JPS60144594A - Waste heat recovery device - Google Patents
Waste heat recovery deviceInfo
- Publication number
- JPS60144594A JPS60144594A JP44784A JP44784A JPS60144594A JP S60144594 A JPS60144594 A JP S60144594A JP 44784 A JP44784 A JP 44784A JP 44784 A JP44784 A JP 44784A JP S60144594 A JPS60144594 A JP S60144594A
- Authority
- JP
- Japan
- Prior art keywords
- vapor
- lubricating oil
- expander
- supplied
- flon
- 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.)
- Pending
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 239000002918 waste heat Substances 0.000 title abstract description 4
- 239000010687 lubricating oil Substances 0.000 claims abstract description 32
- 239000003921 oil Substances 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 24
- 239000002351 wastewater Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/06—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using mixtures of different fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
(1)
本発明は工場r排出台れる温排水等を利用して例えば発
電を行う排熱回収装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (1) The present invention relates to an exhaust heat recovery device that generates power, for example, by using heated waste water from a factory discharge stand.
イ、従来例 。B. Conventional example.
、 例えば工場で排出される温排水等を利用する小温度
差利用のランキンサイクルによって動力回収を行ない、
例えば発電を行なう時には、従来第1図に示すような排
熱回収装置が用いられている。図中(1)は温排水等の
熱源により作動流体となる倒木ば70ンを加熱、蒸発さ
せるための蒸発器、(2)は蒸発器(1)内で蒸発した
フロン蒸気によって回転するタービン、(3)はタービ
ア (2)の出力軸に連結された発電機である。(4)
はタービン(2)から排出されたフロン蒸気を凝縮する
ための凝縮器であり、当該凝縮器(4)には冷却水が供
給される。、(5)はフラン牽蒸発器(1)、タービン
(2)及び凝縮器(4)間で循環させるためのポンプで
ある。For example, power is recovered using the Rankine cycle, which uses small temperature differences using heated wastewater discharged from factories.
For example, when generating electricity, an exhaust heat recovery device as shown in FIG. 1 is conventionally used. In the figure, (1) is an evaporator for heating and evaporating 70 tons of fallen trees that serve as a working fluid using a heat source such as heated waste water, (2) is a turbine that is rotated by the fluorocarbon vapor evaporated in the evaporator (1), (3) is a generator connected to the output shaft of Turbia (2). (4)
is a condenser for condensing the freon vapor discharged from the turbine (2), and cooling water is supplied to the condenser (4). , (5) are pumps for circulating between the furan draft evaporator (1), the turbine (2) and the condenser (4).
上記構成に於いて、熱源となる例えば温排水(2)
により発電を行なうには、温排水を蒸気器(1)に供給
すると同時に凝縮器(4)に冷却水を供給し、この状態
でポンプ(5)を駆動させてフロンを循環させる。する
とポンプ(5)から吐出され、蒸気器(1)に送られた
液状のフロンは、蒸発器(1)内で温排水によって加熱
されフロン蒸気となってタービン(2)に送られる。そ
してフロン蒸気によってタービン(2)が回転し、ター
ビン(2)の出力軸と連結した発電機(3)が回転する
ことにより、発電が行われる。又タービン(2)から排
出されたフロン蒸気は凝縮器(4)に送られ、凝縮器(
4)に供給されている冷却水によって冷却され、凝縮器
(4)内で凝縮した後再びポンプ(5)に戻り、上記動
作が繰返される。In the above configuration, in order to generate electricity using the heat source, for example, heated waste water (2), the heated waste water is supplied to the steamer (1), and at the same time, cooling water is supplied to the condenser (4), and in this state, the pump (5) is driven to circulate the freon. Then, the liquid Freon discharged from the pump (5) and sent to the steamer (1) is heated by heated waste water in the evaporator (1), becomes Freon vapor, and is sent to the turbine (2). The fluorocarbon steam then rotates the turbine (2), which rotates the generator (3) connected to the output shaft of the turbine (2), thereby generating electricity. In addition, the freon vapor discharged from the turbine (2) is sent to the condenser (4).
4), and after condensing in the condenser (4), returns to the pump (5) and the above operation is repeated.
ところが、上記した温排水等の低温度の熱源から動力回
収を行うと、温度差を大きくできないため、フロン蒸気
を充分に加熱することができず、充分な動力回収を行え
ないといった欠点があった。However, when power is recovered from a low-temperature heat source such as the above-mentioned heated wastewater, the temperature difference cannot be made large, so the fluorocarbon vapor cannot be sufficiently heated, and sufficient power cannot be recovered. .
(3)
父上記欠点を補うものとして、蒸発器(1)内で蒸発し
たフロン上記を第2の熱交換器に導き、第2の熱交換器
内でフロン蒸気をスーパーヒートさせた後、タービン(
2)に供給することにより、動力回収量を増加させるこ
とが考えられる。尚、第2の熱交換器に用いる熱源とし
ては、前述した蒸発器(1)に供給する熱源を用いても
よいし、又他の熱源を用いてもよい。(3) To compensate for the above-mentioned drawbacks, the fluorocarbons vaporized in the evaporator (1) are led to the second heat exchanger, and after superheating the fluorocarbon vapor in the second heat exchanger, (
2), it is possible to increase the amount of power recovered. As the heat source for the second heat exchanger, the heat source supplied to the evaporator (1) described above may be used, or another heat source may be used.
しかし、上記方法によって動力回収量を増加させようと
すると、次のような問題が生じる。However, when attempting to increase the amount of power recovery using the above method, the following problems arise.
即ち、第2の熱交換器に供給されるフロン蒸気は気体で
あり、当該フロン蒸気をスーパーヒートさせるための第
2の熱交換器も大型のものとなってしまう。従って第1
図に示した蒸発器(1)とタービン(2)との間に第2
の熱交換器を介在させると装置全体が非常に大型化して
しまい、設置スペースの確保が困難になるといった欠点
があった。That is, the fluorocarbon vapor supplied to the second heat exchanger is a gas, and the second heat exchanger for superheating the fluorocarbon vapor also becomes large. Therefore, the first
A second
If a heat exchanger is inserted, the entire device becomes extremely large, which has the disadvantage of making it difficult to secure installation space.
口0発明の目的
工場から排出される温排水等の低温度の熱源(4)
によってフロン等の作動流体を蒸発させ、この蒸発した
□蒸気を用いて動力回収を行う時、当該蒸気を大型の熱
交換器を使用することなくスー回収装置を大型化するこ
’Q’=<動力回収iを増加させるものである。□
□ハ6発明の構成 □
排熱回収装置を、吸入孔及び吐出孔を有するケース本体
と、ケース本体内に回転自在に収納された、スクリュー
状をした雄ロータ及び雌ロータとからなるスクリュ一式
エキスパンダーと、スクリュ一式エキスパンダーに供給
する作動流体を排熱によって蒸発させるための蒸発器と
、スクリュ一式エキスパンダーに供給する油滑油を作動
流体の蒸気温度より高温に加熱するた□めの加熱器と、
スクリュ一式エキスパンダーから排出された蒸気を凝縮
させるための凝縮器と、上記作動流体及び潤滑油i+′
れぞれ循環させるための第1及び第2のポンプとによっ
て構成し、スクリュ一式エキスパンダ−に供給する蒸(
5)
気と潤滑油とをスクリュ一式エキスパンダーの吸入孔内
で直接接触させ、蒸気をスーパーヒートさせることによ
り、排熱回収装置の動力回収量を増加させるものである
。0 Purpose of the Invention When working fluids such as fluorocarbons are evaporated by a low-temperature heat source (4) such as heated wastewater discharged from a factory, and power recovery is performed using this evaporated steam, the steam is Enlarging the sous recovery device without using a heat exchanger increases 'Q'=<power recovery i. □ □C6 Structure of the invention □ The exhaust heat recovery device is a screw set consisting of a case body having an intake hole and a discharge hole, and a screw-shaped male rotor and a female rotor rotatably housed in the case body. an expander, an evaporator for evaporating the working fluid supplied to the screw set expander using waste heat, and a heater for heating the oil lubricant supplied to the screw set expander to a higher temperature than the vapor temperature of the working fluid;
a condenser for condensing the steam discharged from the screw set expander, and the above-mentioned working fluid and lubricating oil i+'
It consists of a first and a second pump for circulation, respectively, and supplies steam (
5) The amount of power recovered by the exhaust heat recovery device is increased by bringing air and lubricating oil into direct contact within the suction hole of the screw expander and superheating the steam.
二、実施例
第2図は本発明に係る排熱回収装置の構成を示すブロッ
ク図である、図中(10)は温排水等の熱源により作動
流体となるフロンを加熱、蒸発させるための蒸発器、(
11)は後述するスクリュ一式エキスパンダー(12)
に供給する潤滑油を蒸発器(10)内で蒸発したフロン
蒸気の温度より高温に加熱するための加熱器であり、当
該加熱器(11)の熱源には、図示の如く蒸発器(10
)に供給するのと同じ熱源を用いてもよいし、又他の熱
源を用いてもよい。(12)は蒸発器(10)内で蒸発
したフロン蒸気と、加熱器(11)内でフロン蒸気より
高温に加熱された潤滑油とが供給されるスクリュ一式エ
キスパンダーである。当該スクリュ一式エキスパンダー
(12)は第3図乃至第5図に示す如く、吸入孔(6)
(13)及び吐出孔(14)を有するケース本体(15
)と、ケース本体(15)内に回転自在に収納したスク
リュー状の雄ロータ(16)及び雌ロータ(17)とに
よって構成しである。当該雄ロータ(16)と雌ロータ
(17)とは両軸が平行となり、且つ両者が噛み合って
回転するようにしてケース本体(15)に配置しである
。又雄ロータ(16)と雌ロータ(17)の噛合いによ
って両者間に生じる歯形空間(a)は、両者が回転し、
噛合いが吸入側から吐出側へ移動するに従って容量が増
大するように、両ロータ(16) (17)の歯形形状
を設定しておく。又ケース本体(15)に設ける吸入孔
(13)及び吐出孔(14)は、雄ロータ(16)及び
雌ロータ(17)の端面に開口するようにしてあり、又
雄ロータ(16)及び雌ロータ(17)の外周はケース
本体(15)によっし囲繞しである。従ってスクリュ一
式エキスパンy−(12)の吸入孔(13)に流入した
フロン蒸気は、雌ロータ(16)と雌ロータ(17)と
の間に形成された歯形空間(a)内に流入し、雌(7)
ロータ(16)及び雌ロータ(17)を回転させ、歯形
空間(a)内で膨張した後吐出孔(14)から排出され
ることになり、この間で動力回収が行なわれる。又吸入
孔(13)の任意の位置には、上述した加熱器(11)
から吐出する、フロン蒸気より高温に加熱された潤滑油
をケース本体(15)内に噴出するためのノズル(図示
せず)が設けである。当該潤滑油は雄・雌ロータ(16
)(17)の潤滑と各部のシール作用を行うと同時に、
吸入孔(13)からケース本体(15)内に供給される
フロン蒸気と直接接触することにより、フロン蒸気をス
ーパーヒートさせるものである。(18)はスクリュ一
式エキスパンダー(12)の出力軸に連結した発電機、
(19)はスクリュ一式エキスパンダー(12)の吐出
孔(14)から排出されるフロン蒸気と潤滑油とを分離
するための油分離器、(20)は油分離器(19)によ
って分離されたフロン蒸気を凝縮するための凝縮器であ
り、当該凝縮器(20)には冷却水が供給される。(2
1)はフロンを上記した蒸発器(10)(8)
、スクリュ一式エキスパンダー(12) 、油分離器(
19)及び凝縮器(20)間で潤滑させるための第1の
ポンプ、(22)は潤滑油を加熱器(11)、スクリュ
一式エキスパンダー(12)及び油分離器(19)間で
循環させるための第2のポンプである。2. Embodiment Figure 2 is a block diagram showing the configuration of the exhaust heat recovery device according to the present invention. vessel,(
11) is a screw set expander (12) which will be described later.
This is a heater for heating the lubricating oil supplied to the evaporator (10) to a higher temperature than the temperature of the freon vapor evaporated in the evaporator (10), and the heat source of the heater (11) is the evaporator (10) as shown in the figure.
) may be used, or other heat sources may be used. (12) is a screw set expander to which fluorocarbon vapor evaporated in the evaporator (10) and lubricating oil heated to a higher temperature than the fluorocarbon vapor in the heater (11) are supplied. As shown in Figures 3 to 5, the screw set expander (12) has a case body (15) having suction holes (6) (13) and discharge holes (14).
), and a screw-shaped male rotor (16) and female rotor (17) rotatably housed within the case body (15). The male rotor (16) and the female rotor (17) are arranged in the case body (15) so that their axes are parallel and rotate in mesh with each other. Also, the tooth space (a) created between the male rotor (16) and the female rotor (17) when they rotate,
The tooth profiles of both rotors (16) and (17) are set so that the capacity increases as the mesh moves from the suction side to the discharge side. In addition, the suction hole (13) and the discharge hole (14) provided in the case body (15) are opened at the end faces of the male rotor (16) and the female rotor (17). The outer periphery of the rotor (17) is surrounded by the case body (15). Therefore, the fluorocarbon vapor that has flowed into the suction hole (13) of the screw set expander Y-(12) flows into the tooth space (a) formed between the female rotor (16) and the female rotor (17). , female (7) The rotor (16) and the female rotor (17) are rotated, and after expanding within the tooth space (a), it is discharged from the discharge hole (14), and power is recovered during this time. In addition, the above-mentioned heater (11) is placed at an arbitrary position of the suction hole (13).
A nozzle (not shown) is provided for spouting lubricating oil heated to a higher temperature than freon vapor into the case body (15). The lubricating oil is suitable for male and female rotors (16
)(17), and at the same time performs the lubrication and sealing of each part,
The fluorocarbon vapor is superheated by direct contact with the fluorocarbon vapor supplied into the case body (15) from the suction hole (13). (18) is a generator connected to the output shaft of the screw set expander (12);
(19) is an oil separator for separating lubricating oil from the Freon vapor discharged from the discharge hole (14) of the screw expander (12), and (20) is the Freon separated by the oil separator (19). This is a condenser for condensing steam, and cooling water is supplied to the condenser (20). (2
1) includes the above-mentioned evaporator (10) (8), screw set expander (12), oil separator (
a first pump (22) for circulating lubricating oil between the heater (11), the screw expander (12) and the oil separator (19); This is the second pump.
上記構成に於いて、本発明に係る排熱回収装置によって
発電を行なうには、熱源となる例えば温排水を蒸発器(
10)及び加熱器(11)に供給すると同時に、凝縮器
(20)に冷却水を供給する。この状態で第1及び第2
のポンプ(20)(21)を駆動させ、フロン及び潤滑
油を循環させる。すると第1のポンプ(21)から吐出
され、蒸発器(10)に送られた液体状のフロンは、蒸
発器(10)内で温排水によって加熱され、フロン蒸気
となってスクリュ一式エキスパンダー(12)の吸入孔
(13)に送られる。又第2のポンプ(22)から吐出
され、加熱器(11)に送られた潤滑油も、加熱器(1
1)内で温排水によって上述したフロン蒸気よりも高温
に加熱された(9)
後、スクリュ一式1エキシパンダー(12)の吸入孔(
13)に設置したノズルに供給され、ノズル先端から吸
入孔(13)内に噴射される。従って、スクリュ一式エ
キスパンダー(12)の吸入孔(13)に供給された?
ロン蒸気は、フロン蒸気より高温に加熱された潤滑油と
直接接触し、スーパーヒートされた後、スクリュ一式エ
キスパンダー(12)の雄ワーク(16)と雌ロータ(
17)との噛合いによって両者間に生じる歯形空間(1
)に潤滑油と、共に流入する。そして、歯形空間(a)
内でフロン蒸気が膨張することにより、雄ロータ(16
)と雌ロータ(17)とを回転させた後、フロン蒸気及
び潤滑油はスクリュ一式エキスパンダー(12)の吐出
孔(14)から油、分llt器(19)へと流入する。In the above configuration, in order to generate electricity using the exhaust heat recovery device according to the present invention, the heat source, for example, heated waste water, must be transferred to the evaporator (
10) and the heater (11), and at the same time, cooling water is supplied to the condenser (20). In this state, the first and second
The pumps (20) and (21) are driven to circulate Freon and lubricating oil. Then, the liquid Freon discharged from the first pump (21) and sent to the evaporator (10) is heated by hot water in the evaporator (10), becomes Freon vapor, and is sent to the screw set expander (12). ) is sent to the suction hole (13). In addition, the lubricating oil discharged from the second pump (22) and sent to the heater (11) also flows into the heater (11).
1) is heated to a higher temperature than the above-mentioned fluorocarbon vapor by heated water in 1) (9), then the suction hole (12) of the screw set 1 expander (12) is heated.
13), and is injected from the tip of the nozzle into the suction hole (13). Therefore, the gas was supplied to the suction hole (13) of the screw set expander (12).
The fluorocarbon steam directly contacts the lubricating oil heated to a higher temperature than the fluorocarbon steam, and after being superheated, the male workpiece (16) of the screw set expander (12) and the female rotor (
The tooth profile space (1) created between the two by meshing with
) together with lubricating oil. And tooth profile space (a)
The male rotor (16
) and the female rotor (17), the freon vapor and lubricating oil flow into the oil divider (19) from the discharge hole (14) of the screw set expander (12).
上記のようにしてスクリュ一式エキスパンダー(12)
の雄ロータ(16)と雌ロータ(17)とが回転すると
、スクリュ一式エキスパンダー(12)の出力軸と連結
した発電機(18)も回転するため、発電が行われる。Screw set expander (12) as above
When the male rotor (16) and female rotor (17) rotate, the generator (18) connected to the output shaft of the screw expander (12) also rotates, so that power is generated.
又油分離器(19)に流入したフロン蒸気(10)
と潤滑油は油分離器(19)内で分離する。そしてフロ
ン蒸気は凝縮(20)に送られ、凝縮器(20)内で冷
却水によって冷却され、フロン液となった後、第1のポ
ンプ(21)を通って再び蒸発器(10)に送られる。Furthermore, the fluorocarbon vapor (10) flowing into the oil separator (19) and the lubricating oil are separated in the oil separator (19). The fluorocarbon vapor is then sent to the condenser (20), where it is cooled by cooling water and becomes a fluorocarbon liquid, which is then sent to the evaporator (10) again through the first pump (21). It will be done.
又油分離器(19)から排出された潤滑油は、第2のポ
ンプ(22)を通って再び加熱器(11)に送られる。Also, the lubricating oil discharged from the oil separator (19) is sent to the heater (11) again through the second pump (22).
上記した動作を連続的に繰返すことにより、温排水等の
熱源からの動力回収を行う。By continuously repeating the above operations, power is recovered from a heat source such as heated waste water.
第6図は上記した排熱回収装置により動力回収を行う場
合に於いて、スクリュ一式エキスパンダーに供給される
フロン蒸気を潤滑油によってスーパーヒートした場合と
、そうでない場合とを比較したグラフである。図中h1
、hl”はスクリュ一式エキスパンダーの入口(蒸発器
出口)、h2、h2”はスクリュ一式エキスバイダーの
出口(凝縮器入口)、h3は凝縮器の出口(第1のポン
プ入口)、h4は第1のポンプの出口(蒸発器入口)を
示す。そしてフロン蒸気を潤滑油によってスーパーヒー
トしない場合の熱力学サイ(11)
クルは、h 1−h2−h3→h4となり、動力回収量
は(hl−h2)となる。又フロン蒸気を潤滑油によっ
てスーパーヒートさせた場合の熱力学サイクルは、hl
’ −h2’−h3−h4となる。また動力回収量は(
hl” −h2’ )となり、(hl’ −h2’ )
/ (hl−h2) >1.0となる。ここでスクリュ
一式エキスパンダー(12)入口でのフロン蒸気の温度
が60°C1出口が30″Gの条件において、潤滑油に
よってフロン蒸気を20°Cスーパーヒートさせると(
hl′ −h2’ ) / (hl−h2) =1.1
となり、約10%動力回収量が増加する。FIG. 6 is a graph comparing the case where the fluorocarbon vapor supplied to the screw set expander is superheated with lubricating oil and the case where it is not superheated when power is recovered by the above-mentioned exhaust heat recovery device. h1 in the diagram
, hl" is the inlet of the screw set expander (evaporator outlet), h2, h2" is the outlet of the screw set expander (condenser inlet), h3 is the condenser outlet (first pump inlet), h4 is the first shows the pump outlet (evaporator inlet). The thermodynamic cycle (11) when the fluorocarbon vapor is not superheated by lubricating oil is h1-h2-h3→h4, and the power recovery amount is (hl-h2). In addition, the thermodynamic cycle when fluorocarbon vapor is superheated by lubricating oil is hl
'-h2'-h3-h4. Also, the power recovery amount is (
hl"-h2'), and (hl'-h2')
/ (hl-h2) >1.0. Here, under the conditions that the temperature of the freon vapor at the inlet of the screw set expander (12) is 60°C and the exit is 30''G, if the freon vapor is superheated to 20°C with lubricating oil (
hl' - h2' ) / (hl - h2) = 1.1
Therefore, the power recovery amount increases by approximately 10%.
ホ0発明の効果
上記した如く、フロンを蒸発器によって蒸発させた後、
一対のロータからなるスクリュ一式エキスパンダーに供
給すると共に、スクリュ一式エキスパンダーに供給する
潤滑油を、フロン蒸気の温度より高温に加熱した後スク
リュ一式エキスパンダーに供給し、フロン蒸気に潤滑油
を直接接触させ、フロン蒸気をスーパーヒートさせれば
、従来のフロン蒸気をタービンに直接(12)
供給する装置に比べ動力回収量を増加できる。Effects of the Invention As mentioned above, after the fluorocarbons are evaporated by the evaporator,
Supplying lubricating oil to a screw set expander consisting of a pair of rotors, heating the lubricating oil supplied to the screw set expander to a higher temperature than the temperature of fluorocarbon vapor, and then supplying the lubricating oil to the screw set expander, bringing the lubricating oil into direct contact with the fluorocarbon vapor, By superheating the fluorocarbon vapor, the amount of power recovered can be increased compared to conventional systems that supply fluorocarbon vapor directly to the turbine (12).
又このようにスクリュ一式エキスパンダーに供給する液
体状の潤滑油を用いてフロン蒸気をスーパーヒートさせ
れば、潤滑油の加熱は小型の加熱器で行えるため、排熱
回収装置を大型化することなく動力回収量をi茄でき堀
。In addition, if the liquid lubricating oil supplied to the screw expander is used to superheat the Freon vapor, the lubricating oil can be heated with a small heater, so there is no need to increase the size of the exhaust heat recovery equipment. The amount of power recovered can be increased to i.
第1図は従来の排熱回収装置の構成を示すブロック図、
第2図は本発明に係る排熱回収装置の構成を示すブロッ
ク図、第3′lff1乃至第5図は、スクリュ一式エキ
スパンダーの構成を示す概略図、第6図は、本発明に係
る排熱回収装置の熱力学サイクルを示すグラフである。
(10)・−・・蒸発器、(11)−・−加熱器、(1
2) −スクリュ一式エキスパンダー、(13)−・−
吸入孔、(14L−吐出孔、(15) −・ケース本体
、(16)−雄ロータ、(17) −雌ロータ、(20
) =・−凝縮器、(21) −11のポンプ、(22
)−第2のポンプ。
(13)Figure 1 is a block diagram showing the configuration of a conventional exhaust heat recovery device.
FIG. 2 is a block diagram showing the configuration of the exhaust heat recovery device according to the present invention, FIGS. 3'lff1 to 5 are schematic diagrams showing the configuration of the screw set expander, and FIG. It is a graph showing the thermodynamic cycle of the recovery device. (10) --- Evaporator, (11) --- Heater, (1
2) -Screw set expander, (13)--
Suction hole, (14L-discharge hole, (15) - case body, (16) - male rotor, (17) - female rotor, (20
) =・-condenser, (21) -11 pump, (22
) - second pump. (13)
Claims (1)
ス本体内に回転自在に収納したスクリュー状の雄ロータ
及び雌ロータとからなるスクリュ一式エキスパンダーと
、スクリュ一式エキスパンダーに供給する作動流停を排
熱によって蒸発させるための蒸発器と、スクリュ一式エ
キスパンダーに供給する潤滑油を作勲流体の蒸気温度よ
り高温に加熱するための加熱器と、スクリュ一式エキス
パンダーから排出された蒸気を凝縮させるための凝縮器
と、上糾作瞥流体及び潤−油を循環させるための第1及
び第2のポンプとからなり、スクリュ一式エキろパング
ーに供給する蒸気生清湧油とをスクリュ一式エキスパン
ダーの吸込孔内で直接接触させたことを特徴とする排熱
回収装置。(1) A screw set expander consisting of a case body having an intake hole and a discharge hole, a screw-shaped male rotor and a female rotor rotatably housed in the case body, and an operation flow stopper that is supplied to the screw set expander. An evaporator for evaporating the oil using heat, a heater for heating the lubricating oil supplied to the screw expander to a higher temperature than the steam temperature of the operating fluid, and a condenser for condensing the steam discharged from the screw expander. It consists of a container, first and second pumps for circulating fluid and lubricating oil, and supplies the steam fresh spring oil to the screw set expander into the suction hole of the screw set expander. An exhaust heat recovery device characterized by direct contact with the
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP44784A JPS60144594A (en) | 1984-01-05 | 1984-01-05 | Waste heat recovery device |
SE8500022A SE456835B (en) | 1984-01-05 | 1985-01-03 | DEVICE FOR HEAT RECOVERY INCLUDING AN INJECTION TYPE EXPANSION SCREW ENGINE |
US06/688,941 US4608829A (en) | 1984-01-05 | 1985-01-04 | Waste heat recovering device |
FR8500078A FR2557921B1 (en) | 1984-01-05 | 1985-01-04 | LOST HEAT RECOVERY DEVICE USING OIL INJECTION SCREW REGULATOR. |
DE3500170A DE3500170C1 (en) | 1984-01-05 | 1985-01-04 | Appliance for heat recovery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP44784A JPS60144594A (en) | 1984-01-05 | 1984-01-05 | Waste heat recovery device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60144594A true JPS60144594A (en) | 1985-07-30 |
Family
ID=11474046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP44784A Pending JPS60144594A (en) | 1984-01-05 | 1984-01-05 | Waste heat recovery device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60144594A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62103405A (en) * | 1985-10-30 | 1987-05-13 | Hisaka Works Ltd | Recuperator |
WO2002031428A1 (en) * | 2000-10-09 | 2002-04-18 | Ki Suk Kim | Shell tube type filter and auto-controlled heat recovery system of waste water |
EP2540995A1 (en) | 2011-06-30 | 2013-01-02 | Kabushiki Kaisha Kobe Seiko Sho | Power generation apparatus |
EP2789852A2 (en) | 2013-04-08 | 2014-10-15 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Compressor |
CN104110284A (en) * | 2013-04-19 | 2014-10-22 | 天津大学 | Low-temperature thermal power generation organic medium circulating system |
CN111692076A (en) * | 2020-06-29 | 2020-09-22 | 秦皇岛玻璃工业研究设计院有限公司 | Waste heat recovery type air compressor and waste heat recovery method |
CN111765376A (en) * | 2020-06-12 | 2020-10-13 | 西安本清化学技术有限公司 | System and method for recycling waste steam containing non-condensed steam, viscous liquid drops and small solid particles |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6056105A (en) * | 1983-09-08 | 1985-04-01 | Hokuetsu Kogyo Co Ltd | Screw expander oil supply system |
-
1984
- 1984-01-05 JP JP44784A patent/JPS60144594A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6056105A (en) * | 1983-09-08 | 1985-04-01 | Hokuetsu Kogyo Co Ltd | Screw expander oil supply system |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62103405A (en) * | 1985-10-30 | 1987-05-13 | Hisaka Works Ltd | Recuperator |
WO2002031428A1 (en) * | 2000-10-09 | 2002-04-18 | Ki Suk Kim | Shell tube type filter and auto-controlled heat recovery system of waste water |
EP2540995A1 (en) | 2011-06-30 | 2013-01-02 | Kabushiki Kaisha Kobe Seiko Sho | Power generation apparatus |
US8739537B2 (en) | 2011-06-30 | 2014-06-03 | Kobe Steel, Ltd. | Power generation apparatus |
EP2789852A2 (en) | 2013-04-08 | 2014-10-15 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Compressor |
CN104110284A (en) * | 2013-04-19 | 2014-10-22 | 天津大学 | Low-temperature thermal power generation organic medium circulating system |
CN111765376A (en) * | 2020-06-12 | 2020-10-13 | 西安本清化学技术有限公司 | System and method for recycling waste steam containing non-condensed steam, viscous liquid drops and small solid particles |
CN111692076A (en) * | 2020-06-29 | 2020-09-22 | 秦皇岛玻璃工业研究设计院有限公司 | Waste heat recovery type air compressor and waste heat recovery method |
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