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Short term prediction of energy consumption of residential houses is of increasing interest as self sustainable off grid energy solutions as well as distributed generation and energy exchange grids are developed. In areas with non-temperate seasons, weather conditions induce noticeable changes in consumption patterns depending on the tenant's air conditioning settings and the house's exposure to the...
Increasing energy efficiency represents an essential component of all energy strategies, directly contributing to sustainable development, increasing security of supply, the level of energy bill affordability etc. All the official documents mainly focus on establishing the quantitative targets and the orientation trajectories for obtaining energy savings, as well as on monitoring the orientation trajectories...
Pulp and paper industry is a highly energy intensive and the drying section of the paper machine consumes 64 % of total energy. The heat of the humid hot air resulting from the drying process has a usable energy potential which has to be recovered and represents a secondary energy resource. This paper analyses efficiency of introducing a complex heat recovery, in three stages, integrated into the...
Diesel Power Plant (PLTD) is one of power plants that commonly impact to the environment as well as it's expensive fuel. Diesel Power Plant is still inefficient because of high operation costs i.e. 89,31% depleted to fuel costs [7]. The combustion process on diesel engine does not produce a perfect combustion thereby require any changes. One of technology changes that more environmentally friendly...
An important challenge of modern data centers is to reduce energy consumption, of which a substantial proportion is due to the network. Switches and NICs supporting the recent energy efficient Ethernet (EEE) standard are now available, but current practice is to disable EEE in production use, since its effect on real world application performance is poorly understood. This paper contributes to this...
Due to the rapid development of intelligent lighting technologies, those intelligences, just like smooth dimming control, communication and networking, lumen control, predictive failure and maintenance, daylight harvesting, etc., which offers us a opportunity to incorporate non-traditional capabilities into our lighting design and makes the intelligent lighting solutions more attractive. Nowadays,...
This paper examines actual data for recent trends in electric energy demand in North America. Despite the conception of many persons, the electrical demand, as measured as either annual electric energy use or annual peak demand, is not rising rapidly. The reasons for this failure to grow are discussed, and the potential for new electric energy markets is outlined. The subject of load factor is explained,...
The System Dynamics is a modeling tool that allows to represent and to understand the dynamic behavior of complex systems, presenting the linear and nonlinear relations between the variables. The dynamics of a system is generated by the feedback of information among the variables that compose it, over time this feedback can change the behavior of the system. Despite being widely used in the electrical...
This paper presents a novel approach to the optimization of energy consumption in large scale industrial bulk good processes. The approach is based on a model-free self-learning algorithm solely based on available process data using ideas from the well known reinforcement learning framework. To this end energy consumers of the plant are integrated in the optimization framework such that each consumer...
The main goal in this paper is to obtain low power consumption of wireless sensor nodes and collected distributed data in environmental parameters monitoring. Communication module and the controller should be in idle state as long as possible when they are not active. In design and development of Wireless Sensor Networks (WSNs), one of the main challenges is to achieve long lasting battery lifetime...
The smart grid concept offers an opportunity to design new environmentally friendly energy markets for reducing CO2 emissions. To achieve this goal, we should increase the use and penetration of green energy while softening our dependency on gray (non-environmentally friendly) energy too. In this work we show how load shifting and storage can be incorporated into new energy markets to reduce gray...
The municipality of Alba Iulia intend to manage the energy needed for promoting a decent level of life, and in the same time avoiding waste of energy. The approach is part of the ample project through which the municipality wants to turn Alba Iulia into “Smart City”. The main objective of reducing CO2 emissions up to 24% until 2020 relative to the amount of emissions evaluated for the reference year...
Nowadays, the energy consumption of information and communication technology (ICT) devices became more and more dominant factor of electricity consumption of the offices, therefore supplying these devices from renewable sources can help to improve the energy efficiency and makes the offices greener. On the other hand, the mobile devices (laptop computers, tablets smartphones) have become more popular...
The European Commission published the climate and energy package “20 20 20” with the principle scope of reducing the greenhouse gas (GHG) emissions and increasing the production from renewable energy sources (RES). Electric Vehicles (EVs) contribute to lower the GHG emissions, as they produce no exhaust gas as opposed to internal combustion engine (ICE) vehicles. The present study is focused on the...
The increasing atmospheric carbon-dioxide level and the increasing energy need for transportation are being considered as more and more serious problems nowadays. Some people think of electric vehicles as a solution; this would decrease the air pollution in cities as well. Another endeavour to reduce the carbon dioxide emission coming from transportation is the utilisation of biofuels in vehicles...
The changing roles of energy markets can lead to new solutions. In this paper this problem is approached in a different way, whether it's possible to involve the consumers into the power control with different financial incentives. To create a demand response analysis, we are using the energy consuming data of a Hungarian industrial companies. It's important to note that with using demand side management...
The aim of the paper is maximization the consumption of energy generated by RES in distribution system. It is achieved by aggregation of loads and power generating units to common internal grid called power park. In order to maximize consumption of renewable energy, the RES sizing optimization model is used. In order to reflect the intermittency of renewables, they are modelled by generation profiles...
Whenever an electricity system fails to attend its demand, several impacts are verified, mainly economic and social costs. For the Brazilian Electricity Sector — BES these costs are called electricity deficit marginal cost and its discretization in steps are represented as a function named Cost of Deficit Function — CDF. In Brazil, optimization models are used for operating and planning the expansion...
Understanding the causal directions between electricity consumption (EC)/electricity production (EP) and Gross Domestic Product (GDP) is helpful for policymakers in order to design, redesign, and implement effective energy policies. Although there are many studies on this issue, no consistent conclusion exists. In this paper, we provide an updated analysis of such relationship for Mexico. We employ...
In the beginning of the Iberian Electricity Market (MIBEL), in 2006, the Portuguese regulator created a new tariff scheme, aiming at responding to the new market competition environment. At the same time, the regulator intended to improve consumers' awareness and incentivize renewables generation. After one decade, this policy may be considered successful, as it led to a good level of transparency...
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