【摘要】：熱電聯(lián)產(chǎn)機(jī)組參與電網(wǎng)調(diào)峰對我國電網(wǎng)的安全運(yùn)行及發(fā)展新能源、提高可再生能源利用率十分必要。熱電聯(lián)產(chǎn)的裝機(jī)比例日益增加,風(fēng)能、光能等新能源持續(xù)發(fā)展,但由于目前電網(wǎng)的消納能力差,可再生能源利用率很低,提高熱電聯(lián)產(chǎn)機(jī)組調(diào)峰能力具有十分重要的意義。蓄熱技術(shù)可以在能源的生產(chǎn)與使用之間起到緩沖的作用,將其應(yīng)用于熱電聯(lián)產(chǎn)供熱調(diào)峰當(dāng)中,能夠提高機(jī)組的調(diào)峰靈活性。以中低溫蓄熱材料為儲熱介質(zhì),在機(jī)組產(chǎn)熱量較多時蓄熱,供熱不足時用這部分熱量補(bǔ)充供熱,在一定程度上解耦機(jī)組電熱負(fù)荷。本文主要分析了熱電聯(lián)產(chǎn)機(jī)組的熱電負(fù)荷特性;研究適用于熱電聯(lián)產(chǎn)供熱調(diào)峰的中低溫蓄熱裝置;設(shè)計(jì)并搭建單罐斜溫層蓄熱性能研究的實(shí)驗(yàn)系統(tǒng)。進(jìn)行了蓄熱裝置在不同流量下的80/40℃蓄熱實(shí)驗(yàn);80/40℃放熱實(shí)驗(yàn);80℃靜置散熱實(shí)驗(yàn);罐體內(nèi)部存在斜溫層時的靜置散熱實(shí)驗(yàn)。根據(jù)以上實(shí)驗(yàn)結(jié)果分析:蓄/放熱過程罐體不同位置的溫度分布情況;散熱過程罐內(nèi)溫度和斜溫層隨時間變化;比較不同流量下罐體中心位置溫度隨時間變化情況;比較不同流量下罐內(nèi)溫度分布隨時間變化情況和斜溫層厚度,并得出相應(yīng)結(jié)論。在多種實(shí)驗(yàn)條件下,蓄熱罐體內(nèi)部始終保持良好的斜溫層,因此單罐斜溫層蓄熱具有非常好的穩(wěn)定性。
[Abstract]:It is necessary for cogeneration units to participate in peak-shaving for the safe operation of power grid and the development of new energy and to improve the utilization rate of renewable energy in China. The proportion of heat and power cogeneration is increasing day by day, and new energy sources such as wind energy and light energy are developing continuously. However, due to the low absorption capacity of power grid and the low utilization rate of renewable energy, it is of great significance to improve the peak-shaving capacity of cogeneration units. Heat storage technology can play a buffer role between the production and use of energy, and it can be applied to heat and power cogeneration heating and peak shaving, which can improve the flexibility of unit peak regulation. The medium and low temperature heat storage material is used as the heat storage medium, when the unit produces more heat, and when the heat supply is insufficient, this part of heat is used to supplement the heat supply, and the electric heat load of the unit is decoupled to a certain extent. This paper mainly analyzes the thermoelectric load characteristics of cogeneration units, studies the middle-low temperature heat storage device suitable for cogeneration heating and peak-shaving, and designs and builds an experimental system to study the heat storage performance of single tank inclined temperature layer. Experiments of heat storage at 80 / 40 鈩，

本文編號：2305956