【摘要】：區(qū)域供冷系統(tǒng)可同時(shí)服務(wù)于多種類別的建筑,不同類別的建筑有其各自的負(fù)荷特性,如果各建筑間采用不同的組合形式,對(duì)于整個(gè)區(qū)域供冷系統(tǒng)而言其負(fù)荷狀況也會(huì)有所不同,眾所周知,一個(gè)相對(duì)平穩(wěn)的負(fù)荷波動(dòng)狀況可以很大程度上降低制冷機(jī)組的開(kāi)啟和關(guān)閉次數(shù),如果區(qū)域供冷系統(tǒng)的負(fù)荷波動(dòng)狀況能降到最低,可以很大程度提高制冷機(jī)組的制冷效率。因而研究區(qū)域供冷系統(tǒng)的最優(yōu)建筑組合形式對(duì)于區(qū)域供冷系統(tǒng)制冷效率的提高有很大的意義。本文選擇夏熱冬冷地區(qū)和夏熱冬暖地區(qū)作為研究區(qū)域,以辦公建筑、住宅建筑、賓館建筑以及商場(chǎng)建筑四類典型建筑作為區(qū)域供冷系統(tǒng)的供冷對(duì)象,對(duì)不同情況下區(qū)域供冷系統(tǒng)最優(yōu)建筑組合形式進(jìn)行研究。首先,本文建立了辦公、住宅、賓館以及商場(chǎng)建筑的典型建筑模型,并且運(yùn)用Design Builder軟件對(duì)四類典型建筑進(jìn)行模擬分析,最終得到制冷季內(nèi)各類建筑的逐時(shí)冷負(fù)荷,并在此基礎(chǔ)上對(duì)各類建筑的冷負(fù)荷狀況進(jìn)行分析,繼而得出了各類建筑冷負(fù)荷特征對(duì)區(qū)域供冷系統(tǒng)的影響。其次,本文在考慮人為約束條件的前提下,以區(qū)域供冷系統(tǒng)負(fù)荷波動(dòng)指數(shù)為目標(biāo)函數(shù)建立了區(qū)域供冷系統(tǒng)建筑組合模型,并編制了遺傳算法程序?qū)Σ煌闆r下區(qū)域供冷系統(tǒng)最優(yōu)建筑組合形式進(jìn)行求解。然后,本文對(duì)建立的建筑組合模型的適用性進(jìn)行了分析,分析得出雖然建筑組合模型是在四類典型建筑的基礎(chǔ)上建立的,不過(guò)只要該模型稍作修改,就可以讓它運(yùn)用于幾乎所有區(qū)域供冷系統(tǒng)關(guān)于建筑組合形式的前期規(guī)劃。最后,本文從區(qū)域供冷系統(tǒng)所包含的建筑種類數(shù)出發(fā)進(jìn)行分析,研究了12種情況下區(qū)域供冷系統(tǒng)的最優(yōu)建筑組合形式,并對(duì)最優(yōu)建筑組合形式下系統(tǒng)的裝機(jī)容量指數(shù)、負(fù)荷頻率以及時(shí)間頻率進(jìn)行了分析,得到了不同情況下空調(diào)運(yùn)行時(shí)各個(gè)時(shí)刻的實(shí)際所需冷量與設(shè)計(jì)冷負(fù)荷的關(guān)系,可用作將來(lái)指導(dǎo)設(shè)備選型和確定空調(diào)系統(tǒng)設(shè)計(jì)方案等。
[Abstract]:Regional cooling system can serve many kinds of buildings at the same time. Different types of buildings have their own load characteristics. If each building adopts different combination form, its load condition will be different for the whole regional cooling system. As we all know, a relatively stable load fluctuation condition can greatly reduce the number of opening and closing of the refrigeration unit, if the load fluctuation of the regional cooling system can be reduced to a minimum, The refrigeration efficiency of the refrigeration unit can be greatly improved. Therefore, it is of great significance to study the optimal building combination of the regional cooling system for the improvement of the cooling efficiency of the regional cooling system. This paper chooses the hot summer and cold winter area and the hot summer and warm winter area as the research area, taking the office building, the residential building, the hotel building and the shopping mall building as the cooling objects of the regional cooling system. The optimal combination form of regional cooling system is studied under different conditions. Firstly, the typical building models of office, residential, hotel and shopping mall are established, and four typical buildings are simulated and analyzed by using Design Builder software. Finally, the hourly cooling load of all kinds of buildings in the refrigeration season is obtained. Based on the analysis of the cooling load of various buildings, the influence of various building cooling load characteristics on the regional cooling system is obtained. Secondly, on the premise of considering the artificial constraints, this paper establishes the building combination model of regional cooling system by taking the load fluctuation index of regional cooling system as the objective function. A genetic algorithm program is developed to solve the optimal building combination of regional cooling system under different conditions. Then, this paper analyzes the applicability of the building combination model, and concludes that although the building combination model is built on the basis of four types of typical buildings, but only if the model is slightly modified. It can be applied to almost all regional cooling systems on the building combination form of the preliminary planning. Finally, based on the analysis of the number of building types contained in the regional cooling system, this paper studies the optimal combination form of the regional cooling system in 12 cases, and gives the installed capacity index of the system under the optimal combination form. The load frequency and time frequency are analyzed, and the relationship between the actual cooling requirement and the design cooling load is obtained under different conditions, which can be used to guide the selection of equipment and determine the design scheme of air conditioning system in the future.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU831

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