scholarly journals Web-based smart LED for saving energy consumption

2021 ◽  
Vol 1882 (1) ◽  
pp. 012135
Author(s):  
F Al-Maghribi ◽  
I Al Fayyedh ◽  
K A Hernandi ◽  
R Nugraha ◽  
Estananto ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Saving Energy ◽  
Web Based

Sistem Informasi Penjualan Barang Berbasis Web Pada Percetakan Rahayu Bekasi

2018 ◽  
Vol 6 (1) ◽  
pp. 61-74
Author(s):  
Umi Salamah ◽  
Herlawati Herlawati
Keyword(s):  
Information Systems ◽  
Cost Saving ◽  
Saving Energy ◽  
Web Based ◽  
Online Sales

Abstract Rahayu Printing is a business entity that provides merchandising services such as wedding invitations, circumcision invitations, business cards, notes, letterhead, yasin and others. Based on sales that have been achieved so far, Rahayu Printing felt not satisfied with the results obtained and trying to increase sales and service through online sales system. Sales that go so far encounter obstacles in the process of marketing from consumers to consumers, the sale of goods still use a system of sales in the form of book-shaped catalogs, very tight competition, locations adjacent to other printing, and constraints from distance and time to obtain information on shopping in printing . It makes the sale less cost saving, energy and time because the system used still manually. The method used in the design of information systems sales of goods is waterfall method. From the manufacture of web-based goods sales system, is expected to solve the existing constraints, simplify, accelerate the sales system and hopefully can increase profits on the sale of goods Rahayu Bekasi Printing.   Keywords: Goods, Information, Sales, Printing, Waterfall.                                                                   Abstrak                                                                  Percetakan Rahayu merupakan sebuah badan usaha yang menyediakan jasa penjualan barang seperti undangan pernikahan, undangan khitanan, kartu nama, nota, kop surat, yasin dan lain-lain. Berdasarkan hasil penjualan yang telah dicapai selama ini, Percetakan Rahayu merasa belum puas dengan hasil yang didapat dan berupaya ingin meningkatkan penjualan serta pelayanan melalui sistem penjualan secara online. Penjualan yang berlangsung selama ini menemui kendala dalam proses pemasaran dari konsumen ke konsumen, penjualan barang masih menggunakan sistem penjualan berupa katalog berbentuk buku, persaingan yang sangat ketat, lokasi yang berdekatan dengan percetakan lainnya, serta kendala dari jarak dan waktu untuk mendapatkan informasi belanja di percetakan. Hal tersebut membuat penjualan kurang menghemat biaya, tenaga dan waktu karena sistem yang digunakan masih secara manual. Metode yang digunakan pada perancangan sistem informasi penjualan barang tersebut adalah metode waterfall. Dari pembuatan sistem penjualan barang berbasis web, diharapkan dapat memecahkan kendala yang ada, mempermudah, mempercepat sistem penjualan dan semoga dapat meningkatkan keuntungan penjualan barang pada Percetakan Rahayu Bekasi.   Kata kunci: Barang, Informasi, Penjualan, Percetakan, Waterfall.

Centrifugal Gas Compressors Energy Optimization Initiatives: A Way to Save Valuable Energy at Upstream Operation

2020 ◽  
Author(s):  
Mohammed Abdo Alwani ◽  
Mohammed Ahmad Soliman
Keyword(s):  
Energy Consumption ◽  
Capital Investment ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
High Energy ◽  
International Standards ◽  
Inlet Temperature ◽  
Process Data ◽  
Saving Energy ◽  
Discharge Pressure

Abstract The objective of this paper is to showcase successful and innovative means and techniques to improve and enhance centrifugal gas compressors (CGCs) performance, using methods to minimize power consumption, with no need for capital investment. These techniques will assure, if effectively followed, considerable reduction of the consumed energy. CGCs are the most widely used equipment in the oil and gas industry to boost gas, mainly hydrocarbons, to satisfy process treatments and pipeline requirements. In addition, CGCs are one of the major energy consumers, and therefore present an exceptional opportunity for saving energy. Focusing on lowering inlet gas temperatures, considering suction throttling of discharge pressure instead of the traditional discharge throttling, will help to reduce energy consumption. In this paper, a detailed analysis of factors aggravate or lead to undesired CGCs performance will be discussed along with solutions to minimize adverse impact. For example, operating the gas compressors at relatively high inlet temperature will result in higher energy consumption. After performing need analysis, results prove that we would save 3-7% of running compressors consumed energy. In addition, during compressor design phase, it was found that most motor driven compressor system uses discharge throttling, which incurs high-energy consumption. Instead, it is recommended to consider suction throttling to control discharge pressure, as will be explained. This paper will focus on a detailed case study in one of the running CGCs in an upstream gas-oil separation plant (GOSP-A). This paper proves the effectiveness of the proposed techniques in reinstating the CGCs in GOSP-A, to ensure better performance and save energy. This innovative technique is based on extensive process data analysis — evaluating operating, design data, related performance curves, and reviewing international standards. It will be illustrated that this type of analysis and techniques is a valuable tool for saving energy, in most cases, at oil and gas industries

scholarly journals Optimal Speed Profile Determination with Fixed Trip Time in the Electric Train Operation of the Cat Linh-Ha Dong Metro Line based on Pontryagin's Maximum Principle

2020 ◽  
Vol 10 (6) ◽  
pp. 6488-6493
Author(s):  
T. T. T. A. Anh ◽  
N. V. Quyen
Keyword(s):  
Energy Consumption ◽  
Maximum Principle ◽  
Pontryagin’S Maximum Principle ◽  
Speed Profile ◽  
Saving Energy ◽  
Pontryagin's Maximum Principle ◽  
Improve Energy Efficiency ◽  
Optimal Speed ◽  
Trip Time ◽  
Train Operation

The significant energy consumption for railway electric transportation operation poses a great challenge in outlining saving energy solutions. Speed profile optimization based on optimal control theory is one of the most common methods to improve energy efficiency without the railway infrastructure investment costs. The paper proposes an optimization method based on Pontryagin's Maximum Principle (PMP), not only to find optimal switching points in three operation phases: accelerating, coasting, braking, and from these switching points being able to determine the optimal speed profile, but also to ensure fixed-trip time. In order to determine trip time abiding by the scheduled timetables by applying nonlinear programming puts the Lagrange multiplier λ in the objective function regarded as a time constraint condition. The correctness and energy effectiveness of this method have been verified by the simulation results with data collected from the electrified trains of the Cat Linh-Ha Dong metro line in Vietnam. The saving energy levels are compared in three scenarios: electrified train operation tracking the original speed profile (energy consumption of the route: 144.64kWh), train operation tracking the optimal speed profile without fixed-trip time (energy consumption of the route: 129.18kWh), and train operation tracking the optimal speed profile and fixed trip time (energy consumption of the route: 132.99kWh) in an effort to give some useful choices for operating metro lines.

An intelligent system for energy management in smart cities based on big data and ontology

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Zaoui Sayah ◽  
Okba Kazar ◽  
Brahim Lejdel ◽  
Abdelkader Laouid ◽  
Ahmed Ghenabzia
Keyword(s):  
Big Data ◽  
Energy Consumption ◽  
Energy Saving ◽  
Intelligent System ◽  
Smart Cities ◽  
Semantic Integration ◽  
Saving Energy ◽  
Content Type ◽  
Multi Agent ◽  
Reduce Energy Consumption

PurposeThis research paper aims at proposing a framework based on semantic integration in Big Data for saving energy in smart cities. The presented approach highlights the potential opportunities offered by Big Data and ontologies to reduce energy consumption in smart cities.Design/methodology/approachThis study provides an overview of semantics in Big Data and reviews various works that investigate energy saving in smart homes and cities. To reach this end, we propose an efficient architecture based on the cooperation between ontology, Big Data, and Multi-Agent Systems. Furthermore, the proposed approach shows the strength of these technologies to reduce energy consumption in smart cities.FindingsThrough this research, we seek to clarify and explain both the role of Multi-Agent System and ontology paradigms to improve systems interoperability. Indeed, it is useful to develop the proposed architecture based on Big Data. This study highlights the opportunities offered when they are combined together to provide a reliable system for saving energy in smart cities.Practical implicationsThe significant advancement of contemporary applications (smart cities, social networks, health care, IoT, etc.) requires a vast emergence of Big Data and semantics technologies in these fields. The obtained results provide an improved vision of energy-saving and environmental protection while keeping the inhabitants’ comfort.Originality/valueThis work is an efficient contribution that provides more comprehensive solutions to ontology integration in the Big Data environment. We have used all available data to reduce energy consumption, promote the change of inhabitant’s behavior, offer the required comfort, and implement an effective long-term energy policy in a smart and sustainable environment.

Building performance in the context of industry pressures

2014 ◽  
Vol 8 (4) ◽  
pp. 527-543
Author(s):  
Craig Robertson ◽  
Dejan Mumovic
Keyword(s):  
Energy Consumption ◽  
Performance Assessment ◽  
Energy Gap ◽  
Building Energy ◽  
Energy Performance ◽  
Building Performance ◽  
Structured Interviews ◽  
Web Based ◽  
Actual Performance ◽  
Content Type

Purpose – This paper aims to explore the relationship between designed and actual building performance as represented in an Royal Institute of British Architects- and Chartered Institution of Building Services Engineers-backed web-based comparison platform and the industry perception of the pressures surrounding building performance assessment. European directives and UK Parliamentary Acts have resulted in a range of mechanisms aimed at encouraging monitoring of energy consumption, responsive management and evidence-based design. Web-based feedback platforms aim to feed evaluation data back to industry anonymously; however, there exists a range of barriers and disincentives that prevent widespread and habitual engagement with building evaluation. Design/methodology/approach – Using energy data from the CarbonBuzzweb platform and a series of semi-structured interviews, a mixed-methods study has been carried out. Analysis of the characteristics of the existing energy discrepancy between designed and actual performance shows where variance typically occurs. Interviews with industry actors presents a synopsis of the perceived and actual legislative and procedural pressures that exist in relation to building performance assessment. Findings – The conclusions of this paper identify weaknesses in the current legislative and incentivisation mechanisms with regard to targeting building energy performance and industrial pressures that hinder broader industry engagement with post-occupancy evaluation. Originality/value – The recommendations arising from this study are for adjustments to the existing legislative framework to increase participation in meaningful building energy evaluation targeted at the specifics of the energy gap and the motivations of industrial actors. This will specifically help to reduce building energy consumption and associated carbon emissions.

Saving Energy Consumption of Memory Systems by Voltage-Control Spintronics Memory (VoCSM)

2018 ◽  
Author(s):  
H. Yoda ◽  
Y. Ohsawa ◽  
Y. Kato ◽  
N. Shimomura ◽  
M. Shimizu ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Voltage Control ◽  
Memory Systems ◽  
Saving Energy
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