sustainability regain its authentic appearance while achieve energy efficiency embodied within contemporary buildings through adaptational renovation strategies. Multicriteria considerations might influence the balanced between different factors when making decisions in the building restoration project, it is also expected to empower the fresh glory in the development of building protection and restoration.

scholarly journals Assessments on Sustainability Potential by Upgrade of Existing Heritage Buildings: a case study of Liyuan Courtyard in Qingdao, China

2020 ◽  
Author(s):  
Yi Huang ◽  
Yufan Xiao ◽  
Fan Yu
Keyword(s):  
Energy Efficiency ◽  
Energy Performance ◽  
Building Performance ◽  
Performance Simulation ◽  
Building Performance Simulation ◽  
Positive Effects ◽  
Energy Behavior ◽  
Heritage Buildings ◽  
Heritage Building

Abstract Background: The existing heritage buildings are considered as symbols of the original spirit of a city, which also contains vitality and resilience through centuries. In Qingdao, the Liyuan courtyard styles are still existed as a very regional and representative colonial residential architecture form in the urban development history from 1900s in this city. Method: The research here made the hypotheses of the heritage buildings can regain its authentic appearance while achieve energy efficiency in building performance through optimization and renovation strategies. The sustainability potentials assessment is discussed and evaluated with field investigation in a Liyuan building case study by on-site observation and building performance simulation analysis of two renovation options.Result and Discussion: One model with façade supplemented in the insulation layers in the envelope walls and another model with further upgrade with consideration of recycling materials mixed were discussed and estimated with building performance simulation method. Both scenarios improved the energy efficiency, while the advanced model could achieve better result in the building energy behavior dramatically.Conclusion: This research paper verified the hypotheses of sustainability embodied in Liyuan buildings. It also confirmed the vitality and resilience could be regained through history with considerable and reasonable guideline in strategy together with personal alternatives. Technologies innovation helps to improve their energy performance by reducing consumption or self-supplying on the existing buildings renovation actions. Every specific choices of renovation action could achieve low energy goals and impose optional positive effects on the behavior of the living comfort preference. Multicriteria considerations might influence the balanced between different factors when making decisions in the heritage building restoration and it is expected to empower the fresh glory in the development of heritage building protection and restoration.

scholarly journals Re-use of historic buildings and energy refurbishment analysis via building performance simulation: A case study

2018 ◽  
Vol 22 (6 Part A) ◽  
pp. 2335-2354 ◽  
Author(s):  
Nenad Sekularac ◽  
Dragoslav Sumarac ◽  
Jasna Cikic-Tovarovic ◽  
Milos Cokic ◽  
Jelena Ivanovic-Sekularac
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy Sources ◽  
Simulation Method ◽  
Positive Outcome ◽  
World Heritage Site ◽  
Building Performance ◽  
Historic Buildings ◽  
Performance Simulation ◽  
Building Performance Simulation ◽  
Efficiency Measures

This paper analyses the possibility to apply energy refurbishment measures in restored historic buildings in order to ensure reuse. The objective of the paper is to provide an appropriate methodology for the structural restoration of historic buildings, their re-use and sustainable energy refurbishment in accordance with current needs and conservation principles. The study provides the analysis and evaluation of the realized goals regarding energy refurbishment and energy efficiency. The presented historic buildings belong to Hilandar Monastery, Mount Athos, Greece. Mount Athos has been listed in UNESCO World Heritage Site for decades. The paper deals with the expert analysis of abandoned and devastated structures included in the Haybarn Complex. This paper provides a positive outcome of the performed restoration in terms of energy refurbishment and repurpose, since these buildings were turned into unique accommodation facilities for visitors. This accomplishment can be seen as a useful recommendation for improving energy efficiency of historic buildings during their restoration. All the undertaken methods are in accordance with the environmental protection requirements. This study is a practical observation and analysis of energy refurbishment in the field of restoration of listed buildings. This certainly is the most important contribution of this paper. All energy efficiency measures and renewable energy sources were carried out in compliance with conservation requirements and visual authenticity of historic structures. Assessment and analysis of energy efficient refurbishment via building performance simulation method and energy efficiency optimization was applied to several different models of restoration that was carried out in the Haybarn Complex.

scholarly journals Double or single skin façade in a moderate climate an EnergyPlus assessment

2016 ◽  
Vol 20 (suppl. 5) ◽  
pp. 1501-1510 ◽  
Author(s):  
Aleksandar Andjelkovic ◽  
Jovan Petrovic ◽  
Miroslav Kljajic
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Software Tool ◽  
Climatic Conditions ◽  
Simulation Software ◽  
Building Performance ◽  
Main Question ◽  
Building Performance Simulation ◽  
Double Skin

The research analyses the double skin fa?ades concept and their impact on the energy efficiency of buildings. This kind of fa?ade system has the ability to increase the energy efficiency and flexibility of buildings, while improving the quality of the indoor environment. The best way to develop and evaluate this complex type of building structure is the use of total building performance simulation in combination with experimental data. The overall research plan is based on experimental work, the process of validation and the numerical simulation of the validated model. Thus, the task of this part of the research is a comparative analysis between the current state of a building with double skin fa?ades and models with traditional envelope type. The main question that arises is whether and how the double skin fa?ades may contribute to the decrease in the energy consumption of the building by increasing the quality of the thermal comfort of the occupants. The simulation software tool, EnergyPlus in combination with airflow network algorithm, is used for modelling and all necessary energy calculations. The validated model in the analysis is used for comparative evaluation with models with traditional fa?ades. The simulation results for all the models analysed assess what their impact is on the energy consumption for heating and air-conditioning of the building. Comparing to models with traditional fa?ade, the energy analysis shows justification in the climatic conditions of Belgrade. Additionally, simulations results highlighted the necessity for an adequate control strategy of the double skin fa?ades application.

scholarly journals Building energy performance assessment for existing commercial buildings with heritage values

2019 ◽  
Vol 277 ◽  
pp. 03018
Author(s):  
James Pow Chew Wong
Keyword(s):  
Performance Assessment ◽  
Greenhouse Gas ◽  
Building Energy ◽  
Energy Performance ◽  
Simulation Software ◽  
Commercial Buildings ◽  
Building Performance ◽  
Performance Simulation ◽  
Building Energy Performance ◽  
Building Performance Simulation

The building sector accounts for 19% of Australia's energy consumption and around 23% of the greenhouse gas emissions. In 2005, commercial buildings in Australia were responsible for 10% or 26 megatonnes (Mt) of the nation's greenhouse gas emissions. They are two effective ways to reduce the building sector's emissions, namely constructing new energy efficient buildings or retrofitting existing buildings. Due to the life expectancy of existing building stock the greatest reduction in emissions before 2030 could be achieved through retrofits. Building performance assessment and evaluation uses predictive modelling method to investigate and evaluate building performance in energy demands, thermal occupant comfort, indoor air quality, building retrofit options and many other related environmental and wellbeing aspects. This paper discussed the use of building performance simulation software to investigate the impacts of various retrofit options have onto energy performance of existing commercial buildings with heritage values in Australia. The research explores the use of thermal and airflow modelling in assisting understanding of building energy performance with various retrofit options applied to existing commercial buildings. The finding highlights the capabilities of building performance simulation software in decision making for building performance investigations.

scholarly journals Traffic queue modeling using arena simulation software (a case study of Mergan 4-Way intersection in Malang City)

2018 ◽  
Vol 204 ◽  
pp. 02009 ◽  
Author(s):  
Dani Yuniawan ◽  
P.P Aang Fajar ◽  
Samsudin Hariyanto ◽  
Romi Setiawan
Keyword(s):  
Flow System ◽  
Simulation Method ◽  
Simulation Software ◽  
Verification And Validation ◽  
Scenario Simulation ◽  
Traffic Light ◽  
Simulation Scenario ◽  
Research Outcome ◽  
Arena Simulation

Currently Mergan 4-way intersection is one of intersection that have most traffic dense in Malang City, East Java - Indonesia. This research implement simulation method in order to give several solution option to manage the traffic queue in Mergan 4-way intersection. Simulation method is conducted with several phase, from problem identification up to verification and validation also scenario simulation. Arena Simulation software v.14 is chosen as the tool to modeling the traffic queue line. The research outcome give several solution through Traffic Light 2 simulation scenario. With this simulation scenario, the traffic flow system simulation can be run with fewer queues of vehicles.

scholarly journals ASSESSMENT OF ENERGY PERFORMANCE GAP OF AN OFFICE BUILDING

2021 ◽  
Vol 13 (0) ◽  
pp. 1-6
Author(s):  
Rasa Džiugaitė-Tumėnienė ◽  
Domas Madeikis
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Internal Heat ◽  
Energy Performance ◽  
Energy Model ◽  
Indoor Climate ◽  
Performance Gap ◽  
Protection Measures ◽  
Climate Parameters

The high share of global energy costs to create an indoor climate has been of increasing interest to the global community for several decades and is increasingly the focus of policy. This paper analyses the energy performance gap between actual energy consumption and energy demand obtained during the dynamic energy simulation and building certification. To identify the energy performance gap, an existing office of energy efficiency class B was selected as a case study. The simulation program IDA Indoor Climate and Energy was used to create a dynamic energy model, based on the designed documentation and the actual indoor climate parameters recorded by the building management system. The results of the case study showed that the accuracy and reliability of the results presented by the dynamic energy model of the building directly depend on the assumptions. The correct values of the internal heat gains, indoor climate parameters, human behavior, air quality levels at different times of the day and season, HVAC system operation parameters and operation modes, specific fan powers of ventilation systems, the seasonal energy efficiency of cooling equipment and characteristics of sun protection measures have to be selected.

Energy efficient design optimization of a bioclimatic house

2019 ◽  
Vol 29 (2) ◽  
pp. 270-285 ◽  
Author(s):  
MA Boukli Hacene ◽  
NE Chabane Sari
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Simulation Analysis ◽  
Simulation Software ◽  
Living Environment ◽  
Building Performance ◽  
Efficient Design ◽  
Global Energy ◽  
Existing Building ◽  
Building Performance Simulation

The global energy context of the year 2018 makes us pessimistic about the future. The geopolitical, environmental and socio-economic aspects are linked to the political tensions of countries that hold and manipulate the global energy market. These countries are haunted by the population growth, the depletion of fossil resources and the global economic crisis. Each country is trying to find reasonable solutions to deal with this crisis. Unfortunately, these solutions always have direct negative repercussions on the population and on the environment. In this paper we present a case study developed in Algeria and inspired by the current and critical socio-economic situation of the country, in particular, the application of energy-saving techniques to an existing building. The investigation was conducted by using both simulation software and real interventions. We analyse some of the major components, such as building’s orientation and exposure to daylight which have significant impact on energy consumption. We present the concept of Building Performance Simulation Analysis, using Autodesk ECOTECT Analysis and COMSOL Multiphysics software, and give full consideration to various ecological energy-saving methods. Using our models, we present a possible solution for retrofitting a building to minimize its energy consumption. The results are useful for both building energy conversation and creating a comfortable living environment in future.

scholarly journals Outsourcing energy retrofitting of hotel buildings: the decision-making process

2019 ◽  
Vol 266 ◽  
pp. 01016 ◽  
Author(s):  
M.F.F. Fasna ◽  
Sachie Gunatilake
Keyword(s):  
Decision Making ◽  
Energy Performance ◽  
Decision Making Process ◽  
Existing Buildings ◽  
Energy Retrofit ◽  
Energy Efficiency Improvement ◽  
Adoption And Implementation ◽  
Energy Service ◽  
The Right

Poor energy performance of existing buildings worldwide has led to a crucial need to retrofit existing buildings to minimise energy consumption. Among the existing buildings, hotels use as much as 50% of their total expenses on energy and offer significant opportunities for energy efficiency improvement. Yet, comparatively the level of implementation of energy retrofits found to be low, which has attributed to, inter alia, the absence of a clearly defined process for ensuring the delivery of energy retrofit projects and lack of proactive guidance for project teams to ensure that they make the right decisions at the right time to achieve the desired outcomes. Since many energy retrofit projects in existing hotels are carried out with the involvement of an external contractor, or an Energy Service Company (ESCO), this study focuses on investigating the decision-making process in implementing energy retrofits when the project is outsourced to an external party. An in-depth case study is used to obtain insights into the critical decisions to be taken and key activities to be performed throughout the decision-making process. The findings are used to propose a step-by-step decision-making process comprising of three key phases: i.e., pre-retrofit, retrofit implementation and post-retrofit. It is hoped that the decision-making process developed in this study will serve as a roadmap for the effective adoption and implementation of energy retrofits in existing hotel buildings when an external contractor is involved.

scholarly journals Investigating the impacts of a changing climate on the risk of overheating and energy performance for a UK retirement village adapted to the nZEB standards

2019 ◽  
Vol 40 (4) ◽  
pp. 470-491 ◽  
Author(s):  
Radwa Salem ◽  
Ali Bahadori-Jahromi ◽  
Anastasia Mylona
Keyword(s):  
Energy Efficiency ◽  
Thermal Comfort ◽  
Energy Performance ◽  
High Energy ◽  
Climatic Conditions ◽  
Simulation Software ◽  
Mitigation Strategies ◽  
Zero Energy ◽  
Changing Climate ◽  
Retirement Village

The death toll of the 2003 heat wave in Europe exceeded 35,000 heat-related deaths. The elderly population were the most affected. The current paradigm within the construction industry in cold-dominant countries is to design/retrofit buildings with high levels of insulation. Whilst thermal comfort may be reached during colder months with this approach, the risk of overheating can be increased during hotter months. This paper aims to examine the impacts of a changing climate on the risk of overheating and energy performance for a UK retirement village. For this study, the buildings within the retirement village will be designed to reach the nearly zero energy building standard. Consequently, the risk of overheating of the buildings within the retirement village as they currently stand and as zero energy buildings will be investigated under current and future climatic conditions. The analysis is carried out using thermal analysis simulation software (TAS, Edsl). Combined heat and power and combined cooling, heat and power will be investigated as mitigating strategies with regard to overheating. The results of this study do not undermine the importance of continuing to improve the energy efficiency of existing buildings but rather highlight that the approach undertaken should be reconsidered. Practical application: Currently, there is emphasis placed on retrofitting and designing buildings, with high energy efficiency standards. Whilst this is in line with our vision as a society towards reaching a decarbonised, sustainable future, this work highlights that doing so, carries risks with regard to overheating. Nonetheless, the results demonstrate that with the incorporation of suitable mitigation strategies and adequate ventilation strategies, it is possible to achieve an energy efficient building that meets the heating and cooling demand (and thereby thermal comfort of occupants) during the heating and non-heating season.

The energy efficiency and carbon footprint of temporary homes: a case study from Japan

2017 ◽  
Vol 8 (4) ◽  
pp. 326-343 ◽  
Author(s):  
Matti Kuittinen ◽  
Atsushi Takano
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Carbon Footprint ◽  
Energy Demand ◽  
Tohoku Earthquake ◽  
Energy Performance ◽  
Refugee Camps ◽  
Content Type ◽  
Proper Design

Purpose The purpose of this study is to investigate the energy efficiency and life cycle carbon footprint of temporary homes in Japan after the Great Eastern Tohoku Earthquake in 2011. Design/methodology/approach An energy simulation and life cycle assessment have been done for three alternative shelter models: prefabricated shelters, wooden log shelters and sea container shelters. Findings Shelter materials have a very high share of life cycle emissions because the use period of temporary homes is short. Wooden shelters perform best in the comparison. The clustering of shelters into longer buildings or on top of each other increases their energy efficiency considerably. Sea containers piled on top of each other have superb energy performance compared to other models, and they consume even less energy per household than the national average. However, there are several gaps of knowledge in the environmental assessment of temporary homes and field data from refugee camps should be collected as part of camp management. Originality/value The findings exemplify the impacts of the proper design of temporary homes for mitigating their energy demand and greenhouse gas emissions.

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