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What is the relationship between the flow, head and efficiency of the pump?

04 May 2024Email

           There is a close relationship between the flow, head and efficiency of the pump, which together determine the working performance and economy of the pump, in this article, the pump manufacturer Changsha Zoomlian pump industry will explain the relationship between the flow, head and efficiency of the pump in detail, so that you will have a basic understanding of the parameters of the pump.

 

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           First, the flow rate refers to the volume of water transported by the pump per unit time, usually expressed in cubic meters per hour or cubic feet per minute. The lift is the mechanical pressure that the pump needs to overcome to transfer the material from the low to the high level, expressed in kg/cm or feet/ton. Efficiency is a measure of the relationship between the energy consumed by the pump to transfer the material in a specific situation and the benefit produced, usually expressed as a percentage.

           In practical applications, the flow, head and efficiency of the pump are mutually affected. In general, when the head of the pump increases, the flow will decrease accordingly, and vice versa. This is because the power of the pump is certain, and when a higher head needs to be overcome, more energy is needed to push the water upward, resulting in a reduction in flow. At the same time, this change will also directly affect the efficiency of the pump. If the operating state of the pump is not at its optimal efficiency point, its efficiency will decrease, which will increase the operating cost of the pump.

           In addition, according to the pump theory and formulas, such as the calculation formula of shaft power, the relationship between flow, head and efficiency can be seen. Shaft power is proportional to the product of flow and head, and inversely proportional to efficiency. Therefore, when designing and selecting the pump, these factors need to be considered comprehensively to find the best working point to make the pump run in an efficient and economical state.

           All in all, there is a close relationship between the flow, head and efficiency of the pump. In practical applications, it is necessary to select the right pump according to the specific working conditions and needs, and adjust its running state to achieve the best working effect.

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