Abstract: A microphone receiver system is used for recording an acoustical event in an event space. Wireless microphone captures the acoustical event and transmits the acoustical event as a first signal transmission. The microphone receiver receives the first signal transmission and sends the first signal transmission as a received signal from a first output port of the microphone receiver to an input port of the recording device as the received signal as a representation of the acoustical event. A mounting assembly for connecting the microphone receiver to the recording device, the mounting assembly including a pair of opposing upright portions extending from opposing sides of the microphone receiver, the recording device being held between the opposing upright portions.

Abstract: A microphone receiver system is used for recording an acoustical event in an event space. Wireless microphone captures the acoustical event and transmits the acoustical event as a first signal transmission. The microphone receiver receives the first signal transmission and sends the first signal transmission as a received signal from a first output port of the microphone receiver to an input port of the recording device as the received signal as a representation of the acoustical event. A mounting assembly for connecting the microphone receiver to the recording device, the mounting assembly including a pair of opposing upright portions extending from opposing sides of the microphone receiver, the recording device being held between the opposing upright portions.

Abstract: A method for the on-line cleaning of a heat exchanger used with petroleum process fluids which create coke deposits of asphaltenic origin on the exchanger tubes. The asphaltenes are removed by re-dissolution in a solvent oil of high solubility power for the asphaltenes. Certain asphaltenic crudes are useful as solvents in view of their chemical similarity to the asphaltene coke precursors; also useful are refined petroleum fractions such as gas oils which are also characterized by their solvency for asphaltenes. The solvent oil may be admitted to the heat exchanger following withdrawal of the process fluid and then allowed to soak and dissolve the asphaltene coke precursors after which the resulting solution may be withdrawn and the exchanger returned to use without being at any time disconnected from its associated process unit.

Abstract: A high solvent power (HSP) crude oil is added to a blend of incompatible oils to proactively address the potential for fouling heat exchange equipment. The HSP component dissolves asphaltene precipitates before coking affects heat exchange surfaces. An HSP oil is also flushed through heat exchange equipment to remove any deposits and/or precipitates on a regular maintenance schedule before coking can affect heat exchange surfaces.