【摘要】：空調(diào)系統(tǒng)是建筑耗能的主要部分，大約占建筑總能耗的60%，在日益注重節(jié)能的今天，建筑節(jié)能受到越來越多的重視。然而現(xiàn)在部分空調(diào)系統(tǒng)的運行存在很大的問題，，空調(diào)系統(tǒng)大部分時間都處于部分負荷下運行，而部分負荷下空調(diào)系統(tǒng)的運行狀態(tài)并沒有達到最優(yōu)，造成了嚴重的浪費。本文通過模擬動態(tài)負荷下空調(diào)系統(tǒng)的運行，找到動態(tài)負荷下使空調(diào)系統(tǒng)處于最節(jié)能狀態(tài)的控制策略，從而保證空調(diào)系統(tǒng)能以比較合理的狀態(tài)運行。 本文主要從空調(diào)系統(tǒng)動態(tài)運行的角度對空調(diào)系統(tǒng)的能耗進行研究。用MATLAB/Simulink工具箱對空調(diào)系統(tǒng)的各組成部分建立仿真模型，然后將這些部件的仿真模型組合構成整個空調(diào)系統(tǒng)的仿真模型。文中選取影響空調(diào)系統(tǒng)能耗的關鍵參數(shù)冷凍水出口溫度、冷凍水流量、冷卻水進口溫度、冷卻水流量為模型變量，通過空調(diào)系統(tǒng)模型的運行數(shù)據(jù)擬合得出空調(diào)系統(tǒng)能耗與四個變量的函數(shù)關系式，然后得出定負荷下使空調(diào)系統(tǒng)能耗最小的四個變量的值，進而得出動態(tài)負荷下空調(diào)系統(tǒng)最優(yōu)運行狀態(tài)下四個變量隨負荷變化的輸入曲線。在此基礎上，對空調(diào)系統(tǒng)的動態(tài)能耗進行仿真，得到空調(diào)系統(tǒng)節(jié)能的最優(yōu)運行狀態(tài)。 通過以上的研究可以得出，動態(tài)負荷下空調(diào)系統(tǒng)處于最優(yōu)運行時最大節(jié)能率可達30%，冷水機組、冷凍水泵、冷卻水泵節(jié)能效果比較顯著。本文的研究結果對實際中空調(diào)系統(tǒng)的優(yōu)化運行具有一定的參考價值。
[Abstract]:Air conditioning system is the main part of building energy consumption, which accounts for about 60% of total building energy consumption. Nowadays, more and more attention is paid to building energy efficiency. However, there are a lot of problems in the operation of some air conditioning systems. Most of the time the air conditioning system is running under partial load, but the operating state of the air conditioning system under partial load is not optimal, which has caused a serious waste. By simulating the operation of air conditioning system under dynamic load, the control strategy of making air conditioning system in the state of most energy saving under dynamic load is found in this paper, so as to ensure that the air conditioning system can run in a more reasonable state. In this paper, the energy consumption of air conditioning system is studied from the point of view of dynamic operation of air conditioning system. The simulation model of each component of air conditioning system is established with MATLAB/Simulink toolbox, and then the simulation model of these components is combined to form the simulation model of the whole air conditioning system. The key parameters affecting the energy consumption of air conditioning system, such as the outlet temperature of refrigerated water, the flow rate of frozen water, the inlet temperature of cooling water and the flow rate of cooling water, are selected as model variables. By fitting the operating data of the air conditioning system model, the functional relationship between the energy consumption of the air conditioning system and the four variables is obtained, and then the value of the four variables that make the energy consumption of the air conditioning system minimum under the constant load is obtained. Then the input curves of four variables with load are obtained under the optimal operating condition of air conditioning system under dynamic load. On this basis, the dynamic energy consumption of the air conditioning system is simulated, and the optimal operation state of the air conditioning system is obtained. Through the above research, it can be concluded that under the dynamic load, the maximum energy saving rate of the air conditioning system in the optimal operation can reach 30%, and the energy saving effect of the chillers, chilled water pumps and cooling pumps is quite remarkable. The results of this paper have certain reference value for the optimization operation of air conditioning system in practice.
【學位授予單位】：華中科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU831

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