Study on the Building Climatic Design Method Based on Computer Simulation and Analysis Technology

2013 ◽  
Vol 368-370 ◽  
pp. 521-524
Author(s):  
Yue Lang Gan ◽  
Bo Peng ◽  
Hong Chen
Keyword(s):  
Computer Simulation ◽  
Energy Consumption ◽  
Lower Energy ◽  
Design Method ◽  
Building Design ◽  
Design Stage ◽  
Design Practice ◽  
Design Strategies ◽  
Microclimate Environment ◽  
Retrofit Design

Creating comfortable interior microclimate environment with comparatively lower energy consumption is one of the basic aims in building design. Combined with the comprehensive retrofit design practice of Wuhan construction building, the thesis investigates a set of practical building climatic design method which is based on computer simulation and analysis technology. Meanwhile, this article analyses the climatic design strategies of Wuhan construction building, and provides a references for architects in the conceptual design stage in the future.

Application of BIM Technology on Energy Efficiency Building Design

2014 ◽  
Vol 587-589 ◽  
pp. 283-286 ◽  
Author(s):  
Mei Zhang
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Saving ◽  
Design Method ◽  
Building Design ◽  
Building Energy ◽  
Information Modeling ◽  
Building Energy Consumption ◽  
Analysis Software ◽  
Building Model

According to the current application situation and domestic energy of our current building energy efficiency design analysis software, in view of the current traditional energy-saving design method can't meet the need of practical problems, put forward the BIM (building information modeling) analysis technology and building energy consumption are combined, anew design method for energy saving building. Application of BIM technology to create virtual building model contains all the information architecture, the virtual building model into the building energy analysis software, identification, automatic conversion and analyzing a large number of construction data information includes in the model, which is convenient to get the building energy consumption analysis.

Energy efficiency in the design of buildings

2007 ◽  
Author(s):  
Gerhard Dell ◽  
Christiane Egger
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Demand ◽  
Building Design ◽  
Space Heating ◽  
Design Strategies ◽  
External Energy ◽  
Increase Energy Efficiency ◽  
Energy Technologies ◽  
Private Households

The buildings sector accounts for 40% of European energy requirements. Two thirds of the energy used in European buildings is consumed by private households, and their consumption is growing every year as rising living standards lead to an increased use of air conditioning and heating systems. Research shows that more than one-fifth of the present energy consumption and up to 30–45 million tonnes of CO2 per year could be saved by 2010 by applying more ambitious standards both to new and refurbished buildings–these savings would represent a considerable contribution to meeting the European Kyoto targets (European Council, 2002). Without comprehensive measures, energy consumption and CO2 emissions from the building sector will continue to grow. Sustainable energy strategies for buildings will therefore increase in importance. Even today, so-called ‘zero emission buildings’ can be realized with existing planning approaches and technologies. Such buildings do not need an external energy input (for example from oil, gas or supplied electricity) other than solar energy. This is achieved by a combination of a high-level of energy efficiency and renewable energy technologies. This chapter focuses on buildings in the housing and service sectors, presents new building design strategies, technologies, and building components as well as the new legal framework set by the European Buildings Directive. It also discusses the question of raising awareness, and presents some thoughts on how changing life patterns may impact the buildings of the future. Residential buildings mainly need energy for space heating; with present building standards, space heating represents about 70% of the overall energy demand of existing buildings. In many European countries there are substantial efforts to increase energy efficiency—nevertheless, not all the potential for energy savings has been realized by far, and oil is still a major energy source for heating. In recent years, heat demand for new buildings was reduced significantly by technical measures. However, the number of low energy or passive buildings in Europe is still very limited, despite the fact that they can be constructed at acceptable costs.

scholarly journals Retrofitting an Existing Office Building in the UAE Towards Achieving Low-Energy Building

2020 ◽  
Vol 12 (6) ◽  
pp. 2573
Author(s):  
Maatouk Khoukhi ◽  
Abeer Fuad Darsaleh ◽  
Sara Ali
Keyword(s):  
Energy Consumption ◽  
Lower Energy ◽  
Energy Savings ◽  
Building Design ◽  
Office Building ◽  
Design Parameters ◽  
Base Case ◽  
Hvac System ◽  
Existing Buildings ◽  
Existing Building

Retrofitting an existing building can oftentimes be more cost-effective than building a new facility. Since buildings consume a significant amount of energy, particularly for heating and cooling, and because existing buildings comprise the largest segment of the built environment, it is important to initiate energy conservation retrofits to reduce energy consumption and the cost of heating, cooling, and lighting buildings. However, conserving energy is not the only reason for retrofitting existing buildings. The goal should be to create a high-performance building by applying an integrated, whole-building design process to the project during the planning phase that ensures that all key design objectives are met. This paper presents a real case study of the retrofitting of an existing building to achieve lower energy consumption. Indeed, most of the constructed buildings in the UAE are unsuitable for the region, which is characterized by a very harsh climate that causes massive cooling loads and energy consumption due to an appropriate selection of design parameters at the design level. In this study, a monthly computer simulation of energy consumption of an office building in Sharjah was carried out under UAE weather conditions. Several parameters, including the building orientation, heating, ventilation, and air conditioning (HVAC) system, external shading, window-to-wall ratio, and the U-values of the walls and the roof, were investigated and optimized to achieve lower energy consumption. The simulation shows that the best case is 41.7% more efficient than the real (original) case and 30.6% more than the base case. The most sensitive parameter in the retrofitting alternatives is the roof component, which affects the energy savings by 8.49%, followed by the AC system with 8.34% energy savings if well selected using the base case. Among the selected five components, a new roof structure contributed the most to the decrease in the overall energy consumption (approximately 38%). This is followed by a new HVAC system, which leads to a 37% decrease, followed by a new wall type with insulation, resulting in a 20% decrease.

scholarly journals ANALYSING THE GAP BETWEEN PREDICTED AND ACTUAL OPERATIONAL ENERGY CONSUMPTION IN BUILDINGS: A REVIEW

2021 ◽  
Author(s):  
M. Rajithan ◽  
◽  
D. Soorige ◽  
S.D.I.A. Amarasinghe ◽  
◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Building Design ◽  
Energy Performance ◽  
Vital Role ◽  
Energy Simulation ◽  
Design Stage ◽  
Performance Gap ◽  
Operational Energy ◽  
Significant Performance

Operational energy consumption in buildings has a crucial impact on global energy consumption. Nevertheless, significant energy savings can be achieved in buildings if properly designed, constructed, and operated. Building Energy Simulation (BES) plays a vital role in the design and optimisation of buildings. BES is used to compare the cost-effectiveness of energy-conservation measures in the design stage and assess various performance optimisation measures during the operational phase. However, there is a significant ‘performance gap’ between the predicted and the actual energy performance of buildings. This gap has reduced the trust and application of the BES. This article focused on investigating BES, reasons that lead to a performance gap between predicted and actual operational energy consumption of buildings, and the ways of minimising the gap. The article employed a comprehensive literature review as the research methodology. Findings revealed that reasons such as limited understanding of the building design, the complexity of the building design, poor commissioning, occupants’ behaviour, etc., influence the energy performance gap. After that, the strategies have been identified to minimise the energy performance gap such as proper commissioning, creating general models to observe occupants’ behaviour in buildings, and using the general models for energy simulation, ensuring better construction and quality through training and education, etc. Further, the findings of this study could be implemented by practitioners in the construction industry to effectively use energy simulation applications in designing energy-efficient and sustainable buildings.

Methodology for Preliminary Design of Buildings Using Multi-Objective Optimization Based on Performance Simulation

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Bruno Ramos Zemero ◽  
Maria Emília de Lima Tostes ◽  
Ubiratan Holanda Bezerra ◽  
Vitor dos Santos Batista ◽  
Carminda Célia M. M. Carvalho
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Optimization Model ◽  
Building Design ◽  
Building Energy ◽  
Design Guidelines ◽  
Building Envelope ◽  
Design Stage ◽  
Multi Objective Optimization ◽  
Multi Objective

Buildings' energy consumption has a great energetic and environmental impact worldwide. The architectural design has great potential to solve this problem because the building envelope exerts influence on the overall system performance, but this is a task that involves many objectives and constraints. In the last two decades, optimization studies applied to energy efficiency of buildings have helped specialists to choose the best design options. However, there is still a lack of optimization approaches applied to the design stage, which is the most influential stage for building energy efficiency over its entire life cycle. Therefore, this article presents a multi-objective optimization model to assist designers in the schematic building design, by means of the Pareto archived evolutionary strategies (PAES) algorithm with the EnergyPlus simulator coupled to evaluate the solutions. The search process is executed by a binary array where the array components evolve over the generations, together with the other building components. The methodology aims to find optimal solutions (OSs) with the lowest constructive cost associated with greater energy efficiency. In the case study, it was possible to simulate the process of using the optimization model and analyze the results in relation to: a standard building; energy consumption classification levels; passive design guidelines; usability and accuracy, proving that the tool serves as support in building design. The OSs reached an average of 50% energy savings over typical consumption, 50% reduction in CO2 operating emissions, and investment return less than 3 years in the four different weathers.

Significant Barriers Influencing Green Design Application among the Contractors in Construction Industry

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Heng Yong Ming ◽  
◽  
Zul Zakiyuddin Ahmad Rashid ◽  
Hamimah Adnan ◽  
◽  
...  
Keyword(s):  
Construction Industry ◽  
Quantitative Research ◽  
Building Design ◽  
Green Design ◽  
Design Stage ◽  
Design Practice ◽  
Innovative Strategy ◽  
Sustainable Environment ◽  
Financial Issue ◽  
Adoption Level

This paper aims to find out the vital barriers that affecting the implementation of Green Design practice, which is part of the Green Supply Chain Management (GSCM) application in construction industry. GSCM is an innovative strategy that integrates environmental and social considerations with involving all parties in product (building) design stage, procurement, materials sourcing and selection, completion and handover to the ultimate users without overlooking the end-of-life management of the product. By the same time, GSCM also can improve both short and long-term competitiveness and profitability of the organisation. Green design application can reduce the environmental effects throughout the product lifecycle by minimising the resources and energy consumption. The objectives of this study are to determine and analyse the critical barriers that preventing Green Design related activities among contractors in construction industry. Quantitative research method with survey questionnaire was employed in this study. Total 450 sets of questionnaire were distributed with 21.8% response rate. The independent variables in this study was the barriers of Green Design implementation while the dependent variable was the adoption level of Green Design practice in construction industry. In short, four (4) barriers are identified, which were Government Supports, Company Resources, Knowledge and Information, and Financial issue barriers. Results of the study shown that Government Supports and Company Resources barriers were significant for Green Design practice. Significance of this research is to provide a better understanding of green practices, such as GSCM, to deal with current environmental issues and to realise the recent problems and obstacles faced by all construction players, so that further actions are required for a successful GSCM implementation in order to move towards a sustainable environment in the future.

Research on Climate-Adaptable Passive Design Strategies of Rural Buildings in South of the Yangtze River Region of China

2016 ◽  
Vol 858 ◽  
pp. 241-248
Author(s):  
Bin Xu ◽  
Yu Ding ◽  
Wei Ju Yang
Keyword(s):  
Energy Consumption ◽  
Design Method ◽  
Test Method ◽  
Design Strategies ◽  
Rural Buildings ◽  
River Region ◽  
Orthogonal Test Method ◽  
Heating Load ◽  
Combination Mode ◽  
Design Factors

This paper studies the energy saving on the rural housing of the Jiangnan Region in China, by introducing the coupling analysis of climate response design method and orthogonal test method into the passive optimal design. Six design factors influencing energy consumption of rural buildings in this region are screened, combining with the energy consumption simulation and analysis software. Meanwhile, the analysis on climate-adaptable strategies, influence trend and importance on cooling & heating load of rural buildings imposed by various design factors, as well as the combination mode of design factors achieving the optimal cooling & heating load are obtained in order to play a certain guiding role in construction of rural buildings in this region.

scholarly journals Review on Urban Heat Island in China: Methods, Its Impact on Buildings Energy Demand and Mitigation Strategies

2021 ◽  
Vol 13 (2) ◽  
pp. 762
Author(s):  
Liu Tian ◽  
Yongcai Li ◽  
Jun Lu ◽  
Jue Wang
Keyword(s):  
Energy Consumption ◽  
Urban Heat Island ◽  
Building Energy ◽  
Design Stage ◽  
Heat Island ◽  
Building Energy Consumption ◽  
Rapid Urbanization ◽  
Substantial Impact ◽  
Urban Heat ◽  
The Impact

High population density, dense high-rise buildings, and impervious pavements increase the vulnerability of cities, which aggravate the urban climate environment characterized by the urban heat island (UHI) effect. Cities in China provide unique information on the UHI phenomenon because they have experienced rapid urbanization and dramatic economic development, which have had a great influence on the climate in recent decades. This paper provides a review of recent research on the methods and impacts of UHI on building energy consumption, and the practical techniques that can be used to mitigate the adverse effects of UHI in China. The impact of UHI on building energy consumption depends largely on the local microclimate, the urban area features where the building is located, and the type and characteristics of the building. In the urban areas dominated by air conditioning, UHI could result in an approximately 10–16% increase in cooling energy consumption. Besides, the potential negative effects of UHI can be prevented from China in many ways, such as urban greening, cool material, water bodies, urban ventilation, etc. These strategies could have a substantial impact on the overall urban thermal environment if they can be used in the project design stage of urban planning and implemented on a large scale. Therefore, this study is useful to deepen the understanding of the physical mechanisms of UHI and provide practical approaches to fight the UHI for the urban planners, public health officials, and city decision-makers in China.

scholarly journals Reducing the metabolic energy of walking and running using an unpowered hip exoskeleton

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Tiancheng Zhou ◽  
Caihua Xiong ◽  
Juanjuan Zhang ◽  
Di Hu ◽  
Wenbin Chen ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Design Method ◽  
Metabolic Cost ◽  
Metabolic Energy ◽  
Spring Stiffness ◽  
Spatiotemporal Parameters ◽  
The Common ◽  
Hip Flexion ◽  
Optimal Stiffness ◽  
Insight Into

Abstract Background Walking and running are the most common means of locomotion in human daily life. People have made advances in developing separate exoskeletons to reduce the metabolic rate of walking or running. However, the combined requirements of overcoming the fundamental biomechanical differences between the two gaits and minimizing the metabolic penalty of the exoskeleton mass make it challenging to develop an exoskeleton that can reduce the metabolic energy during both gaits. Here we show that the metabolic energy of both walking and running can be reduced by regulating the metabolic energy of hip flexion during the common energy consumption period of the two gaits using an unpowered hip exoskeleton. Methods We analyzed the metabolic rates, muscle activities and spatiotemporal parameters of 9 healthy subjects (mean ± s.t.d; 24.9 ± 3.7 years, 66.9 ± 8.7 kg, 1.76 ± 0.05 m) walking on a treadmill at a speed of 1.5 m s−1 and running at a speed of 2.5 m s−1 with different spring stiffnesses. After obtaining the optimal spring stiffness, we recruited the participants to walk and run with the assistance from a spring with optimal stiffness at different speeds to demonstrate the generality of the proposed approach. Results We found that the common optimal exoskeleton spring stiffness for walking and running was 83 Nm Rad−1, corresponding to 7.2% ± 1.2% (mean ± s.e.m, paired t-test p < 0.01) and 6.8% ± 1.0% (p < 0.01) metabolic reductions compared to walking and running without exoskeleton. The metabolic energy within the tested speed range can be reduced with the assistance except for low-speed walking (1.0 m s−1). Participants showed different changes in muscle activities with the assistance of the proposed exoskeleton. Conclusions This paper first demonstrates that the metabolic cost of walking and running can be reduced using an unpowered hip exoskeleton to regulate the metabolic energy of hip flexion. The design method based on analyzing the common energy consumption characteristics between gaits may inspire future exoskeletons that assist multiple gaits. The results of different changes in muscle activities provide new insight into human response to the same assistive principle for different gaits (walking and running).

scholarly journals How Lack of Knowledge and Tools Hinders the Eco-Design of Buildings—A Systematic Review

Urban Science ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 20
Author(s):  
Kikki Lambrecht Ipsen ◽  
Massimo Pizzol ◽  
Morten Birkved ◽  
Ben Amor
Keyword(s):  
Building Design ◽  
Future Research ◽  
Waste Generation ◽  
Design Strategies ◽  
Material Consumption ◽  
Building Sector ◽  
Environmental Consideration ◽  
Barriers To Implementation ◽  
Environmental Considerations ◽  
Lack Of Knowledge

The building sector is responsible for extensive resource consumption and waste generation, resulting in high pressure on the environment. A way to potentially mitigate this is by including environmental considerations during building design through the concept known as eco-design. Despite the multiple available approaches of eco-design, the latter is not easily achieved in the building sector. The objective of this paper is to identify and discuss what barriers are currently hindering the implementation of eco-design in the building sector and by which measures building designers can include environmental considerations in their design process. Through a systematic literature review, several barriers to implementation were identified, the main ones being lack of suitable legislation, lack of knowledge amongst building designers, and lack of suitable tools for designers to use. Furthermore, two specific tools were identified that allow the inclusion of environmental consideration in building design, along with nine design strategies providing qualitative guidance on how to potentially minimize energy and material consumption, as well as waste generation. This paper contributes a holistic overview of the major barriers to and existing tools and method for the eco-design of buildings, and provides guidance for both future research and practice.

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