Energy efficiency

This paper presents a technique for integrating battery energy storage systems (BESS) into a distribution network with penetration of wind and solar power in order to improve the operation efficiency of distribution networks, exploit renewable energy capability, and reduce operation issues.

12p viling 11-10-2024 5 1   Download

High quality of service (QoS) requirements in multi-priority wireless sensor networks pose new challenges to the Internet of Things (IoT). In a multi-event wireless sensor network (MWSN), nodes generate different types of data packets with different priority such as urgent (high priority) or normal (low priority), with different traffic proportion.

10p viengfa 28-10-2024 3 2   Download

In this article, analytical, synthesis, and comparative methods are employed to evaluate and provide valuable insights, leading to the proposal of an energy-efficient model and Carbon dioxide emission reduction for Vietnam's tropical islands.

11p viengfa 28-10-2024 2 1   Download

This article seeks to make a scholarly contribution to the ongoing discussion on sustainable port operations within the broader context of the global shift towards renewable energy sources, by conducting a comprehensive examination of technological advancements and sustainable practices.

11p viuzumaki 28-03-2025 3 0   Download

It aims to evaluate the causal impacts of strategic management practices, investigate the mediating roles of innovation capabilities and operational efficiency, and provide actionable insights to foster sustainable business models and green economic growth in Vietnam’s renewable energy enterprises.

10p viaburame 14-03-2025 1 0   Download

Bài viết này được thực hiện trên cơ sở tổng quan tài liệu để phân tích và lựa chọn tiêu chí đánh giá của các tiêu chuẩn bao gồm BREEAM (Building Research Establishment Environmental Assessment Method) của Anh; LEED – NC (Leadership In Energy & Environment Design) của Mỹ; CASBEE (Comprehensive Assessment System for Building Environmental Efficiency) của Nhật Bản; ESGB (Environmental, Social, and Governance) của Trung Quốc và LOTUS (Local green and universal smart) của Việt Nam.

12p viaburame 14-03-2025 3 1   Download

This paper investigates the integration of heat pumps for heating boiler feedwater and evaluates the impacts of feedwater temperature and condensate recovery rates on fuel consumption, energy efficiency, and CO2 emissions.

10p viinuzuka 28-02-2025 3 1   Download

This paper presents a comprehensive investigation into the optimization of exciplex emission in organic light-emitting diodes (OLEDs). Through a systematic exploration of various combinations of hole-transporting materials (HTMs) and electron-transporting materials (ETMs), we elucidate critical factors influencing exciplex formation and its impact on OLED performance.

5p viyamanaka 06-02-2025 1 1   Download

This study investigates the performance of luminescent solar concentrators (LSCs) using inorganic phosphor films. We examined both single-layer and three-layer stacking configurations on BK7 glass substrates (5 cm × 5 cm × 5 mm), using red, yellow, and green phosphors.

9p viyamanaka 06-02-2025 11 2   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 7 2   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 2 2   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 6 2   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 6 2   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 6 2   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 515 259   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 89 20   Download

Hệ số năng lượng hiệu quả EER-Energy Efficiency Ratio: tỉ số giữa năng suất lạnh tổng định mức và tổng công suất điện tiêu thụ tại điều kiện thử nghiệm. Đơn vị SI-w/w. Tiêu chuẩn thử nghiệm TCVN 6576-ISO 5151:2010 Hê số lạnh hiệu quả toàn mùa SEER/CSPF: Tỉ số giữa tổng lượng nhiệt mà ĐHKK lấy đi từ không gian điều hòa và tổng lượng điện tiêu thụ trong toàn bộ thời gian ĐHKK vận hành ở chế độ làm mát. Đơn vị SI -kWh/kWh. Ở Mỹ và Canada hệ số này gọi là SEER- Seasonal Energy Efficiency Ratio....

28p tuanhoangbank123 11-07-2013 151 18   Download

This work demonstrated the potential of US for mitigating membrane fouling. However, the integration of the US transducers within the membrane system will be a major challenge for the application of US in membrane cleaning. It is more appropriate that US is used as pre-treatment to the membrane system, the transducers can be placed prior to the coagulant feed line. Further work on the determination of the detailed mechanisms associated with enhancing coagulation would enable optimisation of the system with regard to process, cost and energy efficiency.

108p runthenight05 01-03-2023 18 3   Download

The purpose of the thesis is described as follows: To develop an independent simulation model for IEEE 803.2az Energy Efficient Ethernet Standards with Active and Idle modes of operations; To design and simulate a traffic source generator with exponentially distributed inter-arrival periods, and forecast the duration of the next idle periods, based in the distribution of packet arrivals; To extend the simulation of Dynamic power management in Access networks with the inclusion of prioritized traffic, which changes the duration of low power modes;…

141p runthenight07 01-03-2023 11 3   Download

The aim of this thesis is investigate and design a small antenna which can be embedded onto a Polyethylene substrate (used for making roof tiles). The antenna can be used to harvest ambient energy by connecting it to a rectifier. Due to the dimensional constraints of a roof tile as well as the materials used, there are limitations imposed on the antenna size, and thus the radiation efficiency and bandwidth often become a limiting factor in the overall performance of the system.

93p runthenight04 02-02-2023 20 2   Download