JPS5948312B2 - Two-phase flow open cycle ocean temperature difference power generation method - Google Patents

Two-phase flow open cycle ocean temperature difference power generation method

Info

Publication number
JPS5948312B2
JPS5948312B2 JP56093245A JP9324581A JPS5948312B2 JP S5948312 B2 JPS5948312 B2 JP S5948312B2 JP 56093245 A JP56093245 A JP 56093245A JP 9324581 A JP9324581 A JP 9324581A JP S5948312 B2 JPS5948312 B2 JP S5948312B2
Authority
JP
Japan
Prior art keywords
phase flow
power generation
temperature difference
generation method
open cycle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP56093245A
Other languages
Japanese (ja)
Other versions
JPS57210174A (en
Inventor
武信 梶川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP56093245A priority Critical patent/JPS5948312B2/en
Publication of JPS57210174A publication Critical patent/JPS57210174A/en
Publication of JPS5948312B2 publication Critical patent/JPS5948312B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
    • F03G7/05—Ocean thermal energy conversion, i.e. OTEC
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Sustainable Development (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Description

【発明の詳細な説明】 本発明は、海洋の表層と深層との温度差を利用して電力
を得る２相流型オ一プンサイクル海洋温度差発電法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a two-phase open cycle ocean thermal power generation method for generating electric power by utilizing the temperature difference between the surface layer and the deep layer of the ocean.

一般に、海洋の表面温水と深層冷水との間の温度差を利
用して、電力等の有効エネルギーに変換する方式は幾つ
か提案されでいる。In general, several methods have been proposed for converting the temperature difference between ocean surface warm water and deep cold water into useful energy such as electric power.

これを大別すると、オープンサイクル海洋温度差発電法
、クローズサイクル海洋温度差発電法及び熱電変換のよ
うな直接発電方式の３つである。Broadly speaking, there are three types of power generation methods: open cycle ocean thermal energy conversion, closed cycle ocean thermal energy conversion, and direct power generation methods such as thermoelectric conversion.

従来、オープンサイクル海洋温度差発電法は、海水その
ものを作動流体とするものであるがら取り扱いが安全且
つ構造的に簡単であるという利点を有するものの、体積
当りのエネルギー密度が小さいため、タービンは大型化
せざるを得ないという欠点があり、■プラント当りの規
模を大きくすることへの制約があった。Conventionally, open-cycle ocean thermal energy conversion has the advantage of being safe and simple to handle since it uses seawater itself as the working fluid, but the energy density per volume is low, so the turbine is large. There were drawbacks such as having to increase the size of the plant, and there were constraints on increasing the scale of each plant.

本発明は、前記の欠点をなくすためになされたもので蒸
発器とタービンの間に２相流発生器を設置し、タービン
２相流タービンを採用することによって、水を作動流体
にした状態で装置の小型化を達成することを目的として
いる。The present invention was made to eliminate the above-mentioned drawbacks, and by installing a two-phase flow generator between the evaporator and the turbine and adopting a two-phase flow turbine, water can be used as the working fluid. The purpose is to achieve miniaturization of the device.

以下、本発明について説明する。The present invention will be explained below.

第１図は本発明のシステム概念図である。FIG. 1 is a conceptual diagram of the system of the present invention.

本発明の構成は、従来のオープンサイクル海洋温度差発
電法では膨大な寸法であった低圧の蒸気タービンの代り
に、２相流発生器及び２相流タービンを装備するもので
ある。The configuration of the present invention is equipped with a two-phase flow generator and a two-phase flow turbine in place of the low-pressure steam turbine, which is enormous in size in the conventional open cycle ocean thermodynamic power generation method.

すなわち、第１図のシステム概念図に示されるように温
海水１は、脱気室２において脱気され、フラッシュまた
は表面を粗面とした構造材上に海水水膜を流下させる液
膜式の蒸発器３により蒸気に一部変えられる。That is, as shown in the system conceptual diagram in Figure 1, warm seawater 1 is degassed in a degassing chamber 2, and a liquid film type system is used in which a film of seawater flows down onto a flash or a structural material with a rough surface. It is partially converted into steam by the evaporator 3.

温度降下した温海水４は排出される。The warm seawater 4 whose temperature has decreased is discharged.

その蒸気は、加速ノズル５と組み合せられ、且つ、凝縮
器９で作られた復水の一部を引き入れられた２相流発生
器６に入る。The steam enters a two-phase flow generator 6 which is combined with an accelerating nozzle 5 and into which a portion of the condensate produced in the condenser 9 is drawn.

２相流発生器６において蒸気の運動エネルギーを用いで
復水の一部を微小液滴群にすると同時に蒸気の運動エネ
ルギーの一部を液滴群に与える。In the two-phase flow generator 6, the kinetic energy of the steam is used to form part of the condensate into a group of minute droplets, and at the same time, part of the kinetic energy of the steam is given to the droplet group.

液滴の混った蒸気すなわち２相流は、体積当りの重量を
増し、体積当りのエネルギー密度を増加させられる。Vapor mixed with droplets, ie, a two-phase flow, has an increased weight per volume and an increased energy density per volume.

その２相流は、ただちに２相流タービン７に導かれ、２
相流タービンブレードに直接衝突させてその運動エネル
ギーを回転運動エネルギーに変え、発電機８を回して電
気出力を外部に与える。The two-phase flow is immediately led to the two-phase flow turbine 7,
The kinetic energy is converted into rotational kinetic energy by directly impinging on the phase flow turbine blades, which turns the generator 8 to provide electrical output to the outside.

仕事を終えた２相流は、凝縮器９に引き込まれ深層冷海
水１０によって復水する。The two-phase flow that has completed its work is drawn into a condenser 9 and condensed with deep cold seawater 10.

復水の一部は、再循環ポンプ１１により２相流発生器６
へ戻される。A part of the condensate is transferred to a two-phase flow generator 6 by a recirculation pump 11.
be returned to.

残りの復水は、淡水源としで、他の用途に利用される。The remaining condensate is used as a source of fresh water for other purposes.

復水した淡水の温度は低いので、２相流発生器において
液滴を確実に且つ容易に作れるようにし、また、熱的損
失を少なくしている。The low temperature of the condensed fresh water ensures reliable and easy formation of droplets in the two-phase flow generator and reduces thermal losses.

以上述べたように、従来のオープンサイクル海洋温度差
発電法の欠点であった大型の低圧蒸気り−ビンを使用せ
ず、蒸気とシステムの内部で作られた復水とを用いて２
．相流を作り、体積当りのエネルギー密度を増加させる
ことにより、タービン寸法を従来のタービン寸法の３４
〜％程度に小型化することができる。As mentioned above, instead of using a large low-pressure steam bottle, which was a drawback of the conventional open cycle ocean thermodynamic power generation method, the system uses steam and condensate produced inside the system.
．． By creating a phase flow and increasing the energy density per volume, turbine dimensions can be reduced to 34 mm from conventional turbine dimensions.
The size can be reduced to about ~%.

そのため、従来のオープンサイクル海洋温度差発電法の
規模に関する上限を大巾に取り除くことができると共に
装置全体の小型化が可能となる。Therefore, the upper limit on the scale of the conventional open cycle ocean temperature difference power generation method can be largely removed, and the entire device can be downsized.

本発明による２相流型オ一プンサイクル海洋温度差発電
法は、発電システムを格納する海洋構造体の寸法をこれ
までのものに比較して小さくでき、そのため係留設備が
容易になるという波及効果がある。The two-phase flow open cycle ocean temperature difference power generation method according to the present invention has the ripple effect that the dimensions of the offshore structure that houses the power generation system can be made smaller compared to conventional ones, making mooring equipment easier. There is.

本発明の採用による効果は、タービン部のみならず、全
体システムの建設費の価格を下げるという経済性を有し
、海洋温度差発電技術及び海洋温度差発電プラント建設
費に係る経済面に寄与するところは大きいものがある。The effect of adopting the present invention is that it is economical in that it reduces the construction cost not only of the turbine part but also of the entire system, and contributes to the economic aspects related to the ocean temperature difference power generation technology and the construction cost of the ocean temperature difference power generation plant. There is something big there.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明のシステム概念図である。 図中、１は温海水、２は脱気室、３は蒸発器、４は排温
海水、５は加速ノズル、６は２相流発生器、７は２相流
タービン、８は発電機、９は凝縮器、１０は深層冷海水
、１１は再循環ポンプである。FIG. 1 is a conceptual diagram of the system of the present invention. In the figure, 1 is warm seawater, 2 is a degassing chamber, 3 is an evaporator, 4 is exhaust warm seawater, 5 is an acceleration nozzle, 6 is a two-phase flow generator, 7 is a two-phase flow turbine, 8 is a generator, 9 is a condenser, 10 is deep cold sea water, and 11 is a recirculation pump.

Claims (1)

【特許請求の範囲】[Claims] １ 温海水から生成された蒸気の運動エネルギーの一部
と復水の一部を用いて２相流化し、前記温海水と復水の
一部から生成された２相流を作動流体として体積当りの
エネルギー密度を増加させ、回転運動エネルギーに変え
ることを特徴とする２相流型オ一プンサイクル海洋温度
差発電法。1 A part of the kinetic energy of the steam generated from warm seawater and a part of the condensate are used to create a two-phase flow, and the two-phase flow generated from the warm seawater and a part of the condensate is used as a working fluid per volume. A two-phase open cycle ocean temperature difference power generation method characterized by increasing the energy density of water and converting it into rotational kinetic energy.
JP56093245A 1981-06-17 1981-06-17 Two-phase flow open cycle ocean temperature difference power generation method Expired JPS5948312B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56093245A JPS5948312B2 (en) 1981-06-17 1981-06-17 Two-phase flow open cycle ocean temperature difference power generation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56093245A JPS5948312B2 (en) 1981-06-17 1981-06-17 Two-phase flow open cycle ocean temperature difference power generation method

Publications (2)

Publication Number Publication Date
JPS57210174A JPS57210174A (en) 1982-12-23
JPS5948312B2 true JPS5948312B2 (en) 1984-11-26

Family

ID=14077118

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56093245A Expired JPS5948312B2 (en) 1981-06-17 1981-06-17 Two-phase flow open cycle ocean temperature difference power generation method

Country Status (1)

Country Link
JP (1) JPS5948312B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GT199500016A (en) * 1994-04-15 1996-10-02 OCEAN THERMAL ENERGY CONVERSION SYSTEM
CN110821769B (en) * 2019-10-23 2021-03-30 中海石油(中国)有限公司 Ocean temperature difference energy system pump flow optimization control method and system

Also Published As

Publication number Publication date
JPS57210174A (en) 1982-12-23

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