Archive for the ‘Energy Efficiency’ Category

Siemens extends synchronous-reluctance drive systems

Tuesday, April 24th, 2018 von admin

Siemens is extending its portfolio of Simotics synchronous-reluctance motors to include the two new shaft heights, AH90 and AH225. With these new additions, the company is addressing calls from renowned manufacturers of pumps.

The motors are available in a power range of 0.55 to 45 kW, and now also with rated speeds of 1,500 and 3,000 min1. In conjunction with the recently launched Sinamics Reluctance Control License, precise encoderless closed-loop torque control is possible down to a standstill. The license enables field-oriented (vector) closed-loop control even when at a standstill – reliably eliminating the possibility of the synchronous motor “stalling” at any time even if the load inertia is not known.

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Converter handling simplified by new module for wireless commissioning

Tuesday, April 17th, 2018 von admin

The new Sinamics G120 Smart Access Module enables the wireless connection of mobile devices such as tablets, smartphones or laptops over WiFi to the Sinamics G120, Sinamics G120C and Sinamics G120P pump converter series, making for considerably simpler converter handling.

The module is set up in a few simple steps using a conventional web browser and any standard operating system. The web server functionality eliminates the need to download any additional software. With its intuitively structured user interface and menu guidance, the module offers outstanding user convenience.

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New plunger pump head reaches up to more than 1,000 bar

Friday, April 13th, 2018 von admin

The plunger pumps feature an integrated gear, which enables very compact construction with maximum efficiency.

For the purpose of upgrading a cracker in a Chinese refinery a total of five plunger pump skids should be brought into operation by Lewa. Those in charge of the project opted for three triplex and two quintuplex plunger pumps in accordance with the API 674 standard. These pumps are equipped with the new KMC-L pump head with reduced clearance volume. This head consists of a single forging: The suction manifold is integrated as a result, allowing for a reduction in the sealing surface and thus in any potential leak points. An additional advantage is the fact that the suction side can be designed to handle backpressure, eliminating the need for a safety valve in the suction line. The new design makes it possible to realize pressures up to 1,075 bar. All pumps in use have been produced in Germany and mounted to a complete system in the Chinese plant.

These plunger pumps have a drive output of 260 kW and a flow rate of 25 m3/h. The suction pressure loss of the pump heads is very low, therefore a low suction pressure is needed and it is often possible to operate without a booster pump.

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Efficiency comparison pumping system

Thursday, January 25th, 2018 von admin

An increasing number of pumps are now being run using speed control in order to be able to define the dynamic volume flow. The pump’s quadratic characteristic causes the motor load to decrease rapidly at lower speeds, which results in the level of efficiency decreasing significantly. Using the diagrams, it can be seen that the ideal workload for the existing asynchronous motor is not reached, due to operation at partial loads (approx. 30%) and speeds (75%).

If the pump is then equipped with a PMSM motor that has an extended efficiency range including partial load operation, the level of efficiency can be increased by approx. 12% in this example and savings of more than EUR 250 per pump per year can be achieved (depending on the number of hours‘ operation per year).

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Green pumps for a green stadium

Tuesday, January 16th, 2018 von admin

Croke Park is a major Gaelic Athletic Association (GAA) sports venue located in Dublin that hosts events for a number of sports. Croke Park has been at the heart of Irish sporting life for over a hundred years, it is not only an iconic landmark but also the third largest stadium in Europe.

Since 1884 the site has been used primarily by the GAA to host Gaelic games, most notably the annual All-Ireland finals in Gaelic Football and Hurling. In honour of Archbishop Thomas Croke, one of the first GAA’s first patrons, the stadium was renamed to Croke Park.

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Sulzer doubles capacity of high voltage testing to improve repair times

Thursday, January 11th, 2018 von admin

Performance testing of high voltage motors and generators is usually carried out to determine benchmark data following a major repair. However, increasingly, customers are requiring this information as part of a problem diagnosis or to verify performance figures for a component when its essential data has been lost. To keep up with growing demand, Sulzer has made a major investment at its Falkirk Service Center (Scotland) that will enable the test-bed load capacity to be doubled.

Until now, the Falkirk site has used a 1,250 kVA diesel generator that operates through two step-up transformers to provide 3.3 – 11 kV via high voltage switchgear to the test cell. This setup ensures a reliable power source for testing that is not affected by local demand on the power grid. The new investment will add a 2,000 kVA and a 700 kVA generator to the site that will be synchronized through a 4000A LV switchboard, as well as a new 2,500 kVA transformer, that will double the capacity of the test bed.

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KSB: High-efficiency motor with integrated frequency inverter

Wednesday, December 20th, 2017 von admin

Prototype demonstrates potentia: The KSB Group has finished the prototype of a super-compact high-efficiency motor with an integrated frequency inverter. The 22-kW synchronous reluctance motor is a prototype featuring new semiconductor technology that provides completely new cooling management for eliminating heat from power electronics.

By integrating the frequency inverter into the motor, developers were able to reduce the unit volume by over 25 percent compared with the traditional design.

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New inline single stage centrifugal pump range

Monday, December 18th, 2017 von admin

The new SIL pump range was developed by Sulzer to meet the process requirements in various general and industrial applications. The SIL pump range is developed for pumping mainly clean and slightly contaminated liquids, viscous liquids up to 250 cSt, and fibrous slurries up to a consistency of 1%. The hydraulic design ensures efficient pumping with a low NPSHr (net positive suction head required) across the whole pump range.

The inline design together with the monoblock construction makes the SIL pump compact, rigid and reliable. The pump is available either with an integrated motor or with a standard IEC motor. SIL pumps are easy and fast to install both in vertical and in horizontal positions, and they require only a small installation space.

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Extensive additions to Siemens pump converter

Monday, November 27th, 2017 von admin
The Sinamics G120 is the universal drive to address the widest range of application requirements such as pump drives. Siemens is extending its portfolio of Sinamics G120 converters to include a new frame size, the FSG with voltage ranges from 380 to 480 volts (V) and from 500 to 690 V.
This addition means that the innovative PM240-2 Power Modules now cover the entire power range up to 250 kilowatts (kW). The extremely compact design and standard integrated optional features such as integrated DC link reactor or integrated filter to achieve category C2, enable substantial space and cost savings in the control cabinet.

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Energy-efficient pump systems for water supply

Friday, November 17th, 2017 von admin

With the use of the permanent magnet technology, oddesse pumps and motors factory developed an energy-efficient pumping system to support water supply companies to sustainably reduce energy consumption and thus contribute to the protection of the environment.

In the past, the efficiency of pump systems was often calculated by solely considering the efficiency of the pump. The efficiency of the motor, on the other hand, which is determined by the ratio between the electrical input and the mechanical output, has been largely ignored. However, the overall efficiency of the complete pumping system has an impact on the energy costs, which, as the decisive factor, account for more than 80% in the efficiency analysis. By optimizing the overall system, the greatest savings in electricity costs can be achieved.

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