A maritime sulfur dioxide emissions switch monitoring system has an emissions sampling apparatus that is self-powered and requires a low power for operation. The emissions sampling apparatus has sensitive and selective chemical sensing technology capable of quantification of sulfur dioxide and carbon dioxide. Relative humidity, temperature and pressure sensors, in addition to sulfur dioxide and carbon dioxide are used for monitoring the exhaust gas. Filters are used to eliminate solid and liquid aerosolized components in marine engine exhaust.

The invention relates to an arrangement (1, 15), comprising a turbomachine (2, 16) with a compressor (3) having an outlet (7), and with a bleed air line (9), through which a leakage flow can flow and which is connected via a controllable valve (8) to the outlet (7) of the compressor (3), for supplying the leakage flow to a unit, characterized in that the unit is designed as a fan (17), jet pump (10) or pump which can be driven by the leakage flow. The invention also relates to a method for operating the arrangement (1, 15).

A land based or marine vessel based system for generating power from syngas utilizes a feedstock of waste material acquired from waste dumps, municipalities, and/or ports of call of the marine vessel. The marine vessel or land based system can be retrofitted to be fueled by the waste material. The syngas is used to provide propulsive and/or electrical power for the marine vessel or the land based system. The waste material is not just a feedstock for the syngas but is provided with payment from the ports of call to take the waste material away. The marine vessel also collects garbage floating on the waterway along the voyage between the various ports of call for use as feedstock in the production of syngas. The modular syngas generation system further generates H.sub.2 from the syngas. The H.sub.2 generated thereby is used to fuel an H.sub.2 fuel cell for the generation of electrical power.

This is an application for a utility patent for a zero emissions turbine, suitable for use in aerospace, power generation, industrial, and marine applications, that runs on the combustion of liquid hydrogen and liquid oxygen and which is cooled by liquid oxygen. It is unique in that its only emissions will be steam, water vapor, pure oxygen, and ice crystals, with no pollutants or greenhouse gases of any kind. It is also unique in that it uses no air intake, no compressor, and simplified shaft and auxiliary drive systems. It has a unique tank and pump system that runs on electric motors and specialized lubricating systems. These turbines can be designed with powerful and reliable operating specifications with greatly reduced fuel consumption and greatly improved power-to-weight ratios.

An engine enclosure for containing a gas turbine engine is provided. An exemplary engine enclosure includes features that improve noise and thermal attenuation, reduce the weight of the enclosure, and provide for more accessible access points to the interior volume of the engine enclosure.

A land based or marine vessel based system for generating power from syngas utilizes a feedstock of waste material acquired from waste dumps, municipalities, and/or ports of call of the marine vessel. The marine vessel or land based system can be retrofitted to be fueled by the waste material. The syngas is used to provide propulsive and/or electrical power for the marine vessel or the land based system. The waste material is not just a feedstock for the syngas but is provided with payment from the ports of call to take the waste material away. The marine vessel also collects garbage floating on the waterway along the voyage between the various ports of call for use as feedstock in the production of syngas. The modular syngas generation system further generates H.sub.2 from the syngas. The H.sub.2 generated thereby is used to fuel an H.sub.2 fuel cell for the generation of electrical power.

According to one aspect of the present disclosure, a floating vessel, particularly an LNG carrier, is described. The floating vessel comprises: a gas turbine engine-generator assembly configured to generate a first electrical power and to supply the first electrical power to an electrical distribution system; a steam turbine engine-generator assembly configured to generate a second electrical power and to supply the second electrical power to the electrical distribution system; a propulsion system configured to propel the floating vessel using a propulsion power supplied from the electrical distribution system, wherein the gas turbine engine-generator assembly is configured to generate a maximum first electrical power between 10 MW and 18 MW, particularly between 14 MW and 15 MW at 25 C. According to a further aspect, a method of operating a floating vessel is described.

A propulsion system for an unmanned underwater vehicle includes at least one fuel storage tank. A plurality of combustors is connected to the at least one fuel storage tank. Each of the combustors is connected to a turbine via a corresponding nozzle. An output shaft is connected to the turbine and configured to output rotational energy from the turbine.

An electrical machine including a moveable permanent magnet configured to generate a first magnetic field. A stator including windings configured to excite a second magnetic field. A moveable inter-pole component located between the permanent magnet component and the stator, the inter-pole component comprising an array of magnetic inter-pole pieces. The speed of movement of the inter-pole component is controlled to set a magnetic gear ratio between the first and second magnetic fields. Also a gas turbine engine, propulsor or thruster incorporating the electrical machine.

The invention concerns land-based gas turbine plants with a multi-spool gas turbine arrangement for generating electrical power to supply a load (200). The invention comprises at least three spools (10a-10c). Each of the at least three spools (10a-10c) comprises a shaft (11a-11c), a compressor (C1-C3) and a turbine (T1-T3). Each one of the shafts (11a-11c) of the at least three spools (10a-10c) are independently rotatable with respect to each other. The invention further comprises electrical generators (G1-G3) mounted on each of the shafts (11a-11c) of the at least three spools (10a-10c), the output power of the generators being independently controllable and at least 60 percent of a total output power supplied to said load (200) in a form of electrical and rotational power is generated by the at least three generators (G1-G3) in the form of electrical energy.