The present application relates to the technical field of water quality monitoring for water supply systems, and provides a water quality monitoring method for a water supply system, a water supply system, and a refrigeration apparatus. The water quality monitoring method for a water supply system includes: controlling to convey water to a water outlet pipe of the water supply system; obtaining a water quality parameter in the water outlet pipe; judging whether the water quality parameter meets a standard; if the water quality parameter meets the standard, ending the monitoring; if the water quality parameter does not meet the standard, proceeding to a next operation; controlling to drain the water in the water supply system; and repeating the above obtaining operation, judging operation, and draining operation, until the water quality parameter meets the standard. Through this method, the water quality parameter in the water outlet pipe may be monitored in real time, and it is controlled to drain the water in the water supply system when the water quality parameter exceeds the standard, thereby avoiding the breeding and deposition of organic matter. Moreover, this method may avoid drainage and flushing of the water supply system after a long period of inactivity, reduce operational difficulties and improve user convenience.

A self-correcting pressure-based mass flow control apparatus includes outlet pressure sensing to enable correction for non-ideal operating conditions. Further the mass flow control apparatus having a fluid pathway, a shutoff valve in the fluid pathway, a reference volume in the fluid pathway, a first pressure measuring sensor in fluid communication with the reference volume, a first temperature measuring sensor providing a temperature signal indicative of the fluid temperature within the reference volume, a proportional valve in the fluid pathway, and a second pressure measuring sensor in fluid communication with the fluid pathway.

A processor may receive an input dataset. The input dataset may include a plurality of waterpipe components and one or more performance factors of the waterpipe system. A processor may generate a digital twin of the waterpipe system using the input dataset. A processor may simulate, using the digital twin, one or more features of the waterpipe system. The simulating may include a forecast having one or more predicted conditions associated with the waterpipe system.

The present invention is a fluid distribution system comprising connected conduits (e.g., lines) wherein fluid flows, such as pipes within a building. The lines may be configured to: (i) include multiple lines that connect at intersections (some of the intersections will be identified as nodes); and (ii) incorporate node units associated with line pressure loss simulation assemblies (“LLSAs”). Activities of a node unit incorporating a LLSA can result in alterations in fluid pressure, such as by a loop control process to reposition balancing valves or other valves of one or more LLSAs, and/or by alteration of the speed of the system pump. These activities adjust fluid pressure to cause the system to produce a balanced and high efficiency energy transfer (e.g., heating or cooling), and do not involve or require any identification or use of any specific, fixed or absolute pressure value. They function based on an operation locus (for a node unit) and/or an operation locus range (for node unit groupings) to adjust the fluid pressure.

An integrated switch device includes an air valve assembly and a switch assembly. The air valve assembly comprises a flow channel base, a first air valve, and a second air valve. The flow channel base has a first air supply path and a second air supply path. The first air valve is provided on the first air supply path, and the second air valve is provided on the second air supply path. In addition, the switch assembly comprises an electrical control module controlled to output an on-off signal to an air pump, and an operation cover fitted and connected to the electrical control module.

A distributed pump system is disclosed. The distributed pump system comprises a supply source and a support structure arranged on or proximate an agricultural vehicle. At least two fluid distribution elements are mounted to the support structure and are coupled at an inlet to a first conduit to provide fluid communication between the fluid distribution elements and the supply source. An application system including at least two application units is coupled to one or more of the fluid distribution elements by a second conduit. A first monitoring device is associated with a respective application unit and fluid distribution element, and is configured to sense a downstream flow parameter of the second conduit and generate a corresponding output signal. An electronic control unit is communicatively coupled to each of the fluid distribution elements and is configured to dynamically adjust an input parameter of one or more of the fluid distribution elements.

A vehicle wash component at a vehicle wash location includes a processor for controlling an operational status of the vehicle wash component, an actuator communicatively coupled to the processor and configured to operate the vehicle wash component, and a power source electrically coupled to the processor and the actuator. The processor receives a signal from a car wash controller located at the vehicle wash location, the signal for commanding control of the vehicle wash component, and upon receipt of the signal, the processor interprets the signal, generates a separate signal, and transmits the generated signal to the actuator. The actuator receives the signal from the processor for controlling the operational status of the vehicle wash component based thereon. The power source provides power to the actuator for operating the vehicle wash component based on the operational status of the vehicle wash component.

An oil-gas-water three-phase automatic metering device and method includes a liquid inlet pipe, a pump body, a degassing assembly, a water inlet assembly, first and second liquid storage pipes, a weighing assembly, and a control unit. The liquid inlet pipe, degassing assembly, one end of the first liquid storage pipe and one end of the second liquid storage pipe are connected to four valve ports of a first changeover valve, respectively. The water inlet assembly, one end of the pump body, the other end of the first liquid storage pipe, and the other end of the second liquid storage pipe are connected to four valve ports of a second changeover valve, respectively. The degassing assembly, the water inlet assembly and the other end of the pump body are in communication with the weighing assembly, and the pump body, degassing assembly and weighing assembly are communicatively connected to the control unit.

This disclosure relates to a water-cooled and flow-controlled heat dissipation system used in a cabinet and a control method thereof. The heat dissipation system includes a water supply apparatus, multiple water blocks, a pipe assembly, multiple throttles, and a control unit. The pipe assembly has a distribution pipe, a converging pipe, multiple inlet pipes, and multiple outlet pipes. One end of the distribution pipe and one end of the converging pipe are communicated with the water supply apparatus. Each inlet pipe has two ends communicated with the distribution pipe and to each water block respectively. Each outlet pipe has two ends communicated with the converging pipe and to each water blocks. Each throttle is installed in each inlet pipe, each outlet pipe, or each water block. The control unit is electrically connected to the throttles and controls the opening degree of each throttle.

A chemical injection system connects a main water flow to a source of chemicals to a bypass chemical dispenser in a water treatment system. The chemical injection system includes a supply pipe, a return pipe having a bypass chemical dispenser located along a length thereof, and a controlled pumping system including a compounding-rate pump controller connected to a pumping loop.