Abstract: A method of operating a Kalina cycle power generation system, includes directing a stream of superheated binary working fluid to a turbine where it is expanded to produce power. A first portion of the expanded binary working fluid is directed to a distiller/condenser where it is transformed into a first concentration binary working fluid, having a first concentration of a component of the binary working fluid, and a second concentration binary working fluid, having a second concentration of the component. At least the first concentration binary working fluid is directed to a regenerative heat exchanger. A second portion of the expanded binary working fluid is also directed to the regenerative heat exchanger. The first concentration binary working fluid is transformed into a vaporized binary working fluid and the second portion of expanded binary working fluid is transformed into a feed binary working fluid in the regenerative heat exchanger.

Abstract: A method of operating a Kalina cycle power generation system, includes directing a stream of vaporized binary working fluid to a turbine where it is expanded to produce power. A first portion of the expanded binary working fluid is directed to a distiller/condenser having multiple heat exchangers where, using the multiple heat exchangers, it is transformed into a first concentration binary working fluid, having a first concentration of a component of the binary working fluid, and a second concentration binary working fluid, having a second concentration of the component. At least the first concentration binary working fluid directed to a regenerative heat exchanger. A second portion of the expanded binary working fluid is directed to the regenerative heat exchanger where the first concentration binary working fluid is transformed into a vaporized binary working fluid and the second portion of expanded binary working fluid is transformed into a feed binary working fluid.

Abstract: A method of operating a power generation system is provided. The system includes a turbine, a regenerative heat exchanger, and a vapor generator. The turbine receives a stream of working fluid and expands the working fluid to produce power. The regenerative heat exchanger has a plurality of condensing heat exchangers which transfer heat from the expanded working fluid to condense the expanded working fluid. The vapor generator vaporizes the condensed portions of working fluid to form the stream of working fluid. In operating the system, a respective portion of the expanded working fluid is directed to each of the condensing heat exchangers, and the amount of condensed working fluid at at least one of the condensing heat exchangers is regulated.

Abstract: A method of operating a power generation system is provided. The system includes a turbine, a regenerative heat exchanger, a boiler, and a superheater. The turbine receives a stream of first working fluid and expands the first working fluid to produce power. The regenerative heat exchanger receives a stream of the expanded first working fluid from the turbine and a stream of second working fluid, for example from the RHE or DCSS of a Kalina type system. The exchanger transfers heat from the expanded first working fluid to the second working fluid to heat the second working fluid and condense the expanded first working fluid. The boiler receives and vaporizes a stream of the condensed first working fluid. The superheater receives and superheats the vaporized stream of first working fluid and the heated stream of second working fluid to form the stream of first working fluid.

Abstract: A method of operating a power generation system, such as a Kalina cycle power generation system, which includes a turbine, regenerative heat exchanger and vapor generator, is provided. The turbine receives a stream of first working fluid and expands the first working fluid to produce power. The regenerative heat exchanger receives a stream of the expanded first working fluid from the turbine and a stream of second working fluid, and transfers heat from the expanded first working fluid to the second working fluid to heat the second working fluid and condense the expanded first working fluid. The vapor generator receives a stream of the condensed first working fluid and transfers heat from an external heat source to the condensed first working fluid to heat the condensed working fluid for use in the stream of first working fluid.

Abstract: A method of operating a power generation system is provided. The system includes a turbine, a distiller/condenser, a boiler, and a superheater. The turbine expands a superheated multicomponent working fluid to produce power. The distiller/condenser transforms the expanded multicomponent working fluid into first and second concentration multicomponent working fluids. The first concentration multicomponent working fluid has a first concentration of a component of the multicomponent working fluid. The second concentration multicomponent working fluid has a second concentration of the component which is different than the first concentration. The boiler vaporizes a feed multicomponent working fluid. The superheater superheats the vaporized feed multicomponent working fluid to form the superheated multicomponent working fluid. In operating the system, the temperature of the vaporized multicomponent working fluid is sensed.

Abstract: A method for capturing working fluid which includes a hazardous component and is discharged from a power generating system, includes directing the discharge to a container. There, the discharged working fluid is combined with a liquid in which the hazardous component is soluble to form a less hazardous mixture.

Abstract: A novel class of bridged indicator dyes is disclosed which possess absorption in the infrared region of the electromagnetic spectrum. These bridged indicator dyes are useful as light-absorbing, pH-sensitive optical filter agents in diffusion transfer photographic processes adapted to be performed in the presence of ambient light and to diffusion transfer products useful in such processes. These indicator dyes will also find utility in titrations and other analytical techniques and products where pH-sensitive indicator dyes are employed and absorption of infrared is useful.

Abstract: An integrated OMT/filter assembly is small, low cost and not easily susceptible to mechanical or environmental damage. The integrated OMT/filter assembly has a body formed at least in part of conductive material, the body including a first port for receiving a transmit signal, a second port for feeding the transmit signal to an antenna and for receiving a receive signal, and a third port for receiving the receive signal. A first waveguide segment joins the first and second ports, and a second waveguide segment joins second and third ports, the first and second waveguide segments having a portion in common. A filter element is disposed within at least one of the first and second waveguide segments.

Abstract: A method and system of frequency multiplying a signal having amplitude modulation using a frequency multiplier operated at a bias voltage that is less than its saturation mode voltage is described. Prior to amplification, the amplitude modulated signal is pre-distorted to compensate for distortion caused by the frequency multiplier. A first pre-distortion phase converts the amplitude modulated signal into a corresponding square root signal to compensate for a first distortion type. A second pre-distortion phase pre-distorts the square root signal to compensate for the distortion caused by biasing the frequency multiplier at a voltage less than the saturation voltage of the multiplier. As a result, a signal that is amplitude modulated can be multiplied by a frequency multiplier.

Abstract: A one-way and two-way multichannel radio frequency transmission system and method employing a sectorized broadcasting technique is described. The system and method reduces the effective bandwidth of the broadcast signal by multiplexing available channels of signals into a set of formatted independent digital bitstreams--where each of the bitstreams includes all or a portion of the available channels provided by the system program provider. The independent bitstreams are transmitted to transmitting towers using point-to-point transmission methods. The transmitting towers phase modulate and amplify the bitstreams to generate a set of independent modulated signals. Each transmitter tower includes an antenna for broadcasting the modulated signals to a sectorized service area--each sector in the service area receiving a different one of the set of independent modulated signals. The antenna includes a set of individual antenna panels--each panel for broadcasting one of the set of modulated signals.

Abstract: A soft touch switch comprises a switch housing, a first soft touch sensor, and a second soft touch sensor. The switch housing has an outer surface which is curved and an inner surface. The first sensor is disposed inside the switch housing adjacent a first portion of the inner surface, and the second sensor is disposed inside the switch housing adjacent a second portion of the inner surface. The first and second sensors are disposed in different planes inside the switch housing. The soft touch switch is especially suited for industrial applications such as punch presses and has enhanced safety, ergonomic, and freedom of installation features.

Abstract: A floor mounted doorstop employing an inner spacer having a first end and a second end, the first end disposed over the floor surface, an outer spacer having a first end and a second end, the first end disposed over the floor surface, and the outer spacer disposed around the inner spacer, a first rigid washer disposed over the second ends of said inner and outer spacers, a disk of a first height formed of a compressible material and having a first aperture formed therein disposed over the first rigid washer; a bushing of the first height disposed in the first aperture, a second rigid washer disposed over the disk, and fastening means for fastening the inner spacer, the outer spacer, the first rigid washer, the disk and the second rigid washer to the surface, the fastening means including means for compressing the outer spacer to a selected compression.

Abstract: A system for providing security on an interactive television system. Two sets of interactive data, with time stamps, are separately sent to a remote location. At the remote location, the time stamps are checked against a remote clock, a time difference being noted for both sets of data. The two time differences are compared to determine if one set of data has been delayed as compared to the other. Non-delayed data can be used to update a game score for an interactive game. After the game is completed, the remote clock is compared to a central clock. the difference between the two clocks are compared to the time difference for non-delayed data to determine whether the entire aggregate of interactive data was delayed.

Abstract: A selector switch includes a knob, a bezel and a retaining clip. The retaining clip is mounted on the knob and secures the knob to the bezel. The retaining clip is C-shaped and has a tab centrally disposed on the retaining clip. When the tab is pressed by a tool, the retaining clip contracts and the knob may be detached from the bezel. The tab can be accessed through a slot between the bezel and the knob by a screwdriver. The knob, bezel and retaining clip can be made of plastic.

Abstract: An elongate, flexible sensor for sensing an electrically conductive liquid, such as water, has two flexible electrodes extending along the sensor and two flexible sleeves extending therealong and being attached adhesively to each other along the sensor. Each electrode is a ribbon made from a carbon-filled, silicone rubber material. Each sleeve extends around an associated one of the electrodes and is braided from a filamentary, polyester material so as to define multiple apertures enabling such a liquid reaching the sensor to pass through the sleeves so as to cause a short circuit between the electrodes.

Abstract: A control system for a fuel-fired furnace and more specifically the control of the stoichiometric ratio of the combustion process occurring within the furnace of a steam generating power plant. The control system, when so employed, is capable of regulating the distribution of air flow to the combustion process such that the formation of oxides of nitrogen are maintained at acceptable levels. The control system includes in general a stoichiometric subsystem that determines the mass flow rate of air required to maintain the stoichiometric ratio within the combustion process; an override protection subsystem which ensures control precedence of the windbox-to-furnace pressure differential over the stoichiometry subsystem; and an overfire air subsystem that acts to apportion air flow amongst the various levels of overfire air within the boiler.

Abstract: A public facsimile machine is arranged so that it will only receive an incoming facsimile if the facsimile is preceded by a predetermined security code. In addition, the public facsimile machine is associated with an enhanced facsimile service so that the capabilities provided by such a service, for example, broadcasting a facsimile to a plurality of destinations, may be offered to a user of the public facsimile machine.