scholarly journals Energy Consumption and Usage Reduction in Lecture Halls, Kwame Nkrumah University of Science and Technology

2021 ◽  
Author(s):  
Pius Nimoh ◽  
Daniel Duah ◽  
Alexander Marful
Keyword(s):  
Energy Consumption ◽  
Best Practices ◽  
Energy Use ◽  
Science And Technology ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
High Increase ◽  
Kwame Nkrumah ◽  
World Energy ◽  
Consumption Practices

All over the world energy is used for different purposes and hence its continuous high demand which has brought about an increase in crisis and prices of energy. Ghana has faced a lot of supply and high electricity consumption challenges over a period of time. The Energy Commission of Ghana has developed regulations and guidelines to help reduce high consumption challenges among users, these included the replacement of incandescent bulbs with fluorescent bulbs, ban of importation of low energy efficient appliances. In spite of the effort to reduce electricity wastage, there is still a high increase in electricity consumption. The research investigated what contributed to electricity consumption in Kwame Nkrumah University of Science and Technology with the lecture halls as the main focus, the research also analyzed the current occupant behavior characterized by the electrical energy consumption practices. And investigated how the contemporary theories for reducing energy consumption was used in the lecture halls. A questionnaire survey was conducted to investigate occupants on their energy use practices in lecture halls that causes wastages, observation was made to establish relevant data on the use of contemporary theories for energy reduction in lecture halls. In a total of 110 occupants that responded to the questionnaire, 79 occupants almost always turn off electrical fitting and fixtures when not in use. From the responses, a majority of the occupants claimed to comply to best practices of energy use. The research concluded that some contemporary theories to reduce energy consumptions was not used and considered in the lecture halls.

scholarly journals ANALISIS KONSUMSI ENERGI LISTRIK UNTUK PENCAPAIAN EFISIENSI ENERGI DI KANTOR DEWAN PERWAKILAN RAKYAT DAERAH KABUPATEN TOJO UNA-UNA

Foristek ◽  
2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Duldes S. Lambey ◽  
Nurhani Amin ◽  
Yulius S. Pirade ◽  
Rudi Santoso
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
House Of Representatives ◽  
Air Conditioning ◽  
Energy Use ◽  
Electricity Consumption ◽  
Mineral Resources ◽  
Electrical Energy ◽  
The Republic ◽  
Consumption Intensity

Audit of Electrical Energy at the Regional House of Representatives of the Tojo Una-Una District is a comprehensive method in examining energy use in a building to find the value of Energy Consumption Intensity (IKE) and Energy Saving Opportunities (PHE) that can be obtained to reduce energy waste so that the consumption of electrical energy is more effective and efficient. The audit of Electrical Energy is carried out according to SNI 03-6196-2000 concerning Energy audit procedures in buildings and the Regulation of the Minister of Energy and Mineral Resources of the Republic of Indonesia Number 13 of 2012 concerning Savings Electricity Consumption. The results of the evaluation of the Energy Consumption Intensity Calculation conducted at the Office of the Regional House of Representatives of Tojo Una-Una District known that there are 16 rooms with the criteria for the Energy Consumption Intensity (IKE) value, namely an office building with air conditioning has efficient enough 8 rooms, wasteful 3 rooms and based on office buildings without Air-conditioning is quite efficient in 3 rooms and wasteful in 2 rooms. The results of Energy Saving Opportunities (PHE) that have been identified by using air conditioning and energy-saving lamps, reducing hours of use without reducing the quality of service in the office can save electricity consumption of 2.339,5165 kWh/month or save electricity bill payments of IDR. 3.379.899,60/month.

scholarly journals Investigating Primary Factors Affecting Electricity Consumption in Non-Residential Buildings Using a Data-Driven Approach

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4046 ◽  
Author(s):  
Sooyoun Cho ◽  
Jeehang Lee ◽  
Jumi Baek ◽  
Gi-Seok Kim ◽  
Seung-Bok Leigh
Keyword(s):  
Energy Consumption ◽  
Energy Use ◽  
Simulation Analysis ◽  
Residential Buildings ◽  
Electric Energy ◽  
Electricity Consumption ◽  
Building Energy ◽  
Major Effect ◽  
Measuring Instruments ◽  
Building Energy Consumption

Although the latest energy-efficient buildings use a large number of sensors and measuring instruments to predict consumption more accurately, it is generally not possible to identify which data are the most valuable or key for analysis among the tens of thousands of data points. This study selected the electric energy as a subset of total building energy consumption because it accounts for more than 65% of the total building energy consumption, and identified the variables that contribute to electric energy use. However, this study aimed to confirm data from a building using clustering in machine learning, instead of a calculation method from engineering simulation, to examine the variables that were identified and determine whether these variables had a strong correlation with energy consumption. Three different methods confirmed that the major variables related to electric energy consumption were significant. This research has significance because it was able to identify the factors in electric energy, accounting for more than half of the total building energy consumption, that had a major effect on energy consumption and revealed that these key variables alone, not the default values of many different items in simulation analysis, can ensure the reliable prediction of energy consumption.

scholarly journals The Effect of Energy Consumption on Output: A Panel Data Study of Manufacturing Industries in Egypt

2020 ◽  
Vol 9 (3) ◽  
pp. 490
Author(s):  
Iman Al-Ayouty
Keyword(s):  
Energy Consumption ◽  
Energy Use ◽  
Manufacturing Sector ◽  
Panel Member ◽  
Electrical Energy ◽  
Petroleum Products ◽  
Manufacturing Industries ◽  
Electrical Machinery ◽  
Output Elasticity ◽  
Energy Products

Subsidizing electricity and non-electrical energy products has affected manufacturing output in Egypt, especially given the structure of Egypt’s manufacturing sector which leaning heavily towards capital- and energy-intensive products. This effect is captured in a production function estimated for the twenty industries making up Egypt’s manufacturing sector over the period 2002-2016. With homogeneous parameters, the estimated output elasticity of energy is 0.28. With panel member parameter heterogeneity, the output elasticity of energy is positive and statistically significant in ten manufacturing industries. Negative and statistically significant elasticity is however found in refined petroleum products, fabricated metal products, and electrical machinery and equipment. This indicates suboptimal energy use. Elasticity is also negative, though statistically insignificant, in: textiles, basic metals, and “other manufacturing”. Except for “other manufacturing”, industries of negative elasticity are all energy-intensive.  Moreover, refined petroleum, fabricated metals and basic metals are pollution-intensive. A priority policy measure is to remove subsidies from energy inefficient and polluting industries as opposed to mere ‘across-the-board’ removal. Keywords: energy consumption; manufacturing industries; energy- and pollution intensive; Egypt

Modelling of energy consumption in sociotechnical systems with intelligent equipment

2021 ◽  
pp. 4-19
Author(s):  
Владимир Борисович Барахнин ◽  
Светлана Валентиновна Мальцева ◽  
Константин Владимирович Данилов ◽  
Василий Вячеславович Корнилов
Keyword(s):  
Energy Consumption ◽  
Energy Use ◽  
Electricity Consumption ◽  
Feedback Mechanism ◽  
Smart Devices ◽  
Consumption Function ◽  
Management Processes ◽  
Consumption Data ◽  
The Times ◽  
Dynamic Time

Современные социотехнические системы в различных областях характеризуются наличием в их составе большого количества интеллектуального оборудования, которое может самостоятельно регулировать собственное потребление энергии, а также взаимодействовать с другими потребителями в процессах принятия решений и управления. Одна из таких отраслей - энергетика, где самоорганизация и системы коллективного потребления являются наиболее перспективными с точки зрения обеспечения эффективности использования энергоресурсов. Рассмотрены подходы к установлению статических и динамических тарифов на электроэнергию. Проведено сравнение двух моделей энергопотребления - статического двухтарифного и динамического, учитывающих рациональное поведение умных устройств, способных выбирать лучшие режимы для потребления электроэнергии. Показано влияние количества таких устройств на возможность достижения равномерного потребления при использовании второй модели. Modern socio-technical systems in various fields include a large number of smart equipment that can independently regulate its own energy consumption, as well as interact with other consumers in decision-making and management processes. Energy is one of these areas. Self-organization and collective self-consumption are the most promising in terms of ensuring the efficiency of energy use. Existing and prospective approaches to using static and dynamic time-based tariffs are under consideration. The paper presents a mathematical description of two models of energy consumption: a static model based on the allocation of two zones with a fixed duration and tariffs for each one and a dynamic model of two-tariff accounting with feedback, which assumes tariffs changing based on the results of the analysis of current electricity consumption. A pilot study of both models was conducted by using energy consumption data and taking into account the rational behavior of smart devices as consumers who can choose the best periods for electricity consumption. During the experiments it was investigated how an increase in the share of smart devices in the composition of electricity consumers as well as options for establishing zones and tariffs, affect the possibility of achieving uniform consumption during the day. Experiments have shown that with a small proportion of smart devices, acceptable results that reduce the variation in the consumption function can favor usage of the model without feedback. An increase in the number of actors in the system inevitably requires including a feedback mechanism into the system that allows the resource supplier to prevent excessive concentration of smart devices during the period of the cheaper tariff. However, when the share of smart devices exceeds a certain critical value, a pronounced inversion of the times of cheap and expensive tariffs occurs in two successive iterations. In this case, in order to ensure a quite even distribution of electricity consumption, it is advisable for the supplier to return to the single tariff rate. Thus, an excessive increase in the number of actors in the system can neutralize the effect of their use

Energy and Economic Analysis for Greenhouse Envelope Design

2018 ◽  
Vol 61 (6) ◽  
pp. 1795-1810
Author(s):  
James Bambara ◽  
Andreas K. Athienitis
Keyword(s):  
Life Cycle ◽  
Energy Consumption ◽  
Economic Analysis ◽  
Life Cycle Cost ◽  
Energy Use ◽  
Electricity Consumption ◽  
Base Case ◽  
Local Climate ◽  
The North ◽  
North Wall

Abstract. The energy consumption of a building is significantly impacted by its envelope design, particularly for greenhouses where coverings typically provide high heat and daylight transmission. Energy and life cycle cost (LCC) analysis were used to identify the most cost-effective cladding design for a greenhouse located in Ottawa, Ontario, Canada (45.4° N) that employs supplemental lighting. The base case envelope design uses single glazing, whereas the two alternative designs consist of replacing the glass with twin-wall polycarbonate and adding foil-faced rigid insulation (permanent or movable) on the interior surface of the glass. All the alternative envelope designs increased electricity consumption for lighting and decreased heating energy use except when permanent or movable insulation was applied to the north wall and in the case of permanent insulation on the north wall plus polycarbonate on the east wall. This demonstrates how the use of reflective opaque insulation on the north wall can be beneficial for redirecting light onto the crops to achieve simultaneous reductions in electricity and heating energy costs. A maximum reduction in LCC of 5.5% (net savings of approximately $130,000) was achieved when permanent insulation was applied to the north and east walls plus polycarbonate on the west wall. This alternative envelope design increased electricity consumption for horticultural lighting by 4.3%, reduced heating energy use by 15.6%, and caused greenhouse gas emissions related to energy consumption to decrease by 14.7%. This analysis demonstrates how energy and economic analysis can be employed to determine the most suitable envelope design based on local climate and economic conditions. Keywords: Artificial lighting, Consistent daily light integral, Energy modeling, Envelope design, Greenhouse, Life cycle cost analysis, Light emitting diode, Local agriculture.

scholarly journals Sympathy for the environment predicts green consumerism but not more important environmental behaviours related to domestic energy use

2016 ◽  
Vol 43 (2) ◽  
pp. 140-147 ◽  
Author(s):  
XIAODONG CHEN ◽  
JENNIFER DE LA ROSA ◽  
M. NILS PETERSON ◽  
YING ZHONG ◽  
CHUNTIAN LU
Keyword(s):  
Energy Consumption ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Use ◽  
Environmental Attitudes ◽  
Electricity Consumption ◽  
Structural Constraints ◽  
Household Energy ◽  
Green Consumerism ◽  
Domestic Energy

SUMMARYHousehold consumption is a major contributor to global greenhouse gas emissions. Some behaviours (for example energy use and vehicle use) may have far larger impacts than others (for example green consumerism of household products). Here, the driving forces of green consumerism and two domestic energy uses (electricity consumption and vehicle fuel use) are compared. This study found that environmental attitudes predicted green consumerism, but not electricity consumption or vehicle fuel use. Furthermore, green consumerism was correlated with income and individual level demographic factors, while energy consumption was primarily predicted by household size and structural constraints. Because household energy consumption has greater environmental impacts than green consumerism, policies that aim to improve pro-environmental attitudes may not be effective in mitigating greenhouse gas emissions. Policies should rather aim to change structural constraints influencing transportation and household energy decisions and improve the conspicuousness of household energy consumption.

A methodology to estimate baseline energy use and quantify savings in electrical energy consumption in higher education institution buildings: Case study, Federal University of Itajubá (UNIFEI)

2020 ◽  
Vol 244 ◽  
pp. 118551 ◽  
Author(s):  
Eric Alberto Ocampo Batlle ◽  
José Carlos Escobar Palacio ◽  
Electo Eduardo Silva Lora ◽  
Arnaldo Martín Martínez Reyes ◽  
Maurish Melian Moreno ◽  
...  
Keyword(s):  
Higher Education ◽  
Energy Consumption ◽  
Energy Use ◽  
Education Institution ◽  
Electrical Energy ◽  
Electrical Energy Consumption ◽  
Higher Education Institution

Energy Consumption, Carbon Emission, and Well-Being in Africa

2020 ◽  
Vol 47 (3) ◽  
pp. 295-318
Author(s):  
Ebenezer Adesoji Olubiyi
Keyword(s):  
Energy Consumption ◽  
Mortality Rate ◽  
Infant Mortality ◽  
Carbon Emission ◽  
Energy Use ◽  
Electricity Consumption ◽  
Well Being ◽  
Infant Mortality Rate ◽  
Coal Consumption ◽  
Human Welfare

The link among energy use, human welfare, and carbon emission has been a topical issue in the literature. In Africa, energy consumption has been on the increase owing to the production and consumption of sophisticated consumer goods and home appliances. Increased energy use triggers carbon emission that is detrimental to human welfare. This study investigates this puzzle in emerging African countries by utilizing panel vector autoregressive and system generalized method of moments (SYS-GMM) in the context of a mix of theories. The results indicate a unidirectional causality running from FUEL, COAL to per capita income (PCI). A unidirectional causality running from mortality rate (MOR) to COAL and CO2 was observed. There is a bidirectional relationship between MOR and energy use. The SYS-GMM results show that the effects of energy consumption on well-being are diverse. Increase in coal consumption reduces unemployment rate while electricity consumption reduces infant mortality rate. Fuel consumption aggravates incidence of mortality rate. CO2 reduces unemployment but worsens infant mortality rate. Electricity consumption reduces infant mortality rate. Hence, for the purpose of policy harmonization tailored toward improving well-being in the emerging economies of Africa, it is recommended that more of coal consumption and efficient use of electricity must be encouraged.

scholarly journals Comparative Analysis of Two Urban Microclimates: Energy Consumption and Greenhouse Gas Emissions

2019 ◽  
Vol 11 (7) ◽  
pp. 2045 ◽  
Author(s):  
Néstor Santillán-Soto ◽  
O. García-Cueto ◽  
Alejandro Lambert-Arista ◽  
Sara Ojeda-Benítez ◽  
Samantha Cruz-Sotelo
Keyword(s):  
Energy Consumption ◽  
Air Conditioning ◽  
Scientific Evidence ◽  
Electricity Consumption ◽  
Electrical Energy ◽  
Air Conditioner ◽  
Comparative Performance ◽  
Urban Complex ◽  
Arid Desert ◽  
Urban Microclimates

This paper presents a hypothetical and comparative performance of a 5 ton air conditioner (AC) operating in two zones in different urban microclimates for 25 days. One site represents a type of homogeneous planned urbanism and the other is a traditional heterogeneous zone. Air temperature data was collected and then processed using a linear regression model included in the operating manual of the AC in order to obtain their energy consumption. Results indicate that for an area with 500 homes, a traditional urban complex requires 12,350 kWh of electrical energy more than a planned zone (1.89%). This extra energy amounts up to $1180 and adds 9191 kg of CO2 to the atmosphere. The increased energy consumption has implications that increase the cost and environmental aspects of two urban microclimates, so that urbanization without planning is less friendly to the environment. In this sense, this study highlights the effects of urban microclimates on domestic electricity consumption from air conditioning. In addition, for a city with an arid desert climate, the variation in electricity consumption is associated with changes in the urban mosaic. The results found represent scientific evidence that can be used as a reference to establish public policies that could be incorporated into the local construction regulations, oriented to reduce the energy consumption associated with the use of air conditioning equipment.

Intrinsic Changes: Energy Saving Behaviour Among Resident University Students

2010 ◽  
Vol 26 ◽  
pp. 85-99 ◽  
Author(s):  
Rosemary Black ◽  
Penny Davidson ◽  
Karen Retra
Keyword(s):  
Energy Consumption ◽  
University Students ◽  
Energy Saving ◽  
Energy Use ◽  
Electricity Consumption ◽  
Self Report ◽  
Control Group ◽  
Report Data ◽  
On Line ◽  
Self Report Data

AbstractThis paper presents the results of a study that explored the effectiveness of three intervention strategies in facilitating energy saving behaviour among resident undergraduate university students. In contrast to a dominant practice of motivating with rewards or competition this study sought to appeal to students' intrinsic motivations. An experimental design was used with two intervention groups and a control group. The interventions were the provision of real-time feedback provided by an inhouse energy consumption display unit (ecoMeter) and a targeted social marketing approach. They were evaluated using energy consumption data and self-report data from the participants via an on-line survey and focus groups. Across the three research phases the rate of reduced electricity consumption for the interventions ranged from an average of 17% to 28% less than the control group. The findings provide evidence that facilitation of intrinsically motivated behaviours can result in reduced energy use and greenhouse gas emissions.

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