WO2012172116A1

WO2012172116A1 - Lawn heating distributor, lawn heating system and method for heating a lawn

Info

Publication number: WO2012172116A1
Application number: PCT/EP2012/061616
Authority: WO
Inventors: Helmut Klatt
Original assignee: Geotemp Projektgesellschaft Gmbh & Co. Kg
Priority date: 2011-06-16
Filing date: 2012-06-18
Publication date: 2012-12-20
Also published as: DE102011077650A1

Abstract

The invention relates to a lawn heating distributor (100), comprising a housing (90) in which a first, second and third valve assembly (10, 20, 30) and a control device (99) being in control connection with the first, second and third valve assemblies (10, 20, 30) are arranged, wherein the first, second and third valve assemblies (10, 20, 30) are connected in a conduction loop (80) for a liquid heat transfer medium (800), wherein a solar thermal circuit connection (40) branches off the first valve assembly, a geothermal circuit connection (50) branches off the second valve assembly (20), and a lawn heating circuit connection (60) branches off the third valve assembly (30), and wherein the control device (99) is designed to switch the first, second and third valve assembly (10, 20, 30) in accordance with a season-specific operating mode to form a season-specific circuit.

Description

Lawn heating distributor, lawn heating system and method for heating a lawn

Technical area

The invention relates to a turf heater manifold, a turf heater and a method for heating a turf.

State of the art

Lawn heaters are used, for example, in non-covered lawn sports facilities, such as football, hockey, tennis or golf courses and allow year-round game operation. A turf heater has proven to be particularly required for the year-round operation of football fields. According to a decision of the German Football Association with effect for the season 2007/2008 all stadiums 10 of the first and second Bundesliga must have a turf heating.

Prior art turf heaters use mostly conventional energy sources such as oil, gas or district heating. The energy costs of such turf heaters are relatively high and due to these high costs comes at best a temporary operation, usually immediately before and after a use of the lawn in question. This in turn has the disadvantage that the lawn is damaged, which is not uncommon Lawn change required. This has serious cost and planning disadvantages for the operation of football fields.

Even previously known building concepts using regenerative energy sources for heating buildings are initially not suitable for use in a lawn heating to remedy the aforementioned disadvantages. Building concepts include the use of heat pumps to reduce the low temperature level, which is not sufficient for heating buildings. B. a geothermal source to raise. Such a concept with a heat pump, which is designed for the combination of one or more heat sources, including solar and geothermal, is known for example from DE 20 2009 007 774 U1. Building heating systems of the aforementioned type have u. a. also with regard to the use for heating of open spaces the disadvantage that they are complex and maintenance-intensive due to the required heat pumps. On the other hand, their operation is cost-intensive due to the electrical supply energy required for the heat pumps, so that these building concepts are already basically not suitable to be used for a turf heating. So far, there is for the year-round operation of a football lawn only the above-described solution of a temporary heating operation with the known consequences of a more frequent need to replace the lawn.

Presentation of the invention

Starting from DE 20 2009 007 774 U1, it is an object of the present invention to provide a turf heating distributor, a turf heating system and a method for heating a turf, with which an improved, in particular simple and environmentally friendly heating of a turf is possible. In particular, a heating of a lawn should be possible in such a way that the necessity of exchanging the lawn is avoided. With regard to the turf heater manifold, the object is achieved by a turf heater manifold according to the invention of claim 1 and a system distributor of claim 19. With regard to the turf heating system, the object is achieved by a turf heating system according to the invention of claim 20. With regard to the method for heating a lawn, the object is achieved by a method according to the invention of claim 28. The method for heating a lawn by means of a turf heater, a solar thermal source and a geothermal source is preferably carried out by means of a turf heater according to one of claims 1 to 18 and / or a system distributor according to claim 19, and / or by means of a turf heating system according to one of the claims - from 20 to 27.

The system manifold provides a lawn heater manifold according to the concept of the invention and a booster manifold. According to the invention, the additional heating distributor has a further, preferably a fifth, valve arrangement, from which a supplementary heating connection and an auxiliary lawn heating connection branches off. Preferably, the auxiliary heater manifold is operated uncoupled from the turf heater manifold, in particular without exchange of heat transfer medium between the turf heater manifold and the auxiliary heater manifold. This preferably allows independently the implementation of the geo-thermal concept in addition to a conventional heating system.

Basically, a valve arrangement means any regulating device for a liquid. In particular, the control element may be selected from the group consisting of: valve, in particular three-way valve, throttle, flap.

In particular, the valve arrangement associated with the one circulation connection is a valve arrangement which opens the line ring to the one circulation connection, d. H. one that can open the conduit ring to the one circuit port. In particular, in addition or as an alternative, the valve arrangement assigned to the other circuit connection is a valve arrangement which opens the line ring to the other circuit connection, ie. H. one that can open the conduit ring to the other circuit connection.

The invention is based on the consideration that the minimum required by a turf plant for year-round growth temperature level of 13 ° C is very close to the temperature level of a, in particular near-surface, geothermal source. A preferred source of geothermal energy, in particular with a depth of at least 200 m up to 400 m, provides 15 ° C up to 20 ° C. The invention has recognized that a solar thermal source is best suited to supplement a geothermal source to form a preferably sealed source system. A solar thermal source is particularly suitable for supplying higher temperatures above those of the geothermal source, preferably for feeding higher temperatures above 50 ° C or 70 ° C. The invention has recognized that, in particular with the aforementioned interpretations, at least one flow temperature in the lawn area of the turf heating between 15 ° C and 20 ° C is possible, so that the conditions for year-round growth of the turf plant can be guaranteed regardless of the season. The invention has further recognized that in the said comparatively small temperature difference, an inventive, comparatively simply laid out lawn heating distributor with a line ring is sufficient to meet the needs of a turf heating, in combination with the aforementioned source system. In particular, a turf heater manifold is provided with, preferably only, two source ports (namely, a solar thermal circuit port and a geothermal circuit port) and a heater port (namely, a turf heater circuit port). In particular, the concept basically works without a mixer and / or without a heat exchanger in order to be able to actuate a turf heating at the third connection.

As a result, by means of the control device according to the concept of the invention, a virtually year-round operation of a turf heating system is made possible both economically and reliably. The cost savings result from the exclusive integration of renewable energy sources - namely a geothermal source and a solar thermal source - in a manner adapted to the turf heating according to the concept of the invention. The lawn is exposed to significantly less strain, so that a lawn change can be substantially ruled out or can be avoided. This requires a further cost reduction and planning security for the game operation on a lawn. In particular, the present concept creates incentives for football clubs and operators of other non-covered grass sports facilities, which for reasons of cost so far have no turf heating, since they can now count on a cost-saving year-round operation with a rapid amortization of investments for a turf heating system. Advantageous developments of the invention can be found in the dependent claims and specify in particular advantageous ways to realize the above-described concept within the scope of the problem and with regard to further advantages.

The specific operating mode is preferably a season-specific operating mode to which a specific cycle in the form of a season-specific cycle is assigned. For example, the specific mode of operation may be based on a quay currently be discontinued. A season-specific setting or a calendar setting can be implemented in particular by means of an operating mode set on a monthly and / or weekly basis and / or on a daily basis. Additionally or alternatively, the specific operating mode may be set according to one or more limit temperatures measured by a temperature sensor, e.g. For example, an ambient temperature sensor, a bottom temperature sensor and / or a collector temperature sensor may be provided. Preferably, an ambient temperature, in particular the air, and a bottom temperature, in particular the air at the bottom or in the ground, used to establish a suitable scenario of limit temperatures.

In particular, a first limit temperature may be in the form of an ambient temperature in the range between 18 ° C and 22 ° C, preferably centered at 20 ° C and a suitable variance width or measurement uncertainty. In particular, additionally or alternatively, a second limit temperature in the form of a bottom temperature in the range of 0 ° C and 4 ° C, in particular in the range of 2 ° C and a suitable variance width or measurement uncertainty centered around it. The limit temperatures and / or a specific operating mode to be used in each case can be designed on the basis of a history of climatic and / or geological data.

In the context of a particularly preferred structural development, the solar thermal circuit connection, the geothermal circuit connection and the turf heating circulation connection each have a supply and a return. The turf heater manifold includes a number of temperature sensors, with each tiller and each return uniquely associated with a temperature sensor for detecting a temperature of the liquid heat transfer medium in the respective supply and return, respectively. It is advantageous that a particularly accurate and low-inertia control of the first, second and third valve arrangement according to season-specific operating modes is possible by detecting the respective flow and return temperatures.

To be particularly advantageous for use in large-scale turf heating systems, the control device of the turf heating distributor may have a data reception module for detecting temperature values of one or more temperature sensors arranged outside the turf heating distributor. Especially For example, the data receiving module may be configured to read out the temperature of an ambient temperature sensor, the temperature of a soil temperature sensor associated with a turf heater, and / or the temperature of a collector temperature sensor. A reading outside of the turf heater manifold arranged temperature sensors can be wireless or wired.

In a further refinement variant, the control device of the turf heating distributor is designed to determine a season-specific operating mode on the basis of the temperature values detected by the temperature sensors. In the determination of the season-specific operation mode, the temperature values read out from an ambient temperature sensor, a floor temperature sensor, and a collector temperature sensor via a data reception module of the turf heater manifold are included. It is advantageous that such a particularly fast learning of the control device of the turf heater manifold on the conditions of a turf heating system is possible.

In order to enable a particularly energy-efficient operation of a turf heating distributor in a turf heating system, the control unit may be designed to determine a season-specific operating mode on the basis of current and / or historical climatic data. In particular, the determination of a season-specific operating mode can be based on geological data, in particular a thermal response test.

In a particularly preferred structural development, the Rasenheizungs- distributor has exactly three valve arrangements. Advantageously, such a lawn heating distributor is particularly simple. This realizes the concept of the invention in a particularly consistent manner.

In order to design the structure of the turf heater manifold in a further advantageous manner according to the concept, the first, second and third valve arrangement in another constructive development is formed in each case from two control valves arranged in pairs. A control valve may simultaneously be part of the first valve arrangement and the third valve arrangement, whereby the serviceability of the turf heater manifold is further increased. A valve arrangement may alternatively be formed from a control valve. In a further variant of the turf heating distributor, the liquid heat transfer medium can be led to exactly one of the other circulation connections. The guide is via exactly one of the exactly another circuit connection associated valve assembly. This precisely one associated valve arrangement opens the line ring to exactly one of the other circuit connections. A liquid heat transfer medium which enters the line ring via one of the circuit connections-for example, the solar thermal circuit connection-and a valve arrangement which opens the line ring to the one circulation connection via this circuit connection can be from precisely one of the other circuit connections-for example geothermal energy -Kreislaufanschluss - over exactly this one exactly another circuit connection associated, the line ring to this exactly another circuit connection opening valve arrangement emerge. The advantage here is that a particularly fast and low-flow reloading the liquid heat transfer medium is possible. This further variant forms in particular the summer operating mode, the first autumn / spring operating mode or the second winter operating mode and the first winter operating mode, in which two circuit connections, ie one and exactly the other, are fluid-connected.

In a further variant of the turf heating distributor, the liquid heat transfer medium can be led to exactly two of the other circuit connections. In this case, the exactly two other circuit connections are assigned in each case exactly one other valve arrangement which opens the line ring to the respective circuit connection and through which the liquid heat transfer medium can be guided to the respective one of exactly two other circuit connections. A liquid heat transfer medium which enters the line ring via one of the circuit connections and via a valve connection which is assigned to the one circuit connection and opens the line ring to the one circuit connection can escape from exactly two of the other circuit connections. It is advantageous that a particularly flexible temperature control of a lawn heater to be connected to the lawn heating circuit connection can be achieved by the fluid connection of three circuit connections. This further variant forms in particular the second autumn / spring mode of operation, in which a first circuit connection - for example the solar thermal circuit connection - with exactly two other circulation connections - for example the grass heater connection and the geothermal connection - are fluid-connected. In a particularly preferred constructional development, a liquid heat transfer medium can be stored in the line ring of the turf heating distributor in a memory-free manner. A memory-free means that a liquid heat transfer medium entering the line ring via a first circuit connection can emerge from the line ring directly via a second circuit connection as soon as it is released by the valve arrangement assigned to this second circuit connection. The first and second circulation connections are accordingly fluid-connected. The duct ring and duct system of the turf heater manifold are free from a heat exchanger. In particular, storage freedom is not to be understood as meaning that the conduit ring has no expansion vessel. An advantage of this constructive development is that a storage and conversion losses are avoided. For example, referring to a second summer mode of operation, a solar thermal circuit connection and a geothermal connection are fluidly connected via the conduit ring. A liquid heat transfer medium entering the line ring via a first circuit connection, for example the solar thermal circuit connection, can exit the line ring directly via a second circuit connection, for example the geothermal circuit connection. The liquid heat transfer medium passes through a heat exchanger, a heat pump or a storage tank. In a particularly advantageous constructive development of the turf heater manifold is free of a heat pump. This also contributes to the simple construction of the turf heater manifold.

In particular, the liquid heat transfer medium can be guided without mixing. Non-mixed in this context means that the control valves included in the turf heater manifold are operated such that each of the control valves has exactly one active valve inlet and one active valve outlet at any one time, which means that the liquid heat transfer medium flows through a respective valve inlet or outlet flows through. This leads to a particularly simple construction of the turf heater manifold.

Two circulating pumps can be arranged in the duct system of the turf heating distributor. A first circulation pump may be arranged between the first valve arrangement and the second valve arrangement. The second circulating pump may be arranged between the third valve arrangement and one of the circulation connections. By integrating the circulation pumps in the turf heater manifold can advantageously weather influences on the circulating pumps are excluded. A circulation pump is the only major power consumer of the turf heater or turf heater. In a particularly preferred embodiment of the concept of the invention, the turf heater provides for the ducting of the turf heater manifold, the solar thermal source, the geothermal source and the turf heater to be one and the same having liquid heat transfer medium. Independently, a fourth valve arrangement may be connected in the conduit for a liquid heat transfer medium. This may preferably be connected to another source of thermal energy; in particular with one and the same liquid heat transfer medium as in the conduit ring. It may alternatively connect the fourth valve assembly on the pipe ring to a heat exchanger. In particular, a lawn heating manifold can thus be operated in a primary circuit with the involvement of the line ring with a first liquid heat transfer medium. Additionally or alternatively, via the fourth valve arrangement of the line ring, a said heat exchanger can be operated by coupling a secondary circuit with a second liquid heat transfer medium in a thermic source, in particular a surface thermic source.

There are preferably four seasonal circuits switchable. In a first seasonal cycle, the solar thermal geothermal cycle, only the solar thermal source and the geothermal source are fluidly connected via the conduit ring. In a second seasonal cycle, the solar thermal lawn heating circuit, only the solar thermal source and the turf heater are fluidly connected via the conduit ring. In a third seasonal cycle, the solar thermal geothermal turf heating circuit, the solar thermal source, the geothermal source and the turf heater are fluidly connected via the conduit ring. In a fourth seasonal cycle, the geothermal turf heating cycle, only the geothermal source and the turf heater are fluidly connected via the conduit ring. Of the four season-specific circuits, only one is activated at a time by the control device. It is advantageous that by means of a technically quite simple type of interconnection, the year-round operation of a lawn heating system is shown. In order to allow a particularly reliable operation of the turf heating system over a wide temperature range, the liquid heat transfer medium is glycol-containing in a preferred embodiment. It is also possible to use another liquid heat transfer medium suitable for this purpose, such as a salt-based heat transfer medium.

The geothermal source of the turf heater may be developed as a surface geothermal probe that provides a temperature of the liquid heat transfer medium between 15 ° C and 20 ° C. On the one hand, it is advantageous that a temperature level above that of a lawn heating system can be tapped by means of a surface geothermal probe. On the other hand, it is advantageous that a surface geothermal probe allows a geothermal source to be compactly developed. In particular, the geothermal source may be formed from one or more geothermal probes, each having a depth of between 250 to 400 meters.

Advantageously, the solar thermal source can be designed as a solar collector. A solar collector offers a technically mature possibility for developing a solar thermal energy source. The solar collector can provide a temperature of the liquid heat transfer medium of up to 100 ° C.

In particular, the turf heating system may include an ambient temperature sensor, a bottom temperature sensor, and / or a collector temperature sensor. The sensors may each have their own or a common data transmission module which sends the temperature values of these sensors to the data reception module of the control unit of the turf heater distributor. It is advantageous that the temperature sensors are flexibly placeable according to the circumstances of the lawn to be heated.

The area of the lawn heating can be between 4000 m ² and 1 1000 m ² , in particular between 7000 m ² and 8000 m ² . A typical foot lawn has a lawn area between 7000 m ² and 8000 m ² . In particular, the turf heating may be designed for heating a football pitch.

In a particularly preferred development of the concept of the invention, the method for heating a lawn provides a summer operating mode with the following steps: Controlled supply of an amount of heat from the solar thermal source to the geothermal source by means of the liquid heat transfer medium,

Controlled recycling of the liquid heat transfer medium from the geothermal source back to the solar thermal source.

By means of the summer mode of operation depicted in these method steps, it is advantageously possible to transfer a quantity of heat from the solar thermal source into the geothermal source in the manner of a geothermal pendulum store. Since summer heating of the lawn is not required, an amount of heat generated by the solar thermal source can be stored so for another season, especially the winter. The amount of heat stored or stored in summer mode of operation is at least as high as the amount of heat that is retrieved in a winter operation for heating the lawn. A determination of the required amount of heat is based on historical and / or forecast climate data. The required amount of heat is determined with a safety factor to compensate for unforeseen climatic variations. The concept of the invention enables a needs-based design of the turf heating system, so that an additional heating or other emergency or additional heat source is unnecessary.

The method may include a first fall / spring mode of operation and a second winter mode of operation, respectively, with the method steps:

Controlled supply of a quantity of heat from the solar thermal source to the lawn heating by means of the liquid heat transfer medium,

Controlled recycling of the liquid heat transfer medium from the turf heater back to the solar thermal source. In these modes of operation, immediate heating of the lawn by the solar thermal source is shown. Advantageously, the required pumping capacity of the turf heater manifold can be reduced.

In particular, the method has a second fall spring mode of operation, with the method steps: Controlled supply of an amount of heat from the solar thermal source to the geothermal source by means of the liquid heat transfer medium,

Controlled supply of a quantity of heat from the geothermal source to the lawn heating by means of the liquid heat transfer medium,

Controlled recycling of the liquid heat transfer medium from the turf heater back to the solar thermal source. It is advantageous that, at the same time as the heating of the lawn, storage of a quantity of heat not required for heating the lawn is possible.

The method may have a first winter operating mode, with the method steps:

Controlled supply of a quantity of heat from a geothermal source to the turf heating by means of the liquid heat transfer medium,

Controlled recycling of the liquid heat transfer medium from the lawn heater back to the geothermal source.

It will be appreciated that in this mode of operation, a quantity of heat may be accessed from the geothermal source that has been stored during a different season-specific mode of operation.

In particular, the determination of the respective operating mode to be used can be based on current and / or historical climatic and geological data. A lawn can be heated in this way particularly energy efficient. In the summer mode of operation is the solar thermal geothermal circuit, in the first autumn / spring mode of operation or the second winter mode of operation is the solar thermal turf heating cycle, in the second autumn spring mode of operation is the solar thermal geothermal turf heating circuit and at the first winter switched mode of operation of geothermal lawn heating circuit. embodiments

Embodiments of the invention will now be described below with reference to the drawing. This is not necessarily to scale the embodiments, but the drawing, where appropriate for explanation, executed in a schematized and / or slightly distorted form. With regard to additions to the teachings directly recognizable from the drawing reference is made to the relevant prior art. It should be noted that various modifications and changes may be made in the form and detail of an embodiment without departing from the general idea of the invention. The general idea of the invention is not limited to the exact form or detail of the preferred embodiment shown and described below or limited to an article which would be limited in comparison to the subject matter claimed in the claims. For the given design ranges, values within the stated limits should also be disclosed as limit values and be arbitrarily usable and claimable. For simplicity, the same reference numerals are used below for identical or similar parts or parts with identical or similar function. Further advantages, features and details of the invention will become apparent from the following description of the preferred embodiments and from the drawing; this shows in:

Fig. 1 is a schematic representation of a preferred embodiment of a lawn heating system;

Fig. 2 is a schematic representation of a preferred embodiment of a turf heater manifold for a turf heater system of Fig. 1; Fig. 3 is a schematic representation of a preferred embodiment of a method for heating a lawn, which is carried out with a turf heating system of Fig. 1;

4 shows a schematic illustration of a further preferred embodiment of a turf heating distributor, namely with a further thermic circuit connection for the connection of a further thermic source-presently a surface thermistor Source via a heat exchanger for an extension of the turf heating system of Figure 1, for example according to FIG. 5.

Fig. 5 is a schematic representation of another preferred embodiment of a turf heating system, which is formed as a system with a conventional turf heater, wherein the turf heater - is preferably formed as shown in FIG. 2 or in the extension of FIG. 4-, with an auxiliary heating distributor for education to be supplemented by a system distributor; Fig. 6 is a schematic representation of a preferred embodiment of a system distributor for a turf heating system of Fig. 5, namely with a first embodiment of a turf heater manifold of Fig. 2 and with a booster manifold. A turf heater 1000 in FIG. 1 includes a turf heater manifold 100, a solar thermal source 400 formed as a solar collector, a geothermal source 500, a turf heater 600, an ambient temperature sensor 250, a collector temperature sensor 450, and a bottom temperature sensor 650.

The designed as a solar collector solar thermal source 400 is spatially separated from the at least one turf heater 600. The designed as a solar collector solar thermal source 400 surface is not overlapping to the at least one turf heater 600 is arranged.

The turf heater manifold includes a solar thermal circuit connection 40 with a solar thermal flow 41 and a solar thermal return 42, a geothermal circuit connection 50 with a geothermal flow 51 and a geothermal return 52, and a turf heating cycle connection 60 with a turf heating flow 61 and a turf heater return 62.

On the one hand, the solar thermal flow 41 with the solar thermal feed line 410, the geothermal feed 51 with the geothermal feed line 510 and the Rasenheiz- Vorlauf 61 fluidly connected to the grass heater supply line 610. On the other hand, the solar thermal return line 420 with the solar thermal return 42 are fluid-connected, the geothermal return line 520 with the geothermal return 52, and the turf heater return line 620 with the turf heater return 62.

The turf heater manifold 100, the solar thermal source 400 formed as a solar collector, the geothermal source 500 tapped as the surface geothermal probe, and the turf heater 600 are flowed through by one and the same liquid and heat transfer medium 800. The liquid heat transfer medium 800 is glycol-containing. The ambient temperature sensor 250 detects an ambient temperature T250, the floor temperature sensor 650 disposed 20 cm below the ground level 690, a floor temperature T650, and the collector temperature sensor 450 directly attached to the solar panel 450, a solar temperature T450. Each of the sensors 250, 450, 60 is provided with a wireless data transmission module (not shown) which sends the respective temperature values T250, T650, T450 to the data receiving module of the controller 99 (shown in FIG. 2).

FIG. 2 shows the turf heater manifold 100 already introduced with reference to FIG.

The turf heater manifold 100 includes a housing 90 in which a first valve assembly, a second valve assembly 20, and a third valve assembly 30 are disposed. The first valve assembly 10 is formed of the paired control valves 1 1 and 12, the second valve assembly 20 of the paired control valves 13 and 14 and the third valve assembly 30 from the paired control valves 1 1 and 15 are formed. The control valve 1 1 is also part of the first valve assembly 10 and the third valve assembly 30th

The first valve assembly 10, the second valve assembly 20, and the third valve assembly 30 are connected in a liquid heat transfer medium conduit ring 80. Accordingly, the control valves 1 1, 12, 13, 14, 15 are connected annularly in the line ring 80.

From the first valve arrangement 10, a solar thermal circuit connection 40 assigned to the first valve arrangement 10 branches, from the second valve arrangement 20 a geothermal circulation connection 50 assigned to the second valve arrangement 20 and from the first valve arrangement 10 Third valve assembly 30 from the third valve assembly 30 associated lawn heating circuit connection 60 from. The first valve assembly 10 opens the conduit ring 80 to the solar thermal circuit port 40, a second valve assembly 20 opens the conduit ring 80 to the geothermal circuit port 50, and a third valve assembly 30 opens the conduit ring 80 to the lawn heating circuit port 60.

The first, second and third circuit connection 40, 50, 60 each have a flow 41, 51, 61 and a return 42, 52, 62. The control valve 1 1 opens the line ring 80 to the flow 41 of the solar thermal circuit connection 40 and to the return 62 of the turf heater circulation connection 60, the control valve 12 opens the line ring 80 to the return line 42 of the solar thermal circuit connection 40, the control valve 13 opens the Conduit 80 to the feed 51 of the geothermal circuit port 50, the control valve 14 opens the conduit ring 80 to the return 52 of the geothermal circuit port 50, and the control valve 15 opens the conduit ring 80 to the lead 61 of the turf heater circuit port 60th

The turf heating distributor 100 has a first circulating pump 81, which is connected in the line ring 80 between the control valve 12 and the control valve 13. A second circulating pump 82 is connected between the control valve 15 and the flow 61 of the Rasenheiz- circulation connection 60. In order to ensure a pressure equalization in the line ring 80 branches from the line ring 80 from an expansion vessel 85. It can also -am-line ring or on a pipe socket, in particular on the grass heating manifold 100, 200 and / or on the additional heating manifold 300- not shown here ventilator may be provided, if necessary. Work automatically. Also, pressure gauges can be provided which provide a pressure value by means of which a venting or other pressure relief can take place. In the present case, a flow meter 89 measures the volume flow V of the liquid heat transfer medium 800. The illustrated lawn heating distributor 100 is storage-free and free from mixed mixtures and free of heat exchangers. The turf heating distributor 100 comprises temperature sensors 43, 44, 53, 54, 63, 64. The temperature sensor 43 is the flow 41, the temperature sensor 44 the return 44, the temperature sensor 53 the flow 51, the temperature sensor 54 the return 42, the temperature sensor 63 the Lead 61 and the temperature sensor 64 the return 62 uniquely assigned. The temperature sensors 43, 44, 53, 54, 63, 64 detect a respective temperature of the liquid heat transfer medium 800, T43, T44, T53, T54, T63, T64 in the respective flow 41, 51, 61 and return 42, 52, 62nd , The control valves 1 1, 12, 13, 14, 15 are connected to a control device 99 via a number of control lines 98 generally designated 98. The control device 99 is furthermore designed to determine the temperature values T43, T44, T53, T54, T63, T64 of the temperature sensors 43, 44, 53, 54, 63, 64, as well as the temperature values T250, T450 and T650 of that described with reference to FIG Ambient temperature sensor 250, the collector temperature sensor 450 and the bottom temperature sensor 650 read. The control device 99 is equipped with a data receiving module, not shown, in order to read out the temperature values T250, T450 and T650 in any case wirelessly, since the ambient temperature sensor 250, the collector temperature sensor 450 and the bottom temperature sensor 650 are present outside of the housing 90. For reading out the other temperature values, a number of sensor lines (not shown) are connected to the temperature sensors 43, 44, 53, 54, 63, 64 and the control device 99.

The following describes the switchable seasons specific cycles through the turf heater manifold. The switching position of the control valves 1 1, 12, 13, 14, 15 required for the switching of the respective seasonal cycle is shown in the following table.

As shown in Fig. 2, each of the control valves 1 1, 12, 13, 14, 15 switching marks 1, 2, 3 and 4 are assigned. Furthermore, each of the control valves 1 1, 12, 13, 14, 15 a Reference arrow 9. The reference arrow 9 is fixed in relation to the movable (switching end) part of the respective control valve 1 1, 12, 13, 14, 15 defined. The switching positions given in the table correspond to the respective arrow position of the control valve on the indexing mark.

An example: The control valve 12 shown in Fig. 2 is in the switching position 2 - the fixed reference arrow points to the switching mark 2. Accordingly, the line ring 80 to the return line 42 of the solar thermal circuit connection 40 is opened. The liquid heat transfer medium 800 flowing in via the return 42 can only leave the control valve 12 in the switching position 2 at the switching mark 3 of the control valve 12. A flow short circuit to the flow 41 of the solar thermal circulation connection 40 is prevented because a valve access is blocked by the switching mark 4 of the control valve 12. The liquid heat transfer medium 800 inevitably flows to the control valve 13. The control valve 13 in turn is shown in Fig. 2 in switch position 1.

The switching positions of the control valves 1 1, 12, 13, 14 and ^ shown in Fig. 2 correspond to the solar thermal geothermal turf heating cycle. The turf heater manifold of Fig. 2 is thus switched according to the second fall / spring mode of operation. Thus, the solar thermal source 400 shown in FIG. 1, the geothermal source 500, and the turf heater 600 are fluidly coupled via the conduit ring 80.

When the solar thermal geothermal lawn heating circuit is switched, which corresponds to operation of the turf heater manifold 100 in the second fall spring mode of operation, a liquid heat transfer medium 800 coming from the solar thermal source 400 flows across the return 42 of the solar thermal circuit port 40 and the open to the line ring 80 and return 42 control valve 12 in the line ring 80 a. The liquid heat transfer medium 800 continues to flow through the flow meter 89 and the first circulation pump 81 in the direction of the control valve 15 13. The control valve 13 is open to the line ring 80 and the flow 51 of the geothermal circulation connection 50. The liquid heat transfer medium 800 therefore flows through the control valve 13 and the lead 51 of the geothermal circuit port 50 to the geothermal source 500. Coming from the geothermal source 500, the liquid heat transfer medium 800 flows across the return 20 54 of the geothermal circuit port 50 and the open to the line ring 80 and the return 54 control valve 14 in the line ring 80 a. The liquid heat Transmission medium 800 continues to flow to the control valve 15. The control valve 15 is open to the flow 61 of the turf heater circuit connection 60 and the line ring 80, the direct flow to the control valve 1 1 is closed, however. The liquid heat transfer medium 100 flows out of the line ring 80 via the control valve 15, through the second circulation pump 82 via the lead 61 of the turf heater 600. Coming from the turf heater 600, the liquid heat transfer medium flows into the return 62 and via the control valve 1 1 directly to the flow 41 of the solar thermal circuit connection 40 and solar thermal source 400, the cycle begins again. The control valve 11 is simultaneously open to the return 62 of the grass heater connection 60 and to the supply line 41 of the solar thermal circuit connection 40.

When the solar thermal geothermal circuit is switched, which corresponds to operation of the turf heater manifold 100 in a summer mode of operation, a liquid heat transfer medium 800 coming from the solar thermal source 400 flows across the return 42 of the solar thermal circuit port 40 and the line ring 80 and 5 to the return 42 open control valve 12 in the line ring 80 a. The liquid heat transfer medium 800 continues to flow through the flow meter 89 and the first circulation pump 81 in the direction of the control valve 13. The control valve 13 is open to the line ring 80 and the flow 51 of the geothermal circuit connection 50. The liquid heat transfer medium 800 therefore flows through the control valve 13 and the lead 51 of the geothermal circuit port 50 to the geothermal source 500. Coming from the geothermal source 500, the liquid heat transfer medium 800 flows via the return 54 of the geothermal circuit port 50 and the open to the line ring 80 and return 54 control valve 14 in the line ring 80 a. The liquid heat transfer medium 800 continues to flow to the control valve 15. The control valve 15 is closed to the supply line 61 of the turf heater circulation connection 60. The control valve 1 1 is in turn closed to the return 62 of the Rasenheiz- connection 60, the line ring 80 and the flow 41 of the solar thermal circulation connection 40, however, open. The liquid heat transfer medium 800 therefore flows through the control valve 1 1 to the solar thermal source 400. The cycle 20 starts again.

When the solar thermal turf heating circuit is switched, which corresponds to operation of the turf distribution manifold 100 in the first fall / spring mode of operation or a second winter mode of operation, a liquid heat transfer medium 800 flows, from the solar thermal source 400, via the return 42 of the solar thermal circuit connection 40 and opened to the line ring 80 and the return 42 control valve 12 in the line ring 80 a. The control valves 13 and 14 are open only to the line ring 80 but not to the flow 51 and return 52. The liquid heat transfer medium 800 therefore continues to flow to the control valve 15. The control valve 15 is open to the flow 61 of the turf heater circulation connection 60 and the line ring 80, the direct flow to the control valve 1 1 is closed. The liquid heat transfer medium 100 flows out of the line ring 80 via the control valve 15, through the second circulation pump 82 via the lead 61 of the turf heater 600. Coming from the turf heater 600, the liquid heat transfer medium flows into the return 62 and via the control valve 1 1 directly to the flow 41 of the solar thermal circuit connection 40 and the solar thermal source 400, the cycle starts again. The control valve 1 1 is simultaneously open to the return 62 of the turf heater connection 60 and the flow 41 of the solar thermal circulation connection 40.

When the geothermal turf heater cycle is switched, which corresponds to operation of the turf heater manifold 100 in the first winter operating mode, a liquid heat transfer medium 800 flows through the return 52 of the geothermal circuit port 50 and the control valve 14 opened to the conduit ring 80 and return 52 flows into the conduit ring 80. The liquid heat transfer medium 800 continues to flow to the control valve 15. The control valve 15 is opened to the supply line 61 of the grass heating circulation connection 60 and to the line ring 80. The direct flow to the control valve 1 1 is closed. The liquid heat transfer medium 100 flows out of the line ring 80 via the control valve 15, through the second circulation pump 82 via the lead 61 of the turf heater 600. Coming from the turf heater 600, the liquid heat transfer medium flows into the return 62. The control valve 1 1 is open to the return 62 of the turf heater connection 60 and the line ring in the direction of the switching mark 2, to the flow 41 of the solar thermal circuit connection 40, however, closed. The control valve 14 is also closed to the return 42 of the solar thermal circuit connection 40, but opened to the line ring 80 in the direction of the switching marks 4 and 3 of the control valve 14. The liquid heat transfer medium 800 continues to flow through the flow meter 89 and the first circulation pump 81 in the direction of the control valve 13. The control valve 13 is open to the line ring 80 and the flow 51 of the geothermal circulation connection 50. The liquid heat transfer medium 800 flows therefore through the control valve 13 and the flow 51 of the geothermal circuit connection 50 to the geothermal source 500. The cycle starts again.

The control device 99 is designed to determine four season-specific operating modes, of which only one is actively switched at a time, using current and / or historical climatic and geological data. Specifically, the controller 99 determines the four season-specific operation modes based on the temperature values T43, T44, T53, T54, T63, T64 detected by the temperature sensors 43, 44, 53, 54, 63, 64, and the ambient temperature sensor 250, the floor temperature sensor 650, and the like Collector temperature sensor 450 read temperature values T250, T650, T450.

The determination of the season-specific operating modes and the corresponding switching of the control valves will be explained with reference to the method for heating a lawn schematically shown in FIG. The method described is implemented in the control device 99 of the turf heating distributor, for example as a computer program product with a flowchart according to FIG. 3.

For the turf heater 600, a minimum flow temperature T63 of the liquid heat transfer medium 800 of 13 ° C and a maximum return temperature T64 of 19 ° C are determined, i. H. It should be a turf temperature between 13 ° C and 19 ° C can be achieved. The geothermal source 500 is developed as a surface geothermal probe with a depth of 400 m and has a temperature of 15 ° C to 20 ° C in the uncharged state. This temperature can be measured via the temperature sensor T54.

A method 900 for heating a lawn in FIG. 3 begins with an initialization step 901. This is followed by a method step for determining the seasons-specific operating mode 950. Within method step 950, 5 15 queries are made.

In the query step 951, it is first checked whether an active circuit of the turf heater 600 is even required. If the temperature T250 of the ambient temperature sensor 250 is greater than 19 ° C, an active circuit of the turf heater 600 is not required. In this case, polling step 951 is affirmative and polling step 952 follows. In the inquiry step 952, it is checked whether the temperature T 450 of the collector temperature sensor 450 exceeds the return temperature T 54 of the liquid heat transfer medium. Medium 800 is located. If the query step 952 is negative, the query step 951 is returned to. If query step 952 returns a positive result, summer mode 910 is activated. In a subsequent control step 91 1, the controller 99 controls the control valves 1 1, 12, 13, 14, and 15 according to the "summer mode" of the above table A quantity of heat is transported from the solar thermal source 400 to the geothermal source 500 via the liquid heat transfer medium 800, and the liquid heat transfer medium 800 is then returned from the geothermal source 500 back to the solar thermal source 400 In the case of summer operation, since the lawn is not heated, the total amount of heat provided by the solar thermal source 400 can be stored in the geothermal source 500. The dimensioning of the geothermal energy can be stored in the geothermal energy source 500. Source 500 and thus the geothermal Pendelsp eichers takes place as part of a geological survey. Subsequently, after a waiting time taking into account the thermal inertia of the turf heater 600, the process returns to the inquiry step 951.

If the query step 951 is answered in the negative, i. H. T250 <19 ° C, active activation of the turf heater 600 may be required. This is checked in a query step 953. If the temperature T650 detected by the floor temperature sensor 650 is above 14 ° C, active heating of the turf heater is not required. In this case, jump back to query step 951. At a temperature T650 <14 ° C, however, an active circuit of the lawn heating is required, there is a need for heating energy in the lawn.

In the transitional period, ie in spring or autumn, the solar thermal source constructed as a solar collector may already provide an amount of heat which may lead to a heating of the liquid heat transfer medium 800 above 22 ° C. A temperature of over 22 ° C is already too high for direct operation in a lawn heater 600. A query step 954 checks the temperature T450 of the collector temperature sensor 450 against the temperature threshold of 22 ° C. If this check is positive, the second fall / spring mode 920 is activated. In a subsequent control step 921, the controller 99 controls the control valves 1 1, 12, 13, 14, and 15 according to the "second fall spring mode" of the above table, now the solar thermal source 400, the geothermal source 500, and the turf heater 600 above the conduit ring 80 fluidly connected to each other. A quantity of heat from the solar thermal source 400 is supplied to the geothermal source 500 via the liquid heat transfer medium 800. A portion of the amount of heat is stored in the geothermal pendulum storage acting geothermal source 500. Now, a smaller amount of heat from the geothermal source 500 is delivered to the turf heater 600 via the now cooled liquid heat transfer medium 800. Subsequently, the liquid heat transfer medium 800 is led from the turf heater 600 back to the solar thermal source 400. Subsequently, after a waiting time taking into account the thermal inertia of the turf heater 600, the query step 951 is skipped back.

Up to a temperature of 22 ° C. measured by the collector temperature sensor 450, a cooling of the liquid heat transfer medium 800 to a turf-compatible level of 19 ° C. is achieved by the passage of the liquid heat transfer medium 800 through the solar thermal return line 420 and the lawn heating system. Supply line 610 guaranteed.

If the query step is answered in the negative, i. H. If the temperature T450 of the collector temperature sensor 450 is smaller than 22 ° C, the polling step 955 follows. In the polling step 955, it is checked whether the temperature T450 of the collector temperature sensor 450 is greater than 17 ° C. If so, the first fall / spring mode of operation or the second mode of winter mode 930 is activated. In a subsequent control step 931, the controller 99 controls the control valves 1 1, 12, 13, 14, and 15 according to the "first fall / spring mode" in the above table, and now only the solar thermal source 400 and the turf heater 600 A quantity of heat from the solar thermal source 400 is conducted to the turf heater 600 by means of the liquid heat transfer medium 800, then the liquid heat transfer medium 800 is led from the turf heater 600 back to the solar thermal source 400. Subsequently, after one of the thermal inertia of the turf heater 600 considering waiting time, is returned to query step 951.

If the polling step is denied, ie, the temperature T450 of the collector temperature sensor 450 is not greater than 17 ° C, the first winter operating mode 940 is activated. In a subsequent control step 941, the control device 99 controls the control valves 11, 12, 13, 14 and 15 in accordance with the "first winter operating mode" of FIG above table. Now, only the geothermal source 500 and the turf heater 600 25 are fluidly connected via the conduit ring 80. A quantity of heat from a geothermal source 500, in particular a quantity of heat stored in summer operation, is fed to the turf heater 600 by means of the liquid heat transfer medium 800. Subsequently, the liquid heat transfer medium 800 is led from the turf heater 600 back to the geothermal source 500. Subsequently, after a waiting time taking into account the thermal inertia of the turf heater 600, the process returns to the inquiry step 951. An exact dimensioning of the turf heating system 1000, matching the column height of the surface geothermal probe to the solar collector surface, is based on a geological report regarding the storage capacity of the soil surrounding the surface geothermal probe. For the above embodiments, the following assumptions of a design example were made:

Grass area to be heated, ie area of grass heating, 7500 m ² . Connection power of the turf heater 1 100 kW. Size of solar collector surface 50 m ² . Performance of the solar collector in summer operation 250 W / m ² . Required amount of energy for a year-round turf temperature> 13 ° C 1, 8 MWh. Depth of the geothermal probe 350 m. Specific withdrawal rate / storage capacity of the geothermal probe 200 W / m. Volume related heat capacity of the soil 2MJ (m ³ K).

4 shows, similar to FIG. 2, an extended embodiment of a turf heater manifold 200 in which the same reference numerals as used in relation to FIG. 2 are used for identical or similar parts or parts of identical or similar function. As far as these parts are concerned, reference is made to the description of FIG. In addition, the turf heating distributor 200 of FIG. 4 has a further thermic circulation connection 70. This has a thermic flow 71 and a thermal return 72, which are connected to a heat exchanger 74 and coupled to the previously described line ring 80. The heat exchanger 74 is capable of exchanging an exchange of heat between the heat transfer medium 800 in the conduit ring 80- z. As glycol or a glycol-based or glycol-containing liquid and another heat transfer medium 801 in the thermal circuit connection 70, -. As water or saline water - which is coupled via the thermal circuit connection 70. The connection of the heat exchanger 74 on the side of the heat transfer medium 800 takes place independently thereof similarly as described above via paired control valves 16, 17 of a fourth valve assembly 18. The temperature of the heat transfer medium 800 can be tapped in the heat exchanger 74 via a temperature sensor 73. The heat exchanger is optional; the turf heater manifold 200 may also be implemented without a heat exchanger 74, by directly connecting the thermal flow to the control valve 16 and the thermal return 72 to the control valve 17; ie analogous to the embodiments of the valve assemblies 10, 20, 30th

The turf heater manifold 200 may be used in place of the turf heater manifold 100 in the turf heater 1000, e.g. Closing the thermic flow and return 71, 72 that would be unused in the turf heater manifold 200 in the turf heater 1000

In the expanded form, the turf heating distributor 200 can also be used in the context of a turf heating system 2000 of FIG. 5, which is indicated as a dashed extension of the turf heating system 2000 shown in a solid line. Thus, the turf heater manifold 200 may be used to connect to the further thermal circuit connector, for example, a surface thermic system; So a solar thermal system in the broadest sense. In or directly under asphalt, bitumen, granite or similar highly heat-storing surfaces, eg. B. at the same or comparable surface level (0) as a surface level (0) of a lawn or its top surface 690, for example, a line system with a heat storage medium or heat transfer medium 801 can bring. Thus, for example, a parking lot or other asphalt plant can be made available in the immediate vicinity of the lawn in order there through the asphalt as a heat absorber in sunlight, in the ground directly under the asphalt or heat introduced in the tarmac into the Rasenheizungsverteiler 200 and for use within the lawn heating system 2000 to bring. Accordingly, the turf heater manifold 200 serves to connect another (surface) thermal source 700 via a feed line 710 and a return line 720 under an asphalt surface or in an asphalt surface or under a roof cover or the like heat-storing surface layer 730, ie, a layer for heat storage suitable layer thickness comprising the surface at surface level (0); this is in contrast to a much lower level (-3) of a bottom storage of the geothermal source 500. For the other parts of the turf heating system 2000 reference is made to the description of Fig. 1, wherein in Fig. 5 for identical or similar parts or parts identical or similar function the same reference numerals are used.

Independently of this, the turf heating system 2000 is in the present case designed with a system distributor 101, which is a combination of a turf heating distributor 100 with a supplementary heating distributor 300. Instead of the turf heater manifold 100, the turf heater manifold 200 may also be used in the extension; d. H. with or without attachment of another thermal source 700. The auxiliary heater manifold 300 is a distributor that operates independently of the turf heater manifold 100, 200 that couples an existing conventional heater 750 to a conventional turf heater 760 via the auxiliary heater manifold 300. It turns out that a system distributor 101 with a turf heating distributor 100 or 200, on the one hand, and a supplementary heating distributor 300, on the other hand, is particularly advantageous since, in the case of lawns with an existing heater, this is integrated into a system of turf heaters with a conventional turf heater 760 and a geothermal turf heater 760 Grass heater 600 allows. For this purpose, the additional turf heater 760 has a feed line 770 and a return line 780. The existing conventional heater 750 is also connected to a supply line 770 associated flow line 771 and one of the return line 780 associated return line 781 to the auxiliary heating manifold 300.

The makeup heater manifold 300 is shown in FIG. 6 in accordance with a particularly preferred embodiment in combination with the turf heater manifold 100 to form the preferred manifold 101. The additional heating distributor 300 has corresponding additional connections Z771 and Z781 for the supply and return lines 771, 781 of the auxiliary heater 750. The additional heating distributor 300 also has corresponding to the additional connections Z770 and Z780, for connecting the supply line 770 and return line 780 to the additional turf heater 760. The additional connections Z771, Z770 are coupled via a control valve Z17 of the valve arrangement Z70 or the additional connections Z780, Z781 are over Control valve Z18 of the valve assembly Z70 coupled. With regard to the turf heater manifold 100 (alternatively turf heater manifold 200), reference is made to the description of FIG. 1 (alternatively the description of FIG. 4). Also for the additional heating is a to the flow line Z71 -bzw. additionally or alternatively connected to the flow line Z72 sensor SE available. The manifolds 100, 300 and 200, 300 can be secured to each other at their housing by a flange, plug or screw connection.

LIST OF REFERENCE NUMBERS

switching marks

9 reference arrow

10 first valve arrangement

1 1-15, 16, 17 control valves

18 fourth valve arrangement

20 second valve arrangement

30 third valve arrangement

40 solar thermal circuit connection

41 solar thermal flow

42 Solar thermal return

43, 44 Temperature sensor

T43, T44 temperature values

50 Geothermal circuit connection 51 Geothermal supply

52 Geothermal return

53, 54 Temperature sensor

T53, T54 temperature values

60 turf heating circuit connection 61 turf heating supply

62 turf heating return

63, 64, 73 temperature sensor

70 more Thermie circulation connection

71 thermic flow 72 thermal return

74 heat exchangers

T63, T64 temperature values

80 pipe ring

81 first circulating pump

82 second circulating pump

85 expansion vessel

89 flow meter

90 housing

98 control line

97, 99 control device

100, 200 turf heating distributor

101 system distributor

250 ambient temperature sensor

300 additional heating distributor

T250 ambient temperature

400 solar thermal source

410 Solar thermal supply line

420 solar thermal return line

450 collector temperature sensor

T450 solar temperature

500 geothermal source

501 floor storage

510 Geothermal supply line

520 Geothermal return line 600 lawn heating

610 Lawn heating supply line

620 Lawn heating return line

650 floor temperature sensor

T650 floor temperature

690 ground level

700 thermic source

710 supply line

720 return line

730 surface layer

750 conventional heating

760 conventional lawn heating

770, 771 supply line

780, 781 return line

800 liquid heat transfer medium

V volume flow of the liquid

Heat transfer medium

900 method for heating a lawn

910 summer operating mode

920 second autumn / spring mode of operation

930 second winter operating mode

940 first winter operating mode

91 1 control step

921 control step

931 control step 941 control step

950 season-specific operating mode

951 - 955 query step

1000, 2000 turf heating system

Z770, Z771, Z780, Z781 auxiliary connections

Z16, Z17 control valve

Z70 valve arrangement

Z71, Z72 flow lines

SE sensor

Claims

claims

A lawn heater manifold (100, 200) comprising a housing (90) having a first, second and third valve assembly (10, 20, 30) and a controller connected to the first, second and third valve assemblies (10, 20, 30) (99) is arranged, wherein

the first, second and third valve assemblies (10, 20, 30) are connected in a conduit ring (80) for a liquid heat transfer medium (800), wherein

- a solar thermal circuit connection (40) branches off from the first valve arrangement (10),

- a geothermal circuit connection (50) branches off from the second valve arrangement (20),

- From the third valve assembly (30) branches off a turf heating circuit connection (60), and wherein

the controller (99) is configured to connect the first, second and third valve assemblies (10, 20, 30) according to a specific mode of operation to form an associated specific circuit of the conduit ring (80) with the solar thermal source (400) and / or geothermal -Source (500) and / or the lawn heater (600) to switch, such that

- The liquid heat transfer medium (800) via one of the circuit connections (40, 50, 60) and via a one of the circuit connection (40, 50, 60) associated, valve assembly (10, 20, 30) can enter the line ring (80), and

- To at least one of the other circuit connections (40, 50, 60) via at least one of the other circuit connection (40, 50, 60) associated, valve assembly (10, 20, 30) is feasible.

2. A lawn heating manifold (100, 200) according to claim 1, characterized in that the specific operating mode is a season-specific operating mode, which is associated with a specific cycle in the form of a season-specific cycle.

3. Lawn heating distributor (100, 200) according to claim 2, characterized in that the specific operating mode is set on the basis of a calendar time, in particular a monthly and / or weekly and / or daily set operating mode. Lawn heating manifold (100, 200) according to any one of claims 1 to 3, characterized in that the specific operating mode is set according to a limit temperature, which is measured by means of a temperature sensor.

Lawn heating distributor (100, 200) according to claim 4, characterized in that

a first limit temperature is an ambient temperature, in particular of the air, in particular in the range of 20 ° C, in particular between 18 ° C and 22 ° C; and

- A second limit temperature is a bottom temperature, in particular the air, in particular in the range of 2 ° C, in particular in the range of 0 ° C and 4 ° C, is.

Lawn heating manifold (100, 200) according to any one of the preceding claims, characterized in that a valve assembly is formed in the form of a control member for a liquid, in particular wherein the control member is selected from the group consisting of: valve, in particular three-way valve, throttle , Flap.

Lawn heating distributor (100, 200) according to one of the preceding claims, characterized in that

the valve arrangement associated with one circuit connection (40, 50, 60) is a valve arrangement (10, 20, 30) opening the line ring (80) to the one circulation connection (40, 50, 60) and / or

the valve assembly associated with the other circuit port (40, 50, 60) is a valve assembly (10, 20, 30) opening the conduit ring (80) to the other circuit port (40, 50, 60).

Lawn heating distributor (100, 200) according to one of the preceding claims, characterized in that the

first, second and third circuit connection (40, 50, 60) each have a flow (41, 51, 61) and a return (42, 52, 62) and a number of temperature sensors 30 (43, 44, 53, 54, 63, 64), each flow (41, 51, 61) and each return (42, 51, 61) each having a temperature sensor uniquely associated therewith to set a temperature of the liquid heat transfer medium (T43, T44, T53, T54, T63, T64) in the respective flow (41, 51, 61) and return (42, 52, 62) to capture. A lawn heating manifold (100, 200) according to any one of the preceding claims, characterized in that the control means (99) comprises a data receiving module adapted to measure the temperature (T250) of an ambient temperature sensor (250), the temperature (T650) of a lawn heater (600 ) and read the temperature (T450) of a collector temperature sensor (450).

Lawn heating distributor (100, 200) according to any one of the preceding claims, characterized in that the control device (99) is formed, a - especially season-specific- operating mode based on one of the temperature sensors (43, 44, 53, 54,63, 64) detected temperature value (T43, T44, T53, T54, T63, T64) and / or a temperature value (T250, T650, T450) detected by an ambient temperature sensor (250), a bottom temperature sensor (650) and / or a collector temperature sensor (450).

Lawn heating manifold (100, 200, 101) according to any one of the preceding claims, characterized in that exactly three valve assemblies (10, 20, 30) or exactly four or five valve assemblies (10, 20, 30, 18, Z70) are included, in particular at least one (Z70) of the four or five valve assemblies (Z70) is not connected in the conduit (80) for the liquid heat transfer medium (800).

Lawn heating distributor (100, 200) according to one of the preceding claims, characterized in that the first, second and third valve arrangement (10, 20, 30) are each formed from two control valves (1 1, 12, 13, 14, 15) arranged in pairs wherein a control valve (1 1, 12, 13, 14, 15) is simultaneously part of the first valve assembly (10) and the third valve assembly (30).

13. Lawn heating distributor (100, 200) according to any one of the preceding claims, characterized in that the liquid heat transfer medium (800) to exactly one of the other circuit connections (40, 50, 60) over exactly one of the exactly another circuit connection (40, 50, 60 ), the line ring (80) to the exactly one other circuit connection (40, 50, 60) opening valve assembly (10,

20, 30) is feasible. Lawn heating manifold (100, 200) according to any one of the preceding claims, characterized in that the liquid heat transfer medium (800) to exactly two of the other circuit connections (40, 50, 60) is feasible, the exactly two other circuit connections each exactly another one the line ring (80) to the respective circuit connection opening valve assembly (10, 20, 30) is assigned, by which the liquid heat transfer medium (800) to the respective one of the other two other circuit connections (40, 50, 60) is feasible.

Lawn heating distributor (100, 200) according to one of the preceding claims, characterized in that a heat transfer medium (800) in the line ring (80) can be guided without storage.

Lawn heating manifold (100) according to any one of the preceding claims, characterized in that the conduit ring (80) in a heat exchanger-free line system of the turf heater manifold (100) is integrated.

17. Turf heating manifold (200) according to any one of the preceding claims, characterized in that a fourth valve arrangement (18) in the line ring (80) for a liquid heat transfer medium (800) is connected.

18. Lawn heating distributor (200) according to claim 17, characterized in that the fourth valve arrangement on the line ring (80) connects to a heat exchanger (74).

19. System distributor (101) with a turf heating distributor (100, 200) according to one of the preceding claims and an auxiliary heating distributor (300), characterized in that the auxiliary heater distributor (300) has a further, preferably a fifth, valve arrangement (Z70), of which a Zusatzheizungsan- connection (ZHZ) and a Zusatzrasenheizungsanschluss (ZRH) branches off, in particular the auxiliary heating manifold (300) uncoupled from the Rasenheizungsverteiler (100, 200) is operable, in particular without exchange of heat transfer medium between the Rasenheizungsverteiler (100, 200) and the auxiliary heating manifold (300 ). A lawn heating system (1000) comprising a turf heater manifold (100) according to any one of claims 1 to 19, wherein at least one solar thermal source (400) is coupled to the solar thermal circuit connection (40), at least one near-surface geothermal source to the geothermal circuit connection (50) (500) and at least one lawn heater is connected to the radiant heating circuit connection (60).

Lawn heating system (1000) according to claim 20, characterized in that the at least one solar thermal source (400) spatially separated from and surface non-overlapping to the at least one turf heater (600) is arranged and wherein the flow temperature of the turf heating below 19 ° C, the return temperature is above 13 ° C.

Lawn heating system (1000) according to claim 20 or 21, characterized in that the line ring (80) of the Rasenheizungsverteilers (100), the solar thermal source (400), the geothermal source (500) and the turf heater (600) one, in particular season-specific , Circuit of the lead ring (80) with the solar thermal source (400) and / or the geothermal source (500) and / or the turf heater (600) for one and the same liquid heat transfer medium (800).

Lawn heating system (1000) according to any one of claims 20 to 22, characterized in that, in particular season-specific, circuits selected from a group of circuits are switchable, such that

in a first, in particular year-time-specific, cycle of the group (solar thermo-geothermal cycle) only the solar thermal source (400) and the geothermal source (500) are fluid-connected via the line ring (80),

in a second, in particular seasonal, cycle of the group (solar thermal lawn heating circuit) only the solar thermal source (400) and the turf heater (600) via the line ring (80) are fluid-connected,

in a third, in particular seasonal, cycle (solar thermal geothermal turf heating cycle), the solar thermal source (400), the geothermal source (500) and the turf heater (600) via the conduit ring (80) are fluidly connected, - In a fourth, in particular year-specific, cycle (geothermal lawn heating circuit) only the geothermal source (500) and the turf heater (600) via the line ring (80) are fluidly connected. 24. lawn heating system (1000) according to one of claims 20 to 23, characterized in that

- In the turf heater manifold (200) a fourth valve assembly (18) in the line ring (80) for a liquid heat transfer medium (800) is connected, in particular the fourth valve assembly on Leitungsrig (80) to a heat exchanger (74) connects,

- The duct ring (80) of the turf heater manifold (200), the solar thermal source (400), the geothermal source (500) and the turf heater (600) one, in particular season-specific, primary circuit of the line ring (80) with the solar thermal source (400) and / or the geothermal source (500) and / or the turf heater (600) for one and the same liquid heat transfer medium (800) and

- A secondary circuit with a surface thermal source (700) is coupled by means of the fourth valve arrangement on the line ring (80). 25, lawn heating system (1000) according to one of claims 20 to 24, characterized in that of a number, preferably four, in particular season-specific, circuits only one at a time by the control device (99) is actively switched. 26. Turf heating system (1000) according to any one of claims 20 to 25, characterized in that the geothermal source (500) is developed as a surface geothermal probe having a temperature of the liquid heat transfer medium (800) between 15 ° C and 20 ° C supplies and the solar thermal source (400) is designed as a solar collector, which provides a temperature of the liquid heat transfer medium (800) above 50 ° C, in particular above 70 ° C, preferably up to at least 100 ° C.

27. Lawn heating system (1000) according to any one of claims 20 to 26, characterized in that a column height of the surface geothermal probe, in particular in the range between 200 m and 400 m, on the solar collector surface is tuned in accordance with a storage capacity of the soil surrounding the surface geothermal probe.

Method for heating a lawn, wherein

- A liquid heat transfer medium (800) by means of a Rasenheizungsverteilers (100), in particular by means of a Rasenheizungsverteilers (100) according to one of claims 1 to 9, out, and wherein

- The liquid heat transfer medium (800) between a turf heater (600), a solar thermal source (400) and a geothermal source (500) via a line ring (80) of the turf heater manifold (100) memory-free and according to one, in particular season-specific, operating mode out is by

- The liquid heat transfer medium (800) by the line ring (80) branching, the solar thermal source (400), the geothermal source (500) and the turf heater (600) associated with circuit connections (40, 50, 60) to form a, in particular Seasonal, circuit of the line ring (80) with the solar thermal source (400) and / or the geothermal source (500) and / or the turf heating (600) is performed.

A method according to claim 28, characterized in that

- The liquid heat transfer medium (800) via one of the circuit connections (40, 50, 60) and via the one circuit connection (40, 50, 60) associated, the line ring (80) to the one circuit connection (40, 50, 60) opening Valve assembly (10, 20, 30) enters the conduit ring (80), and

- to at least one of the other circuit connections (40, 50, 60) via at least one of the other circuit connection (40, 50, 60) associated, the line ring (80) to the other circuit connection (40, 50, 60) opening valve assembly (10, 20, 30) is guided.

Method according to claim 28 or 29, characterized by a summer mode of operation with the method steps:

Controlled supply of a quantity of heat from the solar thermal source (400) to the geothermal source (500) by means of the liquid heat transfer medium (800),

Controlled recycling of the liquid heat transfer medium (800) from the geothermal source (500) back to the solar thermal source (400). Method according to one of claims 28 to 30, characterized by a first autumn spring mode of operation and / or a second winter mode of operation with the method steps:

Controlled supply of an amount of heat from the solar thermal source (400) to the turf heater (600) by means of the liquid heat transfer medium (800),

Controlled recycling of the liquid heat transfer medium (800) from the turf heater (600) back to the solar thermal source (400).

32. The method according to any one of claims 28 to 31, characterized by a

second fall / spring mode with the steps:

Controlled supply of a quantity of heat from the solar thermal source (400) to the geothermal source (500) by means of the liquid heat transfer medium (800), - controlled supply of a quantity of heat from the geothermal source (500) to the turf heater (600) by means of liquid heat transfer medium (800),

33. The method according to any one of claims 28 to 32, characterized by a

first winter operating mode with the process steps:

Controlled supply of a quantity of heat from a geothermal source (500) to the turf heater (600) by means of the liquid heat transfer medium (800),

Controlled recycling of the liquid heat transfer medium (800) from the turf heater (600) back to the geothermal source (500).

34. The method according to any one of claims 28 to 33, with the method step:

- Designing the respective applicable season-specific operating mode based on a history of climatic and / or geological data.

Method according to one of claims 28 to 34, characterized in that a turf heating distributor (100, 200) according to one of claims 1 to 18

- Is operated in a primary circuit with the involvement of the line ring (80), and / or

- Is operated via a fourth valve assembly (18) of the line ring (80) and a heat exchanger coupled to a secondary circuit with a surface thermal source. A method according to any one of claims 28 to 35, characterized in that an auxiliary heating manifold (300) is operated uncoupled from the turf heater manifold (100, 200) according to any one of claims 1 to 18, in particular without exchange of heat transfer medium between the turf heater manifold (100, 200) and the An auxiliary heater manifold (300), wherein the supplemental heater manifold (300) exchanges another heat exchange medium between an auxiliary heater port (ZHZ) and an auxiliary lawn heater port (ZRH).