An aircraft includes a first engine that generates first bleed air flow and a second engine that generates second bleed air flow. The aircraft further includes an aircraft environmental control system (ECS) with a bleed manifold to collect the first bleed air flow and the second bleed air flow, and one or more air cycle machines to perform air conditioning consuming bleed air flow from the bleed manifold. The ECS balances the first bleed air flow and the second bleed air flow output from the first engine and second engine, respectively, based on a bleed manifold pressure of the bleed manifold.

An apparatus to distribute pressurized fluid from one or more sources to multiple wellbores. The apparatus includes a manifold having at least two inlets and at least two outlets. Pressurized fluid is brought into the manifold from opposing directions so that the fluid from one inlet will impinge upon the fluid from the other inlet thereby deenergizing the fluid. Additionally, the manifold is configured such that the cross-sectional area of the inlets is less than the cross-sectional area of the manifold thereby decreasing velocity minimizing the kinetic energy available to erode or otherwise damage equipment, while providing a pressure decrease as the fluid enters the manifold. The outlets are configured such that the cross-sectional area of the outlets providing fluid to a single wellbore is greater than or equal to the cross-sectional area of the inlets such that no pressure increase occurs within the manifold or the outlets as the fluid exits the manifold. Additional velocity reduction enhancements may include angled or camp third turns between the inlet and the manifold or the manifold and an outlet.

In a flow controller comprising a base with a gas passage formed inside, a flow sensor which measures a flow rate of the gas flowing through the passage, and at least two flow control valves which control the flow rate of the gas flowing through the passage, the flow sensor is configured so as to detect a total flow rate of the gas flowing through the passage, a part in the middle of the passage is branched into at least two branch passages, and at least one of said flow control valves is interposed in each of these branch passages. Thereby, even when a pressure difference PI between a primary side pressure P1 and a secondary side pressure P2 cannot be increased, the maximum flow rate of the gas can be made larger than before.

A gas supply system capable of flow measurement includes a flow controller that controls the flow rate of a flowing gas, a first shutoff valve provided downstream of the flow controller, a second shutoff valve provided in a first flow passage communicating with the downstream side of the first shutoff valve, a second flow passage that branches from the first flow passage, a third shutoff valve provided in the second flow passage, a pressure sensing device that detects a pressure in a flow passage controlled by the first, second, and third shutoff valves, a temperature sensing device that detects a temperature in the flow passage controlled by the first, second, and third shutoff valves, a volume measuring tank connected downstream of the third shutoff valve and having a known volume, and an arithmetic and control unit that obtains a passage volume controlled by the first, second, and third shutoff valves by applying Boyle's law to open and closed states of the third shutoff valve and calculates the flow rate of the flow controller, using the passage volume and detection values obtained by the pressure sensing device and the temperature sensing device.

A water temperature control system and a water temperature control method are provided. The water temperature control system includes a thermostatic spool, a temperature sensor, a controller, and a stepper motor. The thermostatic spool is configured to mix water at a first temperature and water at a second temperature to produce output water. The temperature sensor is configured to sense a current water temperature of the output water based on a sensing frequency to provide a current water temperature signal. The controller is configured to provide a step number control signal according to a target water temperature signal and a current water temperature signal. Based on a step frequency greater than the sensing frequency, the stepper motor is configured to provide a step number according to a step number control signal to adjust a flow rate of the water at the first temperature and a flow rate of the water at the second temperature.

A sample catching system for cleaning a drilling fluid in a drilling operation includes a first line having a first entrance valve configured to allow the drilling fluid to flow into the first line, a first chemical sensor for measuring the amount of hydrogen sulfide of the drilling fluid in the first line, and a first sample catch valve configured to allow the drilling fluid to flow out of the first line. The system also includes a second line having a second entrance valve configured to allow the drilling fluid to flow into the second line, a sample catch pump, and a controller configured to determine the amount of hydrogen sulfide is above a predetermined threshold value, and open the second entrance valve to divert drilling fluid intake from the first line to the second line, and close the first entrance valve to stop the drilling fluid from entering the first line.

Fluid control systems, including mass flow control systems, mass flow ratio control systems, and mass flow and ratio control systems, as well as corresponding methods for fluid control are provided. These systems allow one shared pressure sensor to be used for multiple flow channels, and a controller which can accurately determine mass flow on the basis of fluid pressure detected by this shared pressure sensor.

A system and method for dispensing an injection material to an injection point. The injection material is stored in a tank and disposed to parallel piped vessels. An orifice is disposed in piping connected to discharge ends of the vessels, and has an opening with a designated cross sectional area. A high pressure fluid drives the injection material to the injection point; the pressure of the high pressure fluid is regulated with a pressure control valve. Valves in the inlet and discharge piping connected to the vessels are selectively opened and closed so that injection material flows to and from the vessels. Vessels vent to a recycle/recovery system to reduce vessel pressure enabling refilling with injection material. Valves in the pressurizing and depressurizing lines are selectively opened and closed to depressurize and refill the vessels to have continuous chemical injection to the injection location.

A fluid control system (1) comprises: a first valve (21) provided downstream of a flow rate controller (10), a flow rate measuring device (30) provided downstream of the first valve (21) and having a second valve (22), an open/close detector (26) provided to the second valve (22), and a controller (25) for controlling an open/close operation of the first valve (21) and the second valve (22), and the controller (25) controls the open/close operation of the first valve (21) in response to a signal output from the open/close detector (26).

The disclosure relates to a method and a device for providing zeotropic refrigerants in which the refrigerant is formed from a refrigerant blend of at least two components, the components being added to a container in the ratio of their respective mass fractions to the refrigerant, and the refrigerant blend being formed in the container, wherein the temperature and/or the pressure in the container is set by means of a control device such that the refrigerant is present exclusively in the gas phase or exclusively in the liquid phase.