Abstract: There is described an apparatus for disinfecting a fluid, such as water. The apparatus includes a housing having a fluid inlet for inflow of a fluid to be disinfected, and a fluid outlet for outflow of the fluid to be disinfected. The apparatus further includes one or more light-emitting diodes (LEDs) operable to emit ultraviolet (UV) light for disinfecting the fluid to be disinfected. A fluid flow path extends from the fluid inlet to the fluid outlet. The fluid flow path is configured such that, when the fluid to be disinfected flows along the fluid flow path, the fluid to be disinfected flows sufficiently close to the one or more LEDs so as to absorb heat generated by the one or more LEDs.

Abstract: 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.

Abstract: There is described an apparatus for disinfecting a fluid, such as water. The apparatus includes a housing having a fluid inlet for inflow of a fluid to be disinfected, and a fluid outlet for outflow of the fluid to be disinfected. The apparatus further includes one or more light-emitting diodes (LEDs) operable to emit ultraviolet (UV) light for disinfecting the fluid to be disinfected. A fluid flow path extends from the fluid inlet to the fluid outlet. The fluid flow path is configured such that, when the fluid to be disinfected flows along the fluid flow path, the fluid to be disinfected flows sufficiently close to the one or more LEDs so as to absorb heat generated by the one or more LEDs.

Abstract: A water distribution system having a dual use water treatment unit. The same water treatment unit can be used to treat water supplied from a fill port to a storage tank during a fill operation, as well as water leaving the storage tank for supply to one or more points of water use during a supply operation. When a diverter valve is in a fill position, water supplied to the fill port can flow through the diverter valve and to the water treatment unit for treatment then to the storage tank for storage. When the diverter valve is in a supply position, the water from the storage tank can be delivered using means for pressurizing water to the same treatment unit for treatment, then through the diverter valve and to a point of water use device.

Abstract: A water distribution system having a dual use water treatment unit. The same water treatment unit can be used to treat water supplied from a fill port to a storage tank during a fill operation, as well as water leaving the storage tank for supply to one or more points of water use during a supply operation. When a diverter valve is in a fill position, water supplied to the fill port can flow through the diverter valve and to the water treatment unit for treatment then to the storage tank for storage. When the diverter valve is in a supply position, the water from the storage tank can be delivered using means for pressurizing water to the same treatment unit for treatment, then through the diverter valve and to a point of water use device.

Abstract: A water distribution system including a water storage tank, a water treatment unit, a diverter valve, and interconnecting water conduits arranged so that the same water treatment unit can be used to treat water supplied from a fill port to the storage tank during a fill operation, as well as water leaving the storage tank for supply to one or more points of water use during a supply operation. A diverter valve is provided which is movable between a fill position wherein the water treatment unit is in fluid communication with the fill port and not the point of water use device, and a supply position wherein the water treatment unit is in fluid communication with the at least one point of water use device and not the fill port. When the diverter valve is in the fill position, water supplied to the fill port can thus flow through the diverter valve and to the water treatment unit for treatment then to the storage tank for storage.

Abstract: A water distribution system including a water storage tank, a water treatment unit, a diverter valve, and interconnecting water conduits arranged so that the same water treatment unit can be used to treat water supplied from a fill port to the storage tank during a fill operation, as well as water leaving the storage tank for supply to one or more points of water use during a supply operation. A diverter valve is provided which is movable between a fill position wherein the water treatment unit is in fluid communication with the fill port and not the point of water use device, and a supply position wherein the water treatment unit is in fluid communication with the at least one point of water use device and not the fill port. When the diverter valve is in the fill position, water supplied to the fill port can thus flow through the diverter valve and to the water treatment unit for treatment then to the storage tank for storage.

Abstract: Water is supplied to a water user outlet facility by maintaining a tappable flow of water in a recirculating loop that includes a pump such as a centrifugal pump driven by a substantially constant speed motor to establish the flow, a water delivery path that extends from the pump to the outlet facility, and a water return path that extends from the outlet facility back to the pump. The flow is permitted to be controllably tapped at the facility by a water user while directing any untapped portion of the flow into the water return path. Such recirculation avoids stagnation and thereby impedes deterioration in the potability of the water. Further such recirculation makes the recirculating loop and water within the loop less sensitive to the temperature of the surrounding environment. The recirculating loop may include a water purifier such as an ultra-violet lamp source to kill organic contaminants and, as well, may include a filter to remove inorganic material.

Abstract: Water is supplied to a water user outlet facility by maintaining a tappable flow of water in a recirculating loop that includes a pump such as a centrifugal pump driven by a substantially constant speed motor to establish the flow, a water delivery path that extends from the pump to the outlet facility, and a water return path that extends from the outlet facility back to the pump. The flow is permitted to be controllably tapped at the facility by a water user while directing any untapped portion of the flow into the water return path. Such recirculation avoids stagnation and thereby impedes deterioration in the potability of the water. Further such recirculation makes the recirculating loop and water within the loop less sensitive to the temperature of the surrounding environment. The recirculating loop may include a water purifier such as an ultra-violet lamp source to kill organic contaminants and, as well, may include a filter to remove inorganic material.

Abstract: Apparatus for treating water or other fluid with radiant energy from an ultraviolet lamp includes a helical shaped input fluid flow guide or helical ramp disposed at or near one end an elongated annular chamber around the lamp. The guide or ramp serves to impart input spiral flow momentum to the fluid upon entry to the chamber. A corresponding output fluid flow guide or helical ramp may be disposed at or near the opposed end of the chamber to impart output spiral flow momentum to the fluid as it approaches discharge from the chamber. Spiral flow serves to extend the time that the fluid is exposed to ultraviolet light and thereby increases the probability that any microbiological contaminants present in the fluid will be killed. The use of helical shaped guides or ramps better serves to establish such a flow in circumstances where the available fluid pressure is relatively low.