染雾A new technology for harnessing the Sun's energy
篇一
The world is currently facing an energy crisis, with the demand for electricity continually increasing while non-renewable sources of energy are depleting. As a result, researchers and scientists have been exploring new technologies to harness the Sun's energy, which is both abundant and renewable. One such technology that has emerged is solar panels.
Solar panels are devices that convert sunlight into electricity by utilizing the photovoltaic effect. The photovoltaic effect occurs when photons from sunlight strike the surface of a solar panel, freeing electrons from their atoms and generating an electric current. This electricity can then be used to power various appliances and buildings.
One of the major advantages of solar panels is that they produce clean energy. Unlike fossil fuels, which release harmful pollutants into the atmosphere when burned, solar panels do not produce any emissions during operation. This makes them an environmentally friendly alternative to traditional energy sources.
Solar panels are also cost-effective in the long run. Although the initial installation cost may be high, the operational costs are significantly lower compared to conventional energy sources. Once the solar panels are installed, there are no fuel costs, and maintenance requirements are minimal. This makes solar energy a viable option for remote areas and developing countries that lack access to electricity grids.
Furthermore, solar panels have a long lifespan. Most solar panels come with a warranty of 25 to 30 years, and many continue to produce electricity even after the warranty period. With proper maintenance, solar panels can provide a consistent source of electricity for decades.
Despite these advantages, there are some challenges associated with solar panels. One of the main challenges is their efficiency. Currently, solar panels have an efficiency rate of around 15% to 20%, which means they can only convert a fraction of the sunlight they receive into electricity. Researchers are actively working on improving the efficiency of solar panels to make them more viable.
Another challenge is the intermittent nature of solar energy. Solar panels can only generate electricity during daylight hours, and their output is affected by weather conditions. This means that energy storage systems, such as batteries, are necessary to store excess electricity generated during the day for use at night or during cloudy days.
In conclusion, solar panels offer a promising solution for harnessing the Sun's energy. They provide clean and renewable energy, are cost-effective in the long run, and have a long lifespan. While there are challenges to overcome, ongoing research and advancements in technology are expected to improve the efficiency and reliability of solar panels, making them an essential component of our future energy mix.
篇二
Over the past few decades, advancements in technology have revolutionized the way we harness and utilize the Sun's energy. One such technology that has gained popularity is concentrated solar power (CSP).
Concentrated solar power works by using mirrors or lenses to concentrate sunlight onto a small area, such as a solar receiver. The concentrated sunlight heats up a working fluid, such as water or oil, which then produces steam to drive a turbine and generate electricity. This technology allows for the efficient capture and utilization of solar energy on a large scale.
One of the major advantages of concentrated solar power is its ability to store excess heat for use during periods of low sunlight. This is achieved through the use of thermal energy storage systems, such as molten salt or phase-change materials. These storage systems can store heat for several hours or even days, ensuring a continuous supply of electricity even when the Sun is not shining.
Another advantage of concentrated solar power is its ability to generate electricity even in cloudy or hazy conditions. Unlike traditional photovoltaic panels, which rely on direct sunlight, concentrated solar power can still produce electricity by focusing diffused sunlight onto the solar receiver. This makes it a reliable and consistent source of energy in regions with varying weather patterns.
Furthermore, concentrated solar power plants can be built on a large scale, making them suitable for utility-scale electricity generation. These plants can be designed with multiple mirrors or lenses, allowing for the concentration of sunlight from a wide area. This scalability makes concentrated solar power a viable option for meeting the increasing energy demands of growing populations.
Despite its advantages, concentrated solar power also faces challenges. The initial installation and construction costs of concentrated solar power plants can be high, making it less economically viable compared to other renewable energy sources. However, with advancements in technology and economies of scale, the costs are expected to decrease in the future.
Additionally, concentrated solar power requires a large land area for the installation of mirrors or lenses. This can be a constraint in densely populated areas where land availability is limited. However, innovations such as solar towers, which use tall structures to concentrate sunlight, can help overcome this limitation.
In conclusion, concentrated solar power offers a promising technology for harnessing the Sun's energy. Its ability to store excess heat, generate electricity in varying weather conditions, and scale up for large-scale electricity generation make it a viable option for meeting our energy needs. With further advancements and cost reductions, concentrated solar power has the potential to play a significant role in our transition towards a sustainable and renewable energy future.
A new technology for harnessing the 篇三
A new technology for harnessing the dye polluted water and dye collection in the chemical factory
A new technology for harnessing the dye polluted water and dyecollection was developed. It is based on the enhanced evaporation by using solar, wind, and air temperature energy and additional heat-electric energy. It consists of four parts: (1) evaporation carrier system (evaporation carrier and frame for evaporation carrier) for polluted water; (2) polluted water circulating system (pumping-spraying-collecting); (3) heating system; (4) workshop with polluted water reservoir-tanks and rainfall prevention roof. The polluted water was (heated in case necessary) sprayed to the evaporation carrier system and the water was evaporated when it moved in the space and downward along the carrier mainly by using natural (solar, wind, and air temperature energy). In case, when there is no roof for the carrier system, thepolluted water can be stored in the reservoirs (storage volume for about 20 days). The first 10-25 mm rainfall also need to be stored in the reservoirs to meet the state standard for discharging wastewater. The dye may be collected at the surface in the reservoir-tanks and the crystallized salt may be collected at the bottom plate. The black-color wastewater released by the factory is no more discharged to the surface water system of Taihu Lake Basin. About 2 kg dye and 200 kg industrial salt may be collected from each tone of the polluted water. The non-pollution production of dye may be realized by using this technology with environmental, economical and social benefits.
作 者： PU Jiang-ping PU Pei-Min HU Chun-hua QIANG Jun-ling PU Jue-xing HUA Ji-kang 作者单位： PU Jiang-ping(PLA Polytechnic University,)PU Pei-Min,HU Chun-hua,QIANG Jun-ling(Nanjing Institute of Geography and Limnology,CAS,)
PU Jue-xing,HUA Ji-kang(H
