gas fuel cell is to provide the energy source for the gas actuated tools.
The first fuel cells were invented by Sir William Grove in 1838. The first commercial use of fuel cells came more than a century later following the invention of the hydrogen–oxygen fuel cell by Francis Thomas Bacon in 1932. The alkaline fuel cell, also known as the Bacon fuel cell after its inventor, has been used in NASA space programs since the mid-1960s to generate power for satellites and space capsules. Since then, fuel cells have been used in many other applications. Fuel cells are used for primary and backup power for commercial, industrial and residential buildings and in remote or inaccessible areas. They are also used to power fuel cell vehicles, including forklifts, automobiles, buses, boats, motorcycles and submarines.
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Solve the "white pollution" of plastics from the source of design
Since June 1, 2008, the “plastic limit order†has been officially implemented, and it has been 9 years since then. In addition to the "prosperous" when it was first introduced, the "plastic limit order" seems to have been forgotten in the past 9 years. With the development of the national economy, the "white garbage" headed by plastic packaging bags has become increasingly fierce and has become one of the non-negligible environmental pollution problems in China.
The data shows that millions of plastic bags are used every second in the world, and the total number of plastic bottles discarded each year exceeds 100 million tons; only about 14% of plastic packaging is recycled. China has become the world's largest producer of plastics and the largest country in the production and application of plastic packaging. According to incomplete statistics, plastic packaging accounts for more than 1/3 of the total packaging, ranking first among all packaging materials, and increasing at a rate of more than 5% per year.
How to solve the "white pollution" problem? Combing the current different ideas, including material replacement, application of biodegradable plastic materials, and enhanced recycling and reuse. However, Xiao Bian believes that to solve the problem of “white pollution†at this stage and achieve real “green developmentâ€, Start with the source of packaging design.
Green development is a holistic concept that should take into account the impact of resources and energy consumption, the environment, social development, product application and economics. For example, the application of biodegradable plastic materials, due to technical limitations, the current water, electricity and biological resources used to produce biodegradable plastics far exceeds ordinary plastics. If a general ledger is used, biodegradable plastic materials are used instead of ordinary plastics. The overall impact of the environment and resources is more harmful than good.
In the current China, the circular economy idea of ​​reduction, reuse and resource utilization is the first choice to solve the problem of “white pollutionâ€. To implement circular economy thinking, we must start from the source, that is, we must start from the initial part of packaging design, focus on reduction and recycling in the process of plastic packaging design, through recycling, classification, and recycling. A series of means, the plastic packaging is repeatedly designed and utilized, and the plastic packaging material is given a "second life" by design.
In terms of reduction, the waste of resources and environmental pollution of packaging waste are reduced by maximizing over-packaging, large-scale independent packaging and non-environmental packaging. Specific measures include product standardization, the use of uniform materials to manufacture the same product; minimizing the types of materials used on a packaged product; the use of new technologies should take into account the seamless integration with the original recycling system. Secondly, it is convenient to recycle. One of the important strategies for the green development of plastic packaging in the future is to tell consumers how to properly handle it and make the operation as simple as possible. For example, design a label that is easy for consumers to see, and mark the packaging materials, recycling methods and amounts, and other attributes on the packaging.
In addition, a system of recycling of plastic packaging covering the whole society and all-round should be established, and a scientific and reasonable recycling mechanism involving the participation of the whole people should be further formed. In this way, we can really improve the recycling rate of plastic packaging.