Increasing energy efficiency

The main contribution of this paper is to show a new AC/DC converter based on the rearrangement of the flyback converter. The proposed circuit only manages part of the energy and the rest is delivered directly from the source to the load. Therefore, with the new topology, the efficiency is increased, and the stress of the components is reduced. The rearrangement consist of the secondary of the flyback is placed in parallel with the load, and this arrangement is connected in series with the primary side and the rectified voltage source.

16p 63696369 20-06-2024 3 1   Download

Part 1 book "Renewable energy and power supply challenges for rural regions" includes content: Solar concentrators; tools and methods of information support for the development of renewable energy; electrical and heat power production using the products of air conversion of motor diesel fuel and electrochemical generator for agricultural consumers; increasing the energy efficiency of photovoltaic systems operating under conditions of uneven illumination; materials and methods of thermal energy storage in power supply systems; creating a synergy.

223p dianmotminh03 11-06-2024 3 1   Download

Part 1 of ebook "Energy conservation in buildings - The achievement of 50% energy saving: An environmental challenge?" provides readers with contents including: a total energy design for 92 houses with combined use of solar heating and energy conservation; energy, environment and human development in the arab world; some experiments on improving thermal comfort and increasing useful thermal gains in sunspaces; haden court energy efficient estate improvement;...

239p dongmelo 20-05-2024 4 2   Download

The study was carried out on the basis of work with grant of the RFBR No. 19-010-00040 “Interaction between the real and virtual sectors of the economy in order to increase their efficiency and ensure a balance of interests between business, society and the state”. This paper proposed to introduce integrated indicators of the effect of digitalization.

9p longtimenosee09 08-04-2024 6 2   Download

Ebook "Selective catalysis for renewable feedstocks and chemicals" is to highlight several recent research efforts to discover and to develop selective, catalytic reactions and processes for the conversion of ligno-cellulosic and plant oil-derived feedstocks to value-added chemicals. The value of catalytic chemical processes lies in their reduced energy consumption and potentially increased efficiency and product selectivity, which minimize environmental and societal impacts.

265p tudohanhtau1006 29-03-2024 3 1   Download

Supply chain management played a critical role in the electric power industrial chain optimization. The paper notes that in order to increase transparency and efficiency of settlements for electric energy, the introduction of intelligent metering systems is necessary. In order to achieve efficiency, transparency, data security and reduce transaction costs abroad, blockchain technologies that have both positive and negative characteristics have begun to be actively introduced.

6p longtimenosee04 06-03-2024 8 0   Download

The popularity of lithium-ion batteries in various mobility and energy storage applications has driven increasing demand for efficient and reliable battery charging solutions. Synchronous Buck Converters have gained prominence as a viable choice for regulating the charging voltage and current in these applications due to their inherent advantages, such as high efficiency, compact size, and ease of control.

11p vimichaelfaraday 28-12-2023 6 4   Download

The Philippines is one of the top countries with high vulnerability to natural calamities aggravated by climate change, which is brought about by increased emissions of greenhouse gases (GHG) due to various factors including the rampant use of products containing ozone - depleting substances (ODS).

5p viindra 06-09-2023 5 2   Download

"Intelligent reflective surface supports mobile network beyond 5G and 6G" provide network designers, researchers, and authors, the author will conduct a survey of works to provide information on the theory of structure and operation of this outstanding technology.

8p nhanchienthien 25-07-2023 8 4   Download

The building sector is a significant energy consumer, and its share of energy consumption is increasing because of urbanization. Forecasting the electricity load for improving building energy efficiency is imperative for reducing energy costs and environmental impacts.

5p vifred 23-12-2022 13 3   Download

This paper presents design solutions of control circuit and temperature stability in a closed environment, in order to increase stability and the fast response of heaters to save energy efficiently.

5p vispyker 16-11-2022 8 3   Download

Natural lighting with courtyard’s solutions for row-house has become one of the passive design principles which brings efficiencies of saving energy, improving the lighting conditions for indoor environment, contributing to increase aestheticism and use space diversity.

5p vilexus 30-09-2022 13 2   Download

Supercapacitors (SCs) are important devices used in renewable energy storage applications on urban railways due to their high power density, good performance, and long maintenance-free lifetime. The position and capacity of supercapacitors play an essential role in increasing energy efficiency and improving the operating condition of the power supply system.

15p viaudi 29-08-2022 15 3   Download

Optimal pump scheduling has been applying to decrease operating costs of water distribution systems (WDSs). However, the operations of pumping stations will result in an increase of Greenhouse gas emission (GHG). To reduce GHG, pumping stations should be operated with high efficiency.

6p vichristinelagarde 04-07-2022 6 2   Download

Energy efficiency and energy security is a hot topic in science and politics. Annually, Ho Chi Minh City (HCMC) alone consumes about one fifth of total power consumption in Vietnam. This paper first gives an overview of the situation of the energy system in HCMC as an important part of the energy system in Vietnam. We then describe some selected programs to increase energy efficiency.

14p vimarissamayer 02-06-2022 14 2   Download

DSM is a set of tools and practices taken by utilities to influence the amount and/or timing of customers’ energy demand in order to use electricity most efficiently. DSM decreases the cost of meeting customers’ energy needs through increased investment in enduse energy efficiency and load management. Demand-side resources can reduce or postpone investment in generation, transmission, and distribution capacity, and decrease fuel consumption, and improve environmental quality.

10p visherylsandberg 18-05-2022 7 1   Download

In addition, the effect of energy efficiency labelling can be increased by appealing to immediate attitude functions, to social-adjustive benefits (in Ghana) and to the expression of environmental values (in the Philippines). Functional appeals to delayed monetary savings appear to reduce the label’s impact. Results call for using contextually adapted campaigns to maximize the impact of energy efficiency labelling.

15p huangminghao_1902 27-02-2022 10 2   Download

The mining and energy sector is still the driving force for economic development and community empowerment, especially around mining and energy activities. Therefore, increased investment in the mining and energy sectors needs to be increased and balanced with stricter safety and environmental policies. This paper aims to formulate a quadratic investment portfolio optimization model, and apply it to several stocks in the mining and energy sectors.

10p mynguyenha 21-07-2021 10 2   Download

The energy management strategy is the key to increasing the energy efficiency index (EEI) and controlling buildings’ carbon emissions. This article discusses the energy policy strategy at Siliwangi University based on four main components of green campus: the profile of the electricity load, energy consumption, the rate of the number of vehicles, and vehicle activity in the campus environment. We propose four scenarios to meet the EEI and carbon emissions standards in 2025.

9p mynguyenha 21-07-2021 6 2   Download

The world production of vegetables, India is the second largest producer next to china. In India, there is no mechanization available for onion transplanting. The transplanting of onion seedlings mainly depends on farm workers. So, manually operated two row paper pot onion transplanter was developed. In agricultural mechanization, the major role of ergonomics is to increase the efficiency of the operation. The study was conducted to evaluate the manually operated two row paper pot onion transplanter and compared with conventional method of transplanting.

9p caygaocaolon11 21-04-2021 11 2   Download