【摘要】：我國北方地區(qū)冬季嚴(yán)寒，，城市中多采用集中供熱向用戶供暖。近三十年，無論是在供熱規(guī)模還是供熱技術(shù)方面，集中供熱事業(yè)都有很大的發(fā)展。隨著國民經(jīng)濟(jì)的快速發(fā)展，節(jié)能工作日益受到重視。很多研究者在集中供熱節(jié)能方面做了很多的工作和努力，提出了分布式供熱系統(tǒng)。 本文主要是對變頻泵的動力分布式供熱系統(tǒng)——分布式變頻供熱系統(tǒng)的研究。以張家口市橋西區(qū)集中供熱工程這一案例為基礎(chǔ)，進(jìn)行水力計算。通過對傳統(tǒng)供熱方式和分布式變頻供熱方式的水壓圖進(jìn)行分析，分別計算出采用傳統(tǒng)供熱方式熱源循環(huán)泵的參數(shù)，以及采用分布式變頻供熱方式時零壓差控制點在不同位置時的熱源循環(huán)泵和熱用戶分布泵的參數(shù)。對兩種供熱方式進(jìn)行能耗計算分析，得出無論零壓差控制點設(shè)在供熱系統(tǒng)任何位置都比傳統(tǒng)供熱方式節(jié)能的結(jié)論。 對工程案例分別采用時間性評價指標(biāo)、價值性評價指標(biāo)、比率性評價指標(biāo)進(jìn)行經(jīng)濟(jì)分析，得出采用分布式變頻供熱方式經(jīng)濟(jì)上具有很大優(yōu)勢的結(jié)論。 就我國目前國情來看，我國節(jié)能工作任重道遠(yuǎn)。因此，加強對分布式供熱系統(tǒng)的研究有助于我國集中供熱事業(yè)的發(fā)展。本文意在找到適合于工程實際的方法，以便對分布式系統(tǒng)的設(shè)計、運行、管理工作提供重要的參考依據(jù)。
[Abstract]:In northern China, the winter is severe, and central heating is often used in cities to provide heating to users. In the past 30 years, both in the heating scale and heating technology, the central heating industry has a great development. With the rapid development of national economy, energy-saving work has been paid more and more attention. Many researchers have done a lot of work and effort in energy saving of central heating, and put forward distributed heating system. This paper mainly studies the power distributed heating system of frequency conversion pump-distributed frequency conversion heating system. Based on the case of central heating project in Qiaoxi District of Zhangjiakou City, hydraulic calculation is carried out. By analyzing the water pressure diagram of the traditional heating mode and the distributed frequency conversion heating mode, the parameters of the heat source circulating pump using the traditional heating mode are calculated respectively. The parameters of the heat source circulating pump and the thermal user distribution pump with the zero pressure difference control point in different positions are also given in the distributed frequency conversion heating mode. The energy consumption of the two heating modes is calculated and analyzed. It is concluded that no matter the zero pressure difference control point is located in any position of the heating system, it is more energy efficient than the traditional heating method. The economic analysis of engineering cases is carried out by using the time evaluation index, the value evaluation index and the ratio evaluation index, and the conclusion is drawn that using the distributed frequency conversion heating mode has a great advantage in economy. In view of our current national conditions, China's energy-saving work has a long way to go. Therefore, strengthening the research on distributed heating system is helpful to the development of central heating system in China. The purpose of this paper is to find a method suitable for engineering practice in order to provide an important reference for the design, operation and management of distributed system.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU833

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