Abstract: The present invention provides a heating, ventilation, and air-conditioning (HVAC) system using an A2L refrigerant and a method of installing the HVAC system in a building. The HVAC system includes an indoor unit having a heat exchanger that uses an A2L refrigerant, a blower, an outdoor unit, an A2L control board, and one or more A2L sensors configured to detect an amount of A2L refrigerant. In one or more embodiments, the indoor unit is electrically coupled to the blower, the A2L control board, and the outdoor unit. Also, in one or more embodiments, the A2L control board is also electrically coupled to the blower and the one or more A2L sensors.

Abstract: The present invention provides a system for detecting an amount of A2L refrigerant in an air temperature controller using an A2L refrigerant, and a method of installing a configuration of A2L sensors in the air temperature controller using an A2L refrigerant. The system includes an A2L control board, a first A2L sensor, and a second A2L sensor. The first A2L sensor and the second A2L sensor are coupled in series and electrically coupled to the A2L control board. Each of the first A2L sensor and the second A2L sensor include sensing components configured to detect the amount of A2L refrigerant.

Abstract: The present invention provides a system for detecting an amount of R-32 refrigerant in an air temperature controller using an R-32 refrigerant, and a method of installing a configuration of R-32 sensors in the air temperature controller using an R-32 refrigerant. The system includes an R-32 control board, a first R-32 sensor, and a second R-32 sensor. The first R-32 sensor and the second R-32 sensor are coupled in series and electrically coupled to the R-32 control board. Each of the first R-32 sensor and the second R-32 sensor include sensing components configured to detect the amount of R-32 refrigerant.

Abstract: The present invention provides a system for detecting an amount of A2L refrigerant in an air temperature controller using an A2L refrigerant, and a method of installing a configuration of A2L sensors in the air temperature controller using an A2L refrigerant. The system includes an A2L control board, a first A2L sensor, and a second A2L sensor. The first A2L sensor and the second A2L sensor are coupled in series and electrically coupled to the A2L control board. Each of the first A2L sensor and the second A2L sensor include sensing components configured to detect the amount of A2L refrigerant.

Abstract: The present invention provides a system for detecting an amount of R-32 refrigerant in an air temperature controller using an R-32 refrigerant, and a method of installing a configuration of R-32 sensors in the air temperature controller using an R-32 refrigerant. The system includes an R-32 control board, a first R-32 sensor, and a second R-32 sensor. The first R-32 sensor and the second R-32 sensor are coupled in series and electrically coupled to the R-32 control board. Each of the first R-32 sensor and the second R-32 sensor include sensing components configured to detect the amount of R-32 refrigerant.

Abstract: The present invention provides a heating, ventilation, and air-conditioning (HVAC) system using an A2L refrigerant and a method of installing the HVAC system in a building. The HVAC system includes an indoor unit having a heat exchanger that uses an A2L refrigerant, a blower, an outdoor unit, an A2L control board, and one or more A2L sensors configured to detect an amount of A2L refrigerant. In one or more embodiments, the indoor unit is electrically coupled to the blower, the A2L control board, and the outdoor unit. Also, in one or more embodiments, the A2L control board is also electrically coupled to the blower and the one or more A2L sensors.

Abstract: The present invention provides a system for detecting an amount of R-32 refrigerant in an air temperature controller using an R-32 refrigerant, and a method of installing a configuration of R-32 sensors in the air temperature controller using an R-32 refrigerant. The system includes an R-32 control board, a first R-32 sensor, and a second R-32 sensor. The first R-32 sensor and the second R-32 sensor are coupled in series and electrically coupled to the R-32 control board. Each of the first R-32 sensor and the second R-32 sensor include sensing components configured to detect the amount of R-32 refrigerant.

Abstract: The present invention provides a system for detecting an amount of R-454b refrigerant in an air temperature controller using an R-454b refrigerant, and a method of installing a configuration of R-454b sensors in the air temperature controller using an R-454b refrigerant. The system includes an R-454b control board, a first R-454b sensor, and a second R-454b sensor. The first R-454b sensor and the second R-454b sensor are coupled in series and electrically coupled to the R-454b control board. Each of the first R-454b sensor and the second R-454b sensor include sensing components configured to detect the amount of R-454b refrigerant.

Abstract: The present invention provides a system for detecting an amount of A2L refrigerant in an air temperature controller using an A2L refrigerant, and a method of installing a configuration of A2L sensors in the air temperature controller using an A2L refrigerant. The system includes an A2L control board, a first A2L sensor, and a second A2L sensor. The first A2L sensor and the second A2L sensor are coupled in series and electrically coupled to the A2L control board. Each of the first A2L sensor and the second A2L sensor include sensing components configured to detect the amount of A2L refrigerant.

Abstract: A method and system are disclosed that provide chemical composition data of a fluid. The system includes a first downhole electro-opto-mechanical device to transmit microwave radiation through the fluid. The microwave radiation is generated by the first downhole electro-opto-mechanical device in response to a first light signal. A second downhole electro-opto-mechanical device receives the microwave radiation and generates a second light signal in response to the received microwave radiation. A light detection device is coupled to the second downhole electro-opto-mechanical device to generate an electrical signal in response to the second light signal. The electrical signal is indicative of the chemical composition of the fluid.

Abstract: The disclosed embodiments include an acoustic noise reduction device. In one embodiment, the device includes a first sensor operable to detect a first acoustic noise signal and a desired signal and to modulate a first plurality of optical signals in response to detecting at least one of the first acoustic noise signal and the desired signal. The device also includes a second sensor operable to detect a second acoustic noise signal and modulate a second plurality of optical signals in response to detecting the second acoustic noise signal. The device further includes a coupler that is connected to the first and second sensors, where components of the modulated first and second plurality of optical signals approximately cancel each other out.

Abstract: A method and system can include positioning an optical waveguide along a wellbore, and launching one or more optical signals into the waveguide at one or more optical signal frequencies and during one or more time periods, thereby resulting in one or more backscattered signals being received by the receiver, which produces a trace for each of the one of more backscattered signals. Changing an environmental condition in the wellbore, generating additional backscattered light signals at one or more frequencies after the change. Comparing the traces generated before the condition change to those generated after the change, identifying a before trace and an after trace that are substantially equal to each other and identifying a frequency difference between these traces. The frequency difference can be used to determine the amount of change in the environmental condition that occurred when the environmental change event happened.

Abstract: In one embodiment, the apparatus includes a production tubing for carrying fluids from a producing zone to a surface, and a three-way valve coupled to the production tubing, the three-way valve including an inlet from the production tubing, an outlet to the production tubing, and an inlet from the borehole surrounding the three-way valve. The apparatus further includes a resonant tube densitometer disposed in the outlet to the production tubing, the resonant tube densitometer configured to measure the density of the fluids. A flow meter is disposed in the outlet to the production tubing, the flow meter configured to measure volumetric flow of the fluids.

Abstract: An apparatus, system, and method are disclosed herein. In one embodiment, the apparatus includes a plurality of valves. Each valve of the plurality of valves is associated with a respective production zone of a well. Each valve includes a valve body having a passage and an inflow fluid input through which a formation fluid from the respective production zone associated with the valve is to enter the passage of the valve body. Each valve further includes a sensor located within the valve body to detect a density of the formation fluid. The apparatus further includes a processor programmed to determine a fraction of a subject fluid in the formation fluid based on the density of the formation fluid and a density of the subject fluid.

Abstract: A method and system can include positioning an optical waveguide along a wellbore, and launching one or more optical signals into the waveguide at one or more optical signal frequencies and during one or more time periods, thereby resulting in one or more backscattered signals being received by the receiver, which produces a trace for each of the one of more backscattered signals. Changing an environmental condition in the wellbore, generating additional backscattered light signals at one or more frequencies after the change. Comparing the traces generated before the condition change to those generated after the change, identifying a before trace and an after trace that are substantially equal to each other and identifying a frequency difference between these traces. The frequency difference can be used to determine the amount of change in the environmental condition that occurred when the environmental change event happened.

Abstract: A method and system can include positioning an optical waveguide along a wellbore, and launching one or more optical signals into the waveguide at one or more optical signal frequencies and during one or more time periods, thereby resulting in one or more backscattered signals being received by the receiver, which produces a trace for each of the one of more backscattered signals. Changing an environmental condition in the wellbore, generating additional backscattered light signals at one or more frequencies after the change. Comparing the traces generated before the condition change to those generated after the change, identifying a before trace and an after trace that are substantially equal to each other and identifying a frequency difference between these traces. The frequency difference can be used to determine the amount of change in the environmental condition that occurred when the environmental change event happened.

Abstract: A method and system are disclosed that provide chemical composition data of a fluid. The system includes a first downhole electro-opto-mechanical device to transmit microwave radiation through the fluid. The microwave radiation is generated by the first downhole electro-opto-mechanical device in response to a first light signal. A second downhole electro-opto-mechanical device receives the microwave radiation and generates a second light signal in response to the received microwave radiation. A light detection device is coupled to the second downhole electro-opto-mechanical device to generate an electrical signal in response to the second light signal. The electrical signal is indicative of the chemical composition of the fluid.

Abstract: The disclosed embodiments include an acoustic noise reduction device. In one embodiment, the device includes a first sensor operable to detect a first acoustic noise signal and a desired signal and to modulate a first plurality of optical signals in response to detecting at least one of the first acoustic noise signal and the desired signal. The device also includes a second sensor operable to detect a second acoustic noise signal and modulate a second plurality of optical signals in response to detecting the second acoustic noise signal. The device further includes a coupler that is connected to the first and second sensors, where components of the modulated first and second plurality of optical signals approximately cancel each other out.

Abstract: A property of a downhole fluid, for example, a chemical species or ion concentration, may be accurately determined and logged based on measurements received from an optical detector where the optical detector is fed information or signals from an optical system coupled to one or more electrochemical probes calibrated for one or more properties of a fluid. The one or more electrochemical probes provide a potential to the optical system based, at least in part, on exposure to the downhole fluid. The optical system receives an optical signal from a light source that is transmitted via a transmission line, such as a fiber optic cable. Downhole information from the optical system is transmitted to the surface via the same or another transmission line. Thus, the signals are in the optical domain rather than the electrical domain. Multiple properties may be measured simultaneously using the same transmission line.

Abstract: A system and method for making measurements inside a wellbore makes use of a diamond crystal with a nitrogen vacancy center (NV-center) to sense temperature, pressure, magnetic fields, strain, electric fields, or other parameters of the downhole environment. The system includes a microwave source that can be positioned to produce microwaves inside the wellbore and a light source that can be positioned to produce interrogation light inside the wellbore. The NV-center of the diamond is struck by the interrogation light. A spectrometer can be adapted to receive the excitation light output from the NV-center and produce a spectrum of the excitation light. The spectrum is indicative of the value of the parameter inside the wellbore.