發(fā)布時間：2018-01-24 02:03

  本文關(guān)鍵詞： 區(qū)域適應(yīng)性 自然供冷 空調(diào)系統(tǒng) 冷卻塔 優(yōu)化　出處：《上海交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著我國經(jīng)濟(jì)的不斷發(fā)展，節(jié)能減排的重要性正在日益凸顯。工業(yè)建筑作為社會用能大戶，節(jié)能的重?fù)?dān)更是責(zé)無旁貸�？照{(diào)系統(tǒng)的能耗占到建筑能耗的30%~50%，更是節(jié)能改造或優(yōu)化的重點(diǎn)對象。 冷卻塔自然供冷技術(shù)，正是在氣象條件滿足要求時，利用室外冷源承擔(dān)系統(tǒng)部分或全部的負(fù)荷，進(jìn)而使空調(diào)系統(tǒng)達(dá)到節(jié)能的一種技術(shù)。而電子工業(yè)在中國的發(fā)展已有80多年，成為了國民經(jīng)濟(jì)的重要支柱。本文所針對的對象是電子廠房，其特點(diǎn)為需要全年供冷且系統(tǒng)負(fù)荷具全年穩(wěn)定、波動較小。在此背景下，本文以典型的電子廠房冷卻塔自然供冷空調(diào)系統(tǒng)為研究對象進(jìn)行了應(yīng)用分析、節(jié)能分析及經(jīng)濟(jì)性分析等方面的研究。 首先，根據(jù)系統(tǒng)的組成和特性，建立了部件的數(shù)學(xué)模型和電子廠房冷卻塔自然供冷空調(diào)系統(tǒng)的數(shù)字仿真器。在此基礎(chǔ)之上，，本文還設(shè)計了相應(yīng)的系統(tǒng)運(yùn)行模式控制策略、機(jī)組啟�？刂撇呗缘然究刂葡到y(tǒng)。 其次，根據(jù)所選取的具有典型氣象條件的6個城市的氣象數(shù)據(jù)，對電子廠房冷卻塔自然供冷系統(tǒng)在不同區(qū)域應(yīng)用的節(jié)能潛力進(jìn)行了研究和分析。針對自然供冷時數(shù)這一指標(biāo)的不足之處，提出了新的表征自然供冷系統(tǒng)節(jié)能潛力的指標(biāo)——自然供冷節(jié)能率。這一指標(biāo)能夠很好的排除系統(tǒng)全年負(fù)荷的干擾，對系統(tǒng)所存在的節(jié)能潛力進(jìn)行估計。 再次，本文分析了影響電子廠房冷卻塔自然供冷空調(diào)系統(tǒng)節(jié)能潛力的各大因素，并在建立的仿真器上測試了不同的優(yōu)化方法對系統(tǒng)自然供冷節(jié)能率的影響，包括冷凍水供水溫度設(shè)定值的改變、聯(lián)合供冷模式下冷卻水流量分配策略的優(yōu)化、系統(tǒng)供冷模式切換策略的優(yōu)化及設(shè)備（冷卻塔、板式換熱器）性能參數(shù)的優(yōu)化。 最后，為了分析各優(yōu)化方法是否適用于所有地區(qū)的電子廠房冷卻塔自然供冷空調(diào)系統(tǒng)，在仿真器上測試了6個典型城市的系統(tǒng)應(yīng)用同一優(yōu)化方法對系統(tǒng)自然供冷節(jié)能率的影響。研究結(jié)果表明，優(yōu)化方法帶來的節(jié)能潛力是隨著區(qū)域的不同而不同的。文中還選取了動態(tài)投資回報周期這一指標(biāo)對冷卻塔自然供冷空調(diào)系統(tǒng)的經(jīng)濟(jì)性進(jìn)行了簡單的研究，結(jié)果表明不同的地區(qū)回報周期也是不一樣的。
[Abstract]:With the continuous development of our economy, the importance of energy saving and emission reduction is becoming increasingly prominent. The energy consumption of air conditioning system accounts for 30% of the building energy consumption, and it is also the key object of energy saving transformation or optimization. Cooling tower natural cooling technology, when the meteorological conditions meet the requirements, the use of outdoor cold source to bear part or all of the system load. The electronic industry has been developed in China for more than 80 years and has become an important pillar of the national economy. The characteristics of this system are that it needs year-round cooling and the system load is stable throughout the year and the fluctuation is relatively small. Under this background, this paper takes the typical natural cooling air conditioning system of cooling tower of electronic powerhouse as the research object for application and analysis. Energy saving analysis and economic analysis and other aspects of research. Firstly, according to the composition and characteristics of the system, the mathematical model of the components and the digital simulator of the natural cooling air conditioning system of the cooling tower of the electronic powerhouse are established. This paper also designs some basic control systems, such as system operation mode control strategy, unit start and stop control strategy and so on. Secondly, according to the selected meteorological data of 6 cities with typical meteorological conditions. The energy saving potential of natural cooling system of cooling tower of electronic workshop in different regions is studied and analyzed. A new index, natural cooling energy saving rate, is proposed to characterize the energy saving potential of natural cooling system. This index can eliminate the disturbance of the system's annual load and estimate the energy saving potential of the system. Thirdly, this paper analyzes the factors that affect the energy saving potential of the natural cooling air conditioning system of the cooling tower of the electronic powerhouse, and tests the influence of different optimization methods on the natural cooling energy saving rate of the system on the established simulator. It includes the change of the set value of the refrigerated water supply temperature, the optimization of the cooling water flow distribution strategy under the combined cooling mode, the optimization of the system cooling mode switching strategy and the equipment (the cooling tower). Optimization of performance parameters for plate heat exchangers. Finally, in order to analyze whether the optimization methods are applicable to the natural cooling air conditioning system of the cooling tower of the electronic powerhouse in all regions. The effect of the same optimization method on the natural cooling energy saving rate of six typical cities was tested on the simulator. The energy saving potential brought by the optimization method is different with different regions. This paper also selects the dynamic return on investment cycle to study the economy of cooling tower natural cooling air conditioning system. The results show that different regions of the return cycle is also different.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TB494

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