A method for operating a gas turbine engine (10), including a first compressor (14), a second compressor (16), and a turbine (20), coupled together in serial flow arrangement. The method includes channeling compressed airflow (53) discharged from the first compressor through an intercooler (50) having a cooling medium flowing therethrough, operating the intercooler such that condensate is formed in the intercooler from the compressed airflow, and channeling the condensate to an inlet (26,30) of the first or second compressor to facilitate reducing an operating temperature of the gas turbine engine.

Methods and apparatus for operating gas turbine engines

The present invention relates to a modular hearing aid having a base unit and a detachable earmold. A battery, and earmold tip and a receiver can be integrated with the earmold. The earmold can also include a removably attached module. The module can have a shell, electronics, a receiver or a microphone. A hearing aid also includes a flexible hearing aid tip having a vibration isolator portion and a mushroom shaped tip portion. The vibration isolator portion mechanically decouples a receiver from a hearing aid base unit while the mushroom shaped tip portion provides an acoustic seal in the ear canal of a user. The internal components of a hearing aid can be potted to attenuate vibrations created by the receiver during operation.

Disposable modular hearing aid

An earpiece auditory device is provided. The earpiece auditory device includes a behind-the-ear component (30). The behind-the-ear component being shaped to fit behind an ear of a user. The behind-the-ear component includes a module (33) that includes processing circuitry. The earpiece auditory device also includes a completely-in-canal component (10), the completely-in-canal component being shaped to fit into the ear canal of the user in such a manner as to touch the bony portion of the ear canal of the user. The completely-in-canal component includes an ear mold (11). The earpiece auditory device includes a connector (20) physically coupling the behind-the-ear component to the completely-in-canal component. The connector (20) includes at least one end detachably coupled to the behind-the-ear component or the completely-in-canal component.

Bte/cic auditory device and modular connector system therefor

A process for increasing the specific output of a combined cycle power plant and providing flexibility in the power plant rating, both without a commensurate increase in the plant heat rate, is disclosed The present invention demonstrates that the process of upgrading thermal efficiencies of combined cycles can often be accomplished through the strategic use of additional fuel and/or heat input In particular, gas turbines that exhaust into HRSGs, can be supplementally fired to obtain much higher steam turbine outputs and greater overall plant ratings, but without a penalty on efficiency This method by and large defines a high efficiency combined cycle power plant that is predominantly a Rankine (bottoming) cycle Exemplary embodiments of the present invention include a load driven by a topping cycle engine, powered by a topping cycle fluid which exhausts into a heat recovery device

High density combined cycle power plant process

A turbine engine is disclosed. The turbine engine may have a first compressor configured to pressurize inlet air, and a second compressor configured to further pressurize the inlet air. The turbine engine may also have a cooling circuit fluidly located to cool the inlet air after the inlet air is pressurized by the first compressor and before the inlet air is further pressurized by the second compressor. The cooling circuit may have a first heat exchanger configured to transfer heat from the inlet air to a fuel of the engine, and a second heat exchanger configured to transfer heat from exhaust of the engine to the fuel of the engine.

Turbine engine having fuel-cooled air intercooling

A steam transformer (200) receives steam through a steam inlet (203), and the steam is mixed in a mixing zone (231) with water entering through a water inlet (205). Steam cooled by contact with the water exits the steam transformer through a cold steam outlet (216). Between the mixing zone (231) and the cold steam outlet (216) is positioned a demister (214) that restricts the passage of water droplets. The steam transformer (200) is used to condition the steam temperature in steam turbine and combined cycle turbine facilities when adjustment of steam temperature is required, such as for cold starts of turbines. The steam transformer (200) may be installed into a bypass circuit or directly inline. A number of differing configurations and designs are disclosed.

Hot to cold steam transformer for turbine systems

The invention relates to a device for preheating combustibles in combined gas and steam turbine installations. Said device comprises at least one steam generator (5, 6, 7) for heating, evaporating and superheating feed water, which has a feed water preheater (15, 16, 43, 51), an evaporator (8, 9, 10) and a superheater (11, 12, 13), at least part of the heated feed water being used for preheating combustibles in a combustible preheater, which can be supplied with feed water of a predetermined temperature by a feed water supply line (35, 36, 37, 56, 58, 60, 73) Once the combustible has been heated, the cooled feed water can be drained using a feed water drain line (57, 59, 61, 74). The aim of the invention is to configure a device of this type so that it can be used in different gas turbine installations and its heating capacity can be rapidly and cost-effectively adapted to predetermined combustible preheating requirements. To achieve this, the combustible is preheated in stages (48, 49, 50), which can be activated individually as required and through which the combustible can successively pass.

Device and method for preheating combustibles in combined gas and steam turbine installations

A waste-heat steam generator of a gas-turbine and steam-turbine system. The steam-generating heat content in the expanded working medium from the gas turbine is used for the steam turbine connected into a water/steam loop. Condensed steam from the steam turbine is supplied as condensate to the water/steam loop. A partial flow is diverted from the water-steam loop for selectively preheating the condensate or the fuel with the partial flow. To achieve high efficiency, irrespective of the fuel used for the gas turbine, when oil is used as the fuel for the gas turbine, the partial flow from the water/steam loop is used for condensate preheating. When gas is used as the fuel for the gas turbine, the partial flow is used for fuel preheating. A heat exchanger for the selective preheating either of the gas-turbine fuel or of the condensate with the partial flow is provided.

Gas and steam turbine system and operating method

The aim of the invention is to provide an electric household appliance, especially a dishwasher, comprising a child-proof lock which has a simple and reliable design and is easy to operate. According to the invention, a pin (70) or slide which can be moved between two positions blocks, in a first position, the movement of the locking member (12), thereby activating the child-safety feature, and in a (15) second position of the pin (70), does not block the movement of the locking member (12), thereby deactivating the child-safety feature.

Electric Household Appliance Having a Child Safety Feature

A combined gas and steam turbine system includes a steam turbine having a water/steam loop and a high-pressure stage in the water/steam loop The high-pressure stage has a preheater and a high-pressure heater connected downstream of the preheater A gas turbine has an exhaust gas side A steam generator is connected downstream of the exhaust gas side of the gas turbine The steam generator includes a firing system producing flue gases flowing in a given direction, the preheater, the high-pressure heater, an intermediate superheater connected downstream of the high-pressure stage, and a medium-pressure heater connected parallel to the high-pressure stage The medium-pressure heater is disposed in the steam generator between the high-pressure heater and the preheater, as seen in the given flow direction of the flue gases

Erich Schmid

Papers

Hot to cold steam transformer for turbine systems

Device and method for preheating combustibles in combined gas and steam turbine installations

Gas and steam turbine system and operating method

Electric Household Appliance Having a Child Safety Feature

Combined gas and steam turbine system