Basf Se Corporation

Jürgen Wortmann

Stephan Maurer

Michael Ladenberger

Kerstin Schierle-Arndt

Michael Lutz

Florian Garlichs

Katharina Federsel

Karolin Geyer

Martin Gärtner

Otto Machhammer

Frieder Borgmeier

Michael Koch

Sabine Weiguny

Katharina Kaleta

Johan Ter Maat

Günther Huber

Markus Ostermayr

Fabian Seeler

Jan Spielmann

Feelly Ruether

Felix Major

Michael Landenberger

Claus Schäfer

Ter Maat Johan

The invention relates to a method for operating a linearly concentrating solar power plant (), in which a heat transfer medium flows through a pipeline loop () having at least one receiver, the heat transfer medium having a flow velocity which is such that the flow in the pipeline loop () is turbulent, at least part of the heat transfer medium, upon exit from the pipeline loop (), being extracted and recirculated into the pipeline loop (). Furthermore, the invention relates to a linearly concentrating solar power plant with at least one pipeline loop () having at least one receiver in which a heat transfer medium flowing through the pipeline loop () is heated by irradiating solar energy, a mixing device () being comprised, in which at least part of the heat transfer medium flowing through the pipeline loop () is mixed with heat transfer medium to be delivered.

Method for operating a linear concentrator solar power plant, and linear concentrator solar power plant

At least two series-connected storage cells have hot liquid supplied to or removed from a first cell and cold liquid supplied to, or removed from, a final cell. The liquid temperature decreases from the first cell to the final cell. Individual cells are connected from the warmer cell lower region to the colder cell upper region. At least one cell is closed by a cover forming a gas space between the liquid and the cover. A gas line branches off from the gas space entering into the liquid of a colder cell or into the liquid in the connection of two adjacent cells. At least one of the adjacent cells has a lower temperature than that of the cell from the gas space of which the gas line branches off.

Apparatus having at least two series-connected storage cells for storing a liquid

A pipeline system in a linearly concentrating solar power station comprises at least one pipeline which is connected at one end to a converger and at a second end to a distributor. The converger and the distributor are arranged at a different geodetic height. When the converger lies on top pressurized gas can be fed into the converger and the distributor is connected to a drainage container. When the distributor lies on top pressurized gas can be fed into the distributor and the converger is connected to a drainage container. The drainage container is lower than the converter and the distributor.

Pipeline system and drainage container for receiving liquid flowing through a pipeline system

The invention relates to a solar power plant with a first heat transfer medium circuit and with a second heat transfer medium circuit, in which the first heat transfer medium circuit comprises a store () for hot heat transfer medium and a store () for cold heat transfer medium and also a pipeline system () connecting the stores () for hot heat transfer medium and for cold heat transfer medium and leading through a solar array (), and the second heat transfer medium circuit comprises a pipeline system () connecting the stores () for hot heat transfer medium and for cold heat transfer medium and in which at least one heat exchanger () for the evaporation and superheating of water is accommodated, the at least one heat exchanger () having a region through which the heat transfer medium flows and a region through which water flows, said regions being separated by a heat-conducting wall, so that heat can be transmitted from the heat transfer medium to the water. Each heat exchanger () has a break detection system (), by means of which a possible break of the heat-conducting wall can be detected, and valves () for the closing of supply lines () and outflow lines () for heat transfer medium and water, upon the detection of a break the valves () in the supply lines () and outflow lines () for heat transfer medium and water being closed.

Solar power plant comprising a first heat transfer circuit and a second heat transfer circuit

The invention relates to a device for storing heat, comprising a heat storage medium which absorbs heat in order to store heat and releases heat in order to use the stored heat, and a container for holding the heat storage medium, the container being closed by a gastight cover, and the device comprising volume compensation means in order to compensate for a volume increase of the heat storage medium () due to a temperature rise and a volume decrease due to a temperature reduction. The invention furthermore relates to a method for storing heat, in which heat is transferred to a heat storage medium in order to store heat or heat is discharged from the heat storage medium to the heat carrier in order to use the heat, the heat storage medium being held in a container which is closed by a gastight cover, wherein a volume expansion of the heat storage medium () is compensated for by a volume increase of the container () or by heat storage medium () flowing out of the container () into a buffer container (), and a volume decrease of the heat storage medium () is compensated for by a volume decrease of the container () or by heat storage medium () flowing out of the buffer container () into the container ().

Device and method for storing heat

The invention relates to a device for heat transfer, comprising a low temperature heat exchanger () and a high temperature heat exchanger (), the heat exchangers () being connected to one another by means of a connecting line such that a heat transfer medium flows through the high temperature heat exchanger () and through the low temperature heat exchanger () in succession, at least one dwell time tank () being arranged in the connecting line.

Heat transfer device

Method of maintaining or widening the long-term operating temperature range of a heat transfer medium and/or heat storage medium comprising a nitrate salt composition selected from the group consisting of alkali metal nitrate and alkaline earth metal nitrate and optionally alkali metal nitrite and alkaline earth metal nitrite, wherein the nitrate salt composition is brought into contact with an additive comprising the components nitric acid and/or nitrous acid and oxygen-comprising gas having an oxygen partial pressure which is equal to or greater than that in air and/or oxygen-generating compounds and optionally nitrogen oxides and/or compounds which generate further nitrogen oxide.

Method of improving nitrate salt compositions by means of nitric acid for use as heat transfer medium or heat storage medium

The invention relates to a pipeline system for a linearly concentrating solar power plant () with at least one receiver line (), in which a heat transfer medium is heated by radiating solar energy, or with a central receiver and at least one emptying tank () and/or one store for the heat transfer medium, the heat transfer medium having a vapor pressure of less than 0.5 bar at the maximum operating temperature. Furthermore, a gas displacement system () is comprised, which connects gas spaces in the at least one emptying tank () and/or in the store for the heat transfer medium to one another and which has a central gas store () and/or a central gas connection () and a central exhaust gas outlet (), through which gas can be discharged into the surroundings.

Pipeline system for a solar power plant

Described is a pipeline system for conveying a salt melt, comprising at least one pipeline () through which the salt melt flows, at least one inlet and at least one outlet, wherein the pipeline () through which the salt melt flows has at least one gradient inclined with respect to the horizontal and is respectively connected at the lowest positions via a drainage valve () to a drainage line () and at the highest positions to a venting valve (). Also described is a method for draining the pipeline system.

Pipeline system and method for draining a pipeline system

The invention relates to an apparatus for heating a pipeline system, comprising at least two pipelines (), along which in each case one electrical resistance heating element extends, wherein a potential close to the ground potential is set at each electrical resistance heating element at at least one end (), and the electrical resistance heating element is connected to a terminal of a DC source or to in each case one phase () of an n-phase AC source () at a position remote from this end (), where, when using an n-phase AC source (), n is an integer equal to or greater than 2.

Apparatus for heating a pipeline

A nitrate salt composition comprising A) an alkali metal nitrate and optionally an alkali metal nitrite in a total amount in the range from 90 to 99.84% by weight and B)an alkali metal compound selected from the group B1) alkali metal oxide, B2) alkali metal carbonate, B3) alkali metal compound which decomposes into alkali metal oxide or alkali metal carbonate in the temperature range from 250&#xb0; C. to 600&#xb0; C., B4) alkali metal hydroxide MetOH, in which Met is lithium, sodium, potassium, rubidium, cesium, B5) alkali metal peroxide MetO, in which Met is lithium, sodium, potassium, rubidium, cesium, and B6) alkali metal superoxide MetO, in which Met is sodium, potassium, rubidium, cesium, in a total amount in the range from 0.16 to 10% by weight, in each case based on the nitrate salt composition.

Nitrate salt compositions comprising alkali metal carbonate and their use as heat transfer medium or heat storage medium

The invention relates to a pipeline for carrying a molten salt, with a pipe wall that is stable with respect to the temperatures occurring. A heating conductor () is provided inside the pipeline () for heating, the heating conductor () preferably not lying against the inner wall of the pipeline ().

Growing community of inventors

Limburgerhof, Germany

Jürgen Wortmann