Carrier Corporation

Other

Richard G Lord

Kenneth J Nieva

Parmesh Verma

Alexander Lifson

Michael F Taras

Larry D Burns

Thomas D Radcliff

Frederick James Cogswell

Paul Papas

Ahmad M Mahmoud

Biswajit Mitra

Dennis R Penge

Frank Silva

Michael J Birnkrant

Marcin Piech

Lei Chen

Ziyou Xiong

Jack Leon Esformes

Michel Karol Grabon

Jinliang Wang

Rajiv Ranjan

Eugene Duane Daddis

Rudy C Bussjager

Hans-Joachim Huff

Dong Luo

Charbel Rahhal

Eugene D Daddis, Jr

Jeffrey James Nieter

David W Gerlach

John W Schedel

Sherif Kandil

David F Geary

Guy A DeLuca

Michael J Froehlich

Mark R Rabbia

Ludgina Fils Dieujuste

Kevin J Glover

Arthur F Friday

David L Waugh

William F Walter

Sarath Chandra Srikakulapu

Anup Kumar

Hari Keerthana Akumalla

An optical monitoring device includes a housing including a plurality of walls and an interior space disposed therebetween, an opening disposed in a wall of the plurality of walls, and a movable panel, the opening forms a window through the wall, and the movable panel is configured to be moved to access the interior space; a lamp assembly disposed within the interior space and positioned to project light at the window; a camera including an image receiving lens, the camera positioned within the interior space with the image receiving lens is in optical communication with the window; a memory storage device for storing image data; and a controller in electrical communication with the camera and the memory storage device, wherein the controller is configured to compare instant image data from the camera to image data stored on the memory storage device.

Optical monitoring device for use in heating, ventilation, air conditioning and refrigeration system for moisture level

A hydronic economizer module is configured for use in a chiller system that has a vapor compression cycle. The hydronic economizer module includes a heat exchanger assembly located within a housing having at least one heat exchanger coil, a fan assembly having at least one fan generally aligned with at least one heat exchanger coil, and at least one valve is movable between a plurality of positions to control a flow of fluid into the heat exchanger assembly. When the at least one valve is in a first position, the economizer module is arranged in parallel with a flat plate heat exchanger. When the at least one valve is in a second position, the economizer module is arranged in series with the flat plate heat exchanger. The flat plate heat exchanger includes at least one fluid port for communicating with a component of the vapor compression cycle.

Modular waterside economizer integrated with air-cooled chillers

A refrigeration system includes a compressor connected to a first heat exchanger and a second heat exchanger. An expansion device is connected between the first heat exchanger and the second heat exchanger. A ratio of a volume of the first heat exchanger to a volume of the second heat exchanger is between 0.6 and 1.8.

Vapor compression system

Disclosed is a heat exchanger assembly including: a coil; one baffle connected to a first end of the coil, the one baffle being configured to capture a liquid refrigerant that has leaked from the coil, the one baffle being configured to direct the liquid refrigerant toward a first end of a drain pan.

System and method for mitigating risk from a leaked refrigerant at evaporator coils

An HVAC/R system having: an HVAC/R component that has a heat exchanger, the HVAC/R component configured to allow a refrigerant to flow therethrough; a housing with the heat exchanger disposed there therein, and a supply side air conduit connected to the housing, the supply side air conduit being operably coupled to the HVAC/R component; a supply side leak mitigation damper operably coupled to the supply side air conduit; and wherein the supply side leak mitigation conduit is configured to selectively block airflow through the supply side air conduit.

Evaporator with one or more leak mitigation dampers

An air conditioning system is provided and includes a unit receptive of refrigerant having a moderate-to-low global warming potential (GWP) value for thermal interaction with a fluid, an enclosure, a fan disposed and configured for urging a flow of the fluid through the unit, a refrigerant detection sensor and a controller. The refrigerant detection sensor is disposed in the enclosure to be operable in a first mode in which a baseline response is established and a second mode in which refrigerant leak detection is executed based on the baseline response. The refrigerant detection sensor is further configured to generate a binary output of leak and non-leak signals in accordance with a result of the refrigerant leak detection. The controller is configured to control operations of the fan and the vent based on the binary output.

Moderate-to-low global warming potential value refrigerant leak detection

A hydronic economizer module configured for use in a chiller system having a vapor compression cycle including a housing having at least a first air inlet. A heat exchanger assembly located within said housing. The heat exchanger includes at least one heat exchanger coil. A fan assembly includes at least one fan generally aligned with the at least one heat exchanger coil. At least one valve is movable between a plurality of positions to control a flow of fluid into said heat exchanger assembly. When said at least one valve is in a first position the economizer module is arranged in parallel with a component of the vapor compression cycle. When said at least one valve is in a second position the economizer module is arranged in series with said component of the vapor compression cycle.

Modular waterside economizer for air-cooled chillers

A mitigation damper operably coupled to a return conduit. The return conduit includes an opening. The mitigation damper is positioned adjacent to the opening. The mitigation damper is configured to selectively allow airflow through the opening in response to a detected refrigerant leak.

System and method of diluting a leaked refrigerant in an HVAC/R system

A heating system includes a refrigerant boiler including a heat source for heating a refrigerant from a liquid state to a vapor state, a boiler outlet and a boiler inlet; a heat exchanger in fluid communication with the refrigerant boiler, the heat exchanger including a upper manifold having a heat exchanger inlet coupled to the boiler outlet, a lower manifold having a heat exchanger outlet coupled to the boiler inlet and a plurality of tubes connecting the upper manifold and the lower manifold, wherein refrigerant passes from the upper manifold to the lower manifold via gravity; and a fan moving air over the heat exchanger to define supply air for a space to be heated.

Heating system including a refrigerant boiler

An HVAC&R system including a pumping device configured to circulate a first two-phase medium, a plurality of secondary HVAC&R units, wherein at least one of the plurality of secondary HVAC&R units is operably coupled to the pumping device, and a primary HVAC&R unit operably coupled to at least one of the plurality of secondary HVAC&R units, wherein the pumping device, a portion of the plurality of secondary HVAC&R units, and a portion of the primary HVAC&R unit form a primary loop.

Two phase loop distributed HVACandR system

An HVAC/R system including an HVAC component configured to allow a flammable refrigerant to flow therethrough, at least one supply flame arrestor positioned within the supply air steam, and at least one return flame arrestor positioned within the return air stream, wherein each flame arrestor includes an open area greater than 60%.

Flame arrestors for use with a HVAC/R system

A heat pump system includes a refrigerant circuit, at least one variable speed compressor operating with a maximum pressure ratio of at least 5.0 and a variable speed range of at least three times (3&#xd7;), a heat absorption heat exchanger, a heat rejection heat exchanger, an ejector disposed on the refrigerant circuit upstream of the compressor to extend a pressure ratio range and a volumetric flow range of the compressor in the cold climates, a separator disposed downstream of the ejector and upstream of the heat absorption heat exchanger, and at least one variable speed fan configured to move air through the heat rejection heat exchanger to provide a predefined an air discharge temperature greater than 90&#xb0; F. A two-phase refrigerant is provided to an inlet of the heat absorption heat exchanger with a quality of less than or equal to 0.05.

Wide speed range high-efficiency cold climate heat pump

An air supply system and a method for controlling operation of an air supply system for supplying a conditioned air flow at a setpoint air temperature to a climate controlled space.

Control of a conditioned air supply system

A superheat control utilizes a sensor at a location downstream of an evaporator after some heat is delivered to the refrigerant. In one embodiment, the compressor is a sealed compressor with at least a portion of the refrigerant being heated by an electric motor. The temperature is sensed after the refrigerant temperature has increased after passing over the electric motor. In another embodiment, the refrigerant temperature is measured after some minimal compression and minimal temperature rise has occurred within the compressor pumping elements. In either case, by measuring the temperature of the refrigerant after some additional heat has been added to the refrigerant, the refrigerant super-heat leaving the evaporator can be controlled to a lower value. The improved superheat control enhances the system performance by increasing system efficiency, system capacity and improving oil return to the compressor.

Superheat control for HVACandR systems

A rooftop air conditioning unit to provide conditioned air to a conditioned space within a building is provided and includes a housing, disposed on a roof of the building roof, defining a pathway from an inlet fed by exterior and/or interior air to an outlet leading to the conditioned space and a hydronic heating system disposed within the housing to heat the air traveling along the pathway.

Rooftop hydronic heating unit

Growing community of inventors

Murfreesboro, TN, United States of America

Richard G Lord