A method and system for co-ordinating control of a plurality of sensorless devices. Each device includes a communication subsystem and configured to self-detect one or more device properties, the device properties resulting in output having one or more output properties. The method includes: detecting inputs including the one or more device properties of each device, correlating, for each device, the detected one or more device properties to the one or more output properties, and co-ordinating control of each of the devices to operate at least one of their respective device properties to co-ordinate one or more output properties for the combined output to achieve a setpoint. In some example embodiments, the setpoint can be fixed, calculated or externally determined.

A wastewater-lifting system and a method for operating a wastewater-lifting system guides wastewater loaded with bulky materials into a bulky material collection tank having at least one separating screen. During intake of wastewater, the bulky materials are retained in the bulky material collection tank and pre-cleaned wastewater passes into a liquid collection tank via a connection line and one or both of a pump and a bypass line connected to the connection line. During the wastewater intake a pivoting flap in the connection line closes flow to the pump except for a flushing cross section, and opens the bypass line. During a pumping operation, the pivoting flap opens the connection line from the pump and closes the bypass line.

A method for determining a set of optimal operating parameters for a pumping plant that pumps a fluid medium by a set of multiple pumps connected in parallel includes: determining, from the set of pumps, a set of possible scenarios, each scenario indicating, for each pump in the set, whether the pump is running or not running; optimizing, for each scenario, a set of operating parameters including operating parameters of the pumps that are running according to the respective scenario so that all running pumps together bring a given input mass flow of the medium from a given input pressure to a given output pressure while minimizing a total power consumption of all running pumps, and assigning the found minimum power consumption and the corresponding optimal operating parameters to the respective scenario; and determining, from the set of scenarios, the scenario with a lowest power consumption.

A water pumping control device may include a primary power source and a secondary power source. The primary power source may be configured to provide a primary power input to a processing unit, and the secondary power source may be configured to provide a secondary power input to the processing unit. A primary pump and a secondary pump may be in communication with the processing unit, and the primary pump and the secondary pump may each be variable in speed. The primary pump and the secondary pump may each be in fluid communication with a sump so that when a pump is activated, the pump may remove water from the sump. A water level sensor may be in communication with the processing unit, and the water level sensor may be configured to provide a water level input describing a water level in the sump to the processing unit.

System with two pumps (B1, B2) connected in parallel to a delivery manifold and respective electronic pressure switches (P1, P2) provided with a pressure sensor (S1, S2) connected to the delivery manifold and designed to alternate their operation between a first configuration with a first shut-down pressure (Pmax1) and a first start-up pressure (Pmin1) and a second configuration with a second shut-down pressure (Pmax2) and a second start-up pressure (Pmin2), the first shut-down pressure (Pmax1) being greater than the second shut-down pressure (Pmax2) and the first start-up pressure (Pmin1) greater than the second start-up pressure (Pmin2). Each of the pressure switches (P1, P2) is designed to alternate their operation between the two configurations according to a pressure reading (Pimp) at the delivery manifold by the pressure sensor(s) (S1, S2). The invention also relates to a pressure switch.

The present application provides a method of optimizing fan usage in a cooling water system having a number of fans with a heat exchanger to cool a cooling fluid for use with a number of gas turbine subsystems. The method may include the steps of running all of the fans at base load, calculating a heat transfer capability of each fan at base load, calculating a temperature difference between an actual temperature and a target temperature of the cooling fluid, selecting a minimum target temperature of the cooling fluid, calculating a target thermal energy of the cooling fluid for the minimum target temperature, calculating a number of the fans to be turned on or off by dividing the target thermal energy with the heat transfer capability of each fan, and turn on or off the calculated number of fans in a predetermined manner with an objective of balancing the running hours of each fan.

A control system for an operable system such as a flow control system or temperature control system. The system operates in a control loop to regularly update a model with respect at least one optimizable input variable based on the detected variables. The model provides prediction of use of the input variables in all possible operation points or paths of the system variables which achieve an output setpoint. In some example embodiments, the control loop is performed during initial setup and subsequent operation of the one or more operable elements in the operable system. The control system is self-learning in that at least some of the initial and subsequent parameters of the system are determined automatically during runtime.

A whole home water appliance system includes controller circuitry, a primary sump pump driven by an electric motor, and a secondary sump pump driven with a flow of water. The system also includes a water control actuator operable as a water main control device for a domestic water distribution network and a flow meter to measure the flow of municipal water supplied to the network. The controller circuitry selectively energizes the primary sump pump to extract liquid from a sump pit based on a liquid level in the sump pit. The secondary sump pump independently controlled by a hydraulic level sensor to extract liquid from the sump pit. The water control actuator controlled by the controller circuitry to shut off a municipal water supply to the domestic water distribution network in response to detection of a leak. Communication circuitry included in the whole home water appliance may wirelessly communicate.

At least one computer-readable medium on which are stored instructions that, when executed by at least one processing device, enable the processing device to perform a method. The method includes determining a peak-efficiency range of a set of one or more pumps. The peak-efficiency range has an upper limit and a lower limit. The upper limit has an associated stage-down pump speed and the lower limit has an associated stage-up pump speed. The pump speed of the set of one or more pumps is determined. If the pump speed of the set of one or more pumps exceeds the stage-down pump speed, an operating pump of the set of one or more pumps is deactivated. If the pump speed of the set of one or more pumps falls below the stage-up pump speed, an operating pump is added to the set of one or more pumps.

A mobile pump system includes: a trailer movable by a vehicle; a first pump and a second pump mounted to the trailer and in fluid communication with an outlet configured to flow a fluid to a destination and with a fluid source; a power source mounted to the trailer and directly coupled to the first pump and/or the second pump, where the power source includes a turbine and/or a natural gas fired reciprocating engine; and a control system configured to: activate the second pump, with the first pump deactivated, with a flow rate of the mobile pump system below a first set point; in response to the flow rate of the mobile pump system reaching the first set point, activate the first pump; and deactivate the second pump, with the first pump activated, in response to the flow rate of the mobile pump system reaching a second set point, where the second set point is greater than or equal to the first set point.