Abstract: Processes and systems for recovering heat and generating power. In some embodiments, the process can include combusting a fuel to produce a heated exhaust gas. Heat can be indirectly transferred from the heated exhaust gas to a pre-heated first aqueous fluid to produce a steam feed and a first cooled exhaust gas. At least a portion of the steam feed can be introduced into a steam turbine generator to produce power and a cooled first aqueous fluid. Heat can be indirectly transferred from the first cooled exhaust gas to a cooled second aqueous fluid to produce a heated second aqueous fluid and a second cooled exhaust gas. Heat can be indirectly transferred from the heated second aqueous fluid to the cooled first aqueous fluid to produce the pre-heated first aqueous fluid and an intermediately cooled second aqueous fluid.
Abstract: A tendon for mooring a tension leg platform having an uppermost pipe segment with a reduced diameter compared to at least one of the lower pipe segments. The tendon is watertight and sealed from the ocean environment, preferably filled with air at one atmosphere of pressure. One or more interior bulkheads may be included to divide the tendon into multiple compartments. The reduced outer diameter of the uppermost pipe segment provides reduced drag due to waves and currents and accommodates smaller tendon support buoys and vortex fairings, while the greater diameter of the lower pipe segment provides for increased tendon buoyancy.
Type:
Grant
Filed:
May 15, 2006
Date of Patent:
September 9, 2008
Assignees:
Modec International, Inc., Sea Engineering, Inc.
Inventors:
James R. Koon, Pieter G. Wybro, Robert M. Kipp