1. Tide Energy
李嘉麒

2. What is tide energy？ The regular change of the gravity
The regular transformation of the seawater level
Potential energy + Kinetic energy
Tide energy

3. advantages
Renewable and clean
regularity
abundant

4. The situation in china Geographically uneven distribution
The east China sea has the largest coastal tidal range, followed by the south China sea and bohai sea
Qiantang river owns the richest estuarine tide energy(河口潮汐能), followed by the estuary of the Yangtze river. The following are the estuaries of Zhujiang, Jinjiang and Minjiang
In terms of area, tide energy is mainly distributed along the east coast of China

5. How tidal power turns to electricity
The water flows into the reservoir when the water level rises
The water comes out during the ebb
The generator converts the potential energy and kinetic energy of water into electricity

6. Tidal power energy station1
单库单向型 2
单库双向型 3
双库连续发电型

7. 1.单库单向型 feature only one reservoir and only works during the ebb
advantage
simple device and low investment
disadvantage
low utilization of tidal power and discontinuity of power generation

8. 2.单库双向型 feature it can work during the flood and ebb tide advantage
high utilization
disadvantage
high investment

9. 涨潮

10. 退潮

11. 3.双库单向型 feature two reservoirs advantage generate continuously
disadvantage
high investment and small water level range

12. （a） When the seawater level is between the level of high level reservoir and low level reservoir, two gates are all closed.
（b）When the seawater level is higher than the level of high level reservoir, open the intake gate and close the other.

13. （c）This process is the same as the first one .
（d）When the seawater level is lower than the level of the low level reservoir, close the intake gate and open the other.

14. 世界主要潮汐电站

15. Tidal power station, Wenling, Zhejiang

16. Rance tidal power station, France

17. Tidal power station in Annapolis, Canada

18. Thank you！