DE102006033816A1 - Method for generating electrical energy and arrangement for carrying out the method - Google Patents

Abstract

The invention relates to a method for generating electric energy from radiant energy, in particular solar radiation, and to an arrangement for carrying out the method according to the invention. In this case, a heat transfer medium is heated by means of a solar collector (1) and fed after heating a thermoelectric generator (2), which is acted upon on its one side with the temperature of the heated heat transfer medium and is acted upon at its other side with a lower temperature, so that a sufficient for generating a voltage temperature difference is generated and the medium is transported by laminar or turbulent flow.

Description

The The invention relates to a method for generating electrical energy from radiant energy, in particular solar radiation and an arrangement for execution the method according to the invention.

It is known, from radiant energy, in particular solar radiation, To gain energy.

to Obtaining electric power is known to be photovoltaic elements use.

For this have been extensively researched and developed in recent years carried out.

Now This type of production of electric energy is widely used and is going big in the state Extent promoted.

adversely Here are the still low efficiencies of photovoltaic Elements and the associated low energy yield.

Also the use of solar radiation by means of radiation collectors is known and in particular solar panels which serve radiation energy in heat convert. For this purpose, absorbers are used with which the radiation energy caught up and into heat energy is implemented. The heat energy generated in the absorber is then transferred to a heat transfer medium, that in a heat carrier ladder circulates, wherein the heat carrier conductor with the absorber usually in thermally conductive connection stands. The heat transfer medium is currently used, for example, for heating rooms, swimming pools or be used.

task The invention is a method and an arrangement for generating of electric energy to propose, which the disadvantages of the well-known Prior art eliminates and using solar radiation Provides electrical energy.

The solution the task of the invention arises from the characterizing features of claim 1 in Connection with the characteristics of the generic term. Further advantageous Embodiments of the invention will become apparent from the dependent claims.

The invention is based on the 1 to 7 be explained in more detail.

The solution according to the invention 1 has a solar panel 1 on, by means of which a heat transfer medium is heated. For this purpose, preferably a heat transfer medium is selected, which is suitable for high temperatures. The heated heat transfer medium becomes a profile through laminar or turbulent flow 3 fed and heated this.

With the profile 3 is a known thermoelectric generator 2 connected to his profile 3 opposite side is connected to a cooling element.

Due to the temperature difference thus generated creates a voltage at the terminals of the thermoelectric generator 2 ,

The heat transfer medium is after flowing through the profile 3 and thereby reduced heat energy capacity fed back to the collector for heating. This cycle of the heat transfer medium is realized by means of known pump technology.

Increasing the temperature difference improves the energy yield from the thermoelectric generator 2 and is to be realized by the following further embodiments of the inventive solutions.

So shows 2 An embodiment of the solution according to the invention, in which the heating of one side of the thermoelectric generator 2 through the circulation of the heated heat transfer medium as in 1 is executed, the cooled side of the thermoelectric generator 2 however with a profile 4 which is connected by one in a cooler 7 cooled coolant is flowed through, which is permanently cooled in a cooling circuit.

3 shows an embodiment of the solution according to the invention, in which the heat transfer medium in a memory 5 is cached and from this from the profile 3 is supplied. With this inventive embodiment of the solution buffering of the stored heat energy is possible, which allows, for example, in the night hours continuous energy.

Another Varainte the solution of the invention shows 4 , Behind the store 5 is a heat transformer 6 arranged in which the heat transfer medium further heated by desorption and the profile 3 fed and from there to the heat transformer 6 is returned. The cold side of the system is through the heat transformer 6 cooled and fed to the refrigeration cycle.

5 shows a variant, according to which the heat transfer medium after passing through the profile 3 is returned to the collector.

In 6 a variant is shown, according to which the heat transfer medium via the collector 1 and through the heat transformer 6 is heated, the profile 3 fed and over the memory 5 to the collector 1 is returned.

The cold side of the system is cooled by the heat transformer and supplied to the refrigeration cycle.

The thermoelectric generator is as in all other variants described between the profiles 3 (warm and ( 4 ) stored.

Of the Warmth- as well as the refrigeration cycle are flowed through laminar or turbulent.

In night mode, the collector 1 switched off and the heat transformer 6 is about the memory 5 operated.

7 shows a variant according to which the heat transfer medium by means of a collector 1 and heat transformer 6 is heated and after flowing through the profile 3 to the store 5 and from this to the collector 1 is directed.

In night mode, the collector 1 switched off and the heat transformer 6 is about the memory 5 operated.

Claims (7)

Method for generating electrical energy, characterized in that by means of a solar collector ( 1 ) heats a heat transfer medium and after heating a thermoelectric generator ( 2 ) is supplied, which is acted upon on its one side with the temperature of the heated heat transfer medium and is acted upon at its other side with a lower temperature, so that sufficient for generating a voltage temperature difference is generated and the medium is transported by laminar or turbulent flow , Arrangement for carrying out the method according to claim 1, characterized in that a collector ( 1 ) with a profile ( 3 ) for receiving a thermoelectric generator ( 2 ) is connected by means of a pipeline and the profile has a return to the collector and that of the thermoelectric generator ( 2 ) on his profile ( 3 ) facing away from a cooling element is connected. Arrangement according to claim 2, characterized in that the cooled side of the thermoelectric generator ( 2 ) with a profile ( 4 ), which is flowed through by a coolant, which is permanently cooled in a cooling circuit. Arrangement according to claim 2, characterized in that between the collector ( 1 ) and the profile ( 3 ) a memory ( 5 ) is arranged and from this the heat transfer medium the profile ( 3 ) is to be supplied. Arrangement according to claim 2, characterized in that after the memory ( 5 ) a heat transformer ( 6 ) is arranged, in which the heat transfer medium further heated by desorption and the profile ( 3 ) and that the profile ( 3 ) a return flow to the heat transformer ( 6 ) and that the heat transformer with its cold side with the profile ( 4 ) and provided with a return. Arrangement according to claim 2, characterized in that the collector ( 1 ) with a heat transformer ( 6 ) and this one with its warm side with the profile ( 3 ) and a return for the heat transfer medium to the collector ( 1 ) and the cold side of the heat transformer ( 6 ) with a profile ( 4 ) in a cooling circuit with the cold side of the heat transformer ( 6 ) connected is. Arrangement according to claim 2, characterized in that the collector ( 1 ) switchable with the memory ( 5 ) and the heat transformer ( 6 ) and the heat transformer ( 6 ) via a cooling circuit with the profile ( 4 ) and the return from the profile ( 3 ) with the memory ( 5 ), the collector ( 1 ) and the heat transformer ( 6 ) over the memory ( 5 ) is to operate.