Investigation of Energy Risk in Pre-Construction Stage: A Qualitative Approach

2021 ◽  
Vol 15 (S1) ◽  
pp. 39-45
Author(s):  
Mohammad Syabilee Nikman Lee ◽  
Sulzakimin Mohamed ◽  
Roshartini Omar ◽  
Norliana Sarpin ◽  
Haryati Shafii ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Structured Interview ◽  
Design Stage ◽  
Building Performance ◽  
Design Strategies ◽  
Construction Stage ◽  
Planning Stage ◽  
Potential Impact ◽  
The Impact

The energy demand growth every year for existing building due to the natural lifecycle of the building performance. Systematic strategy in retrofitting is proven to revamp the energy building performance. However, the retrofitting process is facing several of unknown risk as early in pre-construction stage to achieve optimum energy efficiency design strategy. The risk requires strategic assessment to minimize the impact towards the efficiency level in retrofitting. This study aims to examine the risks and the potential impact towards design strategies by conducting a semi-structured interview from six internal stakeholders in the retrofit project. The result derived from the interview revealed that there are 13 of major risks involve in retrofit project and divided into planning stage and design stage. All the risks are proven to provide a potential impact towards energy efficiency design strategies.

Classification of Construction Waste Generation Attributes in Project Life Cycle

2021 ◽  
Vol 4 (2) ◽  
pp. 56-61
Author(s):  
Shahzad Ali ◽  
Aftab Hameed Memon ◽  
Tauha Hussain Ali
Keyword(s):  
Construction Projects ◽  
Structured Interview ◽  
Design Stage ◽  
Extensive Literature ◽  
Waste Generation ◽  
Construction Stage ◽  
Planning Stage ◽  
Construction Waste ◽  
Project Life Cycle ◽  
Project Life

Waste generation is a major issue faced by construction projects. Construction waste has adverse effects the time, cost, productivity and economy of the industry. There are different causes of waste generation in different countries of the world. An extensive literature was carried out to identify the common factors of construction waste generation which resulted in identifying 59 common attributes. Through structured interview data was collected to classify the attributes on different stages of construction project lifecycle. A total of 15 experienced practitioners were interviewed classify the attributes into different stages of project life i.e. planning, design, construction and finishing. Frequency analysis of the perception of the practitioners showed that there are 25 attributes in planning stage, 9 in design stage, 53 in construction stage and 5 in finishing stage. From the findings it can be seen that construction stage is the critical stage in which 53 attributes are occurring. This study shows that the practitioners need to be very careful during construction phase for controlling construction waste generation.

scholarly journals Impact of Passive Energy Efficiency Measures on Cooling Energy Demand in an Architectural Campus Building in Karachi, Pakistan

2021 ◽  
Vol 13 (13) ◽  
pp. 7251
Author(s):  
Mushk Bughio ◽  
Muhammad Shoaib Khan ◽  
Waqas Ahmed Mahar ◽  
Thorsten Schuetze
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Electricity Consumption ◽  
Information Modeling ◽  
Base Case ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
The Impact ◽  
Cooling Energy Demand ◽  
Campus Building

Electric appliances for cooling and lighting are responsible for most of the increase in electricity consumption in Karachi, Pakistan. This study aims to investigate the impact of passive energy efficiency measures (PEEMs) on the potential reduction of indoor temperature and cooling energy demand of an architectural campus building (ACB) in Karachi, Pakistan. PEEMs focus on the building envelope’s design and construction, which is a key factor of influence on a building’s cooling energy demand. The existing architectural campus building was modeled using the building information modeling (BIM) software Autodesk Revit. Data related to the electricity consumption for cooling, building masses, occupancy conditions, utility bills, energy use intensity, as well as space types, were collected and analyzed to develop a virtual ACB model. The utility bill data were used to calibrate the DesignBuilder and EnergyPlus base case models of the existing ACB. The cooling energy demand was compared with different alternative building envelope compositions applied as PEEMs in the renovation of the existing exemplary ACB. Finally, cooling energy demand reduction potentials and the related potential electricity demand savings were determined. The quantification of the cooling energy demand facilitates the definition of the building’s electricity consumption benchmarks for cooling with specific technologies.

A Dynamic Analysis Of The Impact Of Air Pollution On The daylight Availability In An Open-plan Office In London

2021 ◽  
pp. 94-103
Author(s):  
Jiangtao Du ◽  
Steve Sharples
Keyword(s):  
Air Pollution ◽  
Urban Areas ◽  
Simulation Analysis ◽  
Design Stage ◽  
Design Strategies ◽  
Early Design Stage ◽  
Pollutant Deposition ◽  
Open Plan ◽  
Building Project ◽  
The Impact

The deposition of air pollutants on glazing can significantly affect the daylight transmittance of building fenestration systems in urban areas. This study presents a simulation analysis of the impact of air pollution and glazing visual transmittance on indoor daylight availability in an open-plan office in London. First, the direct links between glazing visual transmittance and daylighting conditions were developed and assessed. Second, several simple algorithms were established to estimate the loss of daylight availability due to the pollutant deposition at the external surface of vertical glazing. Finally, some conclusions and design strategies to support facade planning at the early design stage of an urban building project were developed.

Sustainable energy solutions for thermal load in buildings - Role of heat pumps, solar thermal, and hydrogen-based cogeneration systems

2021 ◽  
pp. 1-25
Author(s):  
Praveen Cheekatamarla ◽  
Vishaldeep Sharma ◽  
Bo Shen
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Carbon Footprint ◽  
Energy Demand ◽  
Primary Energy ◽  
Heat Pumps ◽  
Total Carbon ◽  
Coefficient Of Performance ◽  
Renewable Energy Resources ◽  
The Impact

Abstract Economic and population growth is leading to increased energy demand across all sectors – buildings, transportation, and industry. Adoption of new energy consumers such as electric vehicles could further increase this growth. Sensible utilization of clean renewable energy resources is necessary to sustain this growth. Thermal needs in a building pose a significant challenge to the energy infrastructure. Supporting the current and future building thermal energy needs to offset the total electric demand while lowering the carbon footprint and enhancing the grid flexibility is presented in this study. Performance assessment of heat pumps, renewable energy, non-fossil fuel-based cogeneration systems, and their hybrid configurations was conducted. The impact of design configuration, coefficient of performance (COP), electric grid's primary energy efficiency on the key attributes of total carbon footprint, life cycle costs, operational energy savings, and site-specific primary energy efficiency are analyzed and discussed in detail.

Thermal Bridges Minimizing through Typical Details in Low Energy Designing

2014 ◽  
Vol 899 ◽  
pp. 62-65 ◽  
Author(s):  
Rastislav Ingeli ◽  
Boris Vavrovič ◽  
Miroslav Čekon
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Energy Demand ◽  
Building Energy ◽  
Building Envelope ◽  
Low Energy ◽  
Building Energy Efficiency ◽  
Low Energy Buildings ◽  
Thermal Bridges ◽  
The Impact

Energy demand reduction in buildings is an important measure to achieve climate change mitigation. It is essential to minimize heat losses in designing phase in accordance of building energy efficiency. For building energy efficiency in a mild climate zone, a large part of the heating demand is caused by transmission losses through the building envelope. Building envelopes with high thermal resistance are typical for low-energy buildings in general. In this sense thermal bridges impact increases by using of greater thickness of thermal insulation. This paper is focused on thermal bridges minimizing through typical system details in buildings. The impact of thermal bridges was studied by comparative calculations for a case study of building with different amounts of thermal insulation. The calculated results represent a percentage distribution of heat loss through typical building components in correlation of various thicknesses of their thermal insulations.

scholarly journals Consumers' Response to State Energy Efficient Appliance Rebate Programs

2017 ◽  
Vol 9 (4) ◽  
pp. 227-255 ◽  
Author(s):  
Sébastien Houde ◽  
Joseph E. Aldy
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Demand ◽  
State Energy ◽  
Government Expenditure ◽  
Order Of Magnitude ◽  
Term Energy ◽  
The Impact

Through an evaluation of the 2009 Recovery Act's State Energy Efficient Appliance Rebate Program, this paper examines consumers' response to energy efficiency rebates. The analysis shows that 70 percent of consumers claiming a rebate were inframarginal and an additional 15 percent–20 percent of consumers simply delayed their purchases by a few weeks. Consumers responded to rebates by upgrading to higher quality, but less energy-efficient models. Overall the impact of the program on long-term energy demand is likely to be small. Measures of government expenditure per unit of energy saved are an order of magnitude higher than estimates for other energy efficiency programs. (JEL D12, H31, H71, Q48)

scholarly journals Energy Efficiency Analysis in Buildings using Dynamic Simulations

2017 ◽  
Vol 2 (5) ◽  
pp. 1
Author(s):  
Elena Eftimie
Keyword(s):  
Energy Efficiency ◽  
Energy Performance ◽  
Design Stage ◽  
Dynamic Simulations ◽  
Heating Systems ◽  
Use Phase ◽  
Comfort Parameters ◽  
The Impact

This paper proposes an analysis of factors that have a significant impact on energy efficiency in buildings. Thus, as a first objective proposes an analysis of the impact of rehabilitation and modernization of buildings in view of their energy performance improvement. A second followed objective consisted of the study of some production and use thermal energy systems in order to increase the thermal comfort. Based on a case study, this paper provides the opportunity for comparative analyses both among different insulation materials for buildings and among different heating systems. Determination of energy consumption for space heating and of the building comfort parameters was achieved using dynamic simulations by means of TRNSYS program; it was envisaged that the assessment of energy efficiency in buildings, the design stage or before their rehabilitation, is more economical than finding solutions in the use phase of buildings.

scholarly journals Industrial space in Bydgoszcz

2021 ◽  
Vol 1203 (3) ◽  
pp. 032028
Author(s):  
Piotr Brzeziński
Keyword(s):  
Urban Space ◽  
Rapid Development ◽  
Industrial Area ◽  
Design Stage ◽  
Planning Stage ◽  
Industrial Areas ◽  
Positive Effects ◽  
Industrial Space ◽  
Macro Scale ◽  
The Impact

Abstract Because of its specific, industrial space, a challenge from the planning stage to the design stage is constituted. Proper zoning of this space has positive effects on the industrial function, spatial exposure and environmental impact. Proper creation of industrial areas means the impact of these processes on a macro scale. Local government authorities have the most important influence on the formation of industrial areas, which are necessary for the functioning and economic development of a region. The right regional development policy is what places the industrial space in symbiosis with areas of a different purpose. The most important is the selection of an appropriate space - an enclave, where this specific function can exist and be developed without affecting the surroundings, which may be the adjacent urban space. Due to its specifics, locating of industrial areas has a fundamental role in these multifaceted processes. Bydgoszcz Industrial and Technological Park (BPPT) is the biggest industrial area in the district and one of the biggest industrial and technological parks in Poland. As city authorities say “According to the independent report of the World Bank “Doing Business in Poland 2015”, Bydgoszcz is the best city for investment. The potential of the Park and his rapid development are found disregarding not only amongst investors, but also amongst other operators receiving the BPPT infrastructure.” Referred to the above, there are several important questions. How do these assumptions relate to the industrial zone if an urban area is in the close neighbourhood? How should the development of industrial spaces look like, so that it does not adversely affect urban living space? How do the above assumptions refer to the Bydgoszcz Industrial and Technological Park (BPPT)? The matrix presented in the article compares the general assumptions of the interactions of industrial processes and their application for the Bydgoszcz Industrial and Technological Park.

scholarly journals Energy simulation supported sketch plan optimization of the University of Pécs, Medical School extension

2020 ◽  
Vol 15 (2) ◽  
pp. 178-186
Author(s):  
Dóra Noémi Zetz ◽  
István Kistelegdi
Keyword(s):  
Medical School ◽  
Thermal Energy ◽  
Energy Demand ◽  
Cost Savings ◽  
Design Stage ◽  
Performance Goal ◽  
Energy Simulations ◽  
Sketch Plan ◽  
The University ◽  
The Impact

Abstract:A building physics supported development was undertaken for the new block of the University of Pécs, Medical School. During sketch design stage climate, lighting and energy simulations were applied to quantify energy optimization strategies. Simulation cases assess the impact of shading technologies, wall-window ratios and thermal masses on used thermal energy demand. Based on a previous study about visual and comfort performance, goal was to identify the highest energy efficiency rates with maximum investment cost savings. Besides best comfort results, the most optimal development represents 9% saving in used thermal energy, and they were proposed for further design.

scholarly journals A LIFE CYCLE ENERGY COMPARISON OF THREE WORLD EXPO BUILDINGS

2011 ◽  
Vol 6 (3) ◽  
pp. 151-167 ◽  
Author(s):  
Shanshan Shen ◽  
Brenda Vale ◽  
Robert Vale
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Energy Demand ◽  
Energy Use ◽  
Embodied Energy ◽  
Environmental Damage ◽  
Building Performance ◽  
Energy Flows ◽  
World Expo ◽  
Whole Life Cycle

Over the last hundred years the booming exhibition industry has promoted development, which in turn has led to environmental damage. The construction of exhibition buildings has been part of this phenomenon. At first sight improvement in energy efficiency techniques would seem to offset the increased energy demand from both exhibitions and exhibition buildings. However, whether energy efficiency technologies truly help to improve building performance to the point where a building is ‘environmentally friendly’ throughout its whole life-cycle is uncertain. This research is part of investigating whether energy efficiency technologies are really the easiest means to lower costs and energy requirements when the whole useful life of an exhibition building is considered. This article investigates the energy use of three case study buildings based on their operating and embodied energy flows. The results suggest that modern technologies for making exhibition buildings more sustainable may not be as effective as the simpler strategies used over 100 years ago. This suggests a different approach may be needed for sustainable development in the twenty first century.

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