The system comprises a liquid circuit with a liquid containment unit.

The steam power plant according to the invention has the liquid/vapour circuit.

The control unit includes a liquid circuit (202) with temperature control, and an air circuit for providing the pressurized air.

The coolant circuit (10) of the internal combustion engine (1) is integrated in said liquid circuit.

The invention provides a method of controlling silica in the liquor circuit of the Bayer process.

The method includes adding one or more particular silane based small molecules to the liquor fluid circuit.

The invention provides a method of inhibiting the accumulation of DSP scale in the liquor circuit of Bayer process equipment.

When engaged the flow of fluid around a fluid circuit is controlled to optimise separation.

A method and an apparatus for determining the molecular weight by osmometry in which a fluid circuit is used having two pressure measurement zones (26, 30).

Alternatively, an earth to air heat exchanger can use a liquid circuit instead of an air circuit, with a heat exchanger (battery) on the supply air.

A partial flow is taken from the liquid circuit of the condensed vapours and subsjected in a diaphragm process to material separation, while the remainder of the liquid stream is returned to the first operative stage.

The primary or cooling circuit comprises a liquid-air exchanger (4) and a liquid-liquid exchanger (3).

The system comprises a liquid circuit with a liquid containment unit.

The fluid delivery apparatus (100) to a pressurized fluid system.

As a liquid for the saturated liquid-vapour circuit, a solution can be used.