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Energy service companies are an effective tool for financing energy-efficient projects
The article analyzes the mechanisms for financing energy-efficient projects both in Ukraine and in European countries. Attention is focused on the use of a financing mechanism such as ESCO, as the most acceptable for Ukrainian realities.
6/18/2020 1:10:26 PM +00:00
Hoạt động sản xuất điện từ năng lượng tái tạo ở Việt Nam
Tài liệu thông tin đến các bạn hoạt động sản xuất điện từ năng lượng tái tạo ở Việt Nam như phân loại năng lượng tái tạo; thực trạng sản xuất điện tư năng lượng tái tạo ở Việt Nam...
6/18/2020 1:06:22 PM +00:00
Bài giảng Hoạt động sản xuất điện từ năng lượng tái tạo ở Việt Nam
Bài giảng thông tin đến quý độc giản khái niệm về năng lượng tái tạo; phân loại năng lượng tái tạo; thực trạng sản xuất điện tư năng lượng tái tạo ở Việt Nam; một số khó khăn và giải pháp trong hoạt động sản xuất điện từ năng lượng tái tạo. Mời các bạn cùng tham khảo bài giảng để nắm chi tiết nội dung kiến thức.
6/18/2020 1:04:54 PM +00:00
Evaluating the possible use of phytoplankton and zoobenthos for water quality assessment: A case study at Bung Binh Thien reservoir, An Giang province, Viet Nam
The study aimed to evaluate water quality at Bung Binh Thien Reservoir, in An Giang Province, Viet Nam using Shannon-Wiener species diversity index (H’) and associated average score per taxon (ASPT) calculated from composition of phytoplankton and zoobenthos.
6/18/2020 10:34:26 AM +00:00
Thiết kế cải tạo xe lắc năng lượng mặt trời dùng cho người khuyết tật
Nhằm góp phần cải thiện chất lượng sống cho người khuyết tật, chiếc xe lắc ba bánh được thiết kế cải tạo thành xe lắc năng lượng mặt trời. Động cơ điện 24 V – 250 W được lắp đặt ở bánh trước, được cấp điện từ hai bình ắc quy 12 V – 30 Ah, lắp đặt giá đỡ và bốn tấm pin mặt trời 12 V – 55 W. Giá đỡ và các tấm pin còn có tác dụng như mui che.
6/18/2020 10:34:18 AM +00:00
An analysis of the surface potential of monocrystalline silicon solar cell using kelvin probe force microscopy
This paper investigates the effect of defects on the electrical properties of monocrystalline silicon solar cells (mono-Si/m-Si). It characterises work function in terms of surface potential (SP) using scanning probe microscopy (SPM), and Kelvin probe force microscopy (KPFM) in force modulation mode, as opposed to the usual amplitude modulation mode.
6/18/2020 7:59:21 AM +00:00
Experimental study of performance and emission characteristics of waste beef tallow biodiesel
This research utilized low cost feedstock of waste beef tallow for biodiesel synthesis and its application in a CI engine. The biodiesel and diesel blends B0, B20, B40, B60, B80 and B100 were used in a stationary tractor diesel engine. Performance and emission parameters brake specific fuel consumption (BSFC), brake thermal efficiency (BTE), exhaust gas temperature (EGT), carbon monoxide (CO), oxides of nitrogen (NOx) and hydrocarbon (HC) were tested at a constant speed of 2000 rpm and varying loads.
6/18/2020 7:55:17 AM +00:00
Review of solar grain drying
In this paper a review is presented on the different techniques used in solar drying, different aspects of solar drying, and modelling of thin layer and deep bed. In addition, principles of operation of solar drying systems and practical examples of some of the available solar dryer systems are presented. The main objective of this review is to identify areas of improvement in solar grain drying systems that need to be addressed for performance enhancement and quality assurance of the relevant solar drying technologies.
6/18/2020 7:54:35 AM +00:00
Computational fluid dynamics in solar drying
This paper presents the underlying principles of CFD, the advantages and disadvantages of using CFD, and the recent works that have been carried out. The paper focuses on the application of CFD in solar drying of food products, and identifies potential areas of improvements for further research.
6/18/2020 7:54:29 AM +00:00
Review of factors affecting energy efficiency in commercial buildings
Electro-mechanical equipment and systems can be easily controlled, but regulations and social dynamics play an important role in the consumption of energy of such equipment and systems, with social dynamics being the most unpredictable energy consumption factor. Energy management of a commercial building can optimise energy efficiency by managing the equipment of the building as well as the energy consuming activities taking place whilst the building is in operation.
6/18/2020 7:54:17 AM +00:00
Solar assisted technologies for cooling and air conditioning – A review
This paper provides a brief review of the installed solar-assisted technologies currently being used for cooling or air conditioning purposes. The review identifies some of the finest technologies used to convert solar energy into space cooling. Air conditioning is an attractive area for solar energy use since it is estimated that 45 % of household energy consumption is used for cooling. Solar cooling can be divided into two main types, solar thermal and solar photovoltaic (PV).
6/18/2020 7:54:05 AM +00:00
Design theory and computational analysis of a solar still
This research article describes the design theory, mathematical model employed by computational software and modelling process utilized in the three dimensional multiphase heat and mass transfer model of a double slope solar still. The double slope solar still performance results obtained from the computational analysis are summarized and graphed.
6/18/2020 7:52:59 AM +00:00
Improvement of power output of the wind turbine by pitch angle control using RBF neural network
In order to obtain maximum power output of wind turbine systems, it is necessary to control the wind turbine such as pitch angles and torques by several methods. In this paper, the radial basic function (RBF) neural network is used to control the variability of blade pitch angles.
6/18/2020 7:50:20 AM +00:00
Preliminary analysis of ground based measured solar data from sauran sta station at Umlazi, South Africa
This paper presents the preliminary analysis of ground-based measurements solar data in Umlazi, South Africa. From this analysis, data statistics and statistic models for the global horizontal irradiance (GHI), the direct horizontal irradiance (DHI) and the ultraviolet radiations (UVR) are obtained for Durban and surrounding areas. Those results can be used in the design and analysis of solar systems and can also be used as referential parameters for further assessment of solar energy potentials for those areas.
6/18/2020 7:44:06 AM +00:00
Development of environmental monitoring in areas of nuclear facilities location
This article describes the experience of implementing the On-site Subsoil Condition Monitoring up to 2017 and outlines the basics of its integration into the Complex System of Environmental Monitoring. For representing data on the natural and technogenic systems, geoenvironmental information packages are necessary. The authors have given data on the development and integration of geoenvironmental information packages of the nuclear industry enterprises into the Complex System of Environmental Monitoring.
6/18/2020 7:42:53 AM +00:00
The effect of transverse vibration on the natural convection heat transfer in a rectangular enclosure
The study was carried for a Raghiely number between (3.77 - 10.8)*107 with applied heat flux between (20 - 45) Watt. The vibrational experimental measurements were carried out for different frequency ratio (0.87-1.6) and vibrational Rayleigh number ranged between (0.12 - 2.7)*107 . The results of the heat transfer inside the enclosure without vibration show a very close agreement with the published one.
6/18/2020 7:42:23 AM +00:00
Design and construction of a 0.5 KW solar tree for powering farm settlements
This is achieved by generating electricity from a single or multiple number of solar panels connected with a charge controller, a battery bank for storage and an inverter circuit to supply electrical power. Depending on the electrical load demand and the applications coverage area, the solar tree rating and specification can be a single-phase or three-phase AC output.
6/18/2020 7:40:50 AM +00:00
Prototype of a small (solar-wind) hybrid power plant
This study aims to make a prototype of a hybrid wind power plant with solar energy as an alternative energy source. The implementation method is done by making prototypes of wind power plants and solar power plants. Furthermore, the two plants are combined and are commonly called hybrid systems. This research was conducted at the Electrical Engineering Laboratory, Paulus Indonesia Christian University, Makassar. The results of the study were obtained for each 120W power plant (PLTB), 100W Solar Power Plant (PLTS). Thus the maximum power produced by the hybrid system is ± 220 W.
6/18/2020 7:38:06 AM +00:00
Testing of solar diesel hybrid power plant battery charging systems
This study aims to examine the charging current of a solar energy hybrid generator with a Genset / Diesel and the time used to fill the accumulator in conditions without load and load conditions. The results showed that the solar energy hybrid generator and Genset / Diesel prototypes were able to produce electrical power at 08.00 - 17.00 in the average sunny weather of 290.7 Wp without loading and at the time of load of 236.4 Wp. At night, the energy stored in the battery is converted into electrical energy to supply the load. Thus it can save electrical energy.
6/18/2020 7:38:00 AM +00:00
The development of performance dashboard visualization with power Bi as platform
One of the finding is that the data cleansing process is the most important stage to produce the right information. The other being the involvement of the user from the analysis and design process to the result validation will greatly improve the quality of the required dashboard. Moreover, the paper aims to explore the capability of Power BI in supporting the decision making process other than by simply using the dashboard.
6/18/2020 7:37:42 AM +00:00
Frame work analysis (stage 4): Proposing a validated frame work to enhance the adoption of innovative drilling technologies in upstream uae oil and gas
The findings/frame work from the third stage of frame work analysis gets further validated / tested by the Grounded theory for one final time in the fourth stage of frame work analysis. The researcher used NVIVO 12 for data analysis due to the “Time and Efforts factor” involved.
6/18/2020 7:36:48 AM +00:00
Corrosion failure analysis of copper heat exchanger by using a non destructive technique
Temperature is directly proportional to the pH because of copper oxide layer formed as semi-protective layer to protect the metal surface from corrode and decrease the corrosion rate. With higher of temperature, the copper concentration increase. This is because of extreme environment which is in very high or very low pH will break down the protective layer and effect the concentration of water samples. As a conclusion, the NDT methods used have significantly determine the corrosion failure analyses.
6/18/2020 7:35:06 AM +00:00
Grame work analysis (Stage 2): Creating a frame work to enhance the adoption of innovative drilling technologies in upstream uae oil and gas
The Findings/Framework proposed in the Stage 1 of Frame Work Analysis in the paper titled “Frame Work Analysis (Stage 1): Creating a Frame Work to Enhance the Adoption of Innovative Drilling Technologies in Upstream UAE Oil and Gas” gets further validated/tested in this paper. Content Analysis is performed in the second stage of validation in the Frame Work analysis. The researcher used NVIVO 12 for data analysis due to the “Effort and Time factors” involved in Manual Frame Work Analysis.
6/18/2020 7:34:48 AM +00:00
Grame work analysis (Stage 1): Creating a frame work to enhance the adoption of innovative drilling technologies in upstream uae oil and gas
The points to be noted in the results of data analysis are (1) Two new variables emerged - “Central Innovation Office” and “Age” (2) Some Variables got eliminated – “Efforts” + Associated Variables, “User Satisfaction and Trust” + Associated Variables, “Familiarity”, “Innovator Support”, “Environmental Benefits”, “Environmental Benefits”, “Trade up or Buy” and “Brand Loyalty”.
6/18/2020 7:34:42 AM +00:00
Perspective of geothermal earth enegry use in north-west district of Russia
Goal of the research is an analysis of economical efficiency of geothermal energy use in North-West region of Russia using an example of heat pumps. Authors considered expediency of Earth’s geothermal energy use in North-West district using an example of European states. Analysis of specific factors characterizing this type of energy, as well as its extraction and used technology is done.
6/18/2020 7:34:23 AM +00:00
On the loop expansion of the effective action
Based on the DeWitt formula the loop expansion of the effective action is easily established. Extending to the system with finite density we develop the in-medium DeWitt formula, which is the starting point for setting up loop expansion of the in-medium effective action.
6/18/2020 7:28:09 AM +00:00
Sensitivity analysis of minor actinides transmutation to physical and technological parameters
This presents the advantage of decoupling the management of the minor actinides from the conventional fuel and not impacting the core reactivity coefficients. In both cases, the design and analyses of potential transmutation systems have been carried out in the frame of Gen IV fast reactor using a “perturbation” approach in which nominal power reactor parameters are modified to accommodate the loading of minor actinides.
6/18/2020 7:05:47 AM +00:00
Nuclear core activity reconstruction using heterogeneous instruments with data assimilation
Evaluating the neutronic state (neutron flux, power . . . ) of the whole nuclear core is a very important topic that has strong implication for nuclear core management and for security monitoring. The core state is evaluated using measurements and calculations.
6/18/2020 7:05:41 AM +00:00
Eddy current testing system for bottom mounted instrumentation welds
The capability of eddy current testing (ECT) for the bottom mounted instrumentation (BMI) weld area of reactor vessel in a pressurized water reactor was demonstrated by the developed ECT system and procedure.
6/18/2020 7:05:33 AM +00:00
Characterization of the ion-amorphization process and thermal annealing effects on third generation SiC fibers and 6H-SiC
The objective of the present work is to study the irradiation effects on third generation SiC fibers which fulfill the minimum requisites for nuclear applications, i.e. Hi-Nicalon type S, hereafter HNS, and Tyranno SA3, hereafter TSA3. With this purpose, these fibers have been ion-irradiated with 4 MeV Au ions at room temperature and increasing fluences.
6/18/2020 7:05:27 AM +00:00