TWI713451B - 洋流發電系統 - Google Patents
洋流發電系統 Download PDFInfo
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- TWI713451B TWI713451B TW104118274A TW104118274A TWI713451B TW I713451 B TWI713451 B TW I713451B TW 104118274 A TW104118274 A TW 104118274A TW 104118274 A TW104118274 A TW 104118274A TW I713451 B TWI713451 B TW I713451B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/08—Machine or engine aggregates in dams or the like; Conduits therefor, e.g. diffusors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/08—Tide or wave power plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/141—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/141—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector
- F03B13/144—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector which lifts water above sea level
- F03B13/145—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector which lifts water above sea level for immediate use in an energy converter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
一種洋流發電系統,係利用引水道將洋流引到高於海平面的蓄水池來發電。
Description
本發明係關於一種洋流發電系統,特別是關於一種岸置的洋流發電系統。
現今的洋流發電系統,多是將一水渦輪發電機沉入海中加以錨定,利用洋流帶動扇葉轉動來發電,再用電纜將電力傳送至岸上。此種系統的水渦輪發電機必須防水,並且在水中與電纜線相接,將電力傳回岸上。可以想見,此種水渦輪發電機必須對抗強大的深水水壓、水流以及海水腐蝕,因此造價不低,而且維護不易,如果發生故障,維修非常困難。因此基於成本與技術的限制,洋流發電產生很大的瓶頸。
因此,如何設計一種洋流發電系統,不需要配備高成本的深水發電機,但是又能夠利用洋流來發電,則可以大大降低目前的洋流發電成本,而且使發電機組的安裝及後續的維修更容易,使洋流發電更加可行。
有鑑於上述課題,本發明之目的為提供一種不需將發電機沉入深海中的洋流發電系統,以降低整個系統的製造及維護成本。
於一實施例,請參考圖1,依據本發明之一種洋流發電系統中,具有一引水道(Inlet Pipe),將洋流的水流引到岸邊的蓄水池,洋流之水流在到達岸邊的蓄水池時,其動能會變成位能,以類似湧泉的方式從引水道冒出海平面,因此蓄水池的水位會比海平面高,其高度主要由洋流的流速決定,就如動能轉位能的公式所示:1/2*MV2=Mgh,也就是每秒3公尺的流速大概可以造成比海平面高0.46公尺的湧泉,蓄水池於是可以獲得比海平面高的水位,蓄水池另外有一出水道(Outlet Pipe)連接到海裡,而發
電機就安裝在出水道的地方,當蓄水池的水流回海裡時,即可帶動發電機發電,如圖1所示,本發明將引水道入口面對海流,並將海流的動壓轉換成蓄水池的水位高度,引水道與蓄水池之結構相當於一個大型的L形簡單皮托管(Simple Pitot Tube),當皮托管入口面對海流時,其尾端垂直柱內高於海平面的水位即為測得的海流動壓值,與皮托管原理相同,只要引水道面對海流的動壓,就必定會使蓄水池的水位高於海平面,上述0.46公尺等於可量得的海流之動壓,此時海流的動能完全轉成位能,引水道內水已經不流動且摩擦損為零,因此0.46公尺等於是摩擦損為零時的總水頭,由於水可由水位較高的蓄水池流回水位較低的海裡,因此出水道可放水發電,放水時蓄水池水位下降又使海水由引水道再度被海流推入蓄水池,此時水在引水道內流動會產生摩擦損,因此0.46公尺總水頭在扣掉摩擦水頭後,剩餘的水頭即為可用以發電的水頭。
如果要增加引水量,引水道的入口可以設計成喇叭狀,或是讓一個引水道具有多個入水口來收集洋流,如此一來就可以提高引水道中海水的流速,由於洋流是一種大面積的定速水流,因此當多個入水口都同時受到洋流推動時,可以有效的提高該引水道內的水流量與流速,也就是可以提高蓄水池的進水量,進而提高發電量。如前所述,可將引水道的入口設計成喇叭狀來集中海流並提升流速(如圖1、圖2所示引水道1的喇叭狀入口),如同導風罩(Windmill Concentrator)可以提高風力發電機轉速的原理一樣,依入口大小而定,假設可使引水道內的流速提升為原本海流流速的兩倍時,依據前述動能轉位能的公式所示:1/2*MV2=Mgh,兩倍的流速V可以創造四倍的水池水位h,亦即可利用的水位(水頭)增加為四倍,在扣掉水管內流動時產生的摩擦損失水頭後,最終剩餘的可發電水頭可以被有效提升。再如前所述,利用多個入水口(多管)來收集洋流,總流量可隨著增加的水管數而倍增,也可有效提高發電量。因此,擴大引水道入口以提升流速並藉以提高水位,以及使用多管來收集洋流增加流量,皆可以有效降低摩擦損的影響並提高剩餘可發電水頭、提高發電量。
於另一實施例,請參考圖2,依據本發明之一種洋流發電系統中,與前例類似,但是蓄水池被安裝在接近洋流附近的海平面上,該蓄
水池可以用固定樁打入海床固定位置,或是做成浮水式使其可隨海平面高低浮動,當引水道將洋流引入蓄水池後,同樣經由出水道的發電機發電後流回大海,所產生的電力則利用海底電纜傳回岸上。圖2的蓄水池係安裝於最接近洋流處或是直接安置在洋流上方水面,引水道被直接安裝於蓄水池下方,由於蓄水池接近洋流,因此引水道長度可以縮短,所以引水道的摩擦損可以減少,再加上如圖2所示引水道1的喇叭狀入水口可提升流速,提高水位(水頭),相對之下摩擦損影響變更小,收集到的可用水頭會比摩擦損大很多,可大幅增加扣掉摩擦損後的剩餘可發電水頭,若再使用多管來收集洋流,可再大幅提高發電量。因此將蓄水池放在洋流附近以便縮短水管來降低摩擦損,使用喇叭狀入水口來增速並提高水位,增加水管數目來提高流量,這些方法皆有助於使本發明能更有效引入海流發電。
承上所述,本發明係將洋流引導至水面上,將洋流的動能轉成位能,再轉成電能,以便發電機可以安裝在水面上或是淺水處,不僅安裝成本較低,並且維護容易,水面下主要的設施為引水道與出水道,幾乎可以長期使用不須任何維護,若有必要清潔水道內的壁面時,還可以使用遙控機器人入內清潔,因此與其他的洋流發電系統比較,本發明具有低成本、抗腐蝕、維護容易、可長期使用的優點,另外蓄水池更可以調節出水量來控制發電量,所以更具有穩定發電的優點。
1:引水道、入水口
2:蓄水池
3:出水道、出水口
4:發電機
5:洋流
6:海洋、海平面
7:蓄水池之海水、蓄水池水位
8:陸地、海床
9:蓄水池支架
圖1為本發明之第一實施例之示意圖。
圖2為本發明之第二實施例之示意圖。
以下將參照相關圖式,說明本發明複數實施例之一種洋流發電系統,其中相同元件以相同符號表示。
如圖1所示,為本發明之第一實施例之洋流發電系統,係包含引水道1、蓄水池2、出水道3及發電機4。引水道1之入水口置於洋流5經過的地方,收集洋流後引流至蓄水池2(蓄水池2安裝於陸地8上),
使蓄水池2的儲水位7高於海平面6,蓄水池的水再經出水道3流回海中,發電機4利用流過出水道3的海水來發電。
如圖2所示,為本發明之第二實施例之洋流發電系統,與第一實施例不同處在於蓄水池2係安裝在海上接近洋流5的地方,利用支架9固定其位置。蓄水池2可以用類似浮式船塢的方式浮在海面上,而支架9也可以改用鏈條將蓄水池2以錨定的方式固定其位置。
承上所述,本發明之洋流發電系統僅利用引流的方式將洋流引至海面上,並將其動能轉成位能,然後再轉成電能,不需要高成本的水下渦輪發電機,具有低成本、耐用、易維護等優點。
以上所述僅為舉例性,而非為限制性者。任何未脫離本發明之精神與範疇,而對其進行之等效修改或變更,均應包括於後附之申請專利範圍中。
1‧‧‧引水道、入水口
2‧‧‧蓄水池
3‧‧‧出水道、出水口
4‧‧‧發電機
5‧‧‧洋流
6‧‧‧海平面
7‧‧‧蓄水池水位
8‧‧‧陸地、海床
Claims (3)
- 一種洋流發電系統,包含:一引水道,為具有至少一入水口之管狀水道,該入水口安裝於海面下一洋流通過之處收集洋流,將該洋流引至海面;一蓄水池,安裝於海面上,其蓄水位高於海平面,底部連接該引水道出口,儲存由該引水道引入的海水,該引水道利用簡單皮托管原理將海平面下洋流的動能轉成高於海平面水位的位能,並將高於海平面水位的海水儲存於蓄水池內;一出水道,具有一低於海平面的出水口,其入口連接該蓄水池並且在蓄水池的儲水位高於海平面後,將蓄水池中的海水引流回海中;以及一發電機,置於該出水道,利用流過的海水發電。
- 如申請專利範圍第1項所述之洋流發電系統,其中該蓄水池係安裝於海岸邊。
- 如申請專利範圍第1項所述之洋流發電系統,其中該該蓄水池係安裝於接近該洋流之海平面上。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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TW104118274A TWI713451B (zh) | 2015-06-05 | 2015-06-05 | 洋流發電系統 |
US15/172,153 US20160356261A1 (en) | 2015-06-05 | 2016-06-03 | Ocean current power generation system |
JP2016111650A JP6799948B2 (ja) | 2015-06-05 | 2016-06-03 | 海流発電システム |
US16/377,140 US20190234369A1 (en) | 2015-06-05 | 2019-04-05 | Ocean current power generation system |
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TW104118274A TWI713451B (zh) | 2015-06-05 | 2015-06-05 | 洋流發電系統 |
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TW201643314A TW201643314A (zh) | 2016-12-16 |
TWI713451B true TWI713451B (zh) | 2020-12-21 |
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CN107489587A (zh) * | 2017-09-25 | 2017-12-19 | 李晓亮 | 合口式水浪发电机 |
FR3132329B1 (fr) * | 2022-02-02 | 2024-01-05 | Jean Emile Joseph Abadie | Dispositif hybride marémoteur, houlomoteur, générateur d'énergie électrique |
NO347980B1 (en) * | 2022-09-05 | 2024-06-03 | Orca Connex As | System and method for delivering cooling water to submerged data processing equipment |
Citations (2)
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CN2711233Y (zh) * | 2004-06-24 | 2005-07-20 | 文立团 | 沿河引水发电装置 |
CN103046519A (zh) * | 2012-12-12 | 2013-04-17 | 李宏江 | 一种海浪压水发电站 |
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US4078871A (en) * | 1974-09-16 | 1978-03-14 | Perkins Jr Clifford A | Sea wave energy conversion |
US4364228A (en) * | 1980-07-25 | 1982-12-21 | Eller J David | Hydraulic turbine system with siphon action |
US4698516A (en) * | 1985-04-02 | 1987-10-06 | Thompson Douglas A | Hydro-electric power plant |
JP2012112244A (ja) * | 2009-02-23 | 2012-06-14 | Masahiro Ikemura | 低水位差大流量発電装置 |
GB201002241D0 (en) * | 2010-02-10 | 2010-03-31 | Demontmorency David G | Very low head (VLHS) packaged small hydro station |
US9261068B2 (en) * | 2013-01-16 | 2016-02-16 | Yaser K. Barakat | Hydroelectric power generating system |
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2015
- 2015-06-05 TW TW104118274A patent/TWI713451B/zh active
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2016
- 2016-06-03 JP JP2016111650A patent/JP6799948B2/ja active Active
- 2016-06-03 US US15/172,153 patent/US20160356261A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2711233Y (zh) * | 2004-06-24 | 2005-07-20 | 文立团 | 沿河引水发电装置 |
CN103046519A (zh) * | 2012-12-12 | 2013-04-17 | 李宏江 | 一种海浪压水发电站 |
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TW201643314A (zh) | 2016-12-16 |
JP2017002905A (ja) | 2017-01-05 |
US20160356261A1 (en) | 2016-12-08 |
JP6799948B2 (ja) | 2020-12-16 |
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