本文關(guān)鍵詞： 大型化工企業(yè) 制冷系統(tǒng) 節(jié)能 優(yōu)化改造　出處：《華北電力大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：制冷技術(shù)在提高生產(chǎn)工藝技術(shù)水平的同時(shí),所引起的嚴(yán)峻的能源和環(huán)境問(wèn)題也受到越來(lái)越多的關(guān)注。對(duì)化工企業(yè)的用能大戶制冷系統(tǒng)進(jìn)行優(yōu)化設(shè)計(jì)和節(jié)能改造,對(duì)企業(yè)降低運(yùn)行成本,提升產(chǎn)品質(zhì)量,創(chuàng)造效益以及落實(shí)國(guó)家節(jié)能減排政策和推動(dòng)低碳經(jīng)濟(jì)發(fā)展方面具有重要的現(xiàn)實(shí)意義。本課題主要從節(jié)能的角度出發(fā),首先通過(guò)總結(jié)和分析近年來(lái)樂凱膠片股份有限公司冷凍水制備系統(tǒng)的運(yùn)行數(shù)據(jù),指出了系統(tǒng)運(yùn)行過(guò)程中存在的問(wèn)題。然后提出了制冷系統(tǒng)優(yōu)化設(shè)計(jì)的基本原則,總結(jié)并分析了制冷系統(tǒng)優(yōu)化設(shè)計(jì)的主要途徑和措施,給出了冷凍水制備系統(tǒng)節(jié)能優(yōu)化技術(shù)路線圖。其次建立了基于熱力學(xué)第一定律的螺桿式蒸氣壓縮式制冷機(jī)組的穩(wěn)態(tài)仿真模型,分析了運(yùn)行過(guò)程中冷卻水進(jìn)口溫度和冷凍水出口溫度變化時(shí)對(duì)制冷機(jī)組性能的影響,為制冷系統(tǒng)的節(jié)能優(yōu)化方案的實(shí)施提供技術(shù)支持。最后確定了制冷系統(tǒng)的節(jié)能優(yōu)化改造方案,方案實(shí)施后不但取得較好的節(jié)能效益,也帶來(lái)了比較大的經(jīng)濟(jì)效益,2014年水的消耗量降低65.5%,水單耗降低68.5%,電單耗下降8.7%,全年節(jié)約費(fèi)用為121.7萬(wàn)元,實(shí)現(xiàn)綜合能耗同比下降5.23%。
[Abstract]:The severe energy and environmental problems caused by refrigeration technology have been paid more and more attention. The optimization design and energy saving transformation of large energy consumption refrigeration system in chemical enterprises have been carried out. It is of great practical significance for enterprises to reduce operating costs, improve product quality, create benefits, implement national policies on energy saving and emission reduction and promote the development of low-carbon economy. By summarizing and analyzing the operation data of refrigerated water preparation system in Lecai Film Co., Ltd in recent years, this paper points out the problems existing in the operation of the system, and then puts forward the basic principles of optimal design of refrigeration system. The main ways and measures of optimal design of refrigeration system are summarized and analyzed. The technical roadmap of energy saving optimization of freezing water preparation system is given. Secondly, the steady state simulation model of screw steam compression refrigeration unit based on the first law of thermodynamics is established. The influence of the inlet temperature of cooling water and the outlet temperature of chilled water on the performance of refrigeration unit is analyzed. This paper provides technical support for the implementation of the energy saving optimization scheme of refrigeration system. Finally, the energy saving optimization reform scheme of the refrigeration system is determined. After the implementation of the scheme, not only good energy saving benefits are obtained, In 2014, the consumption of water was reduced by 65.5%, the consumption of water by 68.5%, the consumption of electricity by 8.7 yuan, and the cost saved by one million two hundred and seventeen thousand yuan in the whole year.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ051.5

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