Direct solar energy

In recent years, there has been a growing focus on solar thermal collectors as they offer a direct and efficient means of converting solar energy into usable forms. In line with this, significant attention has been directed towards advancing transition metal nitride and metal oxynitride nanostructures for solar-thermal collectors to maximize solar energy harvesting.

9p vigojek 02-02-2024 4 1   Download

Lecture Power system stability - Lesson 25: Direct Methods, Modeling Wind and Solar provide students with knowledge about stability phenomena and tools; transient energy function (TEF) techniques; mathematical formulation; critical clearing time; Lyapunov's method; constructing the transient energy function; potential energy boundary surface;...

43p hanthienngao 15-04-2022 16 1   Download

A photovoltaic irrigation pump system was designed. The use of photovoltaic system reduces the load of increasing electric demand on government as it is alternative for conventional energy in agriculture sector. The Solar Photovoltaic (SPV) array converts solar energy directly into electricity as direct current (DC).

6p gaocaolon9 22-12-2020 16 2   Download

In this paper, we report the synthesis of rGO-TiO2 nanocomposite electrode and its effect on the performance of DSCs. The nanocomposite rGO-TiO2 photoelectrode was examined by means of current-voltage (I-V) characteristics of the solar cell when illuminated and in the dark. The results indicate that, unlike the Nb2O5 that forms an energy barrier at the surface and SrTiO3 that shifts the conduction band of the TiO2 in the negative direction, rGO doping allows more dye to be adsorbed due its large surface area thus improving the light harvesting efficiency (LHE).

13p kequaidan8 02-11-2020 10 2   Download

Due to the continuous increase in the cost of fuel and the effect of emission of gases from the burnt fuel into the atmosphere, this necessitated the use of the abundant solar energy from the sun as a source of power to drive a lawn mower. A solar powered lawn mower was designed and developed, based on the general principle of mowing. The designed solar powered lawnmower comprises of direct current (D.C) motor, a rechargeable battery, solar panel, a stainless steel blade and control switch.

7p nguaconbaynhay7 15-08-2020 23 2   Download

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.

10p cleopatrahuynh 01-06-2020 10 0   Download

The agriculture sector nowadays in Palestine relies mostly on conventional energy sources and traditional irrigation ways. Considering some factors such as high costs of fossil fuels and providing new electrical network, especially to remote areas and where grid electricity is either inaccessible or expensive to expand, therefore a solar photovoltaic (PV) powered irrigation system can be a practical choice for irrigating.

7p partimesinhvien 13-05-2020 27 1   Download

In India p-v cells or arrays are efficiently contributing in various sectors for power generation and lightning systems. Beside this it can also be used to make a system that operates on direct solar energy. Efforts are made to improve the efficiency of solar crop / potatoes dryer in the present work. The present model is consisting of photovoltaic cells, charge controller, battery, heating element or coil to improve the efficiency and specially modified for working in the night environment to dry crop, spices, potatoes, fruits and vegetables.

8p kethamoi4 16-04-2020 17 1   Download

This paper provides a brief review and update on the Voyager observations of the interaction of the heliosphere with the interstellar medium.

5p kethamoi1 17-11-2019 15 0   Download

The aim of this thesis is to carry out a Potential Analysis and feasibility Evaluation of the further Introduction of Solar and Biomass Energy in South East Asia. This is serving the purpose of assisting the affected nations in South East Asia to tap into their abundantly available potential. Only if the right technologies are chosen and the right strategies pursued, the nations in South East Asia are able to direct their economic growth and the pairing energy hunger into a sustainable direction by drawing on the advantages of renewable energies.

253p nguyenyenyn117 14-06-2019 41 4   Download

Chapter 12 - Renewable energy and nuclear power. The contents of this chapter include all of the following: Direct solar energy, indirect solar energy, other renewable energy sources, nuclear energy, pros and cons of nuclear energy, radioactive waste, future of nuclear power.

49p shiwo_ding5 22-05-2019 19 1   Download

The results reported in this study demonstrate the viability of DCMD for small-scale seawater desalination in Vietnam given its long coastline together with a large number of islands and great solar energy availability.

8p lamtan3547 04-11-2018 12 1   Download

Chapter 7 - Energy and water. After studying this chapter you will be able to understand: How to save electricity in the office and at events by focusing on energy efficiency; how direct sunlight (passive solar power) can enhance the event environment while providing light and heat; how renewable energies such as solar, wind, water, and biofuel can provide energy while adding to the event atmosphere;...

18p trueorfalse8 07-09-2017 49 6   Download

We’re already making great strides in this direction. Agencies across the Federal government, including the Departments of Energy, Agriculture, and the Interior, are working to promote clean energy deployment by offering grants under the Recovery Act to renewable energy manufacturers and developers; funding cutting-edge R&D; modernizing our rural energy infrastructure; siting the world’s largest solar power plants on public lands; and opening a new frontier for offshore wind development.

32p nhacchovina 23-03-2013 52 4   Download

For retailers, success is easy to measure: it’s the ringing of the cash register. a state solar program’s marketing activities, to be effective, also must lead to an action: an application for a solar program’s financial incentive to purchase and install a solar energy system. While state solar programs are not directly “selling solar installations” to customers, nevertheless, they measure success in the form of megawatts of solar installed. therefore, the state mar- keting approaches and activities must lead the customer to the solar sale.

148p lenh_hoi_xung 21-02-2013 57 5   Download

Green projects – particularly sustainable energy sources and clean technology - include multiple technologies, at different stages of maturity. The appropriate type of financing will be chosen according to the stage of development of the technologies. For example venture capital financing is normally suited for un-proven and un-tested technologies, while project financing is used for mature technologies such as wind and solar.

54p quaivatdo 19-11-2012 68 5   Download

Solar cells are optoelectronic devices that convert the energy of solar radiation directly into electricity by the photovoltaic (PV) effect. Assemblies of cells electrically connected together are known as PV modules, or solar panels. The photovoltaic effect was first recognized in the 19th century but the modern PV cells were developed in the mid-1950s. The practical application of photovoltaics started to provide energy for orbiting satellites.

0p ktcn_1 10-07-2012 98 26   Download

In theory, significant percentage of energy that can be used for human needs, before it is allowed to complete cycle of energy flow (that is to be dissipated to space). Some of it may be exploitation and use as a solar energy directly, but another way to use natural photosynthesis to create biomass can be viewed as a form of chemically stored solar energy energy.

408p samsungwifi 04-04-2012 87 9   Download

As populations increase and countries industrialize, the world’s demand for energy increases. Our supply of petroleum and gas is limited, but the photovoltaic cell offers a solution to the problem of a future energy shortage. This cell is already an important source of energy. In fact, it seems almost like magic. The photovoltaic cell changes sunlight directly into energy. Solar energy – energy from the sun – is clean, easily available, inexhaustible, and free, if the equipment is available....

4p luuhuyhoan 01-09-2010 582 43   Download