There is provided an air pressure system for controlling an air compressor in real time in accordance with the actual usage of compressed air by a plurality of terminals. Furthermore, in case pressure losses change abruptly, unwanted electric power is prevented from being consumed by a stable operation free of response delays on the basis of a predicted model that assesses time lags of volume responses. There is provided an air pressure system for supplying compressed air discharged from an air compressor through an air tank and a piping system to a plurality of terminals that consume the compressed air, including a compressor pressure sensor for measuring the pressure of compressed air discharged from the air compressor, a plurality of terminal pressure sensors for measuring the pressures of compressed air supplied respectively to the terminals, a flow rate difference calculating device for calculating deviation information on the basis of a capacity of the air tank, information on the piping system, the pressure of compressed air discharged from the air compressor, and the pressures of compressed air supplied respectively to the terminals, and a control device for controlling operation of the air compressor on the basis of the deviation information.

A wool-like fiber member that has high permeability and low absorbability is disposed around a discharge port of a discharge pipe that is configured to discharge condensate and compressed air stored within a tank.

A wool-like fiber member that has high permeability and low absorbability is disposed around a discharge port of a discharge pipe that is configured to discharge condensate and compressed air stored within a tank.

Disclosed techniques include working fluid exergy recovery using hybrid processing. A supply of working fluid at a first pressure and a first temperature is accessed. The working fluid is compressed. The compressing yields the working fluid at a second pressure. The second pressure is greater than the first pressure. The working fluid at the second pressure and a second temperature is warmed using a first heat exchanger. The second temperature is greater than the first temperature. The working fluid at the second temperature is in a gaseous state. The working fluid is expanded in a gaseous state to a third pressure. The expanding is accomplished using a first liquid piston expander. An engine is driven to recover work from the working fluid in a gaseous state. The engine is powered by liquid from the first liquid piston expander.

Presented and described herein is a stroke system (1) for dosing a fluid from a container (3), comprising a piston pump (5) with a piston (7), so that a fluid can be dosed from a container (3) by displacement of the piston (7), and a temperature control device (29) for controlling the temperature of the fluid to be dosed by means of the stroke system (1).

Presented and described herein is a stroke system (1) for dosing a fluid from a container (3), comprising a piston pump (5) with a piston (7), so that a fluid can be dosed from a container (3) by displacement of the piston (7), and a temperature control device (29) for controlling the temperature of the fluid to be dosed by means of the stroke system (1).

An air compressor includes a motor provided with a basic insulation, a first air compressing unit and a second air compressing unit that are driven by the motor, at least two tanks, and a discharge port. The at least two tanks are connected to the first air compressing unit and the second air compressing unit, store air compressed by the first air compressing unit and the second air compressing unit, and are connected to one another in series. The discharge port is disposed to a tank positioned on a most downstream of supplied compressed air and discharges the compressed air. The motor, the first air compressing unit and the second air compressing unit, and a tank on an upstream side with respect to the tank positioned on the most downstream are electrically insulated from the tank positioned on the most downstream and the discharge port.

An air compressor includes a motor provided with a basic insulation, a first air compressing unit and a second air compressing unit that are driven by the motor, at least two tanks, and a discharge port. The at least two tanks are connected to the first air compressing unit and the second air compressing unit, store air compressed by the first air compressing unit and the second air compressing unit, and are connected to one another in series. The discharge port is disposed to a tank positioned on a most downstream of supplied compressed air and discharges the compressed air. The motor, the first air compressing unit and the second air compressing unit, and a tank on an upstream side with respect to the tank positioned on the most downstream are electrically insulated from the tank positioned on the most downstream and the discharge port.

Devices and methods for monitoring the temperature of tissue at various locations in a treatment volume during fluid enhanced ablation therapy are provided. In one embodiment, an ablation device is provided having an elongate body, at least one ablation element, and at least one temperature sensor. The elongate body includes a proximal and distal end, an inner lumen, and at least one outlet port to allow fluid to be delivered to tissue surrounding the elongate body. The at least one ablation element is configured to heat tissue surrounding the at least one ablation element. The at least one temperature sensor can be positioned a distance away from the at least one ablation element and can be effective to output a measured temperature of tissue spaced a distance apart from the at least one ablation element such that the measured temperature indicates whether tissue is being heating to a therapeutic level.

Devices and methods for monitoring the temperature of tissue at various locations in a treatment volume during fluid enhanced ablation therapy are provided. In one embodiment, an ablation device is provided having an elongate body, at least one ablation element, and at least one temperature sensor. The elongate body includes a proximal and distal end, an inner lumen, and at least one outlet port to allow fluid to be delivered to tissue surrounding the elongate body. The at least one ablation element is configured to heat tissue surrounding the at least one ablation element. The at least one temperature sensor can be positioned a distance away from the at least one ablation element and can be effective to output a measured temperature of tissue spaced a distance apart from the at least one ablation element such that the measured temperature indicates whether tissue is being heating to a therapeutic level.