DE102009007053A1 - Control or regulation of a heating system and heating system - Google Patents

Abstract

Method for controlling a heating system (1) having a buffer store (2) which comprises both a regenerative first heat source (18) and a circulation water heater provided with an internal return-side mixing valve (32) and a circulating pump (33) arranged downstream thereof can be heated, further comprising a Hochtemperaturheizzweig (5) and via a mixing valve means (4) supplied Niedertemperaturheizzweig (6), in the actual values of the flow temperature of the circulating water heater (3), the flow temperature of at least one of the heating branches (6) and the outside temperature as the setpoint be considered for comparison and in which at a control deviation in terms of a larger heat requirement, first the internal return side arranged mixing valve (32) is adjusted and upon reaching the distortion thereafter, the heat delivery of the circulating water heater (3) is increased.

Description

renewable heat sources For one thing, they are far less controllable than fossil-heated heat generators. This is especially true for Solar systems, but also for Biomass combustion, combined heat and power and heat pumps and requires their operation on buffers in which the regenerative heat is stored until its use. On the other hand has heat especially from solar plants and heat pumps only over a limited temperature level, which heat disproportionately at a high temperature level makes precious. Both reasons So you need one as possible efficient discharge of the buffer tank with the aim of high temperatures as long as possible to maintain and cool middle fastest and lowest possible.

Of the The invention is therefore based on the object, a method and to show a device for its implementation, which one Such discharge afford and yet with the least possible changes from the current standard of regulations and components can be realized. she will be solved with the characteristics of the independent Claims, by mixing the mixer of a high-temperature circuit with at least two his entrances directly with at different heights connected to the buffer memory connections and the mixer one or more low-temperature circuits is connected upstream.

Around the dependence the downstream low-temperature mixing circuits is considered a maximum setpoint function is described which ensures that at any time the downstream mixing circuits with a sufficient be supplied high temperature level. Due to the gravitational Layering but at the same time ensuring that only so little as necessary on a possibly higher Temperature level is accessed. For this purpose, the mixer is alone according to its flow temperature by an actuator by means of a 3-point signal regulated, which is a simple and commercially available form.

A more useful Application of the invention is this regulation in a peak load heat source to integrate. It will be in the drain of the upstream mixer installed and thus connected to the control system that their Firing is activated only when the mixing valve is fully closed the top of its cache connections is open. The only part of the buffer store, which is loaded with fossil-generated heat, is the topmost Zone for domestic hot water preparation. The loading happens over the Connection of a charge pump in the heat source supply, the heated water into the top buffer connection promotes, which is still above the buffer memory terminals, with the upstream Mixing valve are connected. For this purpose, the upstream mixer is full to the top of its buffer connections opened to to carry out the charging process with the least possible use of fuel. Of the Charging circuit is over in sleep mode Gravity brakes or backflow preventer shut off.

Circulating water heater are very common in heating technology and are increasing as peak load heat sources combined with buffer storage. Most of these devices own an integrated in the device return Change-over valve (RUV), which switches over from the "Heating" operating mode to the "DHW heating" operating mode. When combined with buffers, however, is a placement the changeover valve in the flow (VUV) advantageous because only here the Flow from the heating system to the described uppermost Buffer connection can be redirected. By installing an additional external changeover valve (VUV) in the flow of the circulating water heater becomes the original, integrated in the device return Reversing valve (RUV) useless. By giving it the already described Assigns function of an upstream mixing valve, resulting in simple Adaptation of its control possible is a particularly economical application of the invention shown. This is even more so as that many return flow valves already today are equipped with drives that have a variety of intermediate positions enable what for one Mixing function is essential is. This function conversion is especially useful, if only a single heating circuit is to be operated. To this Way you can device concepts large series flexible and with little effort the needs changing Adapted to market requirements.

Further Embodiments and particularly advantageous developments of the invention result from the features of the dependent claims.

Some embodiments of the invention will be described below with reference to FIGS 1 to 10 explained in more detail in the drawings.

Of these, the show 1 to 9 hydraulic diagrams and the 10 a control circuit diagram of a heating system.

All used in the drawings or the description below Reference numerals indicate the same details.

The heating system 1 according to 1 basically has five elements, namely a service water buffer 2 , a gas-fired Circulating water heater three , a mixing valve device 4 , a high temperature heating branch 5 and a low temperature heating branch 6 which are all interconnected via a variety of pipelines.

The water heater 2 is from an upright vessel 59 formed by its top 7 one with a valve 8th provided service water pipe 9 going on. An interior 10 of the vessel 59 is through a step insert 11 divided, which has a hot water room 12 from a heating water room 13 separates. In the lower area 60 of the service water room 12 opens a Kaltbrauchwasserzulaufleitung 14 ,

In the heating water room 13 is the bottom area 60 of the service water room 12 enclosing, a heat exchanger coil 15 arranged with their two ends 16 and 17 to a series connection of a solar collector 18 with a charge pump 19 connected.

The process water buffer tank 2 has four more connections 20 . 21 . 22 and 23 on, of which the highest point 20 with one over a connection 24 an external priority changeover valve 25 to a circulating water heater feed 26 leading line 27 connected is. One to one from a burner 28 heated heat exchanger 29 of the circulating water heater three leading circulation water heater return 30 is with the nearest lower connection 21 through a pipe 31 indirectly via a series connection of an internal return flow switching valve 32 , which is able to take a multiplicity of possible intermediate positions besides its two end positions, ie has a mixing function, with a circulating pump 33 connected.

A fuel, preferably gas supply line 61 to the burner 28 is with a solenoid valve having burner control 62 and the circulation pump 33 with a motor 63 Mistake. Both changeover valves 25 and 32 have an actuator 64 respectively. 65 on. On a side wall of the hot water buffer tank 2 are two temperature sensors at different heights 66 and 67 and at the circulating water supply line 26 another temperature sensor 68 arranged, all three via sensor lines 69 with a regulator 70 are connected. A setpoint is the controller 70 via a setpoint generator 71 namely the size of a temperature difference (between the values of the temperature sensor 66 and 67 ). The regulator 70 acts via control lines 72 on the control valve of the burner control 62 and the actuators 64 and 65 as well as the engine 63 one.

The circulation pump 33 In addition, it can have a pressure regulator that measures the differential pressure across the pump 33 in the pipes 26 / 31 with a sensor, compares it with a value that can be specified at a setpoint generator on the controller and regulates it to a differential pressure of about 200 mbar corresponding to 2 m water column.

With the circulation water heater feed 26 is still on one to another connection 34 the external priority changeover valve 25 connected line 35 the mixing valve device 4 directly over a revision valve 73 connected. The administration 35 goes through the mixing valve device 4 through, being in the mixing valve device 4 downstream of a branch line 36 a gravity brake or a backflow preventer or check valve 58 located. At the exit 38 in which there is another revision valve 73 located, from the mixing valve device 4 continuing line 35 leads to the high temperature heating branch 5 which consists of a parallel connection of a variety of each with a thermostatic valve 39 provided radiators and / or convectors 40 consists. A return line 41 of the high temperature heating branch 5 leads over another inspection valve 73 to one in the mixing valve device 4 arranged branching point 42 and then sits down via a pressure control valve 82 to another branching point 43 and then to the port 22 at the water heater 2 continued. The parallel connection of all radiators or convectors 40 is by means of a pressure control valve 74 bridged, which directly to the lines 35 and 41 connected. The further branching point 43 is by means of a line 44 with another connection of the internal return flow control valve 32 connected.

From the branch line 36 leads inside the mixing valve device 4 one with a gravity brake or a backflow preventer or check valve 45 provided wire 46 to a first input (E1) of the actual from a servomotor 37 operated mixing valve 47 , which has two further inputs (E2 and E3), of which the input E3 is closed, but can be opened and used for other applications. The input E2 is via a gravity brake or a backflow preventer or check valve 55 with the branching point 42 in the return line 41 connected. An output A of the actual mixing valve 47 is over a line 48 with a counter-current plate heat exchanger 49 connected, the part of the Niedertemperaturheizzweiges 6 is. The return side is the plate heat exchanger 46 with a through the mixing valve device 4 passing line 50 connected to the connection 23 leads. The low temperature heating branch 6 has a circle on the secondary side 51 on, which consists of a series connection of a secondary side 52 of the plate heat exchanger 49 with one or more, each with a further thermostatic valve 39 provided, floor heating coils 53 with a circulation pump 54 consists of two additional inspection valves 73 are connected. The temperature of the flow in the pipe 75 in the low temperature heating branch 6 is from a temperature sensor 76 measured.

In the line 50 located between the outlet to the mixing valve device 4 and the connection 23 a changeover valve 77 whose drive 78 from a temperature sensor 79 can be actuated, which its measured value with one of a setpoint generator 80 set value compares.

The heating system after 1 with the cache 2 that exemplifies a solar system 18 is heated regeneratively and in its interior 10 If there is a drinking water tank, it has the following function: Due to the thermal expansion and gravity, the hotter water at the top and the colder water at the bottom accumulate in slim, upright vessels. The cache 2 has four connections at different heights 20 to 23 so that between each two of these connections a total of three temperature zones arise. The aim of regenerative heat utilization must be to heat the topmost hot zone as quickly as possible and to keep it hot for as long as possible, while the lowest cold zone must be cooled down as quickly as possible and kept cold as long as possible. A circulating water heater three with a switching valve (RUV) designed as a mixing valve for the purpose of domestic hot water preparation in its return 32 Therefore, an external second changeover valve (VUV) is used in the flow 25 downstream, which now in the drinking water heating the topmost connection 20 of the buffer memory 2 with the lead 26 of the circulating water heater three connects, so that the hot zone can be heated up as quickly as possible. This is best done by keeping the return 30 of the circulating water heater three with the second highest connection 21 is connected, including the switching valve RUV 32 puts in the appropriate position. In this way, the fuel-based heat only in the uppermost hot zone of the buffer memory 2 introduced, which thereby reaches the required minimum temperature as quickly as possible. This is done by the DHW cylinder temperature sensor 66 measured between the two topmost terminals 20 and 21 is appropriate.

Once the generally priority drinking water heating is completed, the circulation water heater goes off three into the heating mode via and the changeover valve (VUV) 25 is from the regulator 71 switched. In the embodiment of 1 are two heating circuits, a low-temperature 5 and a high temperature heating circuit 6 to supply. The special multi-way mixing manifold shown here 4 has three connections to the heat generators and uses the return 41 of the high temperature circuit 5 as a lead 48 for the system separation of the low temperature circuit. The topmost port of the mixing valve device 4 is in heating mode via the changeover valve (VUV) 25 with the lead 26 of the circulating water heater three connected. Its built-in pump 33 transports the hot supply water via a gravity brake or a backflow preventer 58 in the flow of the high-temperature circuit 5 , One to his heating surfaces 40 parallel pressure-controlled overflow valve 74 can ensure the minimum circulation and the differential pressure across the heating surfaces 40 and the low temperature mixing valve 47 to limit typical 1-2 mWS or 100-200 mbar. Alternatively, a differential-pressure-controlled pump can also be used 33 ' in circulating water heater three be used. From the return of the high-temperature circuit, the still warm heating water passes through a second pressure-controlled overflow valve to the middle connection of the mixing valve 47 and from there to the third highest cache port 22 , This pressure-controlled overflow valve produces, for example, a pressure drop of 0.6 mWS or 60 mbar, which allows the heating water to flow through the system separation even without an additional pump. The 3/2-way mixing valve has three inputs E1 to E3 and an output A: E1 connects the output to the hot flow 30 from the circulating water heater three , E2 with the pressure-side part high-temperature return 41 and the input E3 is permanently closed, so that the valve in this position interrupts the flow of water to the outlet. This makes it possible to regulate the system separation connected to the outlet either by a mixture of hot supply water from the circulating water heater and warm high-temperature circuit return (3-way mixing operation) or by throttling the throughput of high-temperature circuit return (2-way). Throttle drove). This has the two advantages of firstly saving a pump before system separation and, secondly, achieving a low return temperature from the system separation. This method and its device are patent pending (Az. 10 2007 059 750.0). The actuator of the 3/2-way mixing valve is controlled by a conventional 3-point signal, whereby the flow temperature behind the. System separation is regulated. While the unused excess of the high-temperature return flows back to the third uppermost buffer tank connection via the pressure-controlled overflow valve, the cold return from the system separation of the low-temperature circuit reaches the lowest buffer tank connection 23 back.

On its way there can be optionally used a conventional differential temperature switching valve (DTU) in many solar systems. This is controlled by a differential temperature control (DTS) and carries the heating water only in the buffer tank when the return is colder than the cold zone of the buffer tank. This is not the subject of the invention and is shown by way of example only. The circulating water heater usually has a control with at least one integrated flow sensor (VFint), an outside temperature sensor (AF) and a WWSF as sensors and a burner control with fuel valve, an actuator of the reversing valve RUV and the integrated circulation pump 33 as actors. In this case, the desired value of the flow temperature control is usually derived depending on the weather by means of a heating curve from the outside temperature, which is also usually time-dependent. By using the second low-temperature circuit, another control loop with a second heating curve and a second flow sensor is added, which is controlled by a 3-point signal and the actuator of the mixing valve in its flow temperature.

As described here as optimal loading of the hot zone of the buffer 2 is not possible via a built-in return reversing valve RUV, this factory integrated component is useless by the switching valve VUV described here. However, it is a requirement of efficiency and comfort to be able to control all heating circuits in their flow temperature. It is true that the circulating water heater can be used three at a dumped buffer memory 2 by reheating raise the flow temperature, but not with a full buffer this also lower. Here now the invention is to use the now useless switching valve RUV as a mixing valve in the return (RMV) of the circulation water heater and thereby use economically. This is particularly possible in such embodiments, the actuator already allows a variety of intermediate positions, such as stepper motors. As a result, the circulating water heater with its return can access a mixture of the second uppermost buffer connection and the high-temperature circuit return or the third uppermost buffer connection and thereby also regulate its own flow temperature in a lowering manner.

According to the embodiment 2 is the domestic water storage room 12 within the step insert 11 omitted, the process water is in a continuous process of one of the lines 9 and 14 connecting pipe coil 81 heated.

In contrast to 1 takes place during execution 2 the drinking water heating here over the in the buffer memory three lying helical tube heat exchanger 81 , for example made of stainless steel corrugated pipe. Even such combination buffers are widely used. The low temperature mixer 47 is exemplified as a 3 × 4 multi-way mixing manifold without system separation. Its 3/3-way mixer supplies the low-temperature supply either from a mixture of hot circulating water heater supply 35 with warm high temperature return 41 or from warm high temperature return 41 with cold low temperature reflux 50 , The difference resulting from different water flows can be in both directions to the middle of the three lower buffer connections 22 stream. This method of heat removal is also a patent pending (DP 102 45 572.4) and ensures by two-zone discharge for the described rapid cooling of the lowest cold zone with simultaneous extension of the service life of the middle hot zone of the buffer memory 2 ,

According to the embodiment three is analog 1 the process water storage room 12 again available, this is the line 41 omitted, the line 50 is at a junction 83 downstream of the pressure control valve 82 into the pipe 41 guided.

three again shows a buffer memory as another embodiment three with internal domestic hot water tank. In contrast to the 1 However, the low temperature circuit 6 supplied via a 2 × 4 multi-way mixing manifold. Although this also uses the high-temperature circuit return 41 for supplying the system separation of the low temperature circuit 6 with the 3/2-way valve already described, but in contrast to the 3 × 4 valve has only two connections to the heat generators, by bringing the middle and the lower terminal of the 3 × 4-jet to a common port. This method of heat extraction is also a patent pending (DP 102 45 571.6). Due to its only two ports, this distribution device is particularly suitable for buffer memory, which have only three ports and consequently can not be operated in the heating operation on the described two-zone discharge. The second lowest connection of the buffer can therefore be omitted.

The 4 shows the possibility that the circuit after 2 with regard to domestic water heating in a continuous process with the simplified design of the piping three is combinable and that the plate heat exchanger 49 may be omitted if the otherwise closed entrance E3 to a junction 84 in the pipe 50 is connected.

4 again shows a buffer memory as another embodiment 2 with an integrated tube spiral heat exchanger 81 for drinking water heating. The low temperature mixer 47 is exemplified as a 2 × 4 multi-way mixing manifold without system separation. Its 3/3-way mixer either supplies the low-temperature flow a mix of hot circulating water heaters 26 with warm high temperature return 41b or from warm high temperature return 41 with cold low temperature reflux 50 , The difference resulting from different water flows can be in both directions via an internal bypass 100 stream. This arrangement is also obtained by combining the two lower connections to the heat generators into a single one in the already described 3 × 4 multi-way mixing distributor. A patent has been granted for this process of heat distribution (DP 198 21 256.9-34). This embodiment is also particularly for buffer memory 2 suitable, which have only three ports and therefore can not be operated in the heating operation on the described two-zone discharge. The second lowest connection of the buffer can therefore be omitted.

In the 5 is the low temperature heating branch 6 together with the mixing valve device 6 omitted, the service water buffer 2 is designed as a layer memory and the lines 31 and 41 are over a greater height with outlet openings 84 . 85 provided muzzle tubes 86 and 87 fitted.

These 5 Finally, an embodiment in which the internal change-over mixing valve 32 of the circulating water heater three is used as return mixing valve with only a single heating circuit. As a special feature of the buffer memory 2 Here are intake and outlet pipes 101 and 103 with devices 102 and 104 shown for breaking the mechanical pulse, which is why such buffer memory are also called layer memory. In contrast to the design chosen here with a total of four buffer connections and those with only three are known what the invention, as already shown, does not detract. From the control device 70 then omitted the measuring and control device of the low temperature circuit 6 , Since this simpler case describes the standard, it is common to distribute these components as expansion accessories of the control.

Other possibilities to use the method according to the invention and the devices according to the invention are represented by the embodiments 6 to 9 Shown here are the same heat distributions as before in the 1 to 4 , in contrast to these here no circulating water heater three is required for reheating, which is particularly useful in connection with pellet boilers and heat pumps on compression basis of practical importance. Especially with heat pumps, care must be taken to ensure a careful handling of hot water, since in these machines the thermodynamic efficiency decreases sharply with increasing flow temperature. It is therefore of interest, in the heat extraction only as low as possible, on the second highest connection 21 of the buffer memory 2 and, instead, to extract all of the heat that can be used at a lower temperature level from the underlying thermal zone. This is done by mixing and distributing the low temperature circuit 6 in the same way the 3-way mixer 32 upstream, as already for the return mixing valve of the circulating water heater three was disclosed. The same regulator scheme is used according to 10 used. 6 shows, for example, a buffer memory 2 with four connections, the domestic hot water production via a standard external heat exchanger station. The 3 × 4 multi-way mixing manifold 47 upstream 3-way mixer 32 supplies the high-temperature circuit 5 through a mixture of the second-highest buffer port 21 with the high temperature return 41 , The 3-way mixer downstream pump 33 conveys the heating water through the 3 × 4 multi-way mixing manifold 47 so that it is also available to the 3/2-way valve as a hot flow at its input E1. About that in the high-temperature return 41 used differential pressure-controlled overflow valve (typically: 0.6 mWS or 60 mbar) is at the input E2 of the 3/2-way valve also warm high-temperature return 41 to disposal. The system separation at the output A of the 3/2-way valve is thus again supplied without primary pump either from a mixture of these two temperatures (3-way mixture) or from the throttled high-temperature return alone (2-way throttling). The differential-pressure-controlled overflow valve in the high-temperature circuit (typically: 1-2 mWS or 100-200 mbar) limits the differential pressure across the 3/2-way valve, which is also possible with a differential-pressure-controlled pump 33 can be achieved in the high temperature circuit. That in the return to the bottom buffer port 23 illustrated differential-temperature switching valve 77 is only an option and is not part of the invention. The control of the actuators of both mixing devices 32 and 47 takes place via 3-point signals. It acts on the respective flow temperature, which is measured by means of a sensor and adjusted via the set-actual comparison in the controller. Again, the maximum function described ensures that the requirement of the downstream mixing circuits is taken into account at all times.

7 shows as another embodiment, the same heat generator and buffer storage arrangement, wherein the 3 × 4 multi-way mixing manifold 4 the low temperature circuit 6 without system separation via its 3/3-way mixer 47 either from a mixture of hot water from the second-highest buffer tank port 21 with the high temperature return 41 supplied or from one Mixture of high temperature reflux 41 with low temperature return 50 , Here, in contrast to the 3 × 4 multi-way mixing manifold 4 the high temperature circuit pump 33 be followed by the mixing device. This allows the high temperature circuit 5 from the regulator 70 by switching off his pump 33 be switched on and off separately regardless of the respective setpoint.

8th For example, as a low-temperature mixing and distribution device, a 2 × 4 multi-way mixing manifold is shown 4 , Contrary to the execution after 6 Here are the two lower connections of the 3 × 4-jet multi-way mixing manifold brought out combined to a common connection. 8th however, unlike three the connection to a buffer with four connections. The connection of a buffer with only three connections was thus analogous to three ,

9 Finally, finally, as a low-temperature mixing and distribution device, a 2 × 4 multi-way mixing manifold. In contrast to 7 Here are the two lower connections of the 3 × 4 multi-way mixing manifold brought out combined to form a common connection. 9 however, unlike 4 the connection to a buffer with four connections. The connection of a buffer with only three connections was thus analogous to 4 ,

The structure of the controller 70 arises from the 10 as follows: An outside temperature sensor 86 is over a line 87 both with a heating curve generator 88 for the high temperature heating branch 5 as well as with a second (or further) heating curve former 89 for the low temperature heating branch 6 connected, which form the actual value of the outside temperature setpoints for the flow temperatures. These are from a timer 90 over a line 91 moved parallel (lowered). The outputs of the two heating curve formers 88 and 89 are with a discriminator 92 associated with the higher or highest of the upcoming setpoints from the one or more heating curves 88 to 89 selects. The output of the discriminator 92 each forms an input of one of the individual controllers 93 to 95 , of which the single regulator 93 a proportional controller is what the Characteristics 96 indicates, while the single controller 94 a three-point controller is what the Charateristik 97 identifies and the individual controller 95 Another three-point controller is what the Charateristik 98 indicates. The output of the single controller 93 is with the Benner control 62 , the output of the single controller 94 is with the drive 64 of the internal change-over mixing valve 32 of the circulating water heater three and the output of the single controller 95 is with the drive 99 the internal actual mixing valve 47 connected. The heating water leads to feedback to the temperature sensors 68 and 85 , There is a priority of the adjustment of the internal change-over mixing valve 32 of the circulating water heater three before actuating the Benner control 62 with increasing heat demand from one of the heating branches 5 or 6 , that is, the burner is only controlled up when the mixing valve 32 is in its final position, and with decreasing heat demand, the burner is first controlled to lower heat delivery and then turned off before the open mixing valve 32 his final position leaves.

The controller just described has the following function: as well as the existing control of the circulating water heater three to modify shows 10 , From outdoor sensor AF 86 the outside temperature reaches the two time-dependent heating curves 88 and 89 of the high and low temperature circuit 5 and 6 , with which the two time and outside temperature-dependent setpoints of the respective flow temperature are calculated. During the setpoint of the low temperature circuit 6 is directly compared with the actual value and the control deviation via a 3-point signal acts on the low-temperature circuit mixing device, the setpoint of the high-temperature circuit 6 initially via a maximum function in the discriminator 92 with the setpoint of the low temperature circuit 6 adjusted. This function only passes the maximum value of all inputs to the output of two or more input signals. The reason is that the return mixing valve 32 as upstream mixing valve not only the flow temperature of the high temperature circuit 5 influenced, but also the flow temperature of the downstream low-temperature circuit 6 and its mixing device 47 , So, for example, would be time-dependent the setpoint of the high temperature circuit 5 smaller than that of the low temperature circuit 6 , so would the downstream low-temperature circuit mixer 47 no longer able to meet the requirement of his circle. However, the maximum function ensures that the requirement of the downstream mixing circuit is taken into account from the outset. This expressly applies to several downstream low-temperature circuits. The maximum setpoint thus formed reaches the controller on the one hand 94 by means of a 3-point signal 97 the mixing valve 32 controls and on the other hand over a here shown as an example of a modulating system Proportionalsignal the burner 28 of the circulating water heater three controls, which is ensured by a suitable release that first by opening the mixing valve 32 the cache 2 Existing regenerative heat is withdrawn before adding new fuel in the circulating water heater three starts.

The particular economic benefit of the invention is therefore to describe a method and a device that make it possible rain using heat as efficient as it is comfortable using components that are already partly contained in the high-volume products (circulating water heaters), which greatly increases their economic benefits.

1

heating system

2

Hot water buffer (BWPS)

3

Circulating water heater (UWH)

4

Mixing valve apparatus

5

Hochtemperaturheizzweig

6

Niedertemperaturheizzweig

7

top of the BWPS

8th

Valve Business Administration

9

Water pipe (BWL)

10

inner space (BWPIR) of the BWP

11

Hot water heater (BWS) in the BWPIR, here stepped

12

Water interior (BWIR) of the BWP

13

Heating water interior (HWIR) of the BWP

14

Cold water supply line (KWZL)

15

Solar heat exchanger coil (SWTRS)

16

Flow connection the SWTRS

17

Return connection the SWTRS

18

solar collector

19

Solar charging pump

20

top Connection of the BWPS

21

second-highest Connection of the BWPS

22

second-unterster Connection of the BWPS

23

unterster Connection of the BWPS

24

charging output of the exVUV

25

external Changeover valve in the flow (exVUV)

26

supply line of the UWH

27

Domestic water charging flow line (BWLVL)

28

burner of the UWH

29

Primary heat exchanger (PWT) of the UWH

30

Return line of the UWH

31

Heizrücklaufleitung of the UWH

32

internal Changeover valve in the return (IntRUV)

33

internal circulating pump of the UWH

34

Heat Output of the exVUV

35

Heizvorlaufleitung

36

Leittungsverzweigung

37

servomotor

38

output

39

thermostatic valve

40

radiator

41

returns

42

branching point

43

branching point

44

management

45

check valve

46

management

47

mixing valve

48

management

49

Plate heat exchanger

50

management

51

circle

52

secondary side

53

heating coil

54

circulating pump

55

check valve

56

57

58

check valve

59

Vessel

60

lower Area

61

fuel line

62

Burner control / solenoid valve

63

64

magnetic drive

65

magnetic drive

66

temperature sensor

67

temperature sensor

68

temperature sensor

69

management

70

regulator

71

Setpoint generator

72

management

73

revision valve

74

Pressure control valve

75

management

76

temperature sensor

77

switching valve

78

drive

79

temperature sensor

80

Setpoint generator

81

coil

82

Pressure control valve

83

junction point

84

junction point

85

temperature sensor

86

Outdoor temperature sensor

87

management

88

Heizkurvenbildner

89

Heizkurvenbildner

90

timer

91

management

92

discriminator

93

regulator

94

regulator

95

regulator

96

characteristics

97

characteristics

98

characteristics

99

drive

100

bypass

101

pipe

102

breaker

103

pipe

104

breaker

Claims (19)

Control or regulation for operating a heating system with a heated by one or more regenerative heat generator Bufferspei cher ( 2 ), one with a mixing device ( 32 ) for the 3-point signal control of its flow temperature provided high-temperature heating circuit ( 5 ) and at least one with a mixing device ( 4 ) for further 3-point signal control of its flow temperature provided Niedertemperaturheizkreis ( 6 ), characterized in that the mixing device ( 32 ) of the high temperature heating circuit ( 5 ) with all its inputs directly with at different heights of the buffer memory ( 2 ) ( 20 to 23 ) and the mixing device ( 4 ) of the mixing devices of the low-temperature circuits ( 6 ), wherein the setpoint of the flow temperature of the high-temperature circuit ( 5 ) at any time corresponds to the maximum of the setpoints of the flow temperatures of all heating circuits. Control or regulation according to claim 1, characterized in that the upstream mixing device ( 32 ) of the high temperature heating circuit ( 5 ) is designed as a 3-way mixer with two inputs and one output. Control or regulation according to claim 1, characterized in that the upstream mixing device ( 32 ) of the high temperature heating circuit ( 5 ) is a multi-way mixer having three or more inputs and an output, wherein in each operating state at least one input and at most two consecutive of the inputs are opened to the output in a certain mixing ratio. Control or regulation according to claim 1 and one of claims 2 and 3, characterized in that the order of opening of the inputs of the upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) the heights of the buffers connected to them ( 2 ) from bottom to top. Control or regulation according to claims 1 to 4, characterized in that the lowest connection ( 23 ) of the buffer memory ( 2 ), over at least parts of the coldest low-temperature cycle returns ( 50 ) in the buffer memory ( 2 ), not with any input of the upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) connected is. Control or regulation according to one or more of claims 1 to 5, characterized in that the upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) a variable in their performance heat source ( three ) is connected downstream as a peak load boiler. Control or regulation according to claim 6, characterized in that the heat generation of the heat source ( three ) is activated only when the last opening input of the upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) to the top terminal connected to it 20 . 21 or 22 ) of the buffer memory ( 2 ) is completely open. Control or regulation according to claims 6 and 7, characterized in that from the flow of the heat source ( three ) Heat in the topmost port of the buffer ( 2 ), which lies above the uppermost buffer connection, which is connected to the last-opening input of the upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) connected is. Control or regulation according to claim 8, characterized in that when heat is recirculated from the heat source ( three ) into the topmost port of the buffer memory ( 2 ) the last opening input of the upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) to the top of the mixing device ( 32 ) connected to the buffer memory ( 2 ) is open. Control or regulation according to one or more of claims 1 to 9, characterized in that by the upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) and its downstream heat source ( three ) is supplied only a single heating circuit and therefore no other low-temperature heating circuits are available. Control according to one or more of claims 1 to 10, characterized in that the heat source is used as a circulating water heater ( three ) with a built-in circulation pump ( 33 ) is trained. Control or regulating device according to claim 11, characterized in that the return of heat to the uppermost connection ( 20 ) of the buffer memory ( 2 ) with one in the lead ( 26 ) of the circulating water heater ( three ) reversing valve ( 25 ) he follows. Control or regulation according to one or more of claims 1 to 12, characterized in that one in the return ( 30 ) of the circulating water heater ( three ), integrated in its housing switching valve as an upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) is operated. Control or regulation according to one or more of claims 1 to 12, characterized in that two in the return ( 30 ) of the circulating water heater ( three ) integrated circulating pumps as an upstream mixing device ( 32 ) of the high-temperature circuit ( 5 ) operate. Method for controlling a heating system ( 1 ) with a buffer memory ( 2 ) derived from both a regenerative first heat source ( 18 ) as well as from a arranged with an internal return side of her mixing valve ( 32 ) and one of her downstream arranged circulation pump ( 33 ) provided second heat source ( three ), in particular a circulating water heater, can be heated, furthermore with a first heating branch ( 5 ), in particular high-temperature heating branch and preferably one via a mixing valve device ( 4 ) fed further heating branch ( 6 ), in particular Niedertemperaturheizzweig, wherein the heating branches or the 5 . 6 ) alternatively with the buffer memory ( 2 ), in which actual values of the flow temperature of the second heat source ( three ), the flow temperature of at least one of the heating branches ( 6 ) and the outside temperature can be taken into account as a setpoint for comparison, and in the case of a control deviation in the sense of a greater heat requirement, first the internal mixing valve disposed on the return side (FIG. 32 ) is adjusted and after reaching its end position thereafter the heat delivery of the second heat source ( three ) is increased. Method for controlling a heating system ( 1 ) with a buffer memory ( 2 ) derived from both a regenerative first heat source ( 18 ) as well as from a arranged with an internal return side of her mixing valve ( 32 ) and one of her downstream arranged circulation pump ( 33 ) provided second heat source ( three ), in particular a circulating water heater, can be heated, furthermore with a first heating branch ( 5 ), in particular high-temperature heating branch and preferably one via a mixing valve device ( 4 ) fed further heating branch ( 6 ), in particular Niedertemperaturheizzweig, wherein the heating branches or the 5 . 6 ) are alternatively connected to the buffer memory, wherein the actual values of the flow temperature of the second heat source ( three ), the flow temperature of at least one of the heating branches ( 6 ) and the outside temperature are taken into account as a setpoint for comparison and in the case of a control deviation in the sense of a smaller heat requirement, first the heat supply of the second heat source ( three ) and after the second heat source has been shut down ( three ) the internal mixing valve ( 32 ) is adjusted. Method for controlling a heating system ( 1 ) according to claim 1 or 2, wherein for each of the heating branches ( 5 . 6 ) is derived from the actual value of the outside temperature, a setpoint for the control, which are all compared with each other, wherein the maximum value of the setpoints of the control is switched. Method for controlling a heating system ( 1 ) according to one of claims 1 to 3, in which the reference values to be compared are switched over in a time-dependent manner. Heating system ( 1 ) with a buffer memory ( 2 ) derived from both a regenerative first heat source ( 18 ) as well as from a mixing valve arranged with an internal return side ( 32 ) and one of her downstream arranged circulation pump ( 33 ) provided second heat source ( three ), in particular circulating water heater, can be heated, furthermore with a first heating branch ( 5 ), in particular high-temperature heating branch ( 5 ) and preferably one via a mixing valve device ( 4 ) fed further heating branch ( 6 ), in particular low-temperature heating branch ( 6 ), in which an external flow switching valve ( 25 ) in the supply line ( 26 ) of the first heat source ( three ) is arranged, which the supply line ( 26 ) either with a highest connection ( 20 ) of the buffer memory ( 2 ) or with a to the input of one of the heating branches ( 5 ) leading line ( 35 ) connects.