scholarly journals DOES DIGITALIZATION REDUCE ELECTRICITY CONSUMPTION? EVIDENCE FROM SPATIAL ANALYSIS

2021 ◽  
Vol 11 (2) ◽  
pp. 413-419
Author(s):  
Natalia Larionova ◽  
Julia Varlamova ◽  
Julia Kolesnikova
Keyword(s):  
Spatial Analysis ◽  
Electricity Consumption ◽  
Reduce Electricity Consumption

scholarly journals Heat pump systems: A mini review

2021 ◽  
Vol 4 (2) ◽  
pp. 73-81
Author(s):  
Mohammad Omar Temori ◽  
František Vranay
Keyword(s):  
Heat Pump ◽  
Electricity Consumption ◽  
Cost Savings ◽  
Electrical Energy ◽  
Primary Energy ◽  
Heat Pumps ◽  
Coefficient Of Performance ◽  
Heating And Cooling ◽  
Ground Source ◽  
Reduce Electricity Consumption

In this work, a mini review of heat pumps is presented. The work is intended to introduce a technology that can be used to income energy from the natural environment and thus reduce electricity consumption for heating and cooling. A heat pump is a mechanical device that transfers heat from one environmental compartment to another, typically against a temperature gradient (i.e. from cool to hot). In order to do this, an energy input is required: this may be mechanical, electrical or thermal energy. In most modern heat pumps, electrical energy powers a compressor, which drives a compression - expansion cycle of refrigerant fluid between two heat exchanges: a cold evaporator and a warm condenser. The efficiency or coefficient of performance (COP), of a heat pump is defined as the thermal output divided by the primary energy (electricity) input. The COP decreases as the temperature difference between the cool heat source and the warm heat sink increases. An efficient ground source heat pump (GSHP) may achieve a COP of around 4. Heat pumps are ideal for exploiting low-temperature environmental heat sources: the air, surface waters or the ground. They can deliver significant environmental (CO2) and cost savings.

scholarly journals Dynamic Autonomous Identification and Intelligent Lighting of Moving Objects with Discomfort Glare Limitation

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7243
Author(s):  
Sebastian Słomiński ◽  
Magdalena Sobaszek
Keyword(s):  
Moving Objects ◽  
Tracking System ◽  
Electricity Consumption ◽  
Computation Time ◽  
Projection Image ◽  
Reduce Electricity Consumption ◽  
Smart Control ◽  
Discomfort Glare ◽  
Lighting Systems ◽  
Dynamic Lighting

The importance of reducing discomfort glare during the dynamic development of high luminance LEDs is growing fast. Smart control systems also offer great opportunities to reduce electricity consumption for lighting purposes. Currently, dynamic “intelligent” lighting systems are a rapidly developing field. These systems, consisting of cameras and lighting units, such as moving heads or multimedia projectors, are powerful tools that provide a lot of opportunities. The aim of this research is to demonstrate the possibilities of using the projection light in dynamic lighting systems that enable the reduction of discomfort glare and the light pollution phenomenon. The proposed system allows darkening or reducing the luminance of some sensitive zones, such as the eyes or the head, in real-time. This paper explores the development of the markerless object tracking system. The precise identification of the position and geometry of objects and the human figure is used for dynamic lighting and mapping with any graphic content. Time measurements for downloading the depth maps, as well as for identifying the human body’s position and pose, have been performed. The analyses of the image transformation times have been carried out in relation to the resolution of the images displayed by the projector. The total computation time related to object detection and image display translates directly into the precision of fitting the projection image to a moving object and has been shown.

Reducing Dependence on Central Electric Heating Systems: An Evaluation of an Experimental Program

1987 ◽  
Vol 11 (3) ◽  
pp. 327-336
Author(s):  
Richard S. Ridge ◽  
Ronald K. Watts
Keyword(s):  
Electricity Consumption ◽  
Electric Heating ◽  
Analysis Of Covariance ◽  
Experimental Program ◽  
Electric Heater ◽  
Control Group ◽  
Control Group Design ◽  
Utility Company ◽  
Reduce Electricity Consumption ◽  
Electric Heat

In 1983 a major utility company conducted an experimental program that placed a portable electric heater into each of 140 households with central electric heat. A pretest-posttest control group design was used to determine whether the use of a single portable electric heater could significantly reduce electricity consumption. Analysis of covariance was employed using the 1982 winter kWh consumption and square footage of the home as covariates. The results indicate that the treatment group had an average monthly kWh consumption for the 1983 winter that was 108 kWh lower than the control group.

scholarly journals Optimization to water supply system design and operation scheme in high rise buildings

2018 ◽  
Vol 12 (3) ◽  
pp. 123-131
Author(s):  
Nguyen Lan Huong ◽  
Nguyen Viet Anh ◽  
Dang Thi Thanh Huyen ◽  
Tran Hoai Son ◽  
Dinh Viet Cuong
Keyword(s):  
Water Supply ◽  
Urban Areas ◽  
Greenhouse Gas Emission ◽  
Electricity Consumption ◽  
Structural System ◽  
Electrical System ◽  
Pump System ◽  
High Rise ◽  
Reduce Electricity Consumption ◽  
Scale Experiment

Greenhouse Gas emission from high-rise buildings has been increasing mainly due to excessive energy consumption of the HVAC system, structural system and electrical system. Electricity consumption for pump system accounts for 15% of total electricity usage in building. Therefore the reduction of electricity in operation is crucial to the overall reduction of GHGs in urban areas. In this study, a lab-scale experiment was conducted to test the electricity consumption in applying different design approaches; the energy efficiency of the system was calculated. Finally, this study proposes the advanced water supply design scheme to reduce electricity consumption of the pump system. Article history: Received 12 March 2018, Revised 03 April 2018, Accepted 27 April 2018

scholarly journals Functioning Efficiency of the Central Air-Conditioning System on the Selected Example

2020 ◽  
Vol 3 (1) ◽  
pp. 41-55
Author(s):  
Nikodem Szlązak ◽  
Justyna Swolkień
Keyword(s):  
Air Conditioning ◽  
Cooling Water ◽  
Electricity Consumption ◽  
Cooling Capacity ◽  
Total Power ◽  
Hard Coal ◽  
Cooling Power ◽  
Airflow Rate ◽  
Air Temperatures ◽  
Reduce Electricity Consumption

AbstractOne of the particularly significant threats during exploitation is the climatic threat, which is associated with an increase in the overall costs that are allocated to combating it. The rise in the virgin temperature of the rock mass by 1oC increases the demand for the required cooling capacity to be taken from the air. The publication assesses the effectiveness of the air-conditioning installation by testing its operation on a selected example. The assessment of the efficiency of the air-conditioning installation for a selected hard coal mine showed that none of the five tested coolers achieved the maximum assumed rated power. The use of total power (7.5 MW) in mining excavations was less than 50% and amounted to η = 0.472%. The research showed that the main reason for obtaining low cooling parameters is the inability to locate them in the place of the highest air temperatures. The other problem is an insufficient airflow rate of cooling water supplied to the coolers at too high temperature. The above considerations indicated that the cooling power from built-in air- conditioning systems is not properly and effectively used. Improving the efficiency of its functioning is possible by proceeding research that will eliminate the above factors and by using air conditioning equipment, taking into account the periodic audit of their work to reduce electricity consumption.

scholarly journals Solar hybrid air conditioning system to use in Iraq to save energy

2019 ◽  
Vol 124 ◽  
pp. 01024
Author(s):  
Y. V. Vankov ◽  
A. K. Al–Okbi ◽  
M. H. Hasanen
Keyword(s):  
Air Conditioning ◽  
Power Plants ◽  
Cooling System ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Air Conditioners ◽  
Reduce Electricity Consumption ◽  
Central Air Conditioning ◽  
Save Energy ◽  
Air Conditioning Systems

The energy saving issues are becoming necessary worldwide, as excessive consumption of energy leads to the consumption of a larger amount of fuel, increases environmental pollution and negatively affects the ozone layer. In Iraq, in particular, the demand for central air conditioning systems and home air conditioners with high electrical capacity has become increasingly clear in the recent years. Air conditioning systems within residential and public buildings, as well as government facilities became a necessity for good internal comfort, which was driven by desertification, high temperature, air pollution and increased population, resulting in increased consumption of electric power and pressing of power plants. Aiming at usage of renewable energy sources, the proposed system uses solar collectors as auxiliary solar thermal compressors and integrate them with air conditioning systems. The proposed solution will increase the cooling system efficiency, reduce electricity consumption and pollution.

Unleashing analytics to reduce electricity consumption using incremental clustering algorithm

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Archana Yashodip Chaudhari ◽  
Preeti Mulay
Keyword(s):  
Real Time ◽  
Clustering Algorithm ◽  
Electricity Consumption ◽  
Incremental Clustering ◽  
Science Data ◽  
Load Curve ◽  
Data Set ◽  
Content Type ◽  
Validity Indices ◽  
Reduce Electricity Consumption

Purpose To reduce the electricity consumption in our homes, a first step is to make the user aware of it. Reading a meter once in a month is not enough, instead, it requires real-time meter reading. Smart electricity meter (SEM) is capable of providing a quick and exact meter reading in real-time at regular time intervals. SEM generates a considerable amount of household electricity consumption data in an incremental manner. However, such data has embedded load patterns and hidden information to extract and learn consumer behavior. The extracted load patterns from data clustering should be updated because consumer behaviors may be changed over time. The purpose of this study is to update the new clustering results based on the old data rather than to re-cluster all of the data from scratch. Design/methodology/approach This paper proposes an incremental clustering with nearness factor (ICNF) algorithm to update load patterns without overall daily load curve clustering. Findings Extensive experiments are implemented on real-world SEM data of Irish Social Science Data Archive (Ireland) data set. The results are evaluated by both accuracy measures and clustering validity indices, which indicate that proposed method is useful for using the enormous amount of smart meter data to understand customers’ electricity consumption behaviors. Originality/value ICNF can provide an efficient response for electricity consumption patterns analysis to end consumers via SEMs.

scholarly journals Efficiency Analysis of Fractional KiloWatt Reluctance Motors with Various Frame Sizes, Taking into Account the Impact of the Punching Process

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 357 ◽  
Author(s):  
Zbigniew Gmyrek ◽  
Krzysztof Smółka
Keyword(s):  
Electricity Consumption ◽  
Operational Parameters ◽  
Stator Windings ◽  
Damaged Material ◽  
Material Part ◽  
Electrical Devices ◽  
Reduce Electricity Consumption ◽  
Negative Effect ◽  
Punching Process ◽  
The Impact

The need to reduce electricity consumption by electrical devices, including electric motors, is the reason for the development of new designs. Designers strive to improve operational parameters, including efficiency, using, for example, new types of magnetic materials, new types of stator windings, etc. Currently, in mass production, motor cores are made of punched laminations—punching causes damage of core parts. For motors of relatively large geometrical sizes, this effect is ignored during design. For motors having small dimensions, this negative effect results in a reduction in efficiency, which is mostly small for this type of motor. In this paper, the authors propose a new rapid algorithm based on simple measurements to determine the material characteristics of the damaged material part. Then, using them in the FEM models, they determine the efficiency of motors with various powers and frame sizes. On this basis, the conclusions are formulated, they may be helpful for motor designers.

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