Waterpower

Water cycle
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With the waterpower (すいりょく, hydropower hydropower, waterpower),

• It is using potential energy and kinetic energy of the water as power or power to be provided in that way. ^[1]
• "Power of the water." Force [²] of the water (power to be born).

Summary

It is the waterpower is potential energy and kinetic energy of the water ("force") or to use it as power.

I see it historically and use a waterwheel for a mawashi, pumping, and I turn a stone mill, and it has a long history that has been used in letting a mallet move flourishingly, and such a usage is performed even now.

It increased that waterpower is changed to the electricity after the electric use became popular, but it says with "hydraulic power generation" in particular to change to the electricity. The micro hydroelectric generation becomes active recently, too.

Use of waterpower includes the following things.

• A waterwheel (watermill): I change the flow of the water such as rivers to the power and I move a mallet and thresh it and I turn a stone mill and grind it to powder and perform pumping. In addition, I see the use of pumping of the waterwheel worldwide and am often performed for agriculture in a farm village, and pumping is performed in the city called Hammer.
• Waterwheel for the generation
  • Hydraulic power generation： I turn a small-sized impeller by the flow of a brook and the mountain stream (with the small thing) and turn a generator (with the large thing), and the thing which uses a dam together, and turns a large size turbine using a big drop, and generates electricity is common.
  • Pumping-up power generation： I draw water with a pump into the dams in time such as the middle of the night with a little power consumption, and power consumption generates electricity in much time.
  • Ocean current generation : I turn a generator by an ocean current and generate electricity. The tide does not change strength in time, and it is considerably stable, and it is known to the quantity of generation that there is a good point to be stable, and the technology development of the turbine to install underwater is in progress, and embodiment is gradually increasing.
  • Hydroelectric power generation using the tide (with "ebb and flow generation"): I generate electricity using the flow and ebb of tides.

^[3]

The potential energy and the kinetic energy to have of the water on "waterpower" that is the earth were mainly brought from the sun when they traced the source. I can consider approximately 4,000,000,000km the result that moved while water changes into three states (three aspects) by heat to be caused by light of the sun and it which reached the earth from the sun of the distance far, too. The water collecting in the sea or the lake rises in the air by missing, and it pours into the ground in rain and snowy form again. The 降 りそそいたこれらの water becomes the river in the area that a thing is high in positionally and moves to the low place, but there is not it directly and saves the running water of the river into the dam in this process and does it and uses kinetic energy to drift towards the potential energy and a low position. Thermal energy from such sun participates in the ocean current, but the rotation of the earth participates, too; and in the case of ebb and flow of the rotation of the earth, besides, a month and solar gravitation participate, and is slightly complicated.

In any case, it is thought that I can use the energy approximately unlimitedly as far as the earth continues catching the benefit from the sun and is considered to be "the clean energy that there is not of the pollution" because we do not have to worry about the pollution such as carbon dioxide by heat or the radioactive waste in the atomic energy again in such a point of view "to use energy originally to exist naturally". But they may affect the neighboring environment in using energy to have of this water by installing facilities limiting movement of the water including the setting of the dam, and various influence (sedimentation of the earth and sand to the bottom with a decrease in ability for purification of the river and the decrease in dredging power) to depend on this quantity of water for with a downstream water flow change from influence on ecosystem of the waterside with the change of the water flow is seen. Cases of (→ Aswan High Dam which this influence is a matter of degree, but may become the serious environmental problem depending on a scale reference).

In addition, the use of this is possible at various levels by a scale of the quantity of water because the use of the waterpower is studied well for a long time. For example, the facilities which accepted the scale until the hydroelectric power generation using the tide assuming installing it in the river mouth or the straits are performed development, the use of by the small hydroelectric generator which I can install in a flow of the water of the gutter of the roadside of the mountain village and the small flow such as the brook. In addition, the device of the micro hydroelectric generation is commercially available and is sold on the net and, besides, an individual makes handcrafting (own work) and can do setting, use.

Allied item

• Small hydroelectric generation
• Waterwheel
• Waterwheel generator
• Hydraulics (hydraulics)
• Hydraulic power generation
• Hydroelectric power generation using the tide
• Waterwheel for the generation
• Hammer (it is for sightseeing mainly, but a waterwheel pumping up water only by waterpower exists now.)
• Pumping-up power generation
• Hydrodynamics

Footnote

1. ^ Koujien "waterpower"
2. ^ Koujien "waterpower"
3. Is ^; the water as the solvent, using the function as density and the solvent, can get energy in the thing doing for collection, the profit in resources melting into it, but generally they are not called "waterpower".

This item is an unfinished item in conjunction with engineering, the technique. I demand the cooperator who corrects it, and corrects this item (a Portal: technology and industry).

It is acquired by "https://ja.wikipedia.org/w/index.php?title= waterpower &oldid=62713220"

This article is taken from the Japanese Wikipedia Waterpower

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