本文選題：建筑能耗 + 冷熱電三聯(lián)供�。� 參考：《天津大學(xué)》2012年碩士論文

【摘要】：綠色建筑是在全壽命周期中實(shí)現(xiàn)高效率地利用資源的建筑物。發(fā)展綠色建筑,節(jié)約能源資源、保護(hù)環(huán)境,是中國(guó)建筑的發(fā)展方向和必然要求。建筑能耗模擬是建筑節(jié)能設(shè)計(jì)的首要任務(wù)和重要技術(shù)手段。隨著天然氣的廣泛應(yīng)用和環(huán)保要求的不斷提高,冷熱電三聯(lián)產(chǎn)已經(jīng)成為我國(guó)城市不可或缺的能源供應(yīng)模式之一,其具有能源利用合理、綜合效率高、經(jīng)濟(jì)性較好、環(huán)保性?xún)?yōu)良、冷熱電負(fù)荷分配靈活等優(yōu)勢(shì)。燃?xì)饫錈犭娐?lián)產(chǎn)(CCHP)是一種建立在能量梯級(jí)利用概念基礎(chǔ)上,以天然氣為一次能源,同時(shí)產(chǎn)生電能和可用熱/冷能的能源系統(tǒng),目的在于提高系統(tǒng)能源利用效率,減少CO_2、SO_2等有害氣體的排放。 本文通過(guò)介紹建筑能耗計(jì)算方法并比較分析各種能耗模擬軟件,總結(jié)能耗模擬國(guó)內(nèi)外現(xiàn)狀,提出基于EnergyPlus的新一代建筑能耗模擬軟件用戶(hù)界面DesignBuilder,并簡(jiǎn)述其性能特點(diǎn)及應(yīng)用。利用EnergyPlus結(jié)合DesignBuilder軟件對(duì)生態(tài)城動(dòng)漫園環(huán)內(nèi)區(qū)域進(jìn)行能耗模擬,獲取較準(zhǔn)確的基于實(shí)際運(yùn)行時(shí)間的冷熱電動(dòng)態(tài)負(fù)荷及能耗。 冷、熱、電三聯(lián)供系統(tǒng)只有在合理的配置與運(yùn)行方式下才能充分發(fā)揮其節(jié)能、環(huán)保、綜合效率高的優(yōu)點(diǎn)。本文在目前存在的單純以電定熱和以熱定電配置方式的基礎(chǔ)上提出新的思路,即綜合考慮系統(tǒng)容量配置和運(yùn)行策略進(jìn)行經(jīng)濟(jì)性評(píng)價(jià)。本文以全壽命周期年費(fèi)用(LCC)最小為主要目標(biāo)函數(shù)建立優(yōu)化評(píng)價(jià)模型,并綜合考慮凈現(xiàn)值最大和(火用)經(jīng)濟(jì)系數(shù)最小及投資回收期合理等對(duì)能源系統(tǒng)配置和運(yùn)行優(yōu)化評(píng)價(jià),確定最佳系統(tǒng)方案。結(jié)果表明:不管實(shí)際條件按照傳統(tǒng)工程經(jīng)驗(yàn)的一味“以熱定電”及“以冷定電”都是不可取的,應(yīng)根據(jù)項(xiàng)目的負(fù)荷情況、當(dāng)?shù)啬茉磧r(jià)格、市政條件等來(lái)確定經(jīng)濟(jì)性最優(yōu)的三聯(lián)供方案;天然氣價(jià)格對(duì)三聯(lián)供系統(tǒng)容量配置有很大影響,天然氣價(jià)格越高,其經(jīng)濟(jì)性和適用性越低;在實(shí)際天然氣價(jià)格2.4元/Nm3時(shí),動(dòng)漫園最優(yōu)三聯(lián)供系統(tǒng)方案是全年運(yùn)行時(shí)以冷定電原則下的的40%;一次能源消耗最小的配置為以電定冷/熱配置原則下的30%。 本文提出三種常規(guī)分供方案,與最優(yōu)三聯(lián)供方案進(jìn)行比較,結(jié)果表明根據(jù)優(yōu)化模型確定的動(dòng)漫園能源系統(tǒng)方案具有更好的節(jié)能性、環(huán)保性和經(jīng)濟(jì)性。本工作為生態(tài)城園區(qū)整體能源系統(tǒng)方案選擇和優(yōu)化提供了相關(guān)數(shù)據(jù)及理論基礎(chǔ)。
[Abstract]:Green building is a building that uses resources efficiently in the whole life cycle. Developing green buildings, saving energy resources and protecting environment is the development direction and inevitable requirement of Chinese architecture. Building energy consumption simulation is the most important task and important technical means of building energy saving design. With the wide application of natural gas and the continuous improvement of environmental protection requirements, the cogeneration of cold, heat and electricity has become one of the indispensable energy supply modes in Chinese cities. It has the advantages of reasonable energy utilization, high comprehensive efficiency, good economy and good environmental protection. The advantages of cooling and heating load distribution are flexible. CCHP is an energy system based on the concept of energy cascade utilization, which takes natural gas as primary energy and generates electric energy and available heat / cold energy at the same time. The purpose of CCHP is to improve the energy efficiency of the system. Reduce the emission of harmful gases such as CO2SO2. This paper introduces the calculation methods of building energy consumption and compares and analyzes all kinds of energy consumption simulation software, summarizes the present situation of energy consumption simulation at home and abroad, puts forward a new generation building energy consumption simulation software user interface based on EnergyPlus, and briefly describes its performance characteristics and application. Using EnergyPlus and DesignBuilder software to simulate the energy consumption in the area of the ecological city animation park to obtain the accurate dynamic load and energy consumption of the cold heat and electricity based on the actual running time. The advantages of energy saving, environmental protection and comprehensive efficiency can only be brought into full play in the system of cold, heat and electricity supply under reasonable configuration and operation mode. In this paper, a new idea is put forward based on the existing methods of simply using electric heating and thermoelectric configuration, that is, considering the configuration of system capacity and operation strategy for economic evaluation. In this paper, the optimization evaluation model is established with the minimum annual cost of the whole life cycle (LCC) as the main objective function, and the optimal evaluation of energy system configuration and operation is considered synthetically, such as the maximum net present value, the minimum exergy economic coefficient and the reasonable investment recovery period, etc. Determine the best system scheme. The results show that the local energy price should be based on the load of the project, regardless of whether the actual conditions are based on the traditional engineering experience of "heating the electricity" or "using the cold to fix the electricity". Municipal conditions are used to determine the optimal triple supply scheme for economy; the price of natural gas has a great impact on the capacity allocation of the triple supply system. The higher the natural gas price, the lower its economy and applicability; when the actual natural gas price is 2.4 yuan / Nm3, The optimal triple power supply system scheme of animation park is 40% under the principle of cooling electricity while running throughout the year, and the lowest primary energy consumption is 30% under the principle of electric cooling / heat allocation. In this paper, three conventional schemes are proposed, which are compared with the optimal triple scheme. The results show that the energy system scheme of animation park determined by the optimization model has better energy saving, environmental protection and economy. This work provides the relevant data and theoretical basis for the selection and optimization of the overall energy system of the Eco-city Park.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TU83

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 梁哲誠(chéng);基于廣東公共建筑的分布式能源系統(tǒng)的優(yōu)化設(shè)計(jì)及經(jīng)濟(jì)性分析[D];廣東工業(yè)大學(xué);2013年

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本文編號(hào)：1822252