DE102017109858A1 - Method and device for effective energy utilization - Google Patents

Abstract

The invention relates to a method and a system for effective energy utilization and is applicable to the energy supply of buildings, especially in the heating and the hot water supply. The method according to the invention is based on the fact that electric energy obtained by means of regenerative energy carriers is used intelligently for heating purposes. The system according to the invention comprises a system for the effective utilization of energy, comprising a control module (3) and a heating system (4) with a flow (4a) and return (4b) through which a liquid heat carrier (6) flows electric heating element (5).

Description

The invention relates to a method and a system for effective energy utilization and is applicable to the use of electrical energy and the energy supply of buildings, especially in the heating and the hot water supply.

In electricity production with wind turbines and solar cells, there are phases with very high electricity production due to strong wind or strong solar radiation. It may happen that the electricity production is regionally higher than the consumption. The surplus power must then be stored to be fed into the grid in phases of lesser production. However, this succeeds only partially, since suitable storage options are complex and limited in their capacity. New technologies for power storage such. B. Batteries or pumped storage power plants are usually expensive or require lengthy planning and approval procedures. The concept of transporting surplus power to Scandinavia via the transmission line to store it in the pumped storage power plants is efficient, but also associated with high costs. New power lines for managing surplus electricity in regions of higher consumption (eg from the coast to Bavaria) are hampered by the lengthy approval procedures and high costs. This can lead to the shutdown of wind turbines and thus to the destruction of energy during periods of strong wind. According to forecasts, the share of surplus electricity will increase to around 8% of the total amount by 2050, with further expansion of renewable energies.

The use of excess electrical energy for the splitting of water into hydrogen and oxygen is complex on the system side and safety-related.

The invention has for its object to provide a method and a system for effective energy utilization, which counteract the destruction of energy and allow a simple and inexpensive use of excess electrical energy.

This object is achieved by the features in claims 1 and 7. Advantageous embodiments of the invention are contained in the subclaims.

In Germany, about 75% of private households are currently heated with gas or oil.

According to the invention, an electrical device or an electric heating element for heating water, for example, a commercial water heater, installed in the existing heating system, such as a central heating, directly in front of the boiler in the coming from the house or building return line. The example designed as a water heater electric heating element is remotely controlled by an energy provider via an Internet connection. If excess power production occurs, eg. B. in periods of strong wind, the power supplier switches on the electric heating element directly or transmits a signal that can be turned on, for example, designed as a water heater electric heating element. The returning water of the heating system is now heated by the example designed as a water heater electric heating element. The gas / oil heater automatically detects that the water is warm and shuts off. The house or building is now heated electrically only by the excess electrical energy. There is no gas or oil consumed. If the excess power production decreases, such as when the wind is blowing down, the electricity supplier switches off the electric heating element designed, for example, as a continuous flow heater directly or indirectly. The water of the heating system is no longer electrically heated by the excess electrical energy, the gas / oil boiler switches on again when the temperature drops and the house or building is again heated conventionally.

A particular advantage of the invention is the effective utilization of excess electrical energy by using electric energy generated by regenerative energy sources intelligently controlled for heating purposes.

Excess electrical energy in the context of the present invention is obtained by means of renewable energy electrical energy that has already been incurred and has no conventional use and is not intended for storage.

A high energy efficiency results from the fact that the renewable energy sources are wind energy and / or solar energy and at the time of extraction unnecessary, ie excess electric power is fed controlled for heating purposes. A high energy efficiency also results from the high efficiency of the electric heating elements available today, which convert the generated from wind energy and / or solar energy and not needed at the time of extraction, so controlled excess electrical energy into heat.

Due to the fact that the electricity that is not needed at the time of extraction, ie excess electrical energy, is remotely controlled by the local energy supplier Heating purposes is fed, a reliable operation of the system is guaranteed.

Also, by the fact that the gas or oil boiler turns back on and the house is heated conventionally again, when the electricity supplier, the electrical heating element directly or indirectly off again when wind abflauendem again, a reliable operation of the system is guaranteed.

This system technology is simple and robust and easy to use, the electric energy heats a flowing through a liquid heat transfer medium heating element, such as a water heater. In this case, the electrical energy replaced at least temporarily the energy sources conventionally used for heating purposes such as gas or oil in whole or in part.

The inventive concept makes it possible to use commercially available devices. Remote controlled electrical heating elements, such as instantaneous water heaters, are available on the market, and each modern gas or oil fired boiler measures the return temperature of the heat carrier and turns on or off depending on the temperature setting. The energy supplier must ensure the control of the electrical heating elements and the collection and billing of the amount of electrical energy consumed.

• - Überschüssige Energie kann hier besonders bei flächendeckender Anwendung sinnvoll verwendet werden.
• - Gleichzeitig vermindert sich der Verbrauch von Gas und Öl.
• - Schadstoffausstoß und CO 2 - Ausstoß werden vermindert.
• - Im Gegensatz zu rein elektrisch betriebenen Heizungsanlagen wie Wärmepumpen kann das Haus oder das Gebäude jederzeit auch wieder mit der Gasheizung beheizt werden, es ist also kein Engpassmanagement notwendig.
• - Die Erfindung ist schnell umsetzbar, da keine Genehmigungen oder Baumaßnahmen erforderlich sind.
• - Investitionen in Stromnetze und teure Speichertechnologien sind nicht notwendig.
• - Die Anschaffung und der Einbau des beispielsweise als Durchlauferhitzer ausgebildeten elektrischen Heizelementes ist für den Endkunden preiswert.
• - Die Erfindung ist auch in technisch weniger entwickelten Ländern leicht einsetzbar.

The invention realizes the following advantages:

• - Excess energy can be used here, especially in area-wide application.
• - At the same time, the consumption of gas and oil is reduced.
• - Pollutant emissions and CO 2 emissions are reduced.
• - In contrast to purely electrically operated heating systems such as heat pumps, the house or the building can be heated again at any time with the gas heating, so there is no congestion management necessary.
• The invention can be implemented quickly, since no permits or construction measures are required.
• - Investments in power grids and expensive storage technologies are not necessary.
• - The purchase and installation of the example designed as a water heater electric heating element is inexpensive for the end customer.
• The invention can also be used in technically less developed countries.

• 1 zeigt eine Übersichtsdarstellung des erfindungsgemäßen Systems zur effektiven Energieausnutzung. Mittels einer Windkraftanlage 1 wird Windenergie durch einen Generator 1a in elektrische Energie umgewandelt. Die elektrische Energie wird über den Elektroenergieversorger 2 in das Netz eingespeist.

The invention will be described below with reference to at least partially in the 1 illustrated embodiments will be explained in more detail.

• 1 shows an overview of the system according to the invention for the effective use of energy. By means of a wind turbine 1, wind energy is converted by a generator 1a into electrical energy. The electrical energy is fed via the electric power supplier 2 in the network.

If there is now an overproduction of electrical energy, which is not needed in normal network operation, then this excess electrical energy via a control module 3 the electric energy supplier 2 a house connection in, for example, a residential building 7 fed. In the residential house 7 is a traditional central heating system 4 based on oil or gas with one of a liquid heat carrier 6 flowed through heating circuit with flow 4a and return 4b Installed. In the return 4b of the heating circuit according to the invention, for example, designed as a water heater electrical heating element 5 arranged, which by means of superfluous electrical energy, controlled by the control module 3 , can be acted upon and thereby heated.

The control module 3 is remotely controllable, for example, via radio, the Internet or wired via the conventional power supply line trained.

The invention is not limited to the embodiments shown here. Rather, it is possible to realize by variation and combination of the features mentioned further embodiments of the invention, without departing from the scope of the invention.

LIST OF REFERENCE NUMBERS

1

Wind turbine

1a

generator

2

Electric utilities

3

control module

4

Central heating system

4a

leader

4b

returns

5

Heating element, instantaneous water heater

6

heat transfer

7

residential building

Claims (10)

Method for the effective utilization of energy, characterized in that using regenerative energy sources, not intended for conventional use or storage electric power is used intelligently controlled for heating purposes. Method according to Claim 1 , characterized in that the regenerative energy sources are wind energy and / or solar energy and at the time of extraction not required, so excess electric power is fed controlled for heating purposes. Method according to Claim 1 or 2 , characterized in that the not intended for conventional use or storage or not needed at the time of extraction, so excess electrical energy is supplied remotely controlled by the utility for heating purposes. Method according to one of the preceding claims, characterized in that the electric energy heats a heating element through which a liquid heat transfer medium flows. Method according to one of the preceding claims, characterized in that the heating element is a water heater. Method according to one of the preceding claims, characterized in that the electrical energy replaces, at least in part, the energy carriers conventionally used for heating purposes, such as gas or oil, in whole or in part. System for effective energy utilization, comprising a control module (3) and an electric heating element (5) arranged in a heating system (4) with flow (4a) and return (4b) and through which a liquid heat carrier (6) flows. , System after Claim 7 , characterized in that the heating element (5) is a water heater. System after Claim 7 , characterized in that the control module (3) from the electric power supplier (2) is remote controlled. System after Claim 9 , characterized in that the remote control via radio or Internet or the conventional power supply line of the electric power supplier (2).

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