The Structure of Energy Demand and Energy Conservation

1987 ◽  
Vol 8 (01) ◽  
Author(s):  
Joy Dunkerley ◽  
Michele Gottlieb
Keyword(s):  
Energy Conservation ◽  
Energy Demand

scholarly journals Energy Conservation and Efficiency by Energy Efficient Motor in India

2019 ◽  
Vol 9 (1) ◽  
pp. 3917-3926
Keyword(s):  
Energy Consumption ◽  
Energy Conservation ◽  
Greenhouse Gas ◽  
Energy Efficient ◽  
Energy Demand ◽  
Industrial Sector ◽  
Primary Energy ◽  
Primary Energy Consumption ◽  
Ghg Emission ◽  
The Government

Electricity demand in India is increasing at a rapid pace because of growth in Economy, urbanization, infrastructure development and the living standard of people. According to the United Nation’s world population prospects (2017), India’s population is 1.34 billion which will go grow further and surpass China by 2025[1]. According to the IMF, the Indian economy is expected to grow by 7.5% in FY19-20 and 7.7% in FY20-21[2]. Increased population and growth in GDP are associated with increased energy demand. India’s primary energy consumption was 754 Mtoe in 2017 and expected to reach 1928 Mtoe in 2040[3]. Major energy demand is from the Industrial sector which was 51% of total primary energy consumption in 2017 and expected to reach 990 Mtoe, by 2040 [3]. Rising energy demand and dependence on coal-based energy generation capacity, leading to the emission of Green House Gases (GHG). Most of India’s Greenhouse gas emissions are from energy sector having 68.7% contribution in overall greenhouse gas emission. Agriculture, Industrial process land-use change and forestry (LUCF), and waste, contributed 6.0%, 3.8% and 1.9% respectively in overall GHG emission in 2014. [4]. Reducing the GHG emission in India is a major challenge in front of the Government as the Government has to maintain sustainable growth with the contribution in mitigating the effect of climate change. Govt. has pledged to Paris Agreement for the reduction in emission intensity of GDP by 33-35% by 2030 below 2005 level [5]. In the reduction of GHG emission, energy efficiency's contribution is estimated at approx. 51% [6]. The industrial sector can contribute most in reducing GHG emission and contributes to nationally determined contribution. Industry consumes 40%-45% of total energy consumption and motor-driven system consumes 70% [7] of total Industrial energy. Most of the energy in Industries are consumed to run the motor for various purposes and consumes a major chunk of energy which can be reduced to a significant level by replacing the standard motor with energy efficient motor. 90% of the motor in Indian industries are IE1 or below IE1 standard [8] and required replacement. By installing the energy efficient motor, the industry can save huge energy, cost and reduce CO2 emission. Observing the opportunity for energy saving by energy efficient motor, this paper aims to analyze how energy efficient motor is capable of reducing energy consumption, and how it can contribute to energy conservation. Methodology adopted in this paper is secondary research, that answers to questions like; why Industry need energy efficient motor, how energy efficient motor can save energy and increases efficiency, cost-benefit analysis of installing energy efficient motor, barriers to the installation of energy efficient motor and solution to those barriers in migration from the standard motor to energy efficient motor in India.

User preferences for communication channels on energy conservation

Facilities ◽  
2019 ◽  
Vol 37 (13/14) ◽  
pp. 1066-1081
Author(s):  
Low Sheau-Ting ◽  
Mastura Mohd Basri Baharan ◽  
Choong Weng-Wai ◽  
Wee Siaw-Chui
Keyword(s):  
Energy Conservation ◽  
Conjoint Analysis ◽  
Empirical Data ◽  
Energy Demand ◽  
Data Gathering ◽  
Communication Channels ◽  
User Preferences ◽  
Office Building ◽  
Content Type ◽  
Expert Interview

Purpose The purpose of this paper is to identify the preferred communication channels to foster energy conservation behaviour among office building users. Energy demand from the commercial sector in Malaysia is, at 33.2 per cent, the highest after the industry sector, at 45.1 per cent. The country’s progress in actively practising energy conservation is lacking, despite various energy conservation programmes having been launched in recent years. A large amount of energy is wasted by users’ poor energy conservation behaviour. To market voluntary energy conservation behaviour, the delivery of energy conservation messages using the appropriate communication channels remains an important strategy. Design/methodology/approach This paper involves two-stage data collection. The communication categories associated with a set of channels identified from expert interview serve as the basis for the second stage of empirical data gathering using conjoint analysis. A choice-based conjoint analysis assisted by Sawtooth Software is used to analyse the 525 usable empirical data gathered from a final questionnaire survey among the office building users in Malaysia. Findings This paper has identified five communication categories associated with a total of 19 channels. The mass media is acknowledged as the most preferred communication channel among office building users in the marketing of energy conservation behaviour, while the least preferred channel to communicate energy conservation information is audio-visual media. Originality/value This study contributes to existing literature with a novel case in Malaysia office building by identifying the preferred combination of communication channels in fostering energy conservation behaviour. The findings could benefit the building managers in marketing energy conservation behaviour among office building users to effectively achieve the desired change for sustainable development.

scholarly journals Revealing the Impacts of Passive Cooling Techniques on Building Energy Performance: A Residential Case in Hong Kong

2020 ◽  
Vol 10 (12) ◽  
pp. 4188 ◽  
Author(s):  
Chuan-Rui Yu ◽  
Han-Sen Guo ◽  
Qian-Cheng Wang ◽  
Rui-Dong Chang
Keyword(s):  
Hong Kong ◽  
Energy Conservation ◽  
Energy Demand ◽  
Natural Ventilation ◽  
Phase Change Materials ◽  
Residential Buildings ◽  
Building Energy ◽  
Energy Performance ◽  
Passive Cooling ◽  
Total Energy Consumption

Environmental concerns and growing energy costs raise the importance of sustainable development and energy conservation. The building sector accounts for a significant portion of total energy consumption. Passive cooling techniques provide a promising and cost-efficient solution to reducing the energy demand of buildings. Based on a typical residential case in Hong Kong, this study aims to analyze the integration of various passive cooling techniques on annual and hourly building energy demand with whole building simulation. The results indicate that infiltration and insulation improvement are effective in regard to energy conservation in buildings, while the effectiveness of variations in building orientation, increasing natural ventilation rate, and phase change materials (PCM) are less significant. The findings will be helpful in the passive house standard development in Hong Kong and contribute to the further optimization work to realize both energy efficiency and favorably built environments in residential buildings.

scholarly journals Vitamin and Amino Acid Auxotrophy in Anaerobic Consortia Operating under Methanogenic Conditions

mSystems ◽  
2017 ◽  
Vol 2 (5) ◽  
Author(s):  
Valerie Hubalek ◽  
Moritz Buck ◽  
BoonFei Tan ◽  
Julia Foght ◽  
Annelie Wendeberg ◽  
...  
Keyword(s):  
Energy Conservation ◽  
Public Good ◽  
Microbial Communities ◽  
Energy Demand ◽  
High Energy ◽  
Microbial Interactions ◽  
Chemical Transformations ◽  
Pollutant Degradation ◽  
Toxic Compounds ◽  
And Function

ABSTRACT Microbial interactions between Archaea and Bacteria mediate many important chemical transformations in the biosphere from degrading abundant polymers to synthesis of toxic compounds. Two of the most pressing issues in microbial interactions are how consortia are established and how we can modulate these microbial communities to express desirable functions. Here, we propose that public goods (i.e., metabolites of high energy demand in biosynthesis) facilitate energy conservation for life under energy-limited conditions and determine the assembly and function of the consortia. Our report suggests that an understanding of public good dynamics could result in new ways to improve microbial pollutant degradation in anaerobic systems. Syntrophy among Archaea and Bacteria facilitates the anaerobic degradation of organic compounds to CH4 and CO2. Particularly during aliphatic and aromatic hydrocarbon mineralization, as in the case of crude oil reservoirs and petroleum-contaminated sediments, metabolic interactions between obligate mutualistic microbial partners are of central importance. Using micromanipulation combined with shotgun metagenomic approaches, we describe the genomes of complex consortia within short-chain alkane-degrading cultures operating under methanogenic conditions. Metabolic reconstruction revealed that only a small fraction of genes in the metagenome-assembled genomes encode the capacity for fermentation of alkanes facilitated by energy conservation linked to H2 metabolism. Instead, the presence of inferred lifestyles based on scavenging anabolic products and intermediate fermentation products derived from detrital biomass was a common feature. Additionally, inferred auxotrophy for vitamins and amino acids suggests that the hydrocarbon-degrading microbial assemblages are structured and maintained by multiple interactions beyond the canonical H2-producing and syntrophic alkane degrader-methanogen partnership. Compared to previous work, our report points to a higher order of complexity in microbial consortia engaged in anaerobic hydrocarbon transformation. IMPORTANCE Microbial interactions between Archaea and Bacteria mediate many important chemical transformations in the biosphere from degrading abundant polymers to synthesis of toxic compounds. Two of the most pressing issues in microbial interactions are how consortia are established and how we can modulate these microbial communities to express desirable functions. Here, we propose that public goods (i.e., metabolites of high energy demand in biosynthesis) facilitate energy conservation for life under energy-limited conditions and determine the assembly and function of the consortia. Our report suggests that an understanding of public good dynamics could result in new ways to improve microbial pollutant degradation in anaerobic systems.

scholarly journals ENERGY KNOWLEDGE IN INFLUENCING HOUSEHOLD’S ENERGY CONSERVATION BEHAVIOUR

2021 ◽  
Vol 6 (26) ◽  
pp. 215-222
Author(s):  
Nur Azzlin Mangsor ◽  
Low Sheau-Ting
Keyword(s):  
Climate Change ◽  
Energy Consumption ◽  
Energy Conservation ◽  
Psychological Factors ◽  
Energy Demand ◽  
Household Energy ◽  
Household Energy Consumption ◽  
Residential Sector ◽  
Increasing Trend

Malaysia needs to ensure stable energy consumption to improve environmental quality and energy security. The increasing trend of the country’s population growth and economic development are parallel with the country’s overall energy demand. The building sector, commercial and residential sector has contributed to more than 12% of the country's final energy consumption in the year 2018. The energy demand from the household sector is on an increasing trend. The residential sector is responsible for the increasing trend of energy consumption with the improvement of lifestyle and living standards. Variation in residents’ behaviour can cause significant differences in energy consumption due to dwellings, household size, income, and building energy consumption. Past studies have shown the identification of the relevant psychological factors that formulating energy conservation behaviour contributed to household energy consumption reduction. By focusing on the psychological dimension, this study explores the role of energy knowledge in influencing energy conservation behaviour among households in Malaysia. Energy knowledge is about the household’s understanding in the context of energy-saving and consumption. Despite massive information and awareness of climate change about the contribution of climate change from household energy consumption, many households still do not practice energy conservation actively. By conducting a systematic literature review, this study found that energy knowledge plays an essential role in influencing household energy conservation behaviour. The findings of this study could help the institutions and relevant authorities to gain a better understanding of the role of energy knowledge as one of the psychological factors in household energy conservation behaviour.

scholarly journals Optimization of Greenhouse Thermal Screens for Maximized Energy Conservation

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3592 ◽  
Author(s):  
Rasheed ◽  
Na ◽  
Lee ◽  
Kim ◽  
Lee
Keyword(s):  
Energy Conservation ◽  
Energy Demand ◽  
Control Strategies ◽  
Energy Requirement ◽  
Winter Season ◽  
Weather Conditions ◽  
Heat Energy ◽  
Proposed Model ◽  
Thermal Screen ◽  
Transient System

In this work, we proposed a Building Energy Simulation (BES) dynamic climatic model of greenhouses by utilizing Transient System Simulation (TRNSYS 18) software to study the effect of use of different thermal screen materials and control strategies of thermal screens on heat energy requirement of greenhouses. Thermal properties of the most common greenhouse thermal screens were measured and used in the BES model. Nash-Sutcliffe efficiency coefficients of 0.84 and 0.78 showed good agreement between the computed and experimental results, thus the proposed model appears to be appropriate for performing greenhouse thermal simulations. The proposed model was used to evaluate the effects of different thermal screens including; Polyester, Luxous, Tempa, and Multi-layers, as well as to evaluate control strategies of greenhouse thermal screens, subjected to Daegu city, (latitude 35.53 °N, longitude 128.36 °E) South Korea winter season weather conditions. Obtained results show that the heating requirement of greenhouses with multi-layer night thermal screens was 20%, 5.4%, and 13.5%, less than the Polyester, Luxous, and Tempa screens respectively. Thus, our experiments confirm that the use of multi-layered thermal screen can reduce greenhouse heat energy requirement. Furthermore, screen-control with outside solar radiation at an optimum setpoint of 60 W·m−2 significantly influences the greenhouse’s energy conservation capacity, as it exhibited 699.5 MJ · m−2, the least energy demand of all strategies tested. Moreover, the proposed model allows dynamic simulation of greenhouse systems and enables researchers and farmers to evaluate different screens and screen control strategies that suit their investment capabilities and local weather conditions.

Behaviour of Ibadan City Households Towards Energy Conservation

2016 ◽  
Vol 7 (2) ◽  
pp. 39-55 ◽  
Author(s):  
Stephen Enyinnaya Eluwa ◽  
Ho Chin Siong
Keyword(s):  
Energy Conservation ◽  
Low Income ◽  
Energy Demand ◽  
Age Groups ◽  
Household Survey ◽  
Income Group ◽  
Current Debate ◽  
Psychological Variables ◽  
Demographic Groups ◽  
Gender And Age

Energy consumption of household sector constitutes major share in the total energy demand of most developing countries. However, much of the current debate on global warming and energy reduction seems to focus more on the industrial and transport sectors. Using discriminant analytical approach, the authors investigated the influence of psychological variables vis-a-vis attitude and perceived behavioural control (PBC) on energy conservation behaviour of Ibadan city residents, Nigeria. Through a household survey, 822 respondents were sampled across the residential neighbourhoods of the city. The study builds a model that contains variables with the most predictive power in discriminating respondents based on their socio-demographic groups. Results indicate that two variables significantly separate the income-groups based on attitudinal readiness to engage in energy conservation, while three variables separate the gender and age groups. In addition, results show that low income group, elderly and females are more willing to adopt energy saving measures.

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