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在化肥生产中,工艺冷却用水所消耗的能量均占全厂总能耗的2.8％。在开展节能技术改造降低生产能耗中,对如何合理用水,节约用水是一项不可忽视的节能措施。而一般小化肥厂对冷却水的计量手段都较差,绝大部分厂在上水总管或支管上没有装设水表,即使有了装置也很易失灵。由于在管道中水的流速一般较难测得其数值,所以也就难以做到在生产中对冷却水的定量、合理的分配和使用。为了解决这个问题,我们根据流体力学的一些理论,推导出估算管道内水的流量的经验式,利用该式,可较为简捷地计算出流经某管道的流量。
In the fertilizer production, the energy consumed by the process cooling water accounts for 2.8% of the total energy consumption of the whole plant. In carrying out energy-saving technological transformation to reduce production energy consumption, how to rationally use water and save water is a non-negligible energy-saving measure. In general, small chemical fertilizer plants have poor measurement methods for cooling water, and most plants do not have water meters installed on the mains or branches of the water supply system. Even if they have devices, they are very prone to failure. Since the flow rate of water in a pipeline is generally difficult to measure, it is difficult to quantitatively and reasonably distribute and use the cooling water in production. In order to solve this problem, according to some theories of fluid mechanics, we derive an empirical formula for estimating the flow of water in a pipeline. By using this formula, the flow through a pipeline can be calculated simply and easily.