Abstract: The invention concerns a pulverized solid fuel, in particular coal, nozzle (10) comprising an inlet opening (12) for receiving a stream of coal/air mixture (16) and an outlet opening (14) for discharging said stream (16) into a burner. The inlet opening (12) and the outlet opening (14) are fluidically connected by a flow section (18), and a flow cross section (20) of the flow section (18) varies along a flow direction (22) of the stream of coal/air mixture (16). The flow section (18) comprises a flow constriction (24) with a, preferentially globally, minimal flow cross section (26). The flow constriction (24) is fluidically located between the inlet opening (12) and the outlet opening (14) and the flow section (18) has a flow cross section (20) that, in particular continuously, increases from the flow constriction (24) to the outlet opening (14).

Abstract: The invention concerns a pulverized solid fuel, in particular coal, nozzle (10) comprising an inlet opening (12) for receiving a stream of coal/air mixture (16) and an outlet opening (14) for discharging said stream (16) into a burner. The inlet opening (12) and the outlet opening (14) are fluidically connected by a flow section (18), and a flow cross section (20) of the flow section (18) varies along a flow direction (22) of the stream of coal/air mixture (16). The flow section (18) comprises a flow constriction (24) with a, preferentially globally, minimal flow cross section (26). The flow constriction (24) is fluidically located between the inlet opening (12) and the outlet opening (14) and the flow section (18) has a flow cross section (20) that, in particular continuously, increases from the flow constriction (24) to the outlet opening (14).

Abstract: Provided are methods and systems for hands free communication with a wearable telecommunication device configured to recognize a command associated with the audio message and executing the command by communicating wirelessly with at least one communication device or a mobile telecommunication system. The wearable wireless telecommunications headset includes a casing containing a speaker for receiving an audio message, a microphone for sending an audio message, transceiver and a processor programmed for voice recognition. Methods are provided for direct communication with a telecommunication system and also communicating with a telecommunications system via an intermediary local device.

Abstract: An apparatus (100) operative for purposes of detecting the presence of a coal rope within a coal delivery pipe (200) is provided. The apparatus (100) includes a rod (105) that is operative to flex when struck by a coal rope that is present inside the coal delivery pipe (200), a strain gauge (115) that is operative to produce an electrical signal based upon the amount of flexing that the rod (105) is subjected to when struck by a coal rope that is present in the coal delivery pipe (200), and a processor that is operative to determine based upon the electrical signal that is received thereby from the strain gauge (115) at least one of either the location of the coal rope within the coal delivery pipe (200) or the density of the coal rope within the coal delivery pipe (200).

Abstract: An apparatus (100) operative for purposes of detecting the presence of a coal rope within a coal delivery pipe (200) is provided. The apparatus (100) includes a rod (105) that is operative to flex when struck by a coal rope that is present inside the coal delivery pipe (200), a strain gauge (115) that is operative to produce an electrical signal based upon the amount of flexing that the rod (105) is subjected to when struck by a coal rope that is present in the coal delivery pipe (200), and a processor that is operative to determine based upon the electrical signal that is received thereby from the strain gauge (115) at least one of either the location of the coal rope within the coal delivery pipe (200) or the density of the coal rope within the coal delivery pipe (200).

Abstract: Provided are methods and systems for hands free communication with a wearable telecommunication device configured to recognize a command associated with the audio message and executing the command by communicating wirelessly with at least one communication device or a mobile telecommunication system. The wearable wireless telecommunications headset includes a casing containing a speaker for receiving an audio message, a microphone for sending an audio message, transceiver and a processor programmed for voice recognition. Methods are provided for direct communication with a telecommunication system and also communicating with a telecommunications system via an intermediary local device.

Abstract: A liquid level measuring system for the steam drum of a steam generator employs a plurality of bubblers spaced along the length of the drum to obtain a level profile. The steam pressure to the bubblers is supplied by tubes connected to the steam/water inlet space which has a pressure significantly higher than the steam space in the drum. Horizontal pressure taps on each bubbler transmit the pressure to pressure cells external to the drum where the bubbler pressure is compared to the pressure in the steam space. These reading can then be converted to liquid level readings.