Redesign of a steam turbine with unknown boundary conditions
August 17 2014 -
Several levels of overhaul are possible depending on time and money resources. When both are at a minimum, the redesign of one or several stages of aging turbomachinery can be an option while maintaining existing dimensions for the rotor and casing. However, when parts of the machine are no longer functional, the boundary conditions of these elements are unknown. This can make the redesign process complicated and time-consuming although it is still possible to restore the geometry and increase performance.
How inert gas service helps overcome seal oil leakage
June 27 2014 -
William E. Forsthoffer
The entrance of oil through the oil seals into refrigeration systems will reduce the capacity of the system and impact on process unit revenue. To ensure that seal oil does not enter the process loop and foul the chillers, it is essential that lube/seal oil reservoir level on all refrigeration ap
A well designed control console can help prevent shutdown
June 22 2014 -
William E. Forsthoffer
A minimum of one meter distance has to be specified between all oil system components to allow operator access, and to optimize system reliability. Access to all major components is essential to allow operator intervention to switch over to spared system compone
After determining how long you want the equipment to last and identifying the process and fluid properties, it is time to select the pump. Factors for minimum life cycle costs include installation, maintenance, energy, safety and environmental and possibly other considerations.
Finding an Advanced System to Design Supercritical CO2 Power Plants
April 7 2014 -
The supercritical CO2 power cycle is one of the most promising power technologies. It is not by chance though, because carbon dioxide (CO2) has a unique combination of attributes, such as a low critical temperature, an environmentally natural origin, a high standard of safety and a low cost. Carbon dioxide is also thoroughly studied, therefore there is sufficient information surrounding it. But on the other hand, the supercritical CO2 cycle has a high energy conversion factor, such as high thermal efficiency.