scholarly journals Use of innovative low carbon materials for sustainable energy-efficient housing in Nigeria

2018 ◽  
Vol 4 (2) ◽  
pp. 11-15
Author(s):  
Albert Abiodun Olotuah ◽  
Ayobami Margaret Olotuah ◽  
Abiodun Olukayode Olotuah
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Carbon Materials ◽  
Sustainable Energy ◽  
Embodied Energy ◽  
Supplementary Cementitious Materials ◽  
Housing Construction ◽  
Low Carbon ◽  
Palm Oil Fuel Ash ◽  
Concrete Production

Sustainable energy-efficient housing is environmentally-conscious housing. Energy efficient houses consume less energy while maintaining or improving the comfort conditions of occupants. This paper examines low carbon initiatives in housing construction in Nigeria based on the use of stabilized soil blocks, solid interlocking blocks, and supplementary cementitious materials such as fly ash, rice husk ash, palm oil fuel ash, and their various combinations in concrete production as low carbon materials. These are materials readily available in Nigeria and can be useful for sustainable housing construction. Their use is for the purpose of reducing embodied energy in construction of houses and reduction of operational energy in housing use. Owing to the poor state of energy generation and transmission in Nigeria energy efficiency measures are imperative to reduce the energy required in houses. The paper thus affirms the need to adopt energy efficiency strategies in housing in order to achieve eco-friendly and sustainable environment in Nigeria.

Embodied Energy in Building Construction

2014 ◽  
Vol 70 (7) ◽  
Author(s):  
S. Balubaid ◽  
R. M. Zin ◽  
M. Z. Abd Majid ◽  
J. S. Hassan ◽  
Samihah Mardzuki
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Building Construction ◽  
Embodied Energy ◽  
Future Design ◽  
Efficient Construction ◽  
The Common ◽  
Energy Indicators ◽  
Construction Knowledge ◽  
The Right

Building construction systems that come in different forms and types need to be properly selected before being use, this may have different impact on overall embodied energy of the building construction. Hence, in order to achieve and maximize the construction contribution, the designer plays a big role in choosing the appropriate energy efficient construction. The designers need to be equipped with the right knowledge and tool which gathers a possible range of embodied energy indicators in order to select energy efficient construction. This paper aims at confirming the Malaysian common construction systems and compares it with the historical literature while it also explore energy efficiency in building construction. It is based on the common construction knowledge and also on the published literatures through a critical review of the possible range of embodied energy indicators and construction systems. The study demonstrated and confirmed that Malaysian common building construction systems can be categorized into six groups: Structural frame, Slab, Internal wall, External Wall, Roof and Staircase. This finding is highly significant for the future design in the area of energy efficiency.

SOME ASPECTS OF ENERGY EFFICIENCY IN HOUSING CONSTRUCTION IN RUSSIA

2020 ◽  
Vol 13 (2) ◽  
pp. 90-96
Author(s):  
E.V. Nezhnikova ◽  
◽  
M.V Chernyaev ◽  
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Real Estate ◽  
Energy Efficient ◽  
Residential Buildings ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
Housing Construction ◽  
Residential Real Estate ◽  
Domestic Legislation

The article presents the problems of ensuring energy efficiency of housing construction in the Russian Federation. Unfortunately, for a variety of reasons and, despite the existence of federal and regional legislation, today Russia does not pay due attention to this issue, which leads to an unreasonable increase in electricity consumption both during the creation of residential real estate objects and during their operation. 96 Экономические системы. 2020. № 2 Economic Systems. 2020. No. 2 The relevance of the topic is enhanced by significant energy consumption of residential buildings in use: more than 50% of electrical energy consumption falls on these real estate objects. Therefore, it is no coincidence, but a completely logical trend of the 21st century, that the governments of most countries popularized the idea of designing and building energy-efficient residential buildings. It was established that the improvement of domestic legislation in terms of energy efficiency has greatly improved the regulatory framework for the design and construction of energy-efficient residential real estate.

Energy efficiency in housing and socio-economic development in Nigeria

2019 ◽  
pp. 238-243
Author(s):  
Albert Olotuah A ◽  
Rukayyatu Tukur B ◽  
Kingsley Dimuna O ◽  
Abiodun Olotuah O ◽  
Olutunde Adesiji S ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Economic Development ◽  
Energy Efficient ◽  
Residential Buildings ◽  
Electricity Consumption ◽  
Electricity Supply ◽  
Low Carbon ◽  
Design Strategies ◽  
Energy Efficient Buildings ◽  
Socio Economic Development

Energy efficient houses consume less energy while maintaining or improving the comfort conditions of occupants. Energy efficient buildings result in less environmental impact and are economically and environmentally sustainable. Residential buildings account for the majority of electricity consumption in Nigeria. Because of the poor state of energy generation and transmission in Nigeria energy efficiency measures are necessary to reduce the energy required in houses. This would substantially reduce the dependence on the grid electricity supply. Energy efficient buildings have tremendous benefits in social, economic, and environmental terms. In economic terms the production of energy-efficient buildings result in growing market demand with higher quality and innovative buildings, and in social terms it leads to improved urban space and local climate, and liveable buildings. Energy efficient buildings also ensure resource efficiency, and reduction of Green House Gas emissions. Energy efficiency in buildings starts from the design of buildings, and through to construction and operation. The objective of this paper is the examination of energy efficiency in housing in Nigeria and its impact upon socio-economic development in the country. The paper focuses on energy-efficient design strategies, and initiatives to achieve low carbon emission in housing in Nigeria The paper examines the housing situation in Nigeria and the phenomenon of urbanisation which has led to unplanned urban growth, grievous housing poverty, slum formation, and near collapse of urban services and infrastructure particularly electricity supply. It affirms the need to adopt energy efficiency in housing and it examines passive design strategies and low carbon initiatives in housing construction. It takes a critical look at the adoption of sustainability practices in housing. The paper asserts that energy efficiency would enhance the growth of electricity consumption and boost the socio-economic development of the country. The paper concludes that energy efficiency is capable of engendering socio-economic development of the country particularly productivity and income growth.

scholarly journals Metals for Fuels? The Raw Material Shift by Energy-Efficient Transport Systems in Europe

Resources ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 49 ◽  
Author(s):  
Jens Teubler ◽  
Sebastian Kiefer ◽  
Christa Liedtke
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Savings ◽  
Ferrous Metal ◽  
Precious Metals ◽  
Raw Material ◽  
Transport Systems ◽  
Transport Sector ◽  
Low Carbon ◽  
Efficient Transport

The long-term transition towards a low-carbon transport sector is a key strategy in Europe. This includes the replacement of fossil fuels, modal shifts towards public transport as well as higher energy efficiency in the transport sector overall. While these energy savings are likely to reduce the direct greenhouse gas emissions of transport, they also require the production of new and different vehicles. This study analyses in detail whether final energy savings in the transport sector also induce savings for material resources from nature if the production of future vehicles is considered. The results for 28 member states in 2030 indicate that energy efficiency in the transport sector leads to lower carbon emissions as well as resource use savings. However, energy-efficient transport sectors can have a significant impact on the demand for metals in Europe. An additional annual demand for 28.4 Mt of metal ores was calculated from the personal transport sector in 2030 alone. The additional metal ores from semiprecious metals (e.g., copper) amount to 12.0 Mt, from precious metals (e.g., gold) to 9.1 Mt and from other metals (e.g., lithium) to 11.7 Mt, with small savings for ferrous metal ores (−4.6 Mt).

scholarly journals Life Cycle Energy Assessment of a School Building under Envelope Retrofit: An Approach towards Environmental Impact Reduction

2019 ◽  
Vol 111 ◽  
pp. 03028
Author(s):  
Nazanin Moazzen ◽  
Mustafa Erkan Karagüler ◽  
Touraj Ashrafian
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Energy Consumption ◽  
Energy Efficient ◽  
Embodied Energy ◽  
Rational Approach ◽  
Cycle Phase ◽  
School Building ◽  
The Impact

Energy efficiency of existing buildings is a concept to manage and restrain the growth in energy consumption and one of the crucial issues due to the magnitude of the sector. Educational buildings are in charge of about 15% of the total energy consumption of the non-residential building sector. However, not only operational but also embodied energy of a building should be reduced to get the overall benefits of energy efficiency, where, using energy efficient architectural measures and low emitting materials during every retrofit action can be a logical step. The majority of buildings in Turkey and EU was built earlier than the development of the energy efficiency in the construction sector, hence, without energy retrofit, consume an enormous amount of energy that can be averted significantly by the implementation of some even not advanced retrofit measures. Furthermore, demolishing of a building to construct a new one is not a rational approach concerning cost, time and environmental pollution. The study has been focused on the impact assessment of the various architectural scenarios of energy efficiency upgrading on the Life Cycle Energy Consumption (LCEC) and Life Cycle CO2 (LCCO2) emission. Within the scope of the study, a primary school building is selected to be analysed. Through analysis, the total embodied and operational energy use and CO2 emission regarding the life cycle phase of the building is quantitatively defined and investigated in the framework of life cycle inventory. The paper concentrates on the operation and embodied energy consumption arising from the application of a variety of measures on the building envelope. An educational building with low LCCO2 emissions and LCEC in Turkey is proposed. To exemplify the approach, contributions are applied to a case study in Istanbul as a representative school building. The primary energy consumption of the case study building is calculated with a dynamic simulation tool, EnergyPlus. Afterwards, a sort of architectural energy efficient measures is implemented in the envelope while the lighting and mechanical systems remain constant. The energy used in the production and transportation of materials, which are the significant parts of the embodied energy, are taken into account as well.

scholarly journals Energy-Efficient Products and Competitiveness in the Manufacturing Sector

2021 ◽  
Vol 7 (1) ◽  
pp. 33
Author(s):  
Giacomo Di Foggia
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Structural Equation ◽  
Business Performance ◽  
Structural Equation Models ◽  
Electrical Equipment ◽  
Regulatory Framework ◽  
Strategic Analysis ◽  
Low Carbon ◽  
Competitive Structure

Transition to a low-carbon, energy-efficient economy presents an opportunity to enhance the sustainability and competitiveness of manufacturing firms. The integration of energy-efficiency solutions into products resembles the concept of servitization that is now a lever for product competitiveness and, in turn, business performance. Based on empirical data from 293 manufacturers of electrical equipment or machinery and equipment, this paper analyzes the relation between energy-efficiency servitization capacity and performance using two structural equation models. To test the mediating role of servitization capacity, the first model uses strategic analysis of competitive structure to predict business performance, while the second model uses knowledge of the regulatory framework. Results suggest that both strategic analysis of competitive structure and knowledge of the regulatory framework positively influence performance via improving servitization capacity. With demand for new energy-efficient products expected to increase, products with a reduced energy footprint and energy-management services are needed for industrial processes to contribute to decarbonizing the economy.

Copper Companies as a Basis for Ensuring Their Global Competitiveness

2021 ◽  
Vol 20 (3) ◽  
pp. 428-460
Author(s):  
V. V. Krivorotov ◽  
◽  
A. V. Kalina ◽  
S. E. Erypalov ◽  
P. А. Koryakina ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Methodological Approach ◽  
Green Economy ◽  
Maximum Effect ◽  
Low Carbon ◽  
Tier System ◽  
Production Complex ◽  
Efficiency Indicators ◽  
Selection Of

The purpose of this study is to develop methodological tools and assess the energy efficiency of Russian copper companies in comparison with the world's leading competitors as the basis for ensuring their competitive development. It is shown that in today's conditions the defining vector of economic development in the leading countries of the world is the concept of low-carbon development and the implementation of the model of a «green economy, based on the introduction of energy-efficient low-carbon technologies that reduce energy intensity and the level of greenhouse gas emissions, on the widespread implementation of energy conservation policies and stimulating the rational use of energy resources A scientific and methodological approach to researching and increasing the competitiveness of companies based on their energy efficient development based on the use of a systematic approach and the principle of feedback between the company's competitiveness and the implementation of its energy efficient development strategy is proposed. A methodological approach to assessing the energy efficiency of companies has been developed, based on the use of indicative analysis and comparative analysis of energy efficiency indicators. Within the framework of the developed methodology, a system of indicators of the company's energy efficiency is proposed, which is based on a three-level assessment at the following levels: the level of the production complex as a whole; the level of certain types of products manufactured by the production complex; the level of the technological process for the production of products. Within the framework of the considered three-tier system, a block system of energy efficiency indicators of the company has been formed. The conceptual scheme of the methodology for the multicriteria selection of priority energy-efficient projects for the development of the company is proposed, based on a complex multi-stage procedure, as a result of the implementation of which the selection of the set of projects is made that will provide the maximum effect from the standpoint of increasing the company's energy efficiency. Practical testing of the proposed methodological developments was carried out in relation to the Ural Mining and Metallurgical Company - the largest domestic company in the field of copper and copper products production - in comparison with the world's leading competitors. The results of the approbation showed a significant lag of the company in a number of key energy efficiency indicators from the world's leading manufacturers.

SUSTAINABLE ENERGY EFFICIENCY DISTILLATION COLUMNS SEQUENCE DESIGN OF AROMATIC SEPARATION UNIT

2016 ◽  
Vol 78 (6-12) ◽  
Author(s):  
Muhammad Zakwan Zaine ◽  
Mohd. Faris Mustafa ◽  
Kamarul Asri Ibrahim ◽  
Norazana Ibrahim ◽  
Mohd. Kamaruddin Abd. Hamid
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Driving Force ◽  
Sustainable Energy ◽  
Optimal Sequence ◽  
Design Modification ◽  
Separation Unit ◽  
Distillation Columns ◽  
Force Method ◽  
Sustainability Analysis

Distillation operations became a major concern within sustainability challenge, which it becomes a primary target of energy saving efforts in industrially developed countries. However, there is still one problem, which is how do we improve the energy efficiency of the existing distillation columns systems by considering the sustainability criteria without having major modifications. Therefore, the objective of this paper is to present new improvement of existing methodology by including a sustainability analysis to design an optimal sequence of energy efficient distillation columns. Accordingly, the methodology is divided into four hierarchical sequential stages: i) existing sequence sustainability analysis, ii) optimal sequence determination, iii) optimal sequence sustainability analysis, and iv) sustainability comparison and design modification. The capability of this methodology is tested in designing an optimal sustainable energy efficient distillation columns sequence of aromatics separation unit using a simple and reliable short-cut method within Aspen HYSYS® simulation environment. The energy and sustainability analysis is performed and shows that the optimal sequence determined by the driving force method has better energy reduction with total of 6.78 % energy savings and 0.16 % sustainability reduction compared to existing sequence with. In addition, the economic analysis shows that the return of investment of 3.10 with payback period of 4 months. It can be concluded that, the sequence determined by the driving force method is not only capable in reducing energy consumption, but also has better sustainability index for aromatic separation unit.

scholarly journals India’s initiatives on Improving Energy Efficiency in Aluminium Industries

2015 ◽  
Vol 2 (2) ◽  
pp. 53-60
Author(s):  
Piyush Verma ◽  
Alka Verma ◽  
Anupam Agnihotri
Keyword(s):  
Energy Efficiency ◽  
Growth Curve ◽  
Energy Efficient ◽  
Low Cost ◽  
Gdp Growth ◽  
Low Carbon ◽  
Indian Economy ◽  
Skilled Manpower ◽  
Important Player ◽  
State Of Art

India is an important player in the aluminium, especially because of its abundant bauxite reserves and low-cost skilled manpower. The sector has a significant importance in the growth of Indian economy since the aluminium consumption follows GDP growth curve. Indian aluminium sector is observed as one of the energy intensive sectors with ample scope for improvements in energy efficiency as compared to world standards. The aluminium industries are upgrading themselves by adapting state-of-art technologies, which are more energy-efficient and sustainable in a highly competitive market. These initiatives are further accelerated and motivated by an innovative incentivization scheme (called Perform, Achieve and Trade) of Govt. of India. Currently, the first phase (2012-15) is under implementation, and an unexpected movement towards energy efficiency is envisaged as a result that will ultimately lead towards production of low carbon aluminium for the society.  

scholarly journals An assessment of the impact of selected construction materials on the life cycle energy performance and thermal comfort in buildings

2021 ◽  
Author(s):  
◽  
Rajesh Haripersad
Keyword(s):  
South Africa ◽  
Energy Efficiency ◽  
Life Cycle ◽  
Thermal Comfort ◽  
Thermal Performance ◽  
Energy Efficient ◽  
Construction Materials ◽  
Embodied Energy ◽  
Energy Usage ◽  
The Impact

South Africa is a developing country with various construction projects that are being undertaken both by government and the private sector. The requirements for the construction of energy-efficient buildings as well as the selection methods for providing construction materials have hence become important. Energy efficiency improvements needs to be implemented in the construction of these buildings in order to decrease energy usage and costs and provide more comfortable conditions for its occupants. Previous studies revealed that most of the focus for improving energy efficiency in buildings has been on their operational emissions. It is estimated that about 30% of all energy consumed throughout the lifetime of a building is utilized as embodied energy (this percentage varies based on factors such as age of building, climate and materials). In the past this percentage was much lower, but with increased emphasis placed on reducing operational emissions (such as energy efficiency improvements in heating and cooling systems), the embodied energy contribution has become more significant. Hence, it is important to employ a life-cycle carbon framework in analysing the carbon emissions in buildings. The study aims to augment energy efficiency initiatives by showcasing energy reduction strategies for buildings. The study assessed the thermal performance of selected construction materials by analysing different buildings using energy modelling program, EnergyPlus and TRNSYS. The parametric study was set in the central plateau region of South Africa and was performed to determine appropriate energy efficiency improvements that can be implemented for maximum savings. A life cycle cost analysis was performed on the selected improvements. The models created are representative of the actual buildings when simulated data is compared to recorded data from these buildings. Results showed a significant variation in energy and construction costs with varying construction materials over the buildings’ life cycle. Findings suggest that there is a significant reduction in energy usage when simple efficiency measures are implemented. The study recommends the use of different energy efficient building materials and the implementation of passive interventions in the constructing of buildings; the thermal performance of a building be optimized to ensure thermal comfort and the developed model be adopted for use in the engineering and construction industry for the reduction of energy consumption.

Sign in / Sign up

Export Citation Format

Share Document