{"id":2395,"date":"2019-04-12T09:00:43","date_gmt":"2019-04-12T09:00:43","guid":{"rendered":"https:\/\/tecnologiaparalaindustria.com\/?p=2395"},"modified":"2025-07-22T12:18:41","modified_gmt":"2025-07-22T12:18:41","slug":"do-you-understand-the-savings-that-variable-speed-drives-for-pumping-equipment-can-offer-your-plant","status":"publish","type":"post","link":"https:\/\/tecnologiaparalaindustria.com\/en\/entiendes-los-ahorros-que-los-variadores-de-velocidad-para-equipos-de-bombeo-pueden-ofrecer-a-tu-planta\/","title":{"rendered":"Do you understand the savings that variable speed drives for pumping equipment can offer your plant?"},"content":{"rendered":"

Variable speed drives for pumping equipment have many advantages compared to butterfly valves when it comes to flow regulation. That is to say, they offer good flow control, great energy savings, and reduced operating costs if applied correctly in all pump systems with a high relative static head.\u00a0<\/span><\/p>\n

However, the growing popularity of the variable speed drive has brought with it a host of incorrect applications. In these instances, the end-user receives higher energy bills instead of savings as a result of installing a variable speed drive.\u00a0<\/span><\/p>\n

This is due to inadequate design and selection of the pumping system. Achieving energy efficiency in pumping equipment begins with the correct selection of the pump with variable speed drives. In this case, the first thing to do is ask about the process demand that is expected to be met. For example:<\/span><\/p>\n

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  1. Do we need to regulate the flow continuously or in steps?\u00a0<\/span><\/li>\n
  2. Can we use batch pumping?<\/span><\/li>\n
  3. What are the necessary flow rates and how are they distributed over time?<\/span><\/li>\n<\/ol>\n

    The recommended approach is to create a duration diagram, which encapsulates the answers to these questions. In this diagram, each point on the solid curve is interpreted differently, indicating how many hours per year the flow rate exceeds the value on the axis. This diagram is fundamental for understanding your plant's pumping needs most of the time without installing variable speed drives for pumping equipment.<\/span><\/p>\n

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    With this information, you can proceed with the pipework design. If, for instance, the maximum flow rate only occurs for short periods of time, it may not be practical to install a large diameter pipe. On the other hand, if you are operating at maximum flow rates for long periods of time, you must consider this fact when specifying the pipe diameter.<\/span><\/p>\n

    After the design of the pipe system is completed, the system curve must be calculated. This curve indicates the amount of head or pressure a pump needs to drive a specific flow through the pipe system. Head has two components: <\/span><\/p>\n