An underwater compressed air storage device with at least one underwater compressed air tank, positioned on the floor (7) of a body of water and provided with at least one water outlet opening and at least one inlet opening (11, 13) for a mixture of water and air. A tank which has at least one compressed air storage volume provided with two connecting ducts (9, 11) between said volume and a collection chamber (5) for the water and air mixture, a first duct (9) located in the upper part of the volume ensuring the passage of compressed air in the volume and a second duct (11), at an altitude lower than the first duct (9), ensuring the passage of the water and air mixture in the volume, said tank also having at least one opening for discharging the degassed water into the body of water.

The invention relates to a device (10) for supplying a fuel consumer (1) of a vehicle (20) with a gaseous fuel. The device (10) comprises multiple pressure accumulators(2) for storing and providing pressurised fuel, as well as a discharge device (3), which fluidically connects the multiple pressure accumulators (2) with the fuel consumer (1). In order to advantageously allow for a utilisation of a temperature change occurring during a fuel discharge, preferably a discharge cold temperature released during the discharge of fuel, according to the invention, the discharge device (3) is thermally coupled to a coolant circuit (4) of the vehicle (20). The invention also relates to a vehicle (20) comprising a device (10) of this type.

A multi-vessel fluid storage and delivery system is disclosed which is particularly useful in systems having internal combustion engines which use gaseous fuels. The system can deliver gaseous fluids at higher flow rates than that which can be reliably achieved by vapor pressure building circuits alone, and that keeps pressure inside the storage vessel lower so that it reduces fueling time and allows for quick starts thereafter. The system is designed to store gaseous fluid in liquefied form in a plurality of storage vessels including a primary storage vessel fluidly connected to a pump apparatus and one or more server vessels which together with a control system efficiently stores a liquefied gaseous fluid and quickly delivers the fluid as a gas to an end user even when high flow rates are required. The system controls operation of the pump apparatus as a function of the measured fluid pressure, and controls the fluid pressure in a supply line according to predetermined pressure values based upon predetermined system operating conditions.

A hydrogen filling system includes a first tank and a second tank that are configured to be filled with hydrogen and communicate with each other, a first hydrogen feeder and a second hydrogen feeder configured to feed hydrogen to the first tank and the second tank, and a controller configured to control the first hydrogen feeder and the second hydrogen feeder. The controller estimates a hydrogen fill factor of the first tank and the second tank, based on a first internal temperature of the first tank and a second internal temperature of the second tank, and a first pressure of hydrogen gas fed from the first hydrogen feeder and a second pressure of hydrogen gas fed from the second hydrogen feeder. The controller is configured to stop the first hydrogen feeder and the second hydrogen feeder when the hydrogen fill factor reaches a predetermined threshold fill factor.

A method for adjusting temperature and/or pressure of fuel in a pressured container system of a vehicle to a respective temperature setpoint and/or a respective pressure setpoint before a process of filling the pressurized containers includes extracting fuel from a first pressurized container having a first temperature and a first pressure, to bring the first temperature and/or the first pressure of the fuel closer to the temperature setpoint and/or to the pressure setpoint of the first pressurized container. The method also includes supplying the extracted fuel to either a fuel conversion device to power the vehicle or into a second pressurized container, where fuel in the second pressurized container has a second temperature and a second pressure, to bring the second temperature and/or the second pressure of the fuel closer to the temperature setpoint and/or to the pressure setpoint of the second pressurized container. The temperature setpoints and/or the pressure setpoints are determined such that, without exceeding the respective maximum operating pressure and the respective maximum operating temperature of the respective pressurized container, the amount of fuel introduced from a single filling source by a process of filling the pressurized containers which is carried out at the same time and for the same length of time is maximized.

The invention relates to a method for operating a tank system (10) comprising a number of at least two tanks (21, 22, 23, 24, 25), which are connected in parallel and which contain a gaseous substance, and in which an interior pressure (PX) prevails, for supplying a consumer unit (12), which requires a full load volume of the gaseous substance, wherein each tank (21, 22, 23, 24, 25) has a safety valve (31, 32, 33, 34, 35), which shuts down the tank if a flow volume of the gaseous material through the safety valve (31, 32, 33, 34, 35) exceeds a shut-off volume. If the interior pressure (PX) in at least one tank (21, 22, 23, 24, 25) falls below a first threshold, at least one other tank (21, 22, 23, 24, 25) that was previously shut down is connected.

A multi-vessel fluid storage and delivery system is disclosed which is particularly useful in systems having internal combustion engines which use gaseous fuels. The system can deliver gaseous fluids at higher flow rates than that which can be reliably achieved by vapor pressure building circuits alone, and that keeps pressure inside the storage vessel lower so that it reduces fueling time and allows for quick starts thereafter. The system is designed to store gaseous fluid in liquefied form in a plurality of storage vessels including a primary storage vessel fluidly connected to a pump apparatus and one or more server vessels which together with a control system efficiently stores a liquefied gaseous fluid and quickly delivers the fluid as a gas to an end user even when high flow rates are required. The system controls operation of the pump apparatus as a function of the measured fluid pressure, and controls the fluid pressure in a supply line according to predetermined pressure values based upon predetermined system operating conditions.

A fluid supply warning and communication system including a digital regulator in fluid tight engagement with a primary fluid reservoir. A method of using the fluid supply warning and communication system by flowing a fluid from a primary fluid reservoir to an end use appliance and detecting flow rate and pressure of the fluid with a digital regulator. A gas supply warning and communication system including an oxygen flow monitor that monitors SpO2, flow rate, pulse rate, and battery levels. A method of using the gas supply warning and communication system by flowing oxygen from a primary gas reservoir to an end use appliance, and measuring SpO2, flow rate, pulse rate, tank status, and battery levels.

A multi-vessel fluid storage and delivery system is disclosed which is particularly useful in systems having internal combustion engines which use gaseous fuels. The system can deliver gaseous fluids at higher flow rates than that which can be reliably achieved by vapor pressure building circuits alone, and that keeps pressure inside the storage vessel lower so that it reduces fueling time and allows for quick starts thereafter. The system is designed to store gaseous fluid in liquefied form in a plurality of storage vessels including a primary storage vessel fluidly connected to a pump apparatus and one or more server vessels which together with a control system efficiently stores a liquefied gaseous fluid and quickly delivers the fluid as a gas to an end user even when high flow rates are required. The system controls operation of the pump apparatus as a function of the measured fluid pressure, and controls the fluid pressure in a supply line according to predetermined pressure values based upon predetermined system operating conditions.

The invention relates to a method for operating a tank system (10) comprising a number of at least two tanks (21, 22, 23, 24, 25), which are connected in parallel and which contain a gaseous substance, and in which an interior pressure (PX) prevails, for supplying a consumer unit (12), which requires a full load volume of the gaseous substance, wherein each tank (21, 22, 23, 24, 25) has a safety valve (31, 32, 33, 34, 35), which shuts down the tank if a flow volume of the gaseous material through the safety valve (31, 32, 33, 34, 35) exceeds a shut-off volume. If the interior pressure (PX) in at least one tank (21, 22, 23, 24, 25) falls below a first threshold, at least one other tank (21, 22, 23, 24, 25) that was previously shut down is connected.