本文選題：靈敏度分析 + 流程模擬　； 參考：《青島科技大學(xué)》2015年碩士論文

【摘要】：換熱網(wǎng)絡(luò)是能量回收的一個重要系統(tǒng),靈敏度分析和彈性分析對換熱網(wǎng)絡(luò)的設(shè)計、優(yōu)化改進及最優(yōu)控制起著至關(guān)重要的作用。本文對換熱網(wǎng)絡(luò)的靈敏度分析和彈性分析進行深入系統(tǒng)的研究,建立靈敏度分析和彈性分析的理論方法和數(shù)學(xué)模型,以解決如何在最小程度上或以最少的投資對換熱網(wǎng)絡(luò)進行改造使網(wǎng)絡(luò)擁有最優(yōu)控制性能的優(yōu)化問題。本文根據(jù)靈敏度系數(shù)、靈敏度和彈性指數(shù)的定義,建立靈敏度系數(shù)、靈敏度分析及彈性分析的數(shù)學(xué)模型,模型可自動確定決策變量、狀態(tài)變量及參數(shù),給出求解方法。將建立的模型與換熱網(wǎng)絡(luò)流程模擬有機結(jié)合,對需要優(yōu)化的換熱網(wǎng)絡(luò),將原始數(shù)據(jù)通過數(shù)學(xué)模型進行初步計算,然后進行流程模擬,如果不符合設(shè)計要求可返回進行迭代計算,再流程模擬,重復(fù)過程直到滿足要求。此方法規(guī)避了計算復(fù)雜的非線性規(guī)劃問題,減小了計算量并提高了計算精度。用Inter Visual Fortran語言對所建立的數(shù)學(xué)模型和求解方法編制計算機程序,通過程序的輸出可以直接看到網(wǎng)絡(luò)的變化并知曉如何優(yōu)化網(wǎng)絡(luò)。用工程實例進行考核,并將結(jié)果與經(jīng)典的靈敏度分析和彈性分析的方法進行比較,得出年綜合費用為30479美元,本方法與文獻相比,費用小于其34376美元的年費用,同時本方法輸入數(shù)據(jù)簡單,即能節(jié)省運算時間,也能減少計算出錯的幾率。將編制的程序嵌入“換熱網(wǎng)絡(luò)優(yōu)化節(jié)能系統(tǒng)”軟件中,構(gòu)成靈敏度分析及彈性分析模塊,完善了軟件功能,使用靈活方便,使軟件功能更加強大。
[Abstract]:Heat transfer network is an important system of energy recovery. Sensitivity analysis and elastic analysis play an important role in the design, optimization and control of heat transfer network. In this paper, the sensitivity analysis and elastic analysis of heat transfer network are studied systematically, and the theoretical methods and mathematical models of sensitivity analysis and elastic analysis are established. In order to solve the problem of how to transform the heat exchanger network to the minimum degree or with the least investment, the optimal control performance of the network can be obtained. According to the definition of sensitivity coefficient, sensitivity and elastic index, a mathematical model of sensitivity coefficient, sensitivity analysis and elastic analysis is established in this paper. The model can automatically determine the decision variables, state variables and parameters, and give the solution method. Combining the established model with the flow simulation of heat transfer network, the original data is calculated through the mathematical model for the heat transfer network that needs to be optimized, and then the process simulation is carried out. If the model does not meet the design requirements, it can be returned to carry out iterative calculation. Reprocess simulation, repeat the process until it meets the requirements. This method avoids the complex nonlinear programming problem, reduces the computational complexity and improves the accuracy. The computer program is programmed with Inter Visual Fortran language for the mathematical model and solution method. Through the output of the program, the change of the network can be seen directly and how to optimize the network can be realized. The results are compared with the classical methods of sensitivity analysis and elastic analysis. The results show that the annual comprehensive cost is US $30479. Compared with the literature, the annual cost of this method is less than US $34376. At the same time, the method is simple to input data, which can save operation time and reduce the probability of calculation error. The program is embedded in the software of "Heat transfer Network Optimization and Energy-saving system", which constitutes a sensitivity analysis and elastic analysis module, which improves the function of the software, is flexible and convenient to use, and makes the software function more powerful.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ021.8

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本文編號：2107836