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.
In his previous article, the author wrote about GE’s profitability challenge after the takeover of Alstom’s GT business. In this part, he talks about ABB’s reheat combustor design and proposes a new design wherein fuel would be injected at an angle.
This is the first part of a series by the author where he discusses GE’s takeover of Alstom GT business and GE’s challenge of profitability. In his upcoming articles, he talks about a proposed design for reheat combustor and how GE could redesign the Alstom/ABB reheat gas turbine.
To ensure reliable, trouble-free operation for extended periods of time, the seal must operate in a properly controlled environment. This requires that the seal be installed correctly, so that the seal faces maintain perfect contact and alignment, and that proper lubrication and cooling be provided.
Balance in critical equipment isn’t an optional goal for manufacturing facilities. It is a necessary part of keeping production running and preventing unplanned shutdowns. It’s particularly important for facilities with high demand for products, such as is the case for the Oman India Fertilizer Company S.A.O.C. (OMIFCO). OMIFCO is a joint venture business established to operate a state-of-the-art two train ammonia-urea fertilizer manufacturing facility in the Sur industrial estate in the Sultanate of Oman.
Antioxidants (AO) are critical components in turbine oil formulations and largely determine the life and performance of a lubricant. Even though these sacrificial warriors make up about 1% of a turbine oil formulation, they protect the base oil from oxidation and rapid deterioration.
This article is the first of a series on how natural gas is affecting the North American industrial gas turbine market, and whether the new gas turbines and future combined cycles can make the future more promising.
Located in southern India, the 2X1,000 GW Kudankulam power plant has set a rather poor precedent for policy makers trying to sell the importance of putting up new commercial nuclear plants to the people of a power-starved country.
(Richard Thomas dealt with shaft rubs in two blog posts: Back to Basics - Rubbing or not and Differentiating between fluid induced instability (oil whirl and oil whip) and a rub. In today's post, he answers a reader's question on how rubs can sometimes lead to reduced vibration amplitude)
Use pressurized dual seals whenever possible in applications that can potentially be hazardous to personnel safety and/or the environment. The use of pressurized dual seals, which require a safe, non-toxic barrier fluid at a higher pressure than the process fluid at the seal face, will positively ensure that the process fluid will be contained, since a positive barrier fluid to process fluid differential pressure will be maintained by the flush system.
Use clean, sweet buffer gas whenever process gas is sour and/or can contain debris to optimize oil seal MTBF (in excess of 120 months).
The entrance of sour gas and/or gas with debris into the oil seal system will expose the seal oil system to the following issues that can reduce seal MTBF, cause unscheduled shutdowns and pose a safety hazard (gas release to the plant environment):
Below are excerpts from a case study presented by Bladimir Gomez, supervisor for rotating equipment engineering at PDVSA CRP Refinery and Barry Snider, president of Small Hammer Incorporated at the 2013 Turbomachinery Symposium at Houston.
In the first part, the author highlighted how VFD technology has become a common feature in compressors. In this article, he explains why the VFD can be advantageous despite being an expensive addition to the compressor system.