本文選題：熱電聯(lián)產(chǎn) + 集中供熱�。� 參考：《中國電機(jī)工程學(xué)報》2017年19期

【摘要】：針對濕冷機(jī)組提出一種新型的乏汽余熱利用供熱系統(tǒng),通過機(jī)組高背壓、熱泵、熱網(wǎng)低溫回水3種成熟技術(shù)的結(jié)合,實(shí)現(xiàn)多熱源的熱網(wǎng)水梯級加熱流程的構(gòu)建。針對新系統(tǒng)提出了機(jī)組末級安全和新型熱電聯(lián)產(chǎn)系統(tǒng)能效評價指標(biāo)及方法。以2×300MW濕冷機(jī)組為例構(gòu)建系統(tǒng)模型,分析關(guān)鍵參數(shù)對系統(tǒng)能效及經(jīng)濟(jì)性的影響,結(jié)果表明,機(jī)組抽凝比xec越低,旁通水流量G1越大,系統(tǒng)供熱等效電Weq.s及單位供熱量總成本ct越低,且隨著熱網(wǎng)回水溫度?1的降低,系統(tǒng)能效及經(jīng)濟(jì)性得到進(jìn)一步改善,成果用于指導(dǎo)濕冷機(jī)組乏汽余熱利用系統(tǒng)設(shè)計。
[Abstract]:In this paper, a new type of heat supply system with waste heat from spent steam for wet cooling unit is put forward. Through the combination of three mature technologies: high back pressure, heat pump and low temperature backwater in heat network, the cascade heating process of hot water network with multiple heat sources can be constructed. Based on the new system, the evaluation index and method of the last stage safety of the unit and the energy efficiency of the new cogeneration system are put forward. Taking 2 脳 300MW wet cooling unit as an example, the system model is constructed, and the influence of key parameters on system energy efficiency and economy is analyzed. The results show that the lower the xec ratio, the bigger the bypass water flow rate G1 is. The lower the Weq.s and the total cost per unit of heat supply are, the more energy efficiency and economy of the system are improved with the decrease of backwater temperature of heating network. The results can be used to guide the design of waste heat utilization system of wet cooling unit.
【作者單位】： 燕山大學(xué)建筑工程與力學(xué)學(xué)院;
【基金】：河北省高等學(xué)�？茖W(xué)技術(shù)研究重點(diǎn)項目(ZD2016109) 燕山大學(xué)博士基金項目(B811)~~
【分類號】：TK115;TM621
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本文編號：1809336