The present invention provides amultifunctional submersible pump, which provides multiple functional selections suitable for various types of aquariums, including water circulation and filtering, pumping out wastewater, oxygenation, and carbon dioxide refining. The bottom portion of the submersible pump is provided with a water inlet, a water outlet, a wastewater drain outlet, and an adjustment knob. Left and right rotation of the adjustment knobenables water circulation and filtering or pumping out wastewater, as well as enabling adjusting the amount of water flow. One side of the top portion of the submersible pump is fitted with a retainer ring, which enables disposing an aquarium lamp therein. Another function of the present invention lies in the design of the simple assembly method of the CO.sub.2 refiner, whereby the refiner can be easily disassembled for cleaning when a ceramic refining disk placed inside the refiner is obstructed by pollutants.

The present invention provides amultifunctional submersible pump, which provides multiple functional selections suitable for various types of aquariums, including water circulation and filtering, pumping out wastewater, oxygenation, and carbon dioxide refining. The bottom portion of the submersible pump is provided with a water inlet, a water outlet, a wastewater drain outlet, and an adjustment knob. Left and right rotation of the adjustment knobenables water circulation and filtering or pumping out wastewater, as well as enabling adjusting the amount of water flow. One side of the top portion of the submersible pump is fitted with a retainer ring, which enables disposing an aquarium lamp therein. Another function of the present invention lies in the design of the simple assembly method of the CO.sub.2 refiner, whereby the refiner can be easily disassembled for cleaning when a ceramic refining disk placed inside the refiner is obstructed by pollutants.

There is disclosed a system for cooling a water-cooled apparatus having a water inlet and a water outlet. The system has: a circuit in fluid communication with the water inlet and the water outlet, the circuit having a valve upstream of the water inlet connected to a source of water, and an outlet in fluid communication with a sewer; an air-cooled cooling unit in heat exchange relationship with water in the circuit; and a pump fluidly connected to the circuit; the system operable between a closed-loop configuration and an open configuration, the valve being closed and the pump circulating water between the water-cooled apparatus and the air-cooled cooling unit in the closed-loop configuration, and the valve being open and water in the circuit circulating from the source of water, through the water-cooled apparatus, and to the sewer in the open configuration.

Disclosed herein is a device for improving water quality, said device comprising: an inlet for inflow of liquid into the device; a hydraulic circuit for receiving liquid from the inlet, the hydraulic circuit comprising at least a first tank and a second tank, wherein the first tank is upstream of the second tank and wherein one of said first and second tanks is nested within the other of said first and second tanks; an outlet at a downstream end of the hydraulic circuit for discharge of liquid from the device; one or more contaminant separation elements in the hydraulic circuit for separation of contaminants from liquid passing therethrough using at least one of: gravitational separation; sized-based filtration; chemical separation; magnetic separation; electrolytic separation; and adsorption or attraction-based separation, wherein the first tank is a settlement tank for gravitational settlement of contaminants from the liquid.

A chemical dispensing system broadly including a mounting ring, a connector ring, a water guide, and a dispenser apparatus. The mounting ring securely attaches to a water return jet in a swimming pool or spa. The connector ring couples the water guide to the mounting ring. The dispenser apparatus may be attached to a side opening of the water guide and broadly includes a housing, and a porous cover. The housing broadly includes an interior chamber and chemical exit openings. Sanitizing chemicals may be placed in the interior chamber. The dispenser apparatus may further include an adjustable basket. The housing may rotatably nest inside the adjustable basket, thereby regulating the sanitizing chemical dispersal rate. Pressurized water from the return jet flows through the water guide, creating a downward current within the dispenser apparatus. The sanitizing chemicals dissolve as the water flows downward through and exits the dispensing apparatus.

A well management system provides Internet-enabled monitoring, configuration, and control of a well system that may include a pump and a pressure tank. A controller is operatively coupled to the pump. The controller controls the pump based on pressure readings from a pressure sensor to maintain a configured pressure range within the system. The controller can communicate with a management system via a communications network. The management system is further in communication with one or more client devices, which may be associated with a homeowner, a service provider, a manufacturer, or the like. Via the management system, the client devices can receive information from the controller and send commands to the controller.

There are described methods and systems for supplying water to an aircraft. A water supply assembly is fluidly coupled to a water storage tank via a supply line. An overflow line is fluidly coupled to the water supply assembly. One or more sensors are configured to determine an amount of water in the water storage tank. One or more processors are communicative with the one or more sensors and configured to: determine a desired amount of water to be contained in the water storage tank; determine from the one or more sensors that an amount of water in the water storage tank corresponds to the desired amount of water; and, in response to determining that the amount of water in the water storage tank corresponds to the desired amount of water, transmit an instruction for causing water being supplied from the water supply assembly to the water storage tank to be diverted to the overflow line.

There are described methods and systems for supplying water to an aircraft. A water supply assembly is fluidly coupled to a water storage tank via a supply line. An overflow line is fluidly coupled to the water supply assembly. One or more sensors are configured to determine an amount of water in the water storage tank. One or more processors are communicative with the one or more sensors and configured to: determine a desired amount of water to be contained in the water storage tank; determine from the one or more sensors that an amount of water in the water storage tank corresponds to the desired amount of water; and, in response to determining that the amount of water in the water storage tank corresponds to the desired amount of water, transmit an instruction for causing water being supplied from the water supply assembly to the water storage tank to be diverted to the overflow line.

A chemical dispensing system broadly including a mounting ring and a dispenser apparatus. The mounting ring securely attaches the dispenser apparatus to a water return jet in a swimming pool or spa. The dispenser apparatus broadly includes a connector ring, a screen, a housing, and an adjustable basket. The connector ring fastens the dispenser apparatus to the mounting ring. The screen is removably attached to the housing. The adjustable basket nests inside the housing and includes a tab that protrudes through the housing sidewall. The tab is used to rotate the adjustable basket within the housing, thereby regulating the sanitizing chemical dispersal rate. Pressurized water from the return jet flows across the surface of the screen, creating an upward-rising current within the dispenser apparatus. The sanitizing chemicals in the adjustable basket dissolve as the water flows upward through and exits through the screen of the dispensing apparatus.

A container for a waste heat utilization circuit may include a housing that defines a housing interior such that the housing interior can be flowed through by a working medium. A sheath may be arranged in the housing interior for accommodating an auxiliary medium. The sheath may be fluid-tight and heat-conductive at least in certain areas. The sheath may define a sheath interior of variable volume.