Below are excerpts from the tutorial, “Shop rotordynamic testing: Options, objectives, benefits and practices” presented by John A Kocur, Jr., of ExxonMobile Research and Engineering and C Hunter Cloud of BRG Machinery Consulting at METS III in Qatar.
Performance tests should be divided into tests for drivers and driven equipment. For drivers, especially gas turbines, output and efficiency are subject to manufacturing tolerances. Consequently, if meeting a contractually agreed upon power level is critical, a factory performance test is advisable.
Just a few months ago, the oil & gas industry wallowed in the comfort of oil priced well over $100 a barrel, a range it had enjoyed for many years. Fast forward to early February 2015: those attending the GE Oil & Gas Annual Meeting (AM) in Florence, Italy faced prices below the $60 mark. The shockwaves from this tectonic shift were still reverberating as the conference began.
With so many sources of renewable generation now on the grid, and lots more on the way, it’s important to gain an understanding of how future dispatchable resources will need to behave in order to accommodate increased renewable generation. A recent study shed some light in this area.
General Electric held its first Intelligent Platforms User Summit in Orlando, Florida in late October. It gathered together users and industry leaders to discuss the implications of the Industrial Internet.
Combustion turbine upgrades often prove to be an economical path to add capacity and flexibility to a combined cycle facility or fleet. From aeroderivatives to large-frame machines, nearly all gas turbine OEMs provide upgrade packages for all sizes of turbines.
Fluid film bearings are widely used in rotating equipment applications. However, they have a footprint and maintenance-intensive nature that puts them out of alignment with the desire of owners and operators to cut costs and reduce environmental impact.
A landmark agreement on commercial nuclear power was signed between India and the US during the recently concluded visit of US President Barack Obama. The agreement tied up the loose ends that had emerged after the original agreement signed by President Bush during his visit to the country.
Integrally geared compressors were first introduced for plant and instrument air service in the 1960s. The term “integrally geared compressor” (IGC) refers to a large driving gear (bull gear) which is coupled to a driver.
Kevin Kochirka, Consulting Application Engineer at ABB Inc., made a case for power plant operators to choose vendors who offer an open control system based on his experience working at Pacific Klamath Energy Cogeneration Plant. The plant has two Siemens 501 FD3 CTs (Base Load Combined Cycle), one Alstom Steam Turbine. For peaking generation it has two Pratt Whitney FT8 Twinpacs (Simple Cycle) with an SCR ‐ Anhydrous Ammonia.
Below are excerpts given from a paper presented at Power Gen International, 2014, by Dan Burch, Steve Hiner, Jim Lenox, Tim Nicholas, Sarah Propp, of CLARCOR Industrial Air.
"By analyzing sites globally, it can be demonstrated that other factors play just as much a role in compressor health as the efficiency of the filter does. The size of the inlet house, the metals or plastics used for filter casings, and the media selection has as much to do with turbine performance as the efficiency of the filter.
GE has released the 16.5 MW NovaLT16, designed to provide 37% mechanical efficiency for pipeline compression and 36% efficiency for simple-cycle power generation. Further specs, according to GE, include 80% efficiency for combined heat and power, 99% availability and a guarantee of 25 ppm NOx.
Ask most people about innovation in bearings and they will mention magnetic bearings. Certainly, they deserve the spotlight. It seems that every turbine OEM and major bearing supplier has been eager to augment its arsenal with mag bearings.
Properly design and monitor quench systems for optimum seal reliability and to ensure that moisture does not enter the bearing housing. The proper function of seal quench systems is to remove solid particles from the lower seal face to prevent premature seal wear.
This is where we are on the atmospheric CO2, according to the recent IPCC 5th Assessment Report.
The worldwide CO2 emissions in 2013 were 36.1 Gt. The chart shown below models a full spectrum of scenarios included in the assessment along with a 2014 estimate. Currently, we appear to be tracking on the RCP8.5 trajectory.
In the second part of this series, the author wrote about ABB’s reheat combustor and proposed a new design for GE machines. In this article, he hints at how GE could put together the existing technology with little risk and make the amalgamation a success.