United Technologies Corporation

Carrier Corporation

Utc Fire and Security Corporation

Satish Narayanan

Andrzej Banaszuk

Ramons Andris Reba

Robert Hans Schlinker

John C Simonich

Wesley K Lord

William A Veronesi

Brian Ernest Wake

Nicholas Charles Soldner

Gregory A Kohlenberg

Alexander I Khibnik

Marios C Soteriou

Thierry Pascal Maeder

Lawrence E Zeidner

Bernd R Noack

Robert N Tomastik

Sergey Shishkin

Mathias Diebold

Thierry Maeder

Robert E LaBarre

Nathan S Hariharan

Philippe Detriche

Zheng O'Neill

John Simonich

A model-based egress support system () employs models to generate an optimal egress route for occupants in a region. The system includes an egress controller () that is connected to receive detection data. The egress controller () executes an optimization algorithm () to select an egress route based on model-based egress estimates generated by an egress prediction model () in response to the detection data.

Model-based egress support system

A method for estimating a heating/cooling load of a zone within a building may include determining a measured parameter from the zone, generating a reduced order thermodynamic model of the zone, generating an Extended Kalman Filter based on the thermodynamic model of the zone, and processing the measured parameter using the Extended Kalman Filter to estimate at least one unknown state of the zone, such as an estimated load. A similar method may be used to estimate a temperature in a cold room of a refrigeration system.

Model based system and method for estimating parameters and states in temperature controlled spaces

A method of non-intrusive electrical load monitoring of an electrical distribution system includes monitoring a main power line of the electrical distribution system to determine a set of electrical characteristics of the electrical distribution system, receiving a set of state information for a plurality of individual loads of the electrical distribution system, and determining energy consumption characteristics for the plurality of individual loads based upon the set of electrical characteristics and the set of state information.

Non-intrusive electrical load monitoring

A nozzle for a gas turbine engine is provided with undulations on a core and/or fan exhaust flow nozzle. An annular wall defines a fluid flow passage and includes a base portion and an adjoining exit portion. The base portion is typically generally frustoconical in shape and includes an arcuate contour in an axial direction. The exit portion includes undulations in a generally radial direction that provide lobes and troughs each respectively including trailing edges. One of the lobe and trough trailing edges are recessed from the other of the lobe and trough trailing edges in a generally axial direction. The other of the lobe and trough trailing edges form apexes with the apexes provided on tabs. The troughs extend radially inward in the axial direction towards the trough trailing edges.

Serrated nozzle trailing edge for exhaust noise suppression

An exhaust nozzle for use in a gas turbine engine comprises a flow body for receiving exhaust gas from the turbine engine and includes a leading edge and a trailing edge. The leading edge connects with the gas turbine engine such that the flow body surrounds a centerline of the engine. The trailing edge comprises a serrated portion and a non-serrated portion. The serrated portion is formed from a plurality of tabs for mixing exhaust gas exiting the flow body with gases passing by an exterior of the flow body. The non-serrated portion is positioned along a lower portion of the trailing edge with respect to the engine centerline.

Asymmetric serrated nozzle for exhaust noise reduction

A system for reducing jet noise emission from an internally mixed gas turbine engine exhaust, comprising a fan/core flow mixer having a plurality of mixer lobes and a common flow nozzle having an equal number of tabs located along a circumferential edge of an aft end of the nozzle. There is a predetermined clocking relationship between the plurality of mixer lobes and the plurality of nozzle tabs that results in reduced exhaust noise emission, most evident in the lower frequency range. A method for reducing jet noise emission from an internally mixed gas turbine engine exhaust comprises selectively aligning a circumferential distribution of a mixed flow vorticity field produced by a fan/core mixer with a circumferentially distributed exhaust flow vorticity field produced by a modified common flow nozzle at an exit plane of the engine exhaust.

Jet exhaust noise reduction system and method

A diffuser ( ) has a step ( ) in the surface ( ) just upstream of a point where boundary layer separation might occur. An acoustic jet ( ) has a nozzle ( ) immediately downstream of the step ( ); the acoustic jet is driven ( ) by a plurality of frequencies, one or more of which are subharmonics of another of them, and having different phases.

Control of flow separation with harmonic forcing and induced separation

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Ellington, CT, United States of America

Satish Narayanan