Efficiency

Many devices now require a higher voltage supply than its predecessors. This has enabled the development of hybrid boost topology, which proved to have a higher conversion rate, though not without its own problems, especially the hard-charging of capacitors.

6p vibenya 31-12-2024 3 0   Download

The study aims to improve the safety and energy savings of IEVs during vehicle operation. First, the article builds a nonlinear dynamic model for IEVs, including electric motors, gearboxes, and braking systems.

7p vibenya 31-12-2024 1 0   Download

In this research, first-principle calculations have been performed to study the geometry structure and electronic properties of ZnO. All possible exchange-correlation energy functionals were used to perform geometry optimization of ZnO in order to find the efficient calculation conditions.

10p vibenya 31-12-2024 0 0   Download

Modern civilization is heavily dependent on energy, which burdens the energy sector. Therefore, a highly accurate energy consumption forecast is essential to provide valuable information for efficient energy distribution and storage. This study proposed a hybrid deep learning model, called I-CNN-JS, by incorporating a jellyfish search (JS) algorithm into an ImageNetwinning convolutional neural network (I-CNN) to predict weekahead energy consumption.

6p vibenya 31-12-2024 3 0   Download

Climate change has had significant impacts on the global climate, affecting the operational efficiency of buildings. This study employs future climate prediction methods based on the latest IPCC scenarios, using General Circulation Models (GCMs) to forecast climate conditions in three regions of Vietnam.

6p vibenya 31-12-2024 1 0   Download

The rapid development of manufacturing sectors in the contemporary Industry 4.0 era has prompted enterprises to adopt increasingly systematic, streamlined, and efficient organizational structures. In this scenario, production scheduling has arisen as an essential function that contributes to the effective allocation of organizational resources in the production process, while shortening production time and satisfying customer deadlines.

6p vibenya 31-12-2024 0 0   Download

The authors develop a system of differential equations describing the motion of the structural system equipped with DFP bearings. The Runge-Kutta numerical method, specifically the ode15s function in MATLAB, was used to solve these equations. The results of the calculations provide a comparison of the damping efficiency of the structural system with and without the use of DFP bearings, assessing the effectiveness of vibration isolation during an earthquake, with three components X, Y, and vertical considered.

5p vibenya 31-12-2024 4 0   Download

In the present study, cooling of PV module using a paraffin-based phase change material (PCM) in hot climate of Vietnam is investigated. Thermal modelling is first validated against experimental data reported in literature and then transient thermal simulations are carried out for a duration of 24 hours to assess the effect of PCM itself and PCM with internal fins.

6p vibenya 31-12-2024 0 0   Download

This study shows that when compression/bending and torsion are applied simultaneously, the bond between the concrete core and steel tube may weaken, leading to slippage, which in turn reduces the structural system’s load-bearing efficiency.

8p vibenya 31-12-2024 1 0   Download

This session is intended to discuss the following:Types and working principle of fans and blowers, applications of various fans and blowers, pressure rise flow coefficient and efficiency Pressure rise, flow coefficient and efficiency, velocity triangles, performance characteristics, fan laws

53p quoctuongdoan 10-07-2017 90 8   Download

Mời các bạn cùng tham khảo nội dung tài liệu "Chapter 7: Consumers, producers, and the efficiency of market" dưới đây để có thêm tài liệu tham khảo trong quá trình học tập và ôn thi. Nội dung tài liệu gồm những câu hỏi bài tập chọn đáp án đúng sai bằng tiếng Anh, hy vọng nội dung tài liệu sẽ giúp các bạn tự tin hơn trong kỳ thi sắp tới.

82p apdoi90 20-10-2015 104 7   Download

Mạng máy tính là gì? Lịch sử MMT Các khái niệm cơ bản Mô hình mạng Đồ hình mạng Các thành phần trong mạng máy tính Các ứng dụng mạng. Nhiều máy tính kết nối với nhau bằng phương tiện truyền dẫn Liên lạc và chia sẻ tài nguyênĐáng tin cậy (reliable) Công bằng (fair) Hiệu quả (efficient) Từ 1 ứng dụng đến các ứng dụng khác Tập tin, thư mục, … Máy in, máy fax, …

51p abcdef_15 27-07-2011 135 19   Download

Vấn đề năng lượng là vấn đề hàng đầu, rất quan trọng liên quan đến mọi thứ. Năng lượng ở miền Nam thường dùng thủy điện được năng lượng nhưng lại mất rất nhiều thứ như việc an cư sinh sống của người dân sống dọc 2 bờ sông rất khó khăn. Sử dụng năng lượng không biết tiết kiệm, ô nhiễm môi trường tác động đến môi trường sinh thái. Để nhận file powerpoint các bạn liên hệ vào facebook này của mình :https://www.facebook.com/Kientrucnv

78p kientrucnv 07-05-2012 512 259   Download

CNS 05 – năng lượng 2 HIỆU SUẤT SỬ DỤNG ĐIỆN Electricity Efficiency Nguyễn Kim Thanh 2010 .NỘI DUNG CHƯƠNG TRÌNH • Tại sao phải tập trung nghiên cứu về điện • Sử dụng điện trong ngành công

32p dungdiem 21-02-2013 114 27   Download

We have seen how in conducting efficiency benefit-cost analysis we often use market prices, either directly or indirectly, to value or cost project outputs or inputs. We use market prices directly when they are generated by perfectly competitive markets - markets that are not distorted by monopoly, monopsony, taxes or regulations.

26p muaxuan102 21-02-2013 69 10   Download

The reader may wonder why the amplifier stages studied in previous chapters are not suited to high-power applications. Suppose we wish to deliver 1 W to an 8- speaker. Approximating the signal with a sinusoid of peak amplitude VP, we express the power absorbed by the speaker as:

82p vanmanh1008 23-05-2013 48 7   Download

The need for operating circuits at increasingly higher speeds has always challenged designers. From radar and television systems in the 1940s to gigahertz microprocessors today, the demand for pushing circuits to higher frequencies has required a solid understanding of their speed limitations. In this chapter, we study the effects that limit the speed of transistors and circuits, identifying topologies that better lend themselves to high-frequency operation.

25p vanmanh1008 23-05-2013 65 4   Download

Consolidation of applications in cloud computing environments presents a significant opportunity for energy optimization. As a first step toward enabling energy efficient consolidation, we study the inter-relationships between energy consumption, resource utilization, and performance of consolidated workloads. The study reveals the energy performance trade-offs for consolidation and shows that optimal operating points exist. We model the consolidation problem as a modified bin packing problem and illustrate it with an example.

24p holy_ghost 05-04-2013 88 20   Download

Faster call setup No interference between signaling tones by network and frequency of human speech pattern. Greater Trunking Efficiency:- CCS has shorter call set up and tear down times that result in less call holding time, thereby reducing the traffic on the network. Information Transfer:- CCS allows the transfer of additional information along with the signaling traffic providing facilities such as caller identification and voice or data identification

42p vanmanh1008 24-06-2013 64 6   Download

PRODUCE-ECONOMICALLY- PART OF OIL LEFT BY CONVENTIONAL RECOVERY METHODS – Improvement of displacement efficiency decreasing Sorw miscible or near miscible gas injection chemical flood-surfactants increasing gravity forces oil vaporization – Improvement of volumetric sweep efficiency lowering mobility ratio by increasing
w chemical flood - polymers reducing
o thermal flood

118p minhhieu2105 19-06-2013 82 11   Download