【摘要】：燃?xì)廨啓C(jī)因投資小、靈活可靠和環(huán)保性能好而備受青睞,因而極大的帶動(dòng)了燃?xì)廨啓C(jī)聯(lián)合循環(huán)(Gas Turbine Combined Cycle,GTCC)工藝的迅速發(fā)展,其中 燃機(jī)+余熱鍋爐+煙氣余熱吸收式制冷‖聯(lián)合系統(tǒng),因能較大限度的回收燃機(jī)乏氣的余熱,熱效率高,受到學(xué)術(shù)和工程界的廣泛重視。本文以某煉油廠固定熱電冷需求(44MW電、1.0MPa蒸汽65t/h、2000k W冷量)的 燃?xì)廨啓C(jī)+單壓不補(bǔ)燃余熱鍋爐+余鍋煙氣分離式熱管溴化鋰吸收式制冷‖聯(lián)合系統(tǒng)為對(duì)象,在權(quán)衡設(shè)備情況,約定余鍋排煙150~200°C的條件下,分 燃機(jī)+余鍋‖、 單效溴化鋰制冷機(jī)組‖、 分離式熱管煙氣余熱發(fā)生器‖三個(gè)子系統(tǒng)對(duì)聯(lián)合系統(tǒng)進(jìn)行了優(yōu)化設(shè)計(jì)。首先建立了上述三個(gè)子系統(tǒng)的機(jī)理模型,然后通過(guò)自由度分析確定了三個(gè)子系統(tǒng)的獨(dú)立變量數(shù)(分別為4、8、9),并依據(jù)工程約束和設(shè)計(jì)方便選定了相應(yīng)的優(yōu)化設(shè)計(jì)變量,再規(guī)定其目標(biāo)函數(shù)分別為年度化總操作費(fèi)用(TAC)、單位面積熱力系數(shù)(A/COP)和發(fā)生器總傳熱系數(shù)(UH),然后分別編制了三個(gè)子系統(tǒng)的MATLAB遺傳算法計(jì)算程序進(jìn)行了優(yōu)化求解。通過(guò)遺傳算法優(yōu)化后得到在對(duì)應(yīng)最優(yōu)設(shè)計(jì)條件下,第一個(gè)子系統(tǒng)的最小TAC為1283×104㱮/y,第二個(gè)子系統(tǒng)的最優(yōu)A/COP為729.32(對(duì)應(yīng)COP=0.7252、A=528.9 m2),第三個(gè)子系統(tǒng)的最優(yōu)2=32.0W/(m C)HU×° 。
[Abstract]:Gas turbines are favored for their small investment, flexibility, reliability and good environmental protection performance, which greatly promote the rapid development of gas turbine combined cycle (Gas Turbine Combined cycle technology. The combined system of flue gas waste heat absorption refrigeration and cooling system of gas turbine waste heat boiler has been widely paid attention to by academic and engineering circles because of its high thermal efficiency due to its ability to recover the waste heat from spent gas of gas turbine to a large extent. In this paper, the fixed thermoelectric cooling demand (44MW 1.0 MPA steam 65t / h 2000kW cooling capacity) of a refinery is taken as the object of this paper. The combined system of lithium bromide absorption refrigeration and cooling system with separated heat pipe of flue gas from waste gas boiler with single pressure and no supplementary combustion of gas turbine is taken as the object of this paper, and the equipment situation is weighed. The optimal design of the combined system was carried out under the conditions of 150 ~ 200 擄C exhaust smoke from the residual boiler, three subsystems of the separated heat pipe flue gas waste heat generator and three subsystems, namely, the compartmentalized gas turbine, the single effect lithium bromide refrigeration unit and the separated heat pipe flue gas waste heat generator. Firstly, the mechanism model of the three subsystems mentioned above is established, and then the number of independent variables of the three subsystems is determined by the analysis of degrees of freedom (respectively 4 / 8 / 9), and the corresponding optimal design variables are selected according to the engineering constraints and design convenience. Then the objective function is defined as annual total operating cost (TAC),) thermal coefficient per unit area (A/COP) and generator total heat transfer coefficient (UH),). Then the MATLAB genetic algorithm program of three subsystems is developed to optimize the solution. Under the corresponding optimal design condition, the minimum TAC of the first subsystem is 1283 脳 10 4 / y, the optimal A/COP of the second subsystem is 729.32 (corresponding to A/COP 0.7252 An 528.9 m2), and the optimal 2=32.0W/ (m C) HU 脳 擄of the third subsystem is obtained by genetic algorithm optimization.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE96

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