EP4007832A1 - Procédé pour faire fonctionner un système de circulation thermorégulé ainsi que système de circulation thermorégulé - Google Patents

Procédé pour faire fonctionner un système de circulation thermorégulé ainsi que système de circulation thermorégulé

Info

Publication number
EP4007832A1
EP4007832A1 EP19868154.6A EP19868154A EP4007832A1 EP 4007832 A1 EP4007832 A1 EP 4007832A1 EP 19868154 A EP19868154 A EP 19868154A EP 4007832 A1 EP4007832 A1 EP 4007832A1
Authority
EP
European Patent Office
Prior art keywords
temperature
water
line
section
value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19868154.6A
Other languages
German (de)
English (en)
Other versions
EP4007832B1 (fr
Inventor
Roberto BAWEY
Patric OPITZ
Olaf HEINECKE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ltz Zentrum Fuer Luft und Trinkwasserhygiene GmbH
Original Assignee
Ltz Zentrum Fuer Luft und Trinkwasserhygiene GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ltz Zentrum Fuer Luft und Trinkwasserhygiene GmbH filed Critical Ltz Zentrum Fuer Luft und Trinkwasserhygiene GmbH
Publication of EP4007832A1 publication Critical patent/EP4007832A1/fr
Application granted granted Critical
Publication of EP4007832B1 publication Critical patent/EP4007832B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • E03B7/045—Domestic or like local pipe systems diverting initially cold water in warm water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps

Definitions

  • the invention relates to a method for operating a circulation system and a circulation system, each according to the features of the preambles of the independent claims.
  • DIN EN 806 and VDI guideline 6023 for drinking water installations in buildings require the temperature of the cold drinking water (PWC) in all pipes of the installations to be limited to a maximum of + 25 ° C at all times.
  • PWC cold drinking water
  • the water temperature for cold water points should not exceed + 25 ° C 30 seconds after a tapping point has been fully opened.
  • the cold water installation must be designed in such a way that the drinking water in all pipes of the installation is regularly renewed under normal operating conditions.
  • VDI guideline 6023 also includes the recommendation to keep the temperature of the drinking water below + 25 ° C if possible. It goes without saying that a temperature limitation of the water is often also seen as necessary for other water installations, for example for installations of industrial water.
  • heat-emitting media e.g. heating pipes, domestic hot water (PWH) and domestic hot water - circulation systems (PWH-C), supply air and exhaust air ducts, lamps
  • PWH domestic hot water
  • PWH-C domestic hot water - circulation systems
  • a cooled circulation system is already known from EP 1 626 034 A1, in which a controlled addition of a disinfectant to the water is provided.
  • a method for operating a circulation system with a heat accumulator, a circulation pump, a control unit and at least two lines and with an otherwise unknown pipe network structure is known.
  • the strands which each have a valve that can be adjusted via a motor drive, correspond to temperature sensors that are arranged between the strands in front of each mixing point.
  • the motor drives and / or the circulation pump are connected to the control unit in a wireless or wired manner for data exchange.
  • the control unit is designed to carry out thermal hydraulic balancing and thermal disinfection by limiting the stroke of measured temperatures and / or adjusting the pump output as a function of a difference between an actual temperature value and a target temperature value.
  • a drinking and industrial water supply device for a building with a house connection for cold water, which is connected to the public supply network comprises at least one circulation line which is provided with a pump and leads to at least one consumer.
  • a heat exchanger is provided in the circulation line to extract heat from the water.
  • EP 3 159 457 A1 also describes a drinking and service water supply device of the type known from DE 20 2015 007 277 U1, the heat exchanger being formed by a latent heat accumulator and a motor-operated flushing valve provided in the circulation line, which is connected to a control device in terms of control is has.
  • the flushing valve is arranged between the latent heat accumulator and an opening of the house connection in the circulation line and is arranged downstream of the latent heat accumulator in the flow direction.
  • the operating temperatures change in the process, with a memory or heater being used instead of a cooling device.
  • the temperatures in the hot water network should be between 60 ° C at the storage tank outlet and 55 ° C at the storage tank inlet.
  • heat losses lead to a temperature decrease in the hot water network.
  • the object of the present invention is therefore to achieve in an effective manner that the water temperature remains in a desired temperature range for all sections and for all times during the operation of a circulation system.
  • the invention therefore also includes the case that instead of a cooling device, a temperature control device, for example a heat exchanger, is used that can heat or cool the water.
  • a temperature control device for example a heat exchanger
  • the temperature control device is preferably designed as a heating device.
  • the method according to the invention relates in particular to a circulation system with a temperature control device with an input port and an output port for cooling water and with a line system with several strands, which have one or more sections with a given heat coupling with an environment and are connected by means of nodes, wherein one or more of the lines of the line system are designed as a feed line, at least one individual feed line connected to a withdrawal point and at least one line designed as a circulation line is connected to the feed line or lines.
  • the method according to the invention for operating the circulation system is characterized in that, based on a temperature start value T MA * ⁇ T soll and a volume flow start value V z * for the first section connected to the output port, a temperature change of the water between the start area and the end area corresponds accordingly a model of the axial temperature change is determined, a temperature change of the water between the start area and the end area for each given further section connected to the first section is determined according to the model of the temperature change, under the boundary condition that the water temperature in the start area of the given section is equal to the water temperature is in the end area of the section to which the given section is connected in the direction of flow of the water and the value T a of the water temperature and the value V z of the volume flow at the output port are selected so that in the end area of each section track the water temperature of the circulation system T ME ⁇ T soll and at the inlet port the water temperature T b ⁇ T soll with T soll - T b ⁇ q, where q> 0 is a predetermined value.
  • the determination preferably consists of a calculation according to the model of the axial temperature change of the water between the start area and the end area of the section, that is to say of the corresponding line section, based on heat absorption from the surroundings of the section.
  • the entire system of sections is successively run through and the temperature in the entire system is therefore calculated.
  • the value T a of the water temperature and the value V z of the volume flow at the output port are determined in the method, in which it is achieved that the water temperature in the end area of each section of the circulation system T ⁇ T soll and at the inlet port the water temperature T b ⁇ T soll with T soll - T b ⁇ q, where q> 0 is a predetermined value, determined, preferably calculated, by modeling the temperature and volume flows of the water circulating in the pipe system . This is preferably done for a state with a stationary Vz.
  • the temperature control device and possibly a circulation pump of the circulation system are then set so that the water temperature and the volume flow assume the values T a and the value V z determined .
  • a temperature is set at an output port, temperature changes are calculated based thereon and used for modeling according to the specifications of the characterizing part of claim 1.
  • the advantage of calculating is that no sensor is required to measure something, and that influencing variables can be assessed and varied and possibly also made predictions.
  • the calculation offers the advantage that fewer measuring points are required and the system is less susceptible to vibrations overall.
  • the regulation according to the invention takes place by means of a control intervention at the output port, but the regulator design is based on the entire water pipe system with distributed parameters with a calculation of a large number of temperatures TME. Basically, only one controller and only one temperature setting are required to provide the temperature Ta. The following formula applies both to the temperature drop in a hot water network and to the temperature rise in a cold water network.
  • the invention therefore also includes the analogous case of a hot water network, a storage tank or heater being used instead of a temperature control device.
  • the o.g. Formula also valid in a cold water network if the temperature of the water is higher than the ambient temperature.
  • the invention includes the case that a heat exchanger is used instead of a temperature control device, which can heat or cool the water.
  • line refers to a line consisting of one or more sections between two nodes, between which there is no other node.
  • the strands are connected by knots.
  • the boundary condition that the water temperature in the start area of the given section is equal to the water temperature in the end area of the section to which the given section is connected preferably relates only to the sections of a line.
  • the temperature and size of the volume flow flowing out of a node into a subsequent section depends on the temperatures and sizes of the incoming volume flows.
  • the invention preferably assumes that these are given by the design of the line system.
  • the distribution of the volume flows flowing out of a node to the various outgoing lines or sections is preferably assumed in the invention to be given by the design of the line system.
  • Mixing temperatures in the case of strand unification and the temperatures in the case of strand division are preferably calculated on the basis of a percentage volume flow distribution.
  • the line system is assumed to be given, it being understood that the line system is designed in accordance with the specifications of DIN 1988-300 for the design of pipe networks, whereby in particular certain nominal widths of the PWC (Potable Water Cold) lines and thermal values Coupling of the circulating water with the environment are prescribed. It goes without saying that, in general, the pipe network designs prescribed or recommended in other countries or regions can also be observed.
  • PWC Personal Water Cold
  • the highest value permissible according to the design of the line system is preferably selected as the volume flow start value V z * . This value is reduced until the temperature of the circulating water is close to T setpoint , since the temperature of the circulating water increases as the volume flow decreases and the temperature at the inlet port therefore increases.
  • the value is T MA varies * and the highest value T a selected water temperature, wherein at the input port, the water temperature T b ⁇ T Soll with T - T b ⁇ q where q> 0 is a predetermined value.
  • T soll - T b ⁇ q ensures that the water temperature in the circulation system is not set too cold and that the system is operated in an energetically ineffective manner.
  • q lies in a range between 1 ° C and 5 ° C, but can also lie in a different range.
  • the determination of the temperature change of the water between the start and end area of each section can take place in accordance with models that are known per se, for example by means of simulation calculations or also corresponding known formulas.
  • the circulation system is preferably operated in a state in which no water is withdrawn or absorbed, because in this state a higher level of heating of the water is to be expected than in a state in which water is withdrawn and thus, when using the parameters T a and V z determined according to the method, a safety margin from a state with an undesirably high water temperature is ensured.
  • T a and V z determined by means of the method are advantageously used to model and operate a given circulation system in which the pipe system is designed in accordance with the statutory provisions with regard to nominal widths and thermal coupling of the circulating water with the environment the legal requirements regarding the temperature of the drinking water in the circulation system are met.
  • T a and V z determined by means of the method are advantageously used to design the temperature control device with regard to its cooling capacity in a given circulation system in which the line system is designed in accordance with the statutory provisions with regard to nominal widths and thermal coupling of the circulating water with the environment determine. Furthermore, the design of a circulation pump can be determined with regard to its pumping capacity.
  • a line downstream of an extraction point in the circuit in which water runs from the output port of a temperature control device back to the input port of the temperature control device is referred to as a circulation line of the circulation system if no other extraction point is connected to this line.
  • node is used for a line element to which lines are connected. Either at least two volume flows can enter a node and exactly one volume flow can flow out or precisely one volume flow can flow in and at least two volume flows can flow out.
  • a node corresponds to a branch.
  • exactly two volume flows enter and one volume flow into a node of the circulation system, or exactly one volume flow enter and exactly two volume flows exit, as is the case with a T-piece, for example.
  • Kirchhoff's law applies to the nodes of the circulation system, according to which the sum of the inflowing volume flows is equal to the sum of the outflowing volume flows.
  • the outgoing volume flows are preferably divided into equally large outgoing volume flows at each node. It goes without saying that other divisions are also possible.
  • the temperature t m and the mass flow m m of the mixed water of the outgoing volume flow have the following relationship with temperature tk and mass flow mk of the colder or temperature tw and mass flow mw of the warmer flow are related:
  • ⁇ k temperature of colder water (° C)
  • m m mass / volume (flow) mixed water (kg; m 3 ; kg / h; m 3 / h or%)
  • m k mass / volume (flow) cold water (kg; m 3 ; kg / h; m 3 / h or%)
  • m w mass / volume (flow) hot water (kg; m 3 ; kg / h; m 3 / h or%)
  • the following parameters are preferably used to determine the temperature change in the water between the start and end of a section
  • T air ambient air temperature (° G)
  • k R heat transfer coefficient of the pipeline (W / (m * K))
  • m M mass flow of the water in the section (kg / s)
  • V M volume flow of the water in the section (m 3 / s)
  • a temperature change of the water between its starting range and can be advantageous for each section of the circulation system with a stationary volume flow their end area can be determined, the water temperature in the end area of a given section is selected to be equal to the water temperature in the start area of the section connected to the given section in the direction of flow of the circulating water. Therefore, the temperature of the water in the end area of the respective section can be determined for each section of the circulation system based on the temperature in the initial area.
  • the temperature of the circulating water can advantageously be determined on the basis of a temperature at the output port with a steady volume flow for each section, i.e. also a value T a of the water temperature at the output port can be determined as the starting temperature of the section following the output port, in which for the end areas all Sections where the water temperature is T ME ⁇ T soll .
  • the values T a and V z are determined in an iterative approximation method, in which starting from a temperature start value T MA * ⁇ T soll and a volume flow start value V z * for the first section connected to the output port, for each given section the water temperature T ME is calculated in its end area, the water temperature T MA 'in the start area of the next connected section equal to the water temperature T ME in the end area of the given section as selected is.
  • the partial sections are designed to be axially uniform over the length between their starting area and their end area with regard to their thermal coupling with the environment, and therefore do not change axially. This enables the calculations to be simplified.
  • T MA water temperature in the initial area (° c)
  • T ME water temperature in the end area (° G)
  • T air ambient air temperature (° C)
  • V M volume flow of the water in the section (m 3 / s)
  • p M density of the water (kg / m 3 )
  • equations 1-4 are used to determine the temperature changes and the heat gain in the water as a result of the temperature difference to the environment.
  • Equation 1 is used for the thermal resistance in equation 2 and thus the thermal resistance is determined.
  • Equation 2 the heat transfer coefficient Equation 3 is calculated.
  • the heat transfer coefficient is a central component of equation 4 for calculating a temperature at the end of a section.
  • a water temperature can also be determined for any point in the pipe network under consideration.
  • the iterative approximation method is preferably the known Excel target value search; see Excel and VBA: Introduction with practical applications in the natural sciences by Franz Josef Mehr, Maria Maria Maria Mehr, Wiesbaden 2015, Section 8.1.
  • key data of the pipeline system including the above-mentioned parameters of the sections are entered into the program and the volume flow V z at which the target drinking water temperature T b is reached is determined by means of the target value search; for example as follows
  • the calculated volume flow V z at which a target temperature Tb of 20 ° is reached at an inlet temperature T a of 15 ° C., is indicated in line MT4.
  • a circulation pump is integrated into the circulation system, with which a desired volume flow can be set.
  • a connection line is a line between a supply line and a drinking water installation or the circulation system.
  • a consumption line is a line that provides water from the main shut-off valve to the tapping connections and, if necessary, routes it into apparatus.
  • a collective feed line is a horizontal consumption line between the main shut-off valve and a riser.
  • a rising (falling) line leads from floor to floor and from which the floor lines or individual feed lines branch off.
  • a floor line is the line that branches off from the rising (falling) pipe within a floor and from which individual feed lines branch off.
  • a single feed line is the line leading to an extraction point. In one embodiment of the invention it is provided that at least one feed line is connected to at least one ring line.
  • At least one branch of the circulation line branches off from the at least one feed line.
  • At least one branch of the at least one circulation line branches off from the at least one ring line.
  • the at least one feed line comprises at least one riser line and / or one floor line.
  • the at least one feed line comprises a collecting line which is connected to a connection to a water supply network.
  • connection is connected to at least one connection line and / or at least one consumption line.
  • At least one static or dynamic flow divider is arranged in the at least one feed line and / or the at least one ring line, with which a tapping point for water is preferably connected.
  • a percentage distribution of the volume flows is preferably made 95% at the outlet and 5% at the passage.
  • thermal energy is transferred from the circulating water to another material flow, preferably by means of a heat exchanger, whereby an optimization of the cooling process by suitable choice of the other material flow, for example propane , and a reduction in the energy required to operate the cooling device can be achieved.
  • the cooling device is thermally coupled to a cold generator, preferably a heat pump, a cold water set or a cold supply network, whereby a reduction in the energy required for the cooling process can also be achieved.
  • a cold generator preferably a heat pump, a cold water set or a cold supply network
  • the determination of a consumption characteristic of the circulation pump as a function of the conveyed volume flow of the circulation pump and the determination of a consumption characteristic of the cooling device as a function of a water temperature at the output port and the setting of a volume flow V z and a water temperature T a at the output port so that the power consumption of the circulation pump and cooling device assumes a relative or absolute minimum value, which improves the energy efficiency of the method.
  • the temperature T is a value of 20 ° C +/- to selected 5 ° C and selected for the water temperature T a at the output port a value of 15 ° C +/- 5 ° C becomes.
  • At least a section of the line system is designed as an external circulation line, since in particular external circulation lines are mostly built into already existing circulation systems.
  • At least one section is designed as an inliner circulation line, since these are often installed in newer or new circulation systems.
  • FIG. 1 a a schematic representation of a circulation system
  • Figure 1b an illustration of a circulation system according to the invention
  • Figure 2 another embodiment of a circulation system
  • FIGS. 3a-3c further embodiments of a circulation system
  • Figure 4 a further embodiment of a circulation system
  • Figure 5 a further embodiment of a circulation system
  • Figure 6 another embodiment of a circulation system
  • FIG. 7 a further embodiment of a circulation system
  • FIG. 8 a further embodiment of a circulation system
  • FIG. 9 another embodiment of a circulation system according to the invention
  • FIG. 10 another embodiment of a circulation system according to the invention
  • all the lines shown between nodes and between nodes and input port as well as nodes and output port consist of one or more sections, as defined above.
  • Feed line 4a is connected to an output port 12b of a cooling device 12.
  • the cooling device 12 has connections on the refrigeration circuit side and a pump 13 on the refrigeration circuit side.
  • a branch to a collecting line 4 a connection line to a connection 1 to a water supply network and a consumption line 3 is provided, the latter and the connection line not belonging to the circulation system. There is therefore no volume flow division at node K1.
  • the collective feed line 4 is connected to a riser line 5 which opens into a node K2.
  • the node K2 branches into a floor line 6 and a riser 5, which opens into a node K3 and at which a branch to a floor line 6 and a riser 5 takes place, is connected to a floor line 6 which opens into a node K4.
  • the node K2 is connected to a node K6 via a floor line 6.
  • the node K3 is connected to a node K5 via a floor line 6.
  • TS1 and TS2 Two sections TS1 and TS2 explicitly identified as such are connected via the node K4, TS1 section of the floor line 6 and TS2 representing a circulation line. At node K4, there is also a branch via a single feed line 7 to an extraction point 9. For the sake of simplicity, the individual feed lines and tapping points connected to nodes K2 and K3 are not provided with reference symbols. Since that
  • Circulation system according to the invention for carrying out the method according to the invention is operated in a state in which there is no water withdrawal, in the following those nodes that are assigned to withdrawal points are excluded from consideration and, with the exception of node K4, are accordingly not shown in the drawings
  • the section TS2 is connected to a vertical circulation line 10a, which opens into the node K5.
  • the node K5 is connected to a circulation line 10a which opens into the node K6.
  • the node K6 is connected to a vertical circulation line 10a, which is connected to a horizontal circulation line 10a, which in turn is connected to the circulation pump 10b via a vertical circulation line.
  • the inventive circulation system for warm drinking water PWC shown in FIG. 1b has an analogous structure to the system shown in FIG. 1a, but the reference number 12 denotes a heating device which is connected to the input port 12a via a connection line 4 'for cold drinking water PWC.
  • the output port 12b is connected to a riser 5.
  • Reference number 9 designates the last tapping point for warm water PWH.
  • the heating device is connected to the input port 12a via the circulation pump 10b.
  • the heating device has connections on the heating circuit side and a pump 13 on the heating circuit side.
  • a valve is provided at node K1 in FIG. 1a, which can temporarily block the water supply from connection 1, whereby drinking water can be heated, reference numeral 12 denoting a heating device or a temperature control device.
  • the circulation system shown in FIG. 2 has an analogous structure to the system of FIG. 1 a, but 6 ring lines are provided in the floor lines, a reference number 8 being used only for the top ring line shown in FIG. 2 for simplification.
  • An optional flow divider 8a is assigned to the ring line 8.
  • Ring lines are assigned to nodes K21 to K32. It goes without saying that such
  • FIG. 3 shows a further system with nodes K31 to K34, in which, however, the circulation lines 10a opening into nodes K34 and K35 are routed parallel to the floor lines 6 emanating from nodes K32 and K33.
  • an optional decentralized cooling device 14 with an input port 14a and an output port 14b is arranged in the uppermost floor line 6, with existing connections of a cold-side circuit as well as a
  • Cooling devices 14 are mandatory, as shown in Figure 3b.
  • cooling devices can be provided in the risers 5 or the floor pipes of the embodiments of FIGS. 1, 2 and 4 to 8, for example as in FIG. 3 with a cooling device 12 '.
  • FIG. 4 shows a system with nodes K41 to K51 as in FIG. 3, but with the
  • FIG. 5 shows a system with nodes K51 to K55, in which circulation lines 10 are routed parallel to the risers 5 connected to nodes K52, K53.
  • FIG. 6 shows a system with nodes K61 to K69b, ring lines being provided between nodes K63, K64, K66, K67 and K68, K69.
  • FIG. 7 shows a system with nodes K71 to K75, with risers 5 being connected to nodes K72 and K73.
  • FIG. 8 shows a system with nodes K81 to K89b analogous to that in FIG. 7, but with ring lines arranged between nodes K89a, K89b, K88, K89 and K84 and K85.
  • Figure 9 shows a system with a device 12 ', which via a line 2' with the
  • Inlet port 12a is connected to a water supply 1.
  • the output port 12b is connected to the node K91 and risers 5 by a collecting line 4a.
  • the circulation line 10a is connected to the input port 12a ‘.
  • Figure 10 shows a system with a device 20, which via a line 2 'with the
  • Inlet port 20a ' is connected to a water supply 1.
  • the output port 20b is connected by a collecting line 4 to the node K101 and risers 5.
  • the circulation line 10a is connected downstream of the output port 20b ‘.
  • the device 20 can be designed as a cooling device, heating device or temperature control device.
  • the system further comprises the device 12, the output port 12b of which has a
  • Manifold 4a connected to node K101 and risers 5.
  • the circulation line 10a is connected to the input port 12a.
  • the device 12 can be designed as a cooling device, heating device or temperature control device.
  • inventions shown in Figures 1, 3, 5, 7 can also only allow partial areas to circulate. So the sections can also z. B. represent installations in apartments that are not allowed to circulate due to various requirements (billing of water consumption). An exchange of water to maintain the desired temperature would be possible here using automatic washing machines.
  • the method according to the invention is carried out in the systems of FIGS. 1 to 8 in the manner described above, starting from a temperature start value T MA * ⁇ T soll and a volume flow start value V z * for the first connected to the output port (12b) Section a temperature change of the water between the starting area and the end area is determined according to a model of the temperature change.
  • a temperature change of the water between the start area and the end area for each given further section is calculated according to the model of the temperature change determined, under the boundary condition that the water temperature in the start area of the given section is equal to the water temperature in the end area of the section to which the given section is connected.
  • the above-described model of the axial temperature change is preferably used, according to which the water temperature T ME in the end region of a section of length L is determined using the formula
  • the value T a of the water temperature and the value V z of the volume flow at the output port 12b are chosen so that the water temperature T ME ⁇ T soll in the end area of each section of the circulation system and the water temperature T b ⁇ T soll with T at the inlet port 12a should - T b ⁇ q, where q> 0 is a predetermined value.
  • circulation pump 10b is not always operated with a constant volume flow, that is to say regardless of whether the port inlet temperature 12a has exactly the set value or is even below it.
  • the delivery volume flow of the circulation pump 10b could be reduced. This can be done automatically, for example, in a temperature-controlled manner. The result would be energy savings.
  • the delivery volume flow of the pump 13 can also be reduced in a temperature-controlled manner.
  • the flow temperature in the cooling circuit could also be adjusted. The result would be energy savings.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Hydrology & Water Resources (AREA)
  • Health & Medical Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Air Conditioning Control Device (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Pipeline Systems (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Control Of Temperature (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Heat Treatment Of Articles (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un système de circulation (10) pourvu d'un dispositif de chauffage présentant un orifice d'entrée et un orifice de sortie pour thermoréguler de l'eau et d'un réseau de conduites pourvu de plusieurs branches, lesquelles présentent une ou plusieurs sections de trajets en couplage thermique donné avec un environnement et sont reliées au moyen de nœuds, une ou plusieurs des conduites du réseau de conduites étant réalisées sous la forme d'une conduite de départ (4, 5, 6), au moins une conduite d'alimentation individuelle (7) reliée à un point de prélèvement (9) et au moins une conduite réalisée sous la forme d'une conduite de circulation (10a) étant reliées à la ou aux conduites de départ (4, 5, 6). Le procédé présente les étapes - de réglage d'une température de l'eau à l'orifice de sortie sur une valeur Ta au moyen du dispositif de chauffage - de réglage d'un débit volumique à l'orifice d'entrée sur une valeur Vz et présente les étapes suivantes - la détermination, en particulier le calcul, d'une variation de température de l'eau entre la zone initiale et la zone terminale en fonction d'un modèle de la variation axiale de température pour la première section de trajet raccordée à l'orifice de sortie, à partir d'une valeur de départ de température TMA* et d'une valeur de départ de débit volumique Vz*, - de détermination, en particulier de calcul, d'une variation de température de l'eau entre la zone initiale et la zone terminale pour chaque autre section de trajet donnée en fonction du modèle de la variation de température, à la condition secondaire que la température de l'eau dans la zone initiale de la section de trajet donnée soit la même que la température de l'eau dans la zone terminale de la section de trajet à laquelle la section de trajet donnée est raccordée et - de sélection de la valeur Ta de la température de l'eau et de la valeur Vz du débit volumique à l'orifice de sortie, de telle sorte que, dans la zone terminale de chaque section de trajet, la température de l'eau TME dans un intervalle de température prédéfini se situe autour de Tsoll, en particulier qu'à l'orifice d'entrée (12a, 14b), la température de l'eau Tb < Tsoll soit obtenue, avec Tsoll - Tb < Θ, Θ > 0 étant une valeur prédéfinie. L'invention a en outre pour objet un système de circulation permettant de mettre ledit procédé en œuvre.
EP19868154.6A 2018-05-15 2019-11-21 Procédé de fonctionnement d'un système de circulation et système de circulation Active EP4007832B1 (fr)

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DE102018111579 2018-05-15
PCT/EP2019/062547 WO2019219785A1 (fr) 2018-05-15 2019-05-15 Procédé de fonctionnement d'un système de circulation et système de circulation
PCT/EP2019/000317 WO2020228921A1 (fr) 2018-05-15 2019-11-21 Procédé pour faire fonctionner un système de circulation thermorégulé ainsi que système de circulation thermorégulé

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CY1124377T1 (el) 2022-07-22
PT3601688T (pt) 2021-06-30
CA3140513A1 (fr) 2020-11-19
US20220205647A1 (en) 2022-06-30
AU2019446081A1 (en) 2022-01-06
HUE055249T2 (hu) 2021-11-29
EP3601688B1 (fr) 2021-03-24
PL3601688T3 (pl) 2021-11-29
EP4007832B1 (fr) 2024-05-08
BR112021022701A2 (pt) 2022-01-18
DK3601688T3 (da) 2021-06-28
SI3601688T1 (sl) 2021-09-30
IL288025A (en) 2022-01-01
LT3601688T (lt) 2021-09-10
SG11202112646XA (en) 2021-12-30
MX2021013831A (es) 2022-03-22
JP2021523314A (ja) 2021-09-02
HRP20210994T1 (hr) 2021-09-17
CN112585324A (zh) 2021-03-30
CN112585324B (zh) 2023-01-03
WO2020228921A1 (fr) 2020-11-19
SG11202011254SA (en) 2020-12-30
US20230130061A1 (en) 2023-04-27
WO2019219785A1 (fr) 2019-11-21
EP3601688A1 (fr) 2020-02-05
RS62102B1 (sr) 2021-08-31
ES2879912T3 (es) 2021-11-23
US20210189701A1 (en) 2021-06-24
IL278651B (en) 2022-06-01
KR20220062229A (ko) 2022-05-16
MX2020012082A (es) 2021-06-23
AU2019270362A1 (en) 2021-01-07
BR112020023043A2 (pt) 2021-02-02
US11525247B2 (en) 2022-12-13
JP7393012B2 (ja) 2023-12-06
SA520420530B1 (ar) 2022-10-25
JP2022533083A (ja) 2022-07-21
KR20210029717A (ko) 2021-03-16
CA3100102A1 (fr) 2019-11-21

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