KR102041787B1 - 유기랭킨사이클 시스템의 효율을 극대화시키기 위한 최적의 작동유체 혼합율 결정 방법 - Google Patents
유기랭킨사이클 시스템의 효율을 극대화시키기 위한 최적의 작동유체 혼합율 결정 방법 Download PDFInfo
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- KR102041787B1 KR102041787B1 KR1020170161349A KR20170161349A KR102041787B1 KR 102041787 B1 KR102041787 B1 KR 102041787B1 KR 1020170161349 A KR1020170161349 A KR 1020170161349A KR 20170161349 A KR20170161349 A KR 20170161349A KR 102041787 B1 KR102041787 B1 KR 102041787B1
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- 239000012530 fluid Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000498 cooling water Substances 0.000 claims abstract description 37
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 claims description 32
- 239000002826 coolant Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- YBGRCYCEEDOTDH-JYNQXTMKSA-N evap protocol Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1.O([C@H]1C[C@@](O)(CC=2C(O)=C3C(=O)C=4C=CC=C(C=4C(=O)C3=C(O)C=21)OC)C(=O)CO)[C@H]1C[C@H](N)[C@H](O)[C@H](C)O1.COC1=C(O)C(OC)=CC([C@@H]2C3=CC=4OCOC=4C=C3C(O[C@H]3[C@@H]([C@@H](O)[C@@H]4O[C@H](C)OC[C@H]4O3)O)[C@@H]3[C@@H]2C(OC3)=O)=C1.C([C@H](C[C@]1(C(=O)OC)C=2C(=C3C([C@]45[C@H]([C@@]([C@H](OC(C)=O)[C@]6(CC)C=CCN([C@H]56)CC4)(O)C(=O)OC)N3C)=CC=2)OC)C[C@@](C2)(O)CC)N2CCC2=C1NC1=CC=CC=C21 YBGRCYCEEDOTDH-JYNQXTMKSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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Classifications
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- 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
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- 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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
도 2는 본 발명의 유기랭킨사이클 시스템의 효율을 극대화시키기 위한 최적의 작동유체 혼합율 결정 방법에서 유기랭킨사이클의 변수 및 작동유체의 혼합율에 따른 발전기의 효율을 나타낸 도면이다.
도 3은 본 발명의 유기랭킨사이클 시스템의 효율을 극대화시키기 위한 최적의 작동유체 혼합율 결정 방법에서 증발기 열원의 온도차와 응축기 냉각수의 온도차가 같다고 가정한 경우에 온도차 및 증발기 입구 온도에 따라 발전기가 최고 효율을 나타낼 때의 R245fa의 질량 분율을 나타낸 도면이다.
도 4는 본 발명의 유기랭킨사이클 시스템의 효율을 극대화시키기 위한 최적의 작동유체 혼합율 결정 방법에서 증발기 및 응축기에서의 열원의 온도차 및 냉각수의 온도차에 따른 발전기가 최고 효율일 때의 R245fa의 질량 분율을 그래프로 나타낸 도면이다.
도 5는 본 발명의 유기랭킨사이클 시스템의 효율을 극대화시키기 위한 최적의 작동유체 혼합율 결정 방법에서 온도 편차의 평균 값(DTS_AVE)이 일정한 상태에서 증발기 열원의 온도차와 응축기 냉각수의 온도차가 상이한 경우에 발전기가 최고 효율을 보일 때의 R245fa의 질량 분율을 나타낸 도면이다.
Claims (2)
- 유기랭킨사이클 시스템에서 발전기가 최고 효율을 나타내는 작동유체의 혼합율을 결정하는 방법으로서,
열원이 증발기로 들어갈 때와 나올 때의 온도를 측정하는 단계;
냉각수가 응축기로 들어갈 때와 나올 때의 온도를 측정하는 단계;
증발기 열원의 온도차와 응축기 냉각수의 온도차의 온도 편차 평균값()을 결정하는 단계;
상기 증발기의 열원 온도차와 상기 응축기의 냉각수의 온도차가 4 내지 20의 범위에서 동일하다고 가정하고 상기 증발기의 열원 온도차와 상기 응축기의 냉각수의 온도차 및 증발기 입구 온도를 고정시킨 상태에서 R245fa의 함량을 변화시키면서 발전기가 최고 효율을 나타내는 R245fa의 질량분율을 확인하여 하기 [수식3]을 도출하는 단계;
상기 증발기의 열원 온도차와 상기 응축기의 냉각수의 온도차의 평균값이 10인 경우에 발전기가 최고 효율을 나타내는 R245fa의 질량분율과 상기 증발기의 열원 온도차와 상기 응축기의 냉각수의 온도차가 각각 10으로 동일한 경우에 발전기가 최고 효율을 나타내는 R245fa의 질량분율을 비교하여 R245fa의 질량분율의 편차를 확인하는 단계;
상기 확인된 R245fa의 질량분율의 편차를 근거로 하기 [수식3]을 보정하여 하기 [수식4]를 도출하는 단계; 및
하기 [수식4]를 통해 발전기가 최고 효율을 나타내는 작동유체의 혼합율을 결정하는 것을 특징으로 하는 유기랭킨사이클 시스템의 효율을 극대화시키기 위한 최적의 작동유체 혼합율 결정 방법.
[수식 3]
[수식 4]
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WO2024117330A1 (ko) * | 2022-12-02 | 2024-06-06 | 한국전자기술연구원 | 인공지능 기반 유체기계의 최적 운전점 예측 방법 |
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JP2017226855A (ja) | 2017-09-20 | 2017-12-28 | セントラル硝子株式会社 | 熱エネルギーを機械エネルギーへ変換する方法、有機ランキンサイクル装置、及び作動流体を置換える方法 |
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