TWI546514B - System and method for analyzing waste heat recycling efficiency and computer product thereof - Google Patents

System and method for analyzing waste heat recycling efficiency and computer product thereof Download PDF

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TWI546514B
TWI546514B TW102109021A TW102109021A TWI546514B TW I546514 B TWI546514 B TW I546514B TW 102109021 A TW102109021 A TW 102109021A TW 102109021 A TW102109021 A TW 102109021A TW I546514 B TWI546514 B TW I546514B
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waste heat
heat recovery
organic rankine
rankine cycle
working fluid
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TW201435283A (en
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林佩勳
王佰祥
陳俊達
詹恆毅
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中國鋼鐵股份有限公司
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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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine

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廢熱回收效率分析方法、系統以及其電腦程式產品 Waste heat recovery efficiency analysis method, system and computer program product thereof

本發明是有關於一種廢熱回收效率分析方法、系統以及其電腦程式產品，特別是有關於一種應用應用有機朗肯循環(Organic Rankine Cycle,ORC)之廢熱回收效率分析方法、系統以及其電腦程式產品。 The invention relates to a waste heat recovery efficiency analysis method, a system and a computer program product thereof, in particular to an application application organic Rankine Cycle (ORC) waste heat recovery efficiency analysis method, system and computer program product thereof .

由於國際能源短缺，加上全球暖化應，除了持續致力於研究各種可行的替代能源外，業界也努力發展各種回收能源技術，以達到省電節能的效果。 Due to the international energy shortage and global warming, in addition to continuing to research various viable alternative energy sources, the industry is also striving to develop various energy recovery technologies to achieve energy-saving and energy-saving effects.

在現行的各種回收能源技術中，由於有機朗肯循環(Organic Rankine Cycle；ORC)廢熱回收系統可根據所採用的廢熱源來選擇適當的工作流體來回收廢熱，因此相較於傳統以水為工作流體之廢熱回收發電技術，有機朗肯循環廢熱回收系統具備低操作溫度、低操作壓力、設備簡單等優點，而且有機朗肯循環廢熱回收系統可針對特定製程或熱源作小型發電系統來進行規劃，與現有能源系統的整合性較高。另外，由能源策略面來看，若可善用有機朗肯循環廢熱回收系統來有效地回收低溫廢熱，不但可將目前無 用且可能造成環境熱污染的低溫廢熱轉為有用的電力，更可提升產品製程的能源利用效率，達到二氧化碳減量效果。 In the current various energy recovery technologies, the Organic Rankine Cycle (ORC) waste heat recovery system can select the appropriate working fluid to recover waste heat according to the waste heat source used. Fluid waste heat recovery power generation technology, organic Rankine cycle waste heat recovery system has the advantages of low operating temperature, low operating pressure, simple equipment, etc., and the organic Rankine cycle waste heat recovery system can be planned for a specific process or heat source for a small power generation system. Integration with existing energy systems is high. In addition, from the perspective of energy strategy, if the organic Rankine cycle waste heat recovery system can be used effectively to effectively recover low-temperature waste heat, not only can it be currently The low-temperature waste heat that may cause environmental heat pollution is converted into useful power, and the energy utilization efficiency of the product process can be improved to achieve the carbon dioxide reduction effect.

然而，就實務面而言，在有機朗肯循環廢熱回收系統裝設後，如何根據操作資料來診斷有機朗肯循環廢熱回收系統之性能是否正常以及如何維持高效率操作，此為操作管理上的重要課題。 However, in terms of practice, after the installation of the organic Rankine cycle waste heat recovery system, how to diagnose the performance of the organic Rankine cycle waste heat recovery system according to the operational data and how to maintain high efficiency operation, this is operational management. important topic.

因此，需要一種可預測和診斷有機朗肯循環廢熱回收系統之性能的廢熱回收效率分析技術。 Therefore, there is a need for a waste heat recovery efficiency analysis technique that predicts and diagnoses the performance of an organic Rankine cycle waste heat recovery system.

本發明之一方面是在提供於一種廢熱回收效率分析方法、系統以及其電腦程式產品。此廢熱回收效率分析方法與系統可預測特定操作條件下系統應具備之性能，除可作為維持高效率操作參數訂定工具外，更可作為性能診斷工具，節省設備異常時之診斷時程，降低設備異常對生產造成之影響，協助生產單位有效落實能源效率之提升。 One aspect of the present invention is to provide a waste heat recovery efficiency analysis method, system, and computer program product thereof. The waste heat recovery efficiency analysis method and system can predict the performance of the system under certain operating conditions, in addition to being used as a performance diagnostic tool to maintain high-efficiency operating parameters, and to save diagnostic time and reduce the time of equipment abnormality. The impact of equipment anomalies on production, assisting production units to effectively implement energy efficiency improvements.

根據本發明之一實施例，在此廢熱回收效率分析方法中，首先提供有機朗肯循環(Organic Rankine Cycle；ORC)廢熱回收系統。接著，進行廢熱量評估步驟，以計算廢熱源所提供之廢熱量。然後，進行工作流體確認步驟，以根據預設條件來決定有機朗肯循環廢熱回收系統所使用之工作流體。接著，進行系統操作狀態確認步驟，以決定有機朗肯循環廢熱回收系統所使用之工作流體。然後，決定有機朗肯循環廢熱回收系統之操作狀態。接著，根據有機朗肯循環廢熱回收系統之操作狀態、上述之廢熱量以及工作 流體之性質來計算有機朗肯循環廢熱回收系統之實際熱效率，並計算實際熱效率與預設熱效率之差值。然後，根據此差值來判斷有機朗肯循環廢熱回收系統是否出現異常。 According to an embodiment of the present invention, in the waste heat recovery efficiency analysis method, an organic Rankine Cycle (ORC) waste heat recovery system is first provided. Next, a waste heat evaluation step is performed to calculate the waste heat supplied by the waste heat source. Then, a working fluid confirmation step is performed to determine the working fluid used in the organic Rankine cycle waste heat recovery system according to preset conditions. Next, a system operation status confirmation step is performed to determine the working fluid used in the organic Rankine cycle waste heat recovery system. Then, the operational status of the organic Rankine cycle waste heat recovery system is determined. Then, according to the operating state of the organic Rankine cycle waste heat recovery system, the above waste heat and work The nature of the fluid is used to calculate the actual thermal efficiency of the organic Rankine cycle waste heat recovery system and to calculate the difference between the actual thermal efficiency and the preset thermal efficiency. Then, based on the difference, it is judged whether an abnormality occurs in the organic Rankine cycle waste heat recovery system.

根據本發明另一實施例，此廢熱回收效率分析系統包含電腦主機。此電腦主機包含廢熱量評估模組、工作流體確認模組、系統操作狀態確認模組、效率評估模組以及異常通知模組。廢熱量評估模組係用以計算廢熱源所提供之廢熱量。工作流體確認模組係用以決定有機朗肯循環廢熱回收系統之操作狀態。系統操作狀態確認模組係用以決定有機朗肯循環廢熱回收系統之操作狀態。效率評估模組係用以根據操作狀態、廢熱量以及工作流體之性質來計算有機朗肯循環廢熱回收系統之實際熱效率，並計算實際熱效率與預設熱效率之差值，以根據此差值來判斷有機朗肯循環廢熱回收系統是否出現異常。異常通知模組係用以於有機朗肯循環廢熱回收系統出現異常時，發出警告訊息。 According to another embodiment of the present invention, the waste heat recovery efficiency analysis system includes a computer host. The computer host includes a waste heat evaluation module, a working fluid confirmation module, a system operation status confirmation module, an efficiency evaluation module, and an abnormality notification module. The waste heat assessment module is used to calculate the waste heat provided by the waste heat source. The working fluid confirmation module is used to determine the operational status of the organic Rankine cycle waste heat recovery system. The system operating status confirmation module is used to determine the operational status of the organic Rankine cycle waste heat recovery system. The efficiency evaluation module is used to calculate the actual thermal efficiency of the organic Rankine cycle waste heat recovery system according to the operating state, waste heat and the nature of the working fluid, and calculate the difference between the actual thermal efficiency and the preset thermal efficiency to judge according to the difference. Whether there is an abnormality in the organic Rankine cycle waste heat recovery system. The abnormality notification module is used to issue a warning message when an abnormality occurs in the organic Rankine cycle waste heat recovery system.

根據本發明之再一實施例，前述之電腦程式產品經電腦載入後，此電腦可執行上述之廢熱回收效率分析方法。 According to still another embodiment of the present invention, after the computer program product is loaded by a computer, the computer can perform the above-mentioned waste heat recovery efficiency analysis method.

10‧‧‧ORC廢熱回收系統 10‧‧‧ORC waste heat recovery system

12‧‧‧泵浦 12‧‧‧ pump

14‧‧‧蒸發器 14‧‧‧Evaporator

16‧‧‧發電機 16‧‧‧Generator

18‧‧‧冷卻器 18‧‧‧cooler

20‧‧‧廢熱源 20‧‧‧ Waste heat source

100‧‧‧廢熱回收效率分析方法 100‧‧‧Method for analysis of waste heat recovery efficiency

110‧‧‧設備提供步驟 110‧‧‧ Equipment supply steps

120‧‧‧熱量評估步驟 120‧‧‧ Thermal assessment steps

130‧‧‧工作流體確認步驟 130‧‧‧Working fluid confirmation steps

140‧‧‧系統操作狀態確認步驟 140‧‧‧System operation status confirmation step

150‧‧‧效率評估步驟 150‧‧‧Evaluation steps

152‧‧‧泵消耗功率計算步驟 152‧‧‧ Pump power consumption calculation steps

154‧‧‧熱傳率計算步驟 154‧‧‧heat transfer rate calculation steps

156‧‧‧發電功率計算步驟 156‧‧‧Power generation calculation steps

158‧‧‧實際熱效率計算步驟 158‧‧‧ Actual thermal efficiency calculation steps

159‧‧‧差值計算步驟 159‧‧‧ Difference calculation steps

160‧‧‧異常判斷步驟 160‧‧‧Abnormal judgment steps

200‧‧‧廢熱回收效率分析系統 200‧‧‧Waste heat recovery efficiency analysis system

210‧‧‧電腦主機 210‧‧‧Computer host

211‧‧‧廢熱量評估模組 211‧‧‧Waste heat assessment module

213‧‧‧工作流體確認模組 213‧‧‧Working fluid confirmation module

215‧‧‧系統操作狀態確認模組 215‧‧‧System Operation Status Confirmation Module

217‧‧‧效率評估模組 217‧‧‧Efficiency Evaluation Module

219‧‧‧異常通知模組 219‧‧‧Anomaly notification module

220‧‧‧溫度偵測器 220‧‧‧Temperature Detector

230‧‧‧壓力偵測器 230‧‧‧ Pressure detector

240‧‧‧電量偵測器 240‧‧‧Power Detector

250‧‧‧流量偵測器 250‧‧‧Flow detector

260‧‧‧紀錄器 260‧‧‧ Recorder

為讓本發明之上述和其他目的、特徵、和優點能更明顯易懂，上文特舉數個較佳實施例，並配合所附圖式，作詳細說明如下：第1圖係繪示根據本發明實施例之廢熱回收效率分析方法的流程示意圖。 The above and other objects, features, and advantages of the present invention will become more apparent and understood. A schematic flow chart of a waste heat recovery efficiency analysis method according to an embodiment of the present invention.

第1a圖係繪示根據本發明實施例之有機朗肯循環 (Organic Rankine Cycle；ORC)廢熱回收系統的架構示意圖。 Figure 1a is an illustration of an organic Rankine cycle in accordance with an embodiment of the present invention. (Organic Rankine Cycle; ORC) Schematic diagram of the structure of the waste heat recovery system.

第1b圖係繪示根據本發明實施例之效率評估步驟之流程示意圖。 Figure 1b is a flow chart showing the efficiency evaluation step according to an embodiment of the present invention.

第2a圖係繪示根據本發明實施例之廢熱回收效率分析系統的架構示意圖。 FIG. 2a is a schematic diagram showing the structure of a waste heat recovery efficiency analysis system according to an embodiment of the present invention.

第2b圖係繪示根據本發明實施例之電腦主機之功能方塊示意圖。 Figure 2b is a block diagram showing the function of a computer host according to an embodiment of the present invention.

請參照第1圖，其係繪示根據本發明實施例之廢熱回收效率分析方法100的流程示意圖。在廢熱回收效率分析方法100中，首先進行設備提供步驟110，以提供有機朗肯循環(Organic Rankine Cycle；ORC)廢熱回收系統10，如第1a圖所示。 Please refer to FIG. 1 , which is a schematic flow chart of a waste heat recovery efficiency analysis method 100 according to an embodiment of the present invention. In the waste heat recovery efficiency analysis method 100, a device provision step 110 is first performed to provide an Organic Rankine Cycle (ORC) waste heat recovery system 10, as shown in Figure 1a.

有機朗肯循環廢熱回收系統10包含泵浦12、蒸發器14、發電機16以及冷卻器18。泵浦12係用以抽取工作流體至蒸發器14，以使蒸發器14將工作流體蒸發。蒸發器14係連接至廢熱源20，以利用廢熱源所提供之廢熱來蒸發工作流體。在本實施例中，廢熱源20為熱水，其可藉由蒸發器14來將所需待之熱量傳送至工作流體。由於工作流體的沸點比水低，因此，廢熱源20所傳送之廢熱量足以將至工作流體蒸發。發電機16係連接至蒸發器14，以利用蒸發後之工作流體來發電。在本實施例中，發電機16可為渦輪發電機(Turbine)或膨脹機發電裝置(expander)，但本發明之實施例並不受限於此。工作流體流經發電機16後，接著流 入冷卻器18。冷卻器18係用以冷卻工作流體，以獲得液態之工作流體，以供泵浦12抽取。 The organic Rankine cycle waste heat recovery system 10 includes a pump 12, an evaporator 14, a generator 16, and a cooler 18. The pump 12 is used to draw working fluid to the evaporator 14 to cause the evaporator 14 to vaporize the working fluid. The evaporator 14 is connected to the waste heat source 20 to evaporate the working fluid using the waste heat provided by the waste heat source. In the present embodiment, the waste heat source 20 is hot water, which can be used to transfer the heat to be treated to the working fluid by the evaporator 14. Since the working fluid has a lower boiling point than water, the waste heat delivered by the waste heat source 20 is sufficient to evaporate the working fluid. The generator 16 is connected to the evaporator 14 to generate electricity using the evaporated working fluid. In the present embodiment, the generator 16 may be a turbine generator or an expander generator, but embodiments of the invention are not limited thereto. The working fluid flows through the generator 16 and then flows Into the cooler 18. Cooler 18 is used to cool the working fluid to obtain a liquid working fluid for pump 12 extraction.

在設備提供步驟110之後，接著進行廢熱量評估步驟120，以計算廢熱源20所提供之廢熱量。然後，進行工作流體確認步驟130，以決定有機朗肯循環廢熱回收系統10所使用之工作流體。在本實施例中，工作流體為冷煤，例如R245fa，但本發明之實施例並不受限於此。在工作流體確認步驟130之後，接著進行系統操作狀態確認步驟140，以決定有機朗肯循環廢熱回收系統10之操作狀態。在本實施例中，操作狀態包含有機朗肯循環廢熱回收系統10的各種操作參數，例如發電機16之入口溫度，但本發明之實施例並不受限於此。 After the device providing step 110, a waste heat evaluation step 120 is then performed to calculate the waste heat provided by the waste heat source 20. Then, a working fluid confirmation step 130 is performed to determine the working fluid used in the organic Rankine cycle waste heat recovery system 10. In the present embodiment, the working fluid is cold coal, such as R245fa, but embodiments of the invention are not limited thereto. After the working fluid confirmation step 130, a system operational status confirmation step 140 is then performed to determine the operational status of the organic Rankine cycle waste heat recovery system 10. In the present embodiment, the operational state includes various operational parameters of the organic Rankine cycle waste heat recovery system 10, such as the inlet temperature of the generator 16, although embodiments of the invention are not so limited.

在系統操作狀態確認步驟140後，接著進行效率評估步驟150，以根據有機朗肯循環廢熱回收系統10之操作狀態、廢熱源20之廢熱量以及工作流體之性質來計算有機朗肯循環廢熱回收系統10之實際熱效率，並計算實際熱效率與預設熱效率之差值。 After the system operating state confirmation step 140, an efficiency evaluation step 150 is then performed to calculate an organic Rankine cycle waste heat recovery system based on the operating state of the organic Rankine cycle waste heat recovery system 10, the waste heat of the waste heat source 20, and the nature of the working fluid. The actual thermal efficiency of 10, and calculate the difference between the actual thermal efficiency and the preset thermal efficiency.

請參照第1b圖，其係繪示根據本發明實施例之效率評估步驟150之流程示意圖。在本實施例之有效率評估步驟150中，首先進行泵消耗功率計算步驟152，以計算泵浦12所消耗之功率。在本實施例中，泵消耗功率可以實際量測，或利用以下方程式來獲得：Wp=m(h2-h1) Please refer to FIG. 1b, which is a schematic flow chart of the efficiency evaluation step 150 according to an embodiment of the present invention. In the efficiency evaluation step 150 of the present embodiment, the pump power consumption calculation step 152 is first performed to calculate the power consumed by the pump 12. In the present embodiment, the pump power consumption can be actually measured, or obtained by the following equation: W p = m (h 2 - h 1 )

其中Wp為泵消耗功率、m為質量流率(mass flow rate)、(h2-h1)為泵壓縮過程所造成的焓(enthalpy)變化量。 Where W p is the pump power consumption, m is the mass flow rate, and (h 2 -h 1 ) is the amount of enthalpy change caused by the pump compression process.

在泵消耗功率計算步驟152後，接著進行熱傳率計算步驟154，以計算廢熱源20藉由蒸發器14進入有機朗肯循環廢熱回收系統10之廢熱熱傳率。在本實施例中，廢熱熱傳率(Qb)的計算方程式係表示如下：Qb=m(h3-h2) After the pump power consumption calculation step 152, a heat transfer rate calculation step 154 is then performed to calculate the waste heat transfer rate of the waste heat source 20 through the evaporator 14 into the organic Rankine cycle waste heat recovery system 10. In the present embodiment, the calculation equation of the waste heat transfer rate (Q b ) is expressed as follows: Q b =m(h 3 -h 2 )

其中(h3-h2)為廢熱源20對蒸發器14之等壓加熱過程所造成的焓變化量。 Where (h 3 -h 2 ) is the amount of enthalpy change caused by the isothermal heating process of the waste heat source 20 to the evaporator 14.

在廢熱熱傳率計算步驟154後，接著進行發電功率計算步驟156，以計算發電機16之發電功率(即對外提供之功率)。在本實施例中，發電機16之發電功率(Wt)的計算方程式係表示如下：Wt=m(h3-h4) After the waste heat transfer rate calculation step 154, a power generation power calculation step 156 is then performed to calculate the power generation of the generator 16 (i.e., the power supplied externally). In the present embodiment, the calculation equation of the power generation (W t ) of the generator 16 is expressed as follows: W t =m(h 3 -h 4 )

其中(h3-h4)為渦輪發電機(Turbine)或膨脹機發電裝置(expander)膨脹過程對外做功所造成的焓(enthalpy)變化量。 Where (h 3 -h 4 ) is the amount of enthalpy change caused by external work of the turbine generator or expander.

在發電功率計算步驟156後，接著進行實際熱效率計算步驟158，以計算有機朗肯循環廢熱回收系統10之熱效率。在本實施例中，熱效率(η cycle )的計算方程式係表示如下： After the power generation calculation step 156, an actual thermal efficiency calculation step 158 is then performed to calculate the thermal efficiency of the organic Rankine cycle waste heat recovery system 10. In the present embodiment, the calculation equation of the thermal efficiency ( η cycle ) is expressed as follows:

在實際熱效率計算步驟158後，接著進行差值計算步驟159，以計算有機朗肯循環廢熱回收系統10之實際熱效率與使用者預設之熱效率的差值。在本實施例中，預設 熱效率為使用者預期有機朗肯循環廢熱回收系統10所能達到的熱效率。 After the actual thermal efficiency calculation step 158, a difference calculation step 159 is then performed to calculate the difference between the actual thermal efficiency of the organic Rankine cycle waste heat recovery system 10 and the user's preset thermal efficiency. In this embodiment, the preset The thermal efficiency is the thermal efficiency that the user can expect from the organic Rankine cycle waste heat recovery system 10.

在效率評估步驟150後，接著進行異常判斷步驟160，以根據效率評估步驟150所提供之差值來判斷有機朗肯循環廢熱回收系統是否出現異常。在本實施例中，異常判斷步驟160係判斷此差值是否大於預設之容忍度閥值，但本發明之實施例並不受限於此。當異常判斷步驟160之判斷結果為是，表示有機朗肯循環廢熱回收系統10之效能出現異常，使用者需對其進行檢修，以恢復有機朗肯循環廢熱回收系統10原本的效能。 After the efficiency evaluation step 150, an abnormality determination step 160 is then performed to determine whether an abnormality has occurred in the organic Rankine cycle waste heat recovery system based on the difference provided by the efficiency evaluation step 150. In the present embodiment, the abnormality determining step 160 determines whether the difference is greater than a preset tolerance threshold, but embodiments of the present invention are not limited thereto. When the determination result of the abnormality determining step 160 is YES, it indicates that the performance of the organic Rankine cycle waste heat recovery system 10 is abnormal, and the user needs to perform maintenance to restore the original performance of the organic Rankine cycle waste heat recovery system 10.

另外，值得一提的是，本實施例之廢熱回收效率分析方法100不僅可對線上的有機朗肯循環廢熱回收系統10進行檢測，也可於有機朗肯循環廢熱回收系統10裝設之前，事前模擬與預測有機朗肯循環廢熱回收系統10之效能，以確保有機朗肯循環廢熱回收系統10之效能可達到使用者之目標。例如，模擬出預期設置之有機朗肯循環廢熱回收系統的各項操作參數，並利用廢熱回收效率分析方法100來對其進行。若廢熱回收效率分析方法100之異常判斷步驟160的判斷結果為否，則表示此模擬之有機朗肯循環廢熱回收系統之效能未能達到需求，使用者需再重新模擬或設計有機朗肯循環廢熱回收系統的各項操作參數，直到廢熱回收效率分析方法100之異常判斷步驟160的判斷結果為是。 In addition, it is worth mentioning that the waste heat recovery efficiency analysis method 100 of the present embodiment can not only detect the organic Rankine cycle waste heat recovery system 10 on the line, but also before the organic Rankine cycle waste heat recovery system 10 is installed. The performance of the organic Rankine cycle waste heat recovery system 10 is simulated and predicted to ensure that the performance of the organic Rankine cycle waste heat recovery system 10 meets the user's goals. For example, various operational parameters of the desired organic Rankine cycle waste heat recovery system are simulated and utilized by the waste heat recovery efficiency analysis method 100. If the determination result of the abnormality determining step 160 of the waste heat recovery efficiency analysis method 100 is negative, it indicates that the performance of the simulated organic Rankine cycle waste heat recovery system fails to meet the demand, and the user needs to re-simulate or design the organic Rankine cycle waste heat. The various operating parameters of the system are recovered until the determination result of the abnormality determining step 160 of the waste heat recovery efficiency analyzing method 100 is YES.

請同時參照第2a圖和第2b圖，第2a圖係繪示根 據本發明實施例之廢熱回收效率分析系統200的架構示意圖，第2b圖係繪示電腦主機210之功能方塊示意圖。廢熱回收效率分析系統200係應用上述之廢熱回收效率分析方法100來對有機朗肯循環廢熱回收系統進行檢測。廢熱回收效率分析系統200包含電腦主機210，此電腦主機210包含廢熱量評估模組211、工作流體確認模組213、系統操作狀態確認模組215、效率評估模組217以及異常通知模組219。廢熱量評估模組211係用以進行廢熱量評估步驟120，以得到廢熱源20所提供之廢熱量。工作流體確認模組213係用以進行工作流體確認步驟130，以根據使用者之需求來決定工作流體。系統操作狀態確認模組215係用以進行系統操作狀態確認步驟140，以獲得有機朗肯循環廢熱回收系統的各種操作參數並確認其操作狀態。效率評估模組217係用以進行效率評估步驟150以及異常判斷步驟160，以判斷有機朗肯循環廢熱回收系統之實際熱效率，是否異常。若有機朗肯循環廢熱回收系統被分析出異常，則異常通知模組219會發出異常警告訊息來通知使用者。在本實施例中，警告訊息可為燈光訊息、聲音訊息或文字訊息，但本發明之實施例並不受限於此。 Please refer to both Figure 2a and Figure 2b. Figure 2a shows the root According to the architecture diagram of the waste heat recovery efficiency analysis system 200 of the embodiment of the present invention, FIG. 2b is a functional block diagram of the computer host 210. The waste heat recovery efficiency analysis system 200 applies the above-described waste heat recovery efficiency analysis method 100 to detect an organic Rankine cycle waste heat recovery system. The waste heat recovery efficiency analysis system 200 includes a computer host 210 including a waste heat evaluation module 211, a work fluid confirmation module 213, a system operation status confirmation module 215, an efficiency evaluation module 217, and an abnormality notification module 219. The waste heat evaluation module 211 is configured to perform the waste heat evaluation step 120 to obtain the waste heat provided by the waste heat source 20. The working fluid confirmation module 213 is configured to perform a working fluid confirmation step 130 to determine the working fluid according to the needs of the user. The system operational status confirmation module 215 is configured to perform a system operational status confirmation step 140 to obtain various operational parameters of the organic Rankine cycle waste heat recovery system and to confirm its operational status. The efficiency evaluation module 217 is configured to perform an efficiency evaluation step 150 and an abnormality determination step 160 to determine whether the actual thermal efficiency of the organic Rankine cycle waste heat recovery system is abnormal. If the organic Rankine cycle waste heat recovery system is analyzed for an abnormality, the abnormality notification module 219 issues an abnormal warning message to notify the user. In this embodiment, the warning message may be a light message, a voice message or a text message, but embodiments of the invention are not limited thereto.

本實施例之電腦主機210可利用記憶體、中央處理器等硬體裝置並搭配電腦程式產品來實現。此電腦程式產品可包含儲存有多個指令之機器可讀取媒體，這些指令可程式化(programming)電腦來進行上述實施例中的步驟。機器可讀取媒體可為但不限定於軟碟、光碟、唯讀光碟、磁 光碟、唯讀記憶體、隨機存取記憶體、可抹除可程式唯讀記憶體(EPROM)、電子可抹除可程式唯讀記憶體(EEPROM)、光卡(optical card)或磁卡、快閃記憶體、或任何適於儲存電子指令的機器可讀取媒體。再者，本發明之實施例也可做為電腦程式產品來下載，其可藉由使用通訊連接(例如網路連線之類的連接)之資料訊號來從遠端電腦轉移至請求電腦。 The computer host 210 of the embodiment can be implemented by using a hardware device such as a memory or a central processing unit and a computer program product. The computer program product can include machine readable media storing a plurality of instructions that can be programmed to perform the steps in the above embodiments. Machine readable media can be, but is not limited to, floppy disks, optical disks, CD-ROMs, magnetic Optical disc, read-only memory, random access memory, erasable programmable read-only memory (EPROM), electronic erasable programmable read-only memory (EEPROM), optical card or magnetic card, fast Flash memory, or any machine suitable for storing electronic instructions, can read media. Furthermore, embodiments of the present invention can also be downloaded as a computer program product that can be transferred from a remote computer to a requesting computer by using a data signal of a communication connection (such as a connection such as a network connection).

另外，本發明實施例之廢熱回收效率分析系統200可更包含複數個溫度偵測器220、複數個壓力偵測器230、複數個電量偵測器240、複數個流量偵測器250以及紀錄器260。溫度偵測器220、壓力偵測器230以及電量偵測器240係用以量測有機朗肯循環廢熱回收系統各部位之溫度值、壓力值和電量值，而流量偵測器250係用以偵測工作流體之流量，以幫助電腦主機210進行廢熱回收效率分析方法100。紀錄器260係連接於電腦主機210與各偵測器之間，以紀錄各偵測器所測量到的數值。 In addition, the waste heat recovery efficiency analysis system 200 of the embodiment of the present invention may further include a plurality of temperature detectors 220, a plurality of pressure detectors 230, a plurality of power detectors 240, a plurality of traffic detectors 250, and a recorder. 260. The temperature detector 220, the pressure detector 230, and the power detector 240 are used to measure the temperature value, the pressure value, and the power value of each part of the organic Rankine cycle waste heat recovery system, and the flow detector 250 is used. The flow rate of the working fluid is detected to assist the host computer 210 in performing the waste heat recovery efficiency analysis method 100. The recorder 260 is connected between the host computer 210 and each detector to record the values measured by the detectors.

下表一係代表本發明實施例之廢熱回收效率分析方法100與實際操作的誤差比較。由表一可知表本發明實施例之廢熱回收效率分析方法100與實際操作的誤差很小，其預測的準確性可信賴。 The following table 1 represents a comparison of the error of the waste heat recovery efficiency analysis method 100 of the embodiment of the present invention with actual operation. It can be seen from Table 1 that the waste heat recovery efficiency analysis method 100 of the embodiment of the present invention has a small error with actual operation, and the accuracy of the prediction is reliable.

雖然本發明已以數個實施例揭露如上，然其並非用以限定本發明，在本發明所屬技術領域中任何具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 While the invention has been described above in terms of several embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced in various embodiments without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

100‧‧‧廢熱回收效率分析方法 100‧‧‧Method for analysis of waste heat recovery efficiency

110‧‧‧設備提供步驟 110‧‧‧ Equipment supply steps

120‧‧‧熱量評估步驟 120‧‧‧ Thermal assessment steps

130‧‧‧工作流體確認步驟 130‧‧‧Working fluid confirmation steps

140‧‧‧系統操作狀態確認步驟 140‧‧‧System operation status confirmation step

150‧‧‧效率評估步驟 150‧‧‧Evaluation steps

160‧‧‧異常判斷步驟 160‧‧‧Abnormal judgment steps

Claims (10)

一種廢熱回收效率分析方法，包含：提供一有機朗肯循環(Organic Rankine Cycle；ORC)廢熱回收系統；進行一廢熱量評估步驟，以計算一廢熱源所提供之一廢熱量；進行一工作流體確認步驟，以決定該有機朗肯循環廢熱回收系統所使用之一工作流體；進行一系統操作狀態確認步驟，以決定該有機朗肯循環廢熱回收系統之一操作狀態；進行一效率評估步驟，以根據該操作狀態、該廢熱量以及該工作流體之性質來計算該有機朗肯循環廢熱回收系統之一實際熱效率，並計算該實際熱效率與一預設熱效率之一差值；以及根據該差值來判斷該有機朗肯循環廢熱回收系統是否出現異常。 A waste heat recovery efficiency analysis method comprises: providing an organic Rankine Cycle (ORC) waste heat recovery system; performing a waste heat evaluation step to calculate a waste heat provided by a waste heat source; performing a working fluid confirmation a step of determining a working fluid used in the organic Rankine cycle waste heat recovery system; performing a system operation state confirmation step to determine an operational state of the organic Rankine cycle waste heat recovery system; performing an efficiency evaluation step to Calculating an actual thermal efficiency of the organic Rankine cycle waste heat recovery system by calculating the operating state, the waste heat, and the nature of the working fluid, and calculating a difference between the actual thermal efficiency and a predetermined thermal efficiency; and determining the difference according to the difference Whether the organic Rankine cycle waste heat recovery system is abnormal. 如申請專利範圍1項所述之廢熱回收效率分析方法，其中該有機朗肯循環廢熱回收系統係進行一有機朗肯循環，該有機朗肯循環包含：利用一泵浦來抽取該工作流體；進行一加熱蒸發步驟，以蒸發該工作流體；進行一功率輸出步驟，以利用被蒸發之該工作流體來推動一發電機，並輸出已降溫之該工作流體；以及 進行一冷卻步驟，以冷卻該工作流體。 The waste heat recovery efficiency analysis method according to claim 1, wherein the organic Rankine cycle waste heat recovery system performs an organic Rankine cycle, wherein the organic Rankine cycle comprises: extracting the working fluid by using a pump; a heating evaporation step to evaporate the working fluid; performing a power output step to drive a generator with the evaporated working fluid and outputting the cooled working fluid; A cooling step is performed to cool the working fluid. 如申請專利範圍2項所述之廢熱回收效率分析方法，其中該效率評估步驟包含：計算該泵浦壓縮過程所消耗之一泵消耗功率；計算該廢熱源藉由該蒸發器進入該有機朗肯循環廢熱回收系統之一廢熱熱傳率；計算該發電機所提供之一發電功率；以及根據該泵消耗功率、該發電功率、該廢熱熱傳率以及該質量流率來計算該實際熱效率之值。 The method for analyzing waste heat recovery efficiency according to claim 2, wherein the efficiency evaluation step comprises: calculating a power consumption of a pump consumed by the pump compression process; and calculating the waste heat source to enter the organic Rankine by the evaporator a waste heat recovery rate of the circulating waste heat recovery system; calculating a power generated by the generator; and calculating the actual thermal efficiency value according to the pump power consumption, the power generation power, the waste heat heat transfer rate, and the mass flow rate . 如申請專利範圍1項所述之廢熱回收效率分析方法，其中該發電機為渦輪發電機(Turbine)或膨脹機發電裝置(expander)。 The waste heat recovery efficiency analysis method according to claim 1, wherein the generator is a turbine generator or an expander generator. 如申請專利範圍1項所述之廢熱回收效率分析方法，其中該工作流體為冷煤。 The waste heat recovery efficiency analysis method according to claim 1, wherein the working fluid is cold coal. 一種電腦程式產品，經一電腦載入後，該電腦可執行如申請專利範圍1項所述之廢熱回收效率分析方法。 A computer program product, after being loaded by a computer, the computer can perform the waste heat recovery efficiency analysis method as described in claim 1 of the patent application. 一種廢熱回收效率分析系統，用以分析一有機朗肯循環廢熱回收系統之熱效率，其中該廢熱回收效率分析系統包含：一電腦主機，包含：一廢熱量評估模組，用以計算一廢熱源所提供之一 廢熱量；一工作流體確認模組，用以決定該有機朗肯循環廢熱回收系統之一操作狀態；一系統操作狀態確認模組，用以決定該有機朗肯循環廢熱回收系統之一操作狀態；一效率評估模組，用以根據該操作狀態、該廢熱量以及該工作流體之性質來計算該有機朗肯循環廢熱回收系統之一實際熱效率，並計算該實際熱效率與一預設熱效率之一差值，以根據該差值來判斷該有機朗肯循環廢熱回收系統是否出現異常；以及一異常通知模組，當該有機朗肯循環廢熱回收系統出現異常時，發出警告訊息。 A waste heat recovery efficiency analysis system for analyzing the thermal efficiency of an organic Rankine cycle waste heat recovery system, wherein the waste heat recovery efficiency analysis system comprises: a computer host comprising: a waste heat evaluation module for calculating a waste heat source Offer one Waste heat; a working fluid confirmation module for determining an operational state of the organic Rankine cycle waste heat recovery system; a system operation status confirmation module for determining an operational state of the organic Rankine cycle waste heat recovery system; An efficiency evaluation module for calculating an actual thermal efficiency of the organic Rankine cycle waste heat recovery system according to the operating state, the waste heat, and the nature of the working fluid, and calculating a difference between the actual thermal efficiency and a predetermined thermal efficiency a value for determining whether the organic Rankine cycle waste heat recovery system is abnormal according to the difference; and an abnormality notification module that issues a warning message when the organic Rankine cycle waste heat recovery system is abnormal. 如申請專利範圍第7項所述之廢熱回收效率分析系統，更包含複數個溫度偵測器和複數個壓力偵測器，其中該些溫度偵測器和該些壓力偵測器係連接於該電腦主機和該有機朗肯循環廢熱回收系統之間。 The waste heat recovery efficiency analysis system described in claim 7 further includes a plurality of temperature detectors and a plurality of pressure detectors, wherein the temperature detectors and the pressure detectors are connected to the Between the host computer and the organic Rankine cycle waste heat recovery system. 如申請專利範圍第8項所述之廢熱回收效率分析系統，更包含一紀錄器，用以紀錄該些溫度偵測器、該些壓力偵測器、該些流量量測裝置以及該些電量量測裝置所量測得之數值。 The waste heat recovery efficiency analysis system described in claim 8 further includes a recorder for recording the temperature detectors, the pressure detectors, the flow measurement devices, and the amount of electricity The measured value of the measuring device. 如申請專利範圍第7項所述之廢熱回收效率分析系統，其中該警告訊息為燈光訊息、聲音訊息或文字訊息。 For example, the waste heat recovery efficiency analysis system described in claim 7 wherein the warning message is a light message, a voice message or a text message.
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CN108595383A (en) * 2018-03-29 2018-09-28 武汉钢铁有限公司 A kind of residual heat resources analysis method and system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108595383A (en) * 2018-03-29 2018-09-28 武汉钢铁有限公司 A kind of residual heat resources analysis method and system
CN108595383B (en) * 2018-03-29 2022-04-26 武汉钢铁有限公司 Waste heat resource analysis method and system

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