scholarly journals Study Results and Achieving High Ventilation Air Quality in Architecture for a Public Utility Building – Shopping Centre in Mielec, Poland

2021 ◽  
Vol 1203 (3) ◽  
pp. 032139
Author(s):  
Jan Wrana ◽  
Wojciech Struzik
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
State Of The Art ◽  
Primary Energy ◽  
Public Utility ◽  
Environment Friendly ◽  
Shopping Centre ◽  
Novel Technology ◽  
Study Results

Abstract The purpose of the current study is to utilise a novel technology that is expected to bring reductions in electrical and heat energy consumption and cut CO2 emissions in the shopping centre public utility building in Mielec. The building is equipped with systems for obtaining heat and cold from groundwater and features the energy consumption level of a passive building with the lowest primary energy ratio (PER) in Poland. This state-of-the-art, innovative, energy-efficient and environment-friendly FCH system with BMS control was subjected to numerous tests and analyses, the details of which will be presented further in this paper. The design assumptions were confirmed and all work parameters were recorded for the system under extreme conditions, including the determination of final energy (FE) and primary energy (PE).

scholarly journals Study Results and Obtaining High Ventilation Air Quality in Architecture for an Old Shopping Centre Public Utility Building with Modernised EL. Heating in Warsaw, District, Poland

2021 ◽  
Vol 1203 (3) ◽  
pp. 032140
Author(s):  
Jan Wrana ◽  
Wojciech Struzik
Keyword(s):  
Energy Consumption ◽  
Air Quality ◽  
District Heating ◽  
Electrical Energy ◽  
Heating System ◽  
Public Utility ◽  
Operating Costs ◽  
Electrical Heating ◽  
Shopping Centre ◽  
Study Results

Abstract The subject of this paper is the study of a public utility building, a shopping centre in Warsaw/Targówek, carried out as part of the programme of “Research for obtaining high air quality in architecture. The purpose of the study of the building is to utilise a new technology which will lead to reductions in electrical and heat energy consumption and cuts in CO2 emissions in the modernised Shopping Centre Public Utility Building in Warsaw. The building is equipped with systems for obtaining heat and cold from groundwater and is adapted to a low electrical energy consumption level with the lowest primary energy ratio in Poland. It is located in Warsaw and, in addition to the energy sourcing system, features a highly modern control system (BMS). The objective of the study is to demonstrate operating costs for a building with low exterior wall and roof insulation parameters. In addition, the building uses a heating system based solely on electrical heating due to its lack of access to gas and district heating. The conducted studies and analyses allowed a comparison of the operating costs of old buildings following modernisation with those of new buildings.

scholarly journals Assessment Methodology for Efficiency, CO2-Emissions and Primary Energy Consumption for Refrigeration Technologies in the Industry

2018 ◽  
Vol 882 ◽  
pp. 215-220
Author(s):  
Matthias Koppmann ◽  
Raphael Lechner ◽  
Tom Goßner ◽  
Markus Brautsch
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Air Conditioning ◽  
Primary Energy ◽  
Primary Energy Consumption ◽  
Assessment Methodology ◽  
Alternative Technologies ◽  
Overall Efficiency ◽  
Chp System ◽  
The Individual

Process cooling and air conditioning are becoming increasingly important in the industry. Refrigeration is still mostly accomplished with compression chillers, although alternative technologies are available on the market that can be more efficient for specific applications. Within the scope of the project “EffiCool” a technology toolbox is currently being developed, which is intended to assist industrials users in selecting energy efficient and eco-friendly cooling solutions. In order to assess different refrigeration options a consistent methodology was developed. The refrigeration technologies are assessed regarding their efficiency, CO2-emissions and primary energy consumption. For CCHP systems an exergetic allocation method was implemented. Two scenarios with A) a compression chiller and B) an absorption chiller coupled to a natural gas CHP system were calculated exemplarily, showing a greater overall efficiency for the CCHP system, although the individual COP of the chiller is considerably lower.

scholarly journals Spin Wave Based Approximate 4:2 Compressor

2021 ◽  
Author(s):  
Abdulqader Mahmoud ◽  
Frederic Vanderveken ◽  
Florin Ciubotaru ◽  
Christoph Adelmann ◽  
Said Hamdioui ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Error Rate ◽  
Energy Efficient ◽  
Directional Coupler ◽  
State Of The Art ◽  
The Other ◽  
Average Error ◽  
Majority Gate ◽  
Micromagnetic Simulations ◽  
Average Error Rate

In this paper, we propose an energy efficient SW based approximate 4:2 compressor comprising a 3-input and a 5-input Majority gate. We validate our proposal by means of micromagnetic simulations, and assess and compare its performance with one of the state-of-the-art SW, 45nm CMOS, and Spin-CMOS counterparts. The evaluation results indicate that the proposed compressor consumes 31.5\% less energy in comparison with its accurate SW design version. Furthermore, it has the same energy consumption and error rate as the approximate compressor with Directional Coupler (DC), but it exhibits 3x lower delay. In addition, it consumes 14% less energy, while having 17% lower average error rate than the approximate 45nm CMOS counterpart. When compared with the other emerging technologies, the proposed compressor outperforms approximate Spin-CMOS based compressor by 3 orders of magnitude in term of energy consumption while providing the same error rate. Finally, the proposed compressor requires the smallest chip real-estate measured in terms of devices.

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.

scholarly journals Predicting Primary Energy Consumption Using Hybrid ARIMA and GA-SVR Based on EEMD Decomposition

Mathematics ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1722
Author(s):  
Yu-Sheng Kao ◽  
Kazumitsu Nawata ◽  
Chi-Yo Huang
Keyword(s):  
Energy Consumption ◽  
Empirical Study ◽  
Moving Average ◽  
Primary Energy ◽  
Ensemble Empirical Mode Decomposition ◽  
Support Vector ◽  
Primary Energy Consumption ◽  
Mode Decomposition ◽  
Study Results ◽  
Hybrid Forecasting

Forecasting energy consumption is not easy because of the nonlinear nature of the time series for energy consumptions, which cannot be accurately predicted by traditional forecasting methods. Therefore, a novel hybrid forecasting framework based on the ensemble empirical mode decomposition (EEMD) approach and a combination of individual forecasting models is proposed. The hybrid models include the autoregressive integrated moving average (ARIMA), the support vector regression (SVR), and the genetic algorithm (GA). The integrated framework, the so-called EEMD-ARIMA-GA-SVR, will be used to predict the primary energy consumption of an economy. An empirical study case based on the Taiwanese consumption of energy will be used to verify the feasibility of the proposed forecast framework. According to the empirical study results, the proposed hybrid framework is feasible. Compared with prediction results derived from other forecasting mechanisms, the proposed framework demonstrates better precisions, but such a hybrid system can also be seen as a basis for energy management and policy definition.

scholarly journals Energy considerations of social dwellings in Colombia accotding to NZEB concept

DYNA ◽  
2015 ◽  
Vol 82 (192) ◽  
pp. 120-130 ◽  
Author(s):  
Germán Alfonso Osma Pinto ◽  
David Andrés Sarmiento Nova ◽  
Nelly Catherine Barbosa Calderón ◽  
Gabriel Ordóñez Plata
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
High Energy ◽  
Primary Energy ◽  
Electrical Performance ◽  
Tropical Regions ◽  
Energy Concept ◽  
Long Run ◽  
Level Of Use ◽  
Energy Grid

<p class="Default">In this paper, the characteristics and definitions of NZEBs are studied. In particular, the methods for calculating balance for each concept and methodology are analyzed in this work, taking into account the interaction of the NZEB with the energy grid, the emissions produced per energy consumption and the introduction of the primary energy concept as an indicator of balance. High-energy-efficient appliances are of main interest in this paper due to the importance and level of use in tropical regions. It is described how these appliances can reduce the energy consumption and its impact in the electrical performance being a benefit significant in Colombia, if it could be applied massively in projects related to <em>Viviendas de Interés Social </em>–VIS (social dwellings) in the long run.</p>

scholarly journals Determination of the Energy Performance of a Solar Low Energy House with Regard to Aspects of Energy Efficiency and Smartness of the House

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3232
Author(s):  
Dorota Chwieduk ◽  
Michał Chwieduk
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Solar Energy ◽  
Residential Buildings ◽  
Energy Performance ◽  
Primary Energy ◽  
Hot Water ◽  
Low Energy ◽  
Primary Energy Consumption

The paper shows how difficult it is to prove technically that a building really is both low energy and smart, and that all aspects of energy efficiency have been treated equally. Regulations connected to the determination of the energy performance of residential buildings take into account only space and hot water heating energy consumption and define the indices of maximal primary energy consumption, but not energy needs based on the architecture of the building. A single family house designed and constructed as a low energy solar house in Warsaw’s suburbs is considered. Availability of solar energy and its influence on the architecture of the house is analyzed. A specific solar passive architectural concept with solar southern and cold northern buffer spaces incorporated into the interior of the house is presented. Parameters of the building’s structure, construction materials, as well as operation parameters of equipment and heating systems based on active use of solar energy, ground energy (via a heat pump) and waste heat from a ventilation system are described. Results of calculations give values of final and primary energy consumption index levels of 11.58 kWh/m2 and 25.77 kWh/m2, respectively. However, the official methodology for determination of energy performance does not allow for presenting how energy efficient and smart the building really is.

scholarly journals Spin Wave Based Approximate 4:2 Compressor

2021 ◽  
Author(s):  
Abdulqader Mahmoud ◽  
Frederic Vanderveken ◽  
Florin Ciubotaru ◽  
Christoph Adelmann ◽  
Said Hamdioui ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Error Rate ◽  
Energy Efficient ◽  
Directional Coupler ◽  
State Of The Art ◽  
The Other ◽  
Average Error ◽  
Majority Gate ◽  
Micromagnetic Simulations ◽  
Average Error Rate

In this paper, we propose an energy efficient SW based approximate 4:2 compressor comprising a 3-input and a 5-input Majority gate. We validate our proposal by means of micromagnetic simulations, and assess and compare its performance with one of the state-of-the-art SW, 45nm CMOS, and Spin-CMOS counterparts. The evaluation results indicate that the proposed compressor consumes 31.5\% less energy in comparison with its accurate SW design version. Furthermore, it has the same energy consumption and error rate as the approximate compressor with Directional Coupler (DC), but it exhibits 3x lower delay. In addition, it consumes 14% less energy, while having 17% lower average error rate than the approximate 45nm CMOS counterpart. When compared with the other emerging technologies, the proposed compressor outperforms approximate Spin-CMOS based compressor by 3 orders of magnitude in term of energy consumption while providing the same error rate. Finally, the proposed compressor requires the smallest chip real-estate measured in terms of devices.

scholarly journals APPLICATION OF THE ULTRASONIC GENERATOR IN THE EXTRACTOR AND DETERMINATION OF ITS ENERGY CONSUMPTION

2020 ◽  
Vol 2021 (1) ◽  
pp. 55-62
Author(s):  
Shaxnoza Sultanova ◽  
◽  
Jasur Safarov ◽  
Azamat Usenov ◽  
Doston Samandarov
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
High Performance ◽  
Extraction Process ◽  
Flow Time ◽  
Volume Curve ◽  
Complete Extraction ◽  
Time Required ◽  
Solvent Flow

An ultrasonic generator was used in the Soxhlet extractor. To evaluate the process, the solvent flow was examined. The influence of the flow time in the Soxhlet on the process was analyzed. The formula for the residence time of streaming particles in the apparatus is given. A standardized volume curve V was formed. The time required for the solvent to remain in the apparatus is important during the extraction process. The description of the structure of flows of mass metabolic processes also means that it allows you to determine the movement and distribution of substances in these flows. Therefore, we wrote a hydrodynamic model of flows in the Soxhlet in the form of equations that represent the change in time in the apparatus. Ways to accelerate the extraction process are considered. The advantages of each method have been explored. Ultrasonic acceleration was selected from the investigated method. The parameters of the generator for generating ultrasound are considered. A compatible generator was selected. Selected “High Power Ultrosonic Generator” 40 kHz, 1.2 kW because it uses less power and does not affect the balance of the device. If a generator with high parameters is selected, the effect on the balance of the device is determined. For large extractors, a high-performance ultrasonic generator is recommended. The schematic diagram of the selected generator is taken from the reference book. We have performed a complete extraction process to estimate the energy consumption of the process. It turned out that the process, carried out with the help of ultrasound, is fast and energy efficient. The experiments took over an hour to evaluate the process. While 10 ml of the substance was extracted from the extracted basil leaf for one hour, 15 ml of the substance was separated from the addition process by sonication for one hour. In each experiment, the mode was chosen the same. Graphs were drawn to compare the results.

An Energy Efficient Fast and Secure Data Aggregation Scheme for Wireless Sensor Network

2017 ◽  
Vol 14 (1) ◽  
pp. 780-788
Author(s):  
K Ramanan ◽  
E Baburaj
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Wireless Sensor Network ◽  
Data Collection ◽  
Energy Conservation ◽  
Steiner Tree ◽  
Energy Efficient ◽  
State Of The Art ◽  
Wireless Sensor ◽  
Art Works

Energy efficiency and secured data collection are two important performance metrics for critical event monitoring in wireless sensor network. Current state-of-the-art research is limited to either maximizing security under redundant radix-based approach or security through adversary model while satisfying throughput requirement. Although many prior research efforts resulted in optimized solutions, but how to optimize both objectives simultaneously has to be addressed. In this paper, an integrated framework called Secured Marvin and Adaptive Derivative Scheduler (SM-ADS) is presented to improve the fastness of data collection of sensed data event in the sink. To focus on secure data collection of sensed data events, the encryption and decryption of sensor data is simplified using Marvin Message Authentication Codes. We show that the solution to the integrated framework problem characterizes the secured energy efficient data collection through XOR ing operations. Next, an Adaptive Derivative Scheduler based on Steiner Tree is presented with the objective of reducing the energy consumption of sensed data collection at the sink. By applying the Steiner tree, minimum hops between source and sink nodes are identified satisfying the energy conservation principal. An extensive simulation analysis to demonstrate the security aspect and energy conservation principal with time taken for data collection is presented. The obtained results show that SM-ADS provide comparatively better performance than the state-of-the-art works in terms of both security and energy efficiency. Experimental analysis shows that SM-ADS is able to reduce the time for data collection by 25.72% and energy consumption by 18.48% compared to the state-of-the-art works.

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