单罐斜温层蓄热性能实验研究
发布时间：2018-11-02 12:03
【摘要】：热电联产机组参与电网调峰对我国电网的安全运行及发展新能源、提高可再生能源利用率十分必要。热电联产的装机比例日益增加,风能、光能等新能源持续发展,但由于目前电网的消纳能力差,可再生能源利用率很低,提高热电联产机组调峰能力具有十分重要的意义。蓄热技术可以在能源的生产与使用之间起到缓冲的作用,将其应用于热电联产供热调峰当中,能够提高机组的调峰灵活性。以中低温蓄热材料为储热介质,在机组产热量较多时蓄热,供热不足时用这部分热量补充供热,在一定程度上解耦机组电热负荷。本文主要分析了热电联产机组的热电负荷特性;研究适用于热电联产供热调峰的中低温蓄热装置;设计并搭建单罐斜温层蓄热性能研究的实验系统。进行了蓄热装置在不同流量下的80/40℃蓄热实验;80/40℃放热实验;80℃静置散热实验;罐体内部存在斜温层时的静置散热实验。根据以上实验结果分析:蓄/放热过程罐体不同位置的温度分布情况;散热过程罐内温度和斜温层随时间变化;比较不同流量下罐体中心位置温度随时间变化情况;比较不同流量下罐内温度分布随时间变化情况和斜温层厚度,并得出相应结论。在多种实验条件下,蓄热罐体内部始终保持良好的斜温层,因此单罐斜温层蓄热具有非常好的稳定性。
[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，
本文编号：2305956
[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，
本文编号：2305956
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