Lower stiffness ratio can improve seal life in centrifugal pumps

Conventional centrifugal pumps, those with mechanical seals, need to provide a stable environment for the seal to obtain the maximum life from the seal. Part of this stability comes from keeping the seal faces parallel to each other with minimum vibration. In single stage overhung pumps, the shaft is a cantilevered beam with a circular cross section supported by the bearings with a concentrated load, the impeller, at the end.

APR Energy’s Libyan power contract wins 200MW expansion

APR Energy has recently been awarded the single largest contract by Libyan government in the fast-track power industry following a 200MW expansion of its original 250MW contract. The expansion, which brings the contracted total generation capacity to 450MW, supplements the 250MW of mobile gas turbines originally contracted, said a statement from the Florida-based company.

GE's LM6000 achieves over 26 million operating hours

GE is celebrating "20 years of powering progress around the world" as its LM6000 aeroderivative gas turbine that achieved more than 26 million operating hours. The technology of the LM6000 is based on GE's CF6-80C2 aircraft engine; and GE said it has shipped more than 1,000 LM6000 units to customers globally, gaining "four times more experience than all other competing gas turbines in its class combined".

Siemens completes 430 MW Knapsack II combined cycle plant ahead of schedule

Siemens Energy has completed the Knapsack II combined cycle power plant with a capacity of 430 MW on behalf of Statkraft Markets six weeks ahead of schedule. Siemens built the entire power plant, located in Hürth near Cologne, Germany, as a turnkey project and delivered the main components, including an F-Class gas turbine as well as a steam turbine, generator, and heat recovery steam generator.

Gas turbine operators can learn from wind gearbox problems

The incursion of renewables into the mainstream was the main topic of discussion at the recent Turbo Expo 2013 that took place in San Antonio, Texas. The subject invoked many comments during the conference which was sponsored by ASME's International Gas Turbine Institute (IGTI).

Alstom GT26 gas turbine proves to be effective with shale gas

Alstom’s GT26 gas turbine can already handle shale gas and other variable fuels as internal calculations show that shale gas and LNG will be within the company’s hydrogen gas experience range. In Algeria, Alstom could prove the C2+ variation tolerance of its turbine by running the combustion chambers with 15 percent C2+. At the VGB Congress in Friedrichshafen, Germany held recently, Dr. Klaus Knapp, group head, combustor operations and emissions with Alstom, said a hydrogen content of up to 15 percent volume can be handled by the company’s GT26 turbines.

APR Energy starts up new 200MW gas turbine project in Uruguay

APR Energy has recently started commercial operation of its 200MW temporary power generation project in Uruguay, divided across two sites in La Tablada and Punta del Tigre. The two revamped plants, together with the additional 100MW of turbines installed by APR Energy last July, now help increase Uruguay's power production capacity by a total of 300MW.

Dresser-Rand and Honeywell to create integrated control platform

Dresser-Rand, a supplier of rotating equipment solutions to the oil, gas, petrochemical, power and process industries, recently reached an agreement with Honeywell to grant plant managers control of not only turbomachinery, but all plant equipment using a single completely integrated control platform.

Little Barford power station gets greener after £100m upgrade

The Little Barford Power Station at Gallow Hill, south of St. Neots in Bedfordshire, has recently been given a £100million upgrade to be more environmentally friendly. The power station is part of RWE Generation and was opened in 1996. At full capacity could generate 680MW of electricity – enough to power half a million homes.

Six Siemens F-class gas turbines to power two Algerian plants

Siemens has recently been awarded a contract to supply power plant components, including six F-class gas turbines, for the Ras Djinet and Ain Arnat combined cycle power plants in Algeria. The clients are Daewoo E&C Co., Ltd and Hyundai Engineering Co. Ltd, Korean companies that are building the two power plants for Sociéte Algérienne de Production de l’Electricité (SPE), the state-run energy provider in Algeria.

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