第1个回答 2007-05-27
Hydraulic electrogenerating
The water not only may directly by the human use, it or the energy
carrier. The solar energy actuates the Earth water cycle to continue
to carry on, surface water flowing is an important link, in the
dropping variance big, the current capacity big area, the hydro-energy
resources is rich. Reduces day after day along with the fossil fuel,
the hydro energy is count for much, the prospect broad substitution
resources. At present in the world the hydraulic electrogenerating
mainly refers to the water-turbine generator set electricity
generation. Speaking of the entire world, had the quite big scale. But
the generalized hydraulic electrogenerating also includes the energy
which using water transportation and so on rivers, tide, wave as well
as swell moves produces to generate electricity, but these forms
hydraulic electrogenerating also are at the start stage, waits for the
further research, the development and the use. Without doubt their
prospect also is extremely considerable.
第3个回答 2007-06-03
The water not only may directly by the human use, it or the energy
carrier. The solar energy actuates the Earth water cycle to continue
to carry on, surface water flowing is an important link, in the
dropping variance big, the current capacity big area, the hydro-energy
resources is rich. Reduces day after day along with the fossil fuel,
the hydro energy is count for much, the prospect broad substitution
resources. At present in the world the hydraulic electrogenerating
mainly refers to the water-turbine generator set electricity
generation. Speaking of the entire world, had the quite big scale. But
the generalized hydraulic electrogenerating also includes the energy
which using water transportation and so on rivers, tide, wave as well
as swell moves produces to generate electricity, but these forms
hydraulic electrogenerating also are at the start stage, waits for the
further research, the development and the use. Without doubt their
prospect also is extremely considerable.
第4个回答 2007-06-05
Human water used Said to the person that, the water besides in vivo need, inother many aspects also is essential. The water uses in clean, to takea bath, the cooking and drinks uses, to use in the central heatingsystem as well as the elimination waste. Each modern architecture allis loaded with the different function water supply system whichmutually separates. If in the right chart, the blue color and redexpresses coldly, the hot running water, the orange red expressioncentral heating system water, the green expression drainage systemwater. The humanity consumes the water, 近百年来 had the very big growth.The United Nations suggested may accept each person of daily waterused 75 kilograms achievement the lowest standard, but industrialnation each person of daily water used amounts to 300 ~ 500 kilograms.Biggest water consumption is not the family water used, but is theprocess water. Fishery production The primitive fishery mainly depends on in the fishing fornatural water body the natural biology, the modern fishery take theartificial cultivation as the important characteristic. The fishery development enormously raised the lives of the peoplelevel, was the shopping basket project has made the contribution, butalso was facing some crises: (1) sea fishery excessively fishing for,creates the fishery resources the serious destruction; (2) excessivelybreeds the food grass fish in the grass lake, causes the submarinevegetation vanishing, destroys the lake ecological equilibrium,affects the fishery development; (3) very many cultivations area, inorder to the gain in yield, puts in excessive food to the lake waterin, even introduces the sewage, the fertilizer, creates the lake富营养化, causes to appear the red tide. The above condition allis the fishery suicide behavior without doubt. The process water water is the industry blood, in the world nearlydoes not have one industry not water used. The process water may divide into four kinds. (1) cools the waterused, with carries off the production equipment unnecessary quantityof heat, nearly occupies all process water 70%; (2) the airconditioning water used, uses in to adjust in the room the temperatureand the humidity, in the textile industry, the electronic instrumentindustry, in the precision machine tool production, must apply; (3)the product water used, directly becomes the product a part or onlytakes in the production process one kind of medium; (4) cleans andother water useds. The process water holds the very great proportion in the waterresource distribution, the development saves water the industry alsois saves the water resources the climax. Goods traffic The water transportation is since the ancient times theimportant transportation, the transport mode, in particular beforeairplane invention, surmounts the ocean the contact, does not have oneis not depends on the shipping to complete. From Zheng He the Westernworld, discovered the Americas new continent to China's Grand Canal漕运, all is the world famous shipping event. In a Pure Brightnessthe river chart, had reflected the same year shipping was how busy anddeveloped. The shipping is opposite to other transport modes, has invests, thetransport expense few low, slightly pollutes, the transportationamount major characteristic, but the shortcoming is the speed is low.Along with the economical development, cargo circulation between thelocal gradually increases, although other ways rapidly are developing,but the shipping vital role still will be noticeable. Water conservation electricity generation The water not only may directly by the human use, it or theenergy carrier. The solar energy actuates the Earth water cycle tocontinue to carry on, surface water flowing is an important link, inthe dropping variance big, the current capacity big area, thehydro-energy resources is rich. Reduces day after day along with thefossil fuel, the hydro energy is count for much, the prospect broadsubstitution resources. At present in the world the hydraulicelectrogenerating mainly refers to the water-turbine generator setelectricity generation. Speaking of the entire world, had the quitebig scale. But the generalized hydraulic electrogenerating alsoincludes the energy which using water transportation and so on rivers,tide, wave as well as swell moves produces to generate electricity,but these forms hydraulic electrogenerating also are at the startstage, waits for the further research, the development and the use.Without doubt their prospect also is extremely considerable.