6 11/2024 The efficiency’s in the details Text & Picture: Körting Hannover GmbH Badenstedter Str. 56 30453 Hannover With more than 150 years of experience in the field of ejector technology, Körting Hannover supplies highly efficient and reliable solutions for the shipbuilding industry. Körting ejectors are used in a broad variety of shipbuilding applications wherever low investment costs, simplicity in design, maintenance-free operation and reliability are important. Let’s have a closer look at the main area where ejectors are used in shipbuilding. Bilge ejectors are fluidic devices without mechanical drives, dynamic gaskets or any moving parts. Therefore, they are not subjected to mechanical wear, require no maintenance and dry running isn’t possible. Even an operation free of cavitation can be ensured if a design is project related. The functionality of selfpriming bilge ejectors is solely based on fluid dynamics, driven by water supplied by the mechanical pumps from the ship’s own system. In order to achieve optimum efficiency, the design of a bilge ejector should always be based on the performance data at the design point. The effective pressure data in relation to the connections must be taken into consideration. How to avoid mistakes when designing bilge ejectors A frequent mistake in technical specifications is to treat bilge ejectors in the same way as mechanical pumps. This ignores the fact that the behaviour of the performance curves of bilge ejectors and mechanical pumps is totally different. The design of an ejector always depends on the motive pressure related to the suction pressure and the discharge pressure. Nevertheless, you will find a number of vendors dealing with ejectors by catalogue. Therefore, you need to ensure you receive a quote for bilge ejectors with a constant total manometric head only. Lower the operating costs The standardisation of bilge ejectors has an adverse affect and results in a loss of efficiency. On the other hand, detailed planning at an early stage leads to lower investment and operating costs. However, when selecting a bilge ejector the necessary drive energy and consequently the right mechanical pump should be taken into consideration. The wrong choice in this context, based on the pure investment costs only, could lead to higher operating expenses during the whole life time. The efficiency’s in the details. Our experts at Körting Hannover will support you in all of your challenges. We look forward to your visit in hall A2, booth 133 or write to us at sales@koerting.de. Bilge ejectors: The efficiency’s in the details Anzeige Hall A2, Booth 133
RkJQdWJsaXNoZXIy NzYxOTg=