本文關(guān)鍵詞： 噴霧 冷卻 等溫壓縮 傳熱 壓縮空氣儲(chǔ)能　出處：《液壓與氣動(dòng)》2017年12期 　論文類(lèi)型：期刊論文

【摘要】：壓縮空氣儲(chǔ)能(CAES)是一種大規(guī)模儲(chǔ)能技術(shù),可以用于調(diào)節(jié)城市電力供需,緩解用電高峰電力短缺,減少電網(wǎng)容量建設(shè)。目前,儲(chǔ)能技術(shù)逐漸開(kāi)始應(yīng)用于城市,當(dāng)電價(jià)下降時(shí),采用電池儲(chǔ)存電力,價(jià)格上升時(shí),釋放電力,利用峰谷電價(jià)差實(shí)現(xiàn)盈利。與電池相比,CAES容量大(100 MWh,電池小于10 MWh)、環(huán)保(無(wú)重金屬污染),使用壽命長(zhǎng)。但由于儲(chǔ)能效率過(guò)低,通過(guò)電價(jià)差盈利空間小,投資回收期長(zhǎng)是限制其商業(yè)應(yīng)用的重要因素之一。目前,多數(shù)壓縮空氣儲(chǔ)能系統(tǒng)都基于絕熱壓縮,大約有一半的電力被轉(zhuǎn)化成了熱量并耗散。由于壓縮時(shí)空氣的溫度上升,導(dǎo)致壓縮功增加,并轉(zhuǎn)化得到更多的熱。許多研究聚焦在增強(qiáng)壓縮空氣的散熱來(lái)達(dá)到等溫壓縮。本研究提出將微米級(jí)(10~100μm)水霧噴入壓縮空氣與之混合,吸收壓縮熱,降低壓縮空氣溫度,以實(shí)現(xiàn)等溫。通過(guò)實(shí)驗(yàn)對(duì)壓縮空氣壓力,體積和溫度的變化特性進(jìn)行了分析。對(duì)于總體積為0.94 L的壓縮腔,當(dāng)壓縮比為2時(shí),水霧冷卻后,壓縮功從177.9 J/循環(huán)(絕熱)下降到121.2 J/循環(huán),且效率達(dá)到88.7%(絕熱61.6%)。
[Abstract]:Compressed air energy storage (CAESs) is a large-scale energy storage technology, which can be used to regulate the supply and demand of urban power, alleviate the shortage of peak electricity consumption, and reduce the capacity of power grid. At present, energy storage technology is gradually applied in cities, when the electricity price drops, Using batteries to store electricity, when prices rise, release electricity and make a profit by using the peak and valley price difference. Compared with the battery, CAES has a large capacity of 100 MWhs, a battery less than 10 MWhW, environmental protection (no heavy metal pollution, long service life), but because of the low energy storage efficiency, At present, most compressed air energy storage systems are based on adiabatic compression. About half of the electricity is converted into heat and dissipated. As the temperature of the air rises during compression, the compression power increases. Many studies have focused on the enhancement of the heat dissipation of compressed air to achieve isothermal compression. In this study, water mist was injected into compressed air and mixed with it to absorb the compression heat and reduce the temperature of compressed air. The variation of compressed air pressure, volume and temperature was analyzed by experiments. For the compressing chamber with a total volume of 0.94 L, when the compression ratio was 2:00, the water mist cooled, The compression power is reduced from 177.9 J / cycle (adiabatic) to 121.2 J / cycle, and the efficiency reaches 88.7% (adiabatic 61.6%).
【作者單位】： 自動(dòng)化科學(xué)與電氣工程學(xué)院北京航空航天大學(xué);氣動(dòng)熱力儲(chǔ)能與供能北京市重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(51375028,51605013)
【分類(lèi)號(hào)】：TH41;TK02
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本文編號(hào)：1503201