JPH01281301A - Evaporator with preheater - Google Patents
Evaporator with preheaterInfo
- Publication number
- JPH01281301A JPH01281301A JP11107188A JP11107188A JPH01281301A JP H01281301 A JPH01281301 A JP H01281301A JP 11107188 A JP11107188 A JP 11107188A JP 11107188 A JP11107188 A JP 11107188A JP H01281301 A JPH01281301 A JP H01281301A
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- heat source
- preheater
- source fluid
- fluid
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 41
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000006200 vaporizer Substances 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、蒸発器に供給する被加熱液を、蒸発器にお
ける加熱に先立って予熱するための予熱器を具備した蒸
発装置に関するもので、例えば熱回収装置における作動
流体の予熱に利用することができる。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an evaporator equipped with a preheater for preheating a liquid to be heated to be supplied to the evaporator before heating it in the evaporator. For example, it can be used to preheat working fluid in a heat recovery device.
蒸発器は液体を加熱して蒸気に変えるためのもので、液
体を熱源流体との間で熱交換させ、蒸発の潜熱を熱源流
体から奪うことによって蒸発させる。そして、一般に、
同じ熱源流体でもって、より高温の蒸気を得るために予
熱がおこなわれる。この場合、予熱用の熱源を蒸発器の
熱源と共用することが考えられる。An evaporator is used to heat a liquid and turn it into vapor.The liquid is evaporated by exchanging heat with a heat source fluid and removing the latent heat of evaporation from the heat source fluid. And in general,
With the same heat source fluid, preheating is performed to obtain higher temperature steam. In this case, it is conceivable to share the heat source for preheating with the heat source for the evaporator.
すなわち、第２図に示すように、通常蒸発温度Ｔ４は
（熱源流体の出口温度Ｔｚ）−Δ’ｒｐで与えられると
ころ、予熱をおこなうことによって、第３図に示すよう
に、熱源流体の蒸発器出口温度がＴ２からＴ 、／に上
がるため、それに対応して蒸発温度をＴ４からＴ ４／
まで高くすることができる。That is, as shown in Fig. 2, the evaporation temperature T4 is normally given by (outlet temperature Tz of the heat source fluid) - Δ'rp, but by performing preheating, the evaporation temperature of the heat source fluid increases as shown in Fig. 3. Since the vessel outlet temperature increases from T2 to T4/, the evaporation temperature correspondingly increases from T4 to T4/
It can be raised up to.
しかしながら、熱源流体に対して蒸発器と予熱器を単に
直列に接続すると、熱源流体の圧力損失が（蒸発器にお
ける損失＋予熱器における損失）となってしまう。However, if the evaporator and preheater are simply connected in series with respect to the heat source fluid, the pressure loss of the heat source fluid will be (loss in the evaporator + loss in the preheater).
そこでこの発明の目的は、圧力損失の上昇を伴わない予
熱を可能ならしめることである。Therefore, an object of the present invention is to enable preheating without increasing pressure loss.
この発明は、熱源を蒸発器と共用する予熱器を具備した
蒸発装置において、熱源流体を、蒸発器および予熱器に
シリーズに流すのでなく、それぞれに分流させてパラレ
ルに供給するようにした。In an evaporator equipped with a preheater that shares a heat source with the evaporator, the present invention is configured such that the heat source fluid is not passed through the evaporator and the preheater in series, but is split into separate streams and supplied in parallel.
熱源流体は蒸発器の上流側でわかれてそれぞれ蒸発器お
よび予熱器へ供給される。したがって、熱源流体の圧力
損失は（１発器における損失または予熱器における損失
）となり、予熱器を付設することによる圧力損失の増大
を避けることができる。さらに、熱源流体の流量を一定
とすれば、分流させることにより蒸発器および予熱器に
おける流量が低下し、圧力損失は一層減少する。The heat source fluid is separated upstream of the evaporator and supplied to the evaporator and preheater, respectively. Therefore, the pressure loss of the heat source fluid becomes (a loss in one generator or a loss in a preheater), and an increase in pressure loss due to the provision of a preheater can be avoided. Furthermore, if the flow rate of the heat source fluid is constant, dividing the flow reduces the flow rate in the evaporator and preheater, further reducing the pressure loss.
以下、図面に示す実施例について説明する。 The embodiments shown in the drawings will be described below.
第１図は予熱器付き蒸発装置を含む８回収装置を示して
いる。この熱回収装置は、フロン等の作動流体を用い、
例えば工場やプラントからの温排水であるとか地熱水等
を熱源として、ランキンサイクルに基づき作動する。す
なわち、熱源流体との熱交換によって作動流体を蒸発せ
しめる蒸発器（２）と、この蒸発器（２）で発生した高
温・高圧の作動流体蒸気によって回転駆動するようにし
た蒸気原動機（４）と、仕事を終えて蒸気原動機（４）
から排出される低圧の作動流体蒸気を冷却して凝縮せし
める凝縮器（６）と、凝縮した作動流体を再び蒸発器（
２）へ送る循環ポンプ（８）とを閉ループに接続して構
成されており、蒸気原動機（４）の出力軸を発電機（１
０）と連結させである。FIG. 1 shows an eight recovery system including an evaporator with a preheater. This heat recovery device uses a working fluid such as Freon,
For example, it operates based on the Rankine cycle using heated wastewater from factories or plants, geothermal water, etc. as a heat source. That is, an evaporator (2) that evaporates a working fluid through heat exchange with a heat source fluid, and a steam motor (4) that is driven to rotate by the high-temperature, high-pressure working fluid vapor generated in the evaporator (2). , Steam engine after work (4)
The condenser (6) cools and condenses the low-pressure working fluid vapor discharged from the evaporator (6), and the condensed working fluid is returned to the evaporator (6).
The output shaft of the steam motor (4) is connected to the generator (1) in a closed loop.
0).
蒸発器（２）の機能は、液相の作動流体に熱源流体から
蒸発の潜熱を奪わせ、高温・高圧の作動流体蒸気を発生
させることにある。そして、このときの作動流体の蒸発
温度が高いほど熱回収装置の出力は太き（なる。The function of the evaporator (2) is to cause the liquid-phase working fluid to remove latent heat of evaporation from the heat source fluid, thereby generating high-temperature, high-pressure working fluid vapor. The higher the evaporation temperature of the working fluid at this time, the greater the output of the heat recovery device.
予熱器（１２）は蒸発器（２）に供給される作動流体を
予熱して、蒸発器（２）における蒸発温度を高める働き
をする。The preheater (12) serves to preheat the working fluid supplied to the evaporator (2) to increase the evaporation temperature in the evaporator (2).
予熱器（１２）はその熱源を蒸発器（２）と共用するが
、熱源流体の供給路（１４）は参照符号（１４ａ）（１
４ｂ）で示すように蒸発器（２）の上流側で分かれてお
り、蒸発器（２）および予熱Ｗ （１２）にそれぞれ熱
源流体がパラレルに供給される。このため、熱源流体の
圧力損失は、蒸発器における損失または予＃！）器にお
ける損失のうちどちらか大きい方となる。すなわち、仮
に蒸発器（２）および予熱器（１２）における圧力損失
がどちらもＸｋｔ／ａｄとすると、両者に熱源流体をシ
リーズに流すときは圧力損失は２瞳／−となるが、図示
のようにパラレルに流すときはｌｋｔ／ｃｄにしかなら
ない。The preheater (12) shares its heat source with the evaporator (2), but the heat source fluid supply path (14) has the reference number (14a) (1).
As shown in 4b), they are separated on the upstream side of the evaporator (2), and the heat source fluid is supplied in parallel to the evaporator (2) and preheating W (12), respectively. Therefore, the pressure loss of the heat source fluid is equal to the loss in the evaporator or the loss in the evaporator. ) is the larger of the losses in the vessel. In other words, if the pressure loss in the evaporator (2) and preheater (12) is both Xkt/ad, when the heat source fluid flows through both in series, the pressure loss will be 2 pupils/-, but as shown in the figure When streaming in parallel, it becomes only lkt/cd.
さらに、熱源流体の流量を一定とすれば、分流させるこ
とによって蒸発器（２）および予熱器（１２）における
熱源流体の流量は減少するので、圧力損失がいっそう低
減することになる。Furthermore, if the flow rate of the heat source fluid is kept constant, the flow rate of the heat source fluid in the evaporator (2) and preheater (12) is reduced by dividing the flow, so that the pressure loss is further reduced.
このことは、熱源流体を豊富に確保できる場合にはとり
わけ有利である。すなわち、熱源流体が豊富であれば、
圧力損失が低減する分流量を増やすことによって、圧力
損失は従来と同じでも発電量を増やして所内率を低くお
さえることができるからである。なお、ここに、所内率
とは、当該システムの所要動力に対する発電量の割合を
いう。This is particularly advantageous if the heat source fluid is available in abundance. In other words, if the heat source fluid is abundant,
This is because by increasing the branch flow rate that reduces pressure loss, it is possible to increase the amount of power generation and keep the on-site efficiency low even if the pressure loss remains the same as before. Note that here, the on-site rate refers to the ratio of the amount of power generation to the required power of the system.
以上説明したように、この発明によれば、予熱器を付設
しても圧力損失の増大を招くことがないため、予熱によ
る出力アップを有効に図ることができるほか、当該蒸発
装置を使用するシステムの所内率をおさえる上で掻めて
有利である。As explained above, according to the present invention, even if a preheater is attached, there is no increase in pressure loss, so it is possible to effectively increase the output by preheating, and the system using the evaporator This is advantageous in reducing the in-house ratio.
第１図はこの発明の実施例たる蒸発装置を含んだ熱回収
装置のブロック線図、
第２図は予熱器を具備しない蒸発器における流体の温度
変化を示す線図、
第３図は予熱器を付設した蒸発器における流体の温度変
化を示す線図である。
２：蒸発器
１２：予熱器
１４．１４ａ、 １４ｂ ：加熱流体の供給路時 許
出 願 人 株式会社 日阪製作所第１図Fig. 1 is a block diagram of a heat recovery device including an evaporator according to an embodiment of the present invention, Fig. 2 is a diagram showing fluid temperature changes in an evaporator without a preheater, and Fig. 3 is a diagram showing a preheater. It is a diagram showing the temperature change of the fluid in the evaporator attached. 2: Evaporator 12: Preheater 14.14a, 14b: Heating fluid supply path
Applicant Hisaka Manufacturing Co., Ltd. Figure 1
Claims (1)
置において、熱源流体を蒸発器と予熱器とに分流させて
供給することにより、出力を下げることなく熱源流体の
圧力損失を低下させるようにしたことを特徴とする予熱
器付き蒸発装置。(1) In an evaporator equipped with a preheater that shares the heat source with the evaporator, the pressure loss of the heat source fluid is reduced without reducing output by dividing and supplying the heat source fluid to the evaporator and preheater. An evaporator with a preheater characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63111071A JP2740802B2 (en) | 1988-05-07 | 1988-05-07 | Evaporator with preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63111071A JP2740802B2 (en) | 1988-05-07 | 1988-05-07 | Evaporator with preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01281301A true JPH01281301A (en) | 1989-11-13 |
| JP2740802B2 JP2740802B2 (en) | 1998-04-15 |
Family
ID=14551644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63111071A Expired - Fee Related JP2740802B2 (en) | 1988-05-07 | 1988-05-07 | Evaporator with preheater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2740802B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60138212A (en) * | 1983-12-26 | 1985-07-22 | Toshiba Corp | Geothermal steam binary cycle plant |
-
1988
- 1988-05-07 JP JP63111071A patent/JP2740802B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60138212A (en) * | 1983-12-26 | 1985-07-22 | Toshiba Corp | Geothermal steam binary cycle plant |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2740802B2 (en) | 1998-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |