FR3017446A1 - MODULAR DEVICE FOR HEATING AND DISPENSING HOT WATER - Google Patents

Abstract

The present invention relates to a modular device (100) for heating and distributing hot water, intended to interface between a network (RECS) centralized hot water (DHW) with return loop for a set (BAT) of individual dwellings (APT) and a heating network (RC) of an individual dwelling (APT) belonging to said assembly (BAT), comprising: - a water / water type heat exchanger (10) comprising a primary circuit (11) ) fed by a stream of domestic hot water (DHW) and a secondary circuit (12) fed by an incoming water flow from said heating network (RC), said primary circuit (11) and the secondary circuit (12) being arranged together so that the flow of domestic hot water (DHW) heats the heat flow of the heating network by thermal transfer, and - a bypass circuit (21) comprising a mixer (20) connected to a heating network. Sanitary Cold Water (REFS) and configured to dispense and regulate water (ECS, EFS) at a specified temperature.

Description

TECHNICAL FIELD The present invention relates to the combined areas of heating and distribution in domestic hot water.

The present invention relates, more particularly, to a modular heating and hot water distribution device for equipping an individual dwelling supplied with domestic hot water by a centralized network. The present invention thus has many advantageous applications in the field of building, allowing the installation of such a device in each individual housing to control and optimize energy consumption and reduce the final bill. Other advantageous applications may of course be considered in the context of the present invention. By individual housing within the meaning of the present invention, it is to be understood throughout the following description any type of housing forming part of the same building under which there is a plurality of housing; for example, it may be an apartment, a hotel room or a room in a retirement home. PRIOR ART More and more attempts are being made to reduce the energy consumption of buildings; in particular, HEQ buildings are referred to as "High Environmental Quality". This has become a major issue for both economic and ecological reasons. The present invention is part of this problem and aims to optimize the energy consumption relative to individual heating by exploiting existing heat sources in a building, such as for example domestic hot water circulating in the centralized network of a building. collective building consisting of several individual dwellings. It is known from the state of the art, and particularly documents FR2980557 or FR2980559, systems in which hot water from a central heating network is used to heat domestic hot water. More particularly, in FR2980557, there is provided a device for the production of individualized sanitary hot water, from the centralized boiler room of a multi-family building. According to this document, the proposed device comprises a domestic hot water tank. , having a cold water inlet and a hot water outlet, equipped inside with an exchanger. When the flask is filled with sanitary water, the exchanger is in contact with this water. For its part, the exchanger is provided with a heating water inlet and a heating water outlet. According to this document, a distributor divides the incoming flow of heating water between the inlet of the exchanger and a secondary circuit passing through a radiator.

The opening of a three-way valve makes it possible to modulate the respective flow rates of the heating water passing through the exchanger and the heating water passing through the radiator. Thus, with such a system, the hot water of the centralized heating network provides heating of domestic hot water. The solution proposed in these documents offers an energy saving by eliminating the centralized hot water network.

In any event, neither this document FR2980557 nor the document FR2980559 provides for the removal of the centralized hot water heating network and the use of domestic hot water from a centralized network for heating water. an individual heating network for individual housing. The documents WO2004070279 and DE20218316 each propose a solution in which the domestic hot water produced by a boiler recirculates through a water / air heat exchanger to heat a volume such as for example a room of an apartment. The solution proposed in these documents, while interesting, is not entirely satisfactory. It only allows to heat a single room; such a solution adapts for example to the heating of a bathroom that must be heated in summer when the central heating network does not work. In any case, this solution is part of an individual sanitary hot water network, not a collective water system. OBJECT AND SUMMARY OF THE PRESENT INVENTION The present invention aims at improving the situation described above.

One of the objectives of the present invention is to provide a simple equipment to install in a collective building to significantly reduce energy consumption relative to the heating of an individual dwelling by using hot water from a centralized network.

This is made possible by the present invention which consists in particular of a modular device for heating and distributing hot water. According to the present invention, such a device is intended to interface between a centralized hot water network for a set of individual dwellings and an individual heating network of an individual dwelling belonging to said assembly. Preferably, the centralized hot water network comprises a return loop. Advantageously, the device according to the present invention comprises a water / water type heat exchanger having a primary circuit and a secondary circuit.

According to the present invention, the primary circuit is intended to be fed by a flow of domestic hot water entering from the centralized hot water network; and the secondary circuit is intended to be fed by an inflow of incoming water from the individual heating network of the individual dwelling. Advantageously, the primary circuit and the secondary circuit are arranged together so that the flow of domestic hot water heat by heat transfer the water flow of the individual heating network. Advantageously, the device according to the present invention further comprises a bypass circuit which preferably comprises a mixing valve including thermostatic, connected to a centralized sanitary cold water network; the bypass circuit is further configured to dispense and regulate the sanitary water to a predetermined temperature. Preferably, this branch circuit is positioned upstream of the input of the primary circuit of the heat exchanger. This provides a modular device that integrates easily into the installations of collective buildings by positioning itself between the centralized hot water network and the individual heating network of an individual dwelling.

Once in place and connected to the networks, and thanks to the presence of an exchanger and a bypass circuit (possibly with a mixer), it is possible simultaneously to distribute the domestic hot water in the housing (possibly by controlling the temperature), and use this hot water to heat the water of the individual heating network. Such a modular device is particularly appreciated by installers who only have to interface the device between the two networks to allow both the distribution and the regulation of the temperature of the domestic water and the heating of the water of the water. individual heating network.

With such a system, in case of breakdown or problem, it is sufficient for the repairer to replace the module. Furthermore, the use of the centralized hot water network as a heating vector makes it possible to eliminate from collective buildings the presence of a centralized hot water heating network. The Applicant submits that the device according to the present invention is particularly interesting for the construction of new collective buildings, meeting environmental quality requirements. Preferably, the domestic hot water circulating in the network has a temperature between 50 and 60 ° C, preferably between 55 and 57 ° C. Advantageously, the device according to the present invention comprises an automatic flow stabilizer which is positioned upstream of the input of the primary circuit of the heat exchanger and downstream of the bypass circuit; this stabilizer is configured to adjust the water flow in order to balance the water distribution in the domestic hot water network.

It will be understood that the water flow rate in the primary circuit makes it possible to define the heating power of the exchanger. The presence of such a stabilizer integrated in the device also makes it possible to ensure the balancing of the collective distribution and looping network of domestic hot water, and at the same time avoids the installation of balancing valves on this one.

This stabilizer allows the installer to set up the module without affecting the installation. Advantageously, the automatic flow stabilizer is configured to guarantee a substantially constant flow rate in the primary circuit of the heat exchanger. As mentioned above, the stabilizer is sized according to the heating power of the device. In an advantageous embodiment in which the device offers a heating power substantially equal to 2 kW, the automatic flow stabilizer is configured to ensure a constant flow substantially equal to 350 liters per hour. Optionally, the device according to the present invention comprises a fault detection module having: a probe configured to measure the temperature of the water at the output of the primary circuit, and warning means configured to emit a warning signal of the light signal type, when the temperature measured by the probe is below a predetermined threshold temperature, preferably equal to 50 ° C. Thus, in the event of insufficient flow rate, detected by an outlet temperature that is too cold (for example less than 50 ° C.) at the primary of the heat exchanger, the detection module signals, for example by means of an indicator light, the fault of the looping of the domestic hot water network. Optionally, the warning means are further configured to issue a remote warning signal.

Advantageously, the device according to the present invention comprises flow control means which are positioned upstream of the secondary circuit of the heat exchanger; these regulating means are configured to regulate the flow rate of the flow of water entering the secondary circuit so as to adjust the temperature of the water for the heating network.

By regulating the flow of water in the secondary circuit, it is thus possible to adjust the heating temperature of the water of the heating network. In a variant, the flow control means comprise a three-way valve. In another variant, the flow control means comprise a variable flow pump.

Advantageously, the device according to the present invention comprises a control panel which is accessible for a user, and which is configured to control the regulation means. Preferably, the device according to the present invention further comprises a temperature probe cooperating with the control panel to determine, as a function of an ambient temperature measured by the probe and possibly of a desired heating temperature, the flow rate of the flow of water entering the secondary circuit. Advantageously, the device according to the present invention comprises a first counter configured to record the heat input supplied to the heating network by the device. This meter, which is preferably remote-readable (that is to say, remotely liftable), makes it possible to record the heat input supplied for the apartment by the device, or more specifically by the hot water network. . In other words, this counter makes it possible to calculate the energy gain provided by the device.

Advantageously, the heat exchanger is dimensioned so as to operate on a temperature regime compatible with temperature variations of the domestic hot water network (these temperatures varying between 50 and 60 ° C, preferably between 55 and 57 ° C ). These variations are of the order of about 5 ° C maximum.

Advantageously, the device according to the present invention comprises a water filling module of the heating network; this module is connected to the output of the secondary circuit of the heat exchanger and the sanitary cold water network, and has a backflow preventer configured to avoid any pollution of the sanitary cold water network in case of overpressure of the heating network.

Optionally, the filling module comprises a safety mechanism consisting in particular of an expansion tank and a safety valve. Preferably, the safety valve is set at 3 bars. Advantageously, the mixer is configured to regulate the temperature of the sanitary water in a temperature range substantially between 45 and 55 ° C, preferably substantially equal to 50 ° C. Advantageously, the device according to the present invention comprises a second counter, preferably remotely, which is configured to record the domestic hot water consumption. Correlatively, the present invention also relates to an installation for an individual housing assembly supplied with domestic hot water by a centralized network with return loopback. According to this installation, the heating of each individual dwelling is provided by an individual heating network. Advantageously, the installation according to the present invention comprises, for at least one individual housing, a modular heating and hot water distribution device as described above which is interfaced between the centralized hot water network. and the heating network associated with the at least one individual dwelling. The present invention also relates to the use of a modular device in an installation as described above, in which the domestic hot water circulates in the domestic hot water network at a temperature of between 50 and 60 ° C. preferably between 55 and 57 ° C. In the same way, the present invention relates to a use of the modular device in which the automatic flow stabilizer is sized according to the heating power of said device. In an advantageous mode, a device having a heating power substantially equal to 2 kW. In this mode, the automatic flow stabilizer is configured to ensure a constant flow of at least substantially equal to 350 liters per hour. It can also provide a use in which the heat exchanger is sized to operate on a temperature regime compatible with temperature variations of the hot water network, less than or equal to 5 °, upstream downstream of the primary circuit of the exchanger. Thus, by its various structural and functional aspects, the present invention makes it possible to remedy the various disadvantages stated in the state of the art by proposing a device in the form of a simple module to be installed which is interfaced between the centralized hot water network and the individual heating network of each individual dwelling; this device can be easily replaced in case of failure. Furthermore, this device fed by the hot water network from a centralized production allows to: a) manage the distribution of domestic hot water in an individual dwelling, by securing this distribution by a control of the temperature of the distributed water, b) use domestic hot water to heat the water of the individual heating network, and c) remove buildings from the centralized heating system such as centralized boilers which often consume a lot of energy. Brief description of the appended figures Other features and advantages of the present invention will emerge from the description below, with reference to FIGS. 1a-1b and 2 which illustrate an embodiment of this embodiment which is devoid of any limiting character and on which: Figures la and lb each show a schematic view of a modular device for heating and hot water distribution according to two embodiments of the present invention; and FIG. 2 represents a schematic view of a building comprising an installation having a plurality of modular heating and hot water distribution devices in accordance with either of FIGS. 1a and 1b. DETAILED DESCRIPTION OF AN EMBODIMENT OF THE INVENTION A modular heating and hot water distribution device as well as the installation associated therewith will now be described in the following with reference to FIGS. 2. In the example described here, and illustrated in Figure 2, the modular device 100 for heating and hot water distribution, which is the subject of the invention, will be described in the context of a building BAT collective such as a residence housing several individual apartments APT. Of course, those skilled in the art will understand here that this is an example among other examples, and that the device 100 according to the present invention can be integrated in any type of collective buildings such as for example a retirement home, hotel, etc.

For the record, the present invention aims to provide a solution that fits easily into the collective buildings and that allows both: - to manage the distribution of domestic hot water in the apartment, and - to reduce energy consumption on the heating of the apartment avoiding the installation of a collective heating network requiring a centralized boiler.

The hot water heating and distribution device 100 according to the invention is a modular device which is particularly easy to install; as shown in FIG. 2, this device is in the form of an individual station which simply interfaces with the domestic hot water network ECS, referred to here as RECS, and the individual heating network RC of the APT apartment ( or in the broad sense of individual housing) that one seeks to equip. Those skilled in the art will understand here, as illustrated in FIG. 2, that each individual apartment 100 of the same residence BAT may be equipped with a device 100. Conventionally, the RECS network of domestic hot water is a centralized network in which circulates DHW domestic hot water having a temperature between 55 to 57 ° C. In the example described here, the heating of domestic hot water ECS is provided centrally by a collective sanitary hot water generator G, located for example in the basement in a cellar. This generator may be, for example, a gas balloon, a thermodynamic water heater, a solar water heater equipped with a booster or any other collective hot water production system. In the example described here, the RECS network has a loopback return. The circulation through the RECS network is provided by a pump P illustrated in FIG.

As illustrated in FIG. 2, the installation 200 of the building BAT comprises a plurality of devices 100 which each interface between: an apartment APT and the individual heating network RC associated with said apartment, the centralized hot water network RECS, and the centralized cold water network REFS.

The devices 100 are connected in parallel between the conveying line and the return loop of the central hot water network RECS. Let us now look in more detail at figure la which relates to a particular embodiment of the invention. In this example described here, the domestic hot water flow ECS arrives at the inlet of the device 100 at a temperature between 55 and 57 ° C. To allow a safe distribution of domestic hot water in an APT apartment is one of the objectives of the present invention. For this purpose, in the example described here and as illustrated in Figure 1a, the device 100 has a branch circuit 21, or connection, comprising a mixing valve 20 connected to the cold water network REFS. EFS cold water has a variable temperature, usually between 5 and 20 ° C. This mixer 20, which may be thermostatic, is configured to regulate and distribute the domestic water in the apartment APT at a predetermined temperature below a threshold value, which preferably is not higher than 50 ° C.

By limiting the temperature to 50 ° C, this mixer 20 is an additional security element for the end user. Indeed, the user who for example takes a shower and adjusts the temperature of his water is assured that the water of his shower is not higher than a temperature of 50 ° C, even if his shower does not include a mixer thermostatic. Using the temperature of the domestic hot water DHW to heat its heating water is one of the other objectives of the present invention. To do this, in the example described here, the device 100 comprises a heat exchanger 10 of the water / water type. A heat exchanger within the meaning of the invention is a device for transferring thermal energy from a fluid such as water to another fluid (here, again water), without mixing. The heat flow passes through the exchange surface that separates the two fluids. As illustrated in FIG. 1a, the exchanger 10 comprises: a primary circuit 11 fed by the incoming domestic hot water stream coming from the centralized hot water network RECS, and a secondary circuit 12 fed by a flow of incoming water from the individual heating network RC associated with said apartment APT. In the example described here, the hot water flow DHW entering the primary circuit 11 has a temperature of about 55 ° C; the flow of water entering the secondary circuit 12 has a temperature of about 35 ° C. The primary 11 and secondary 12 circuits are arranged so that the flow of hot water DHW heat by heat transfer the water flow of the heating network. The exchange surface of the heat exchanger between the two primary 11 and secondary 12 circuits is configured to ensure good heat transfer between the sanitary water of the RECS network and the water of the heating network RC. Thus, thanks to the heat transfer between the two flows, provided by the exchanger 10, the water flow can reach at the output of the secondary circuit 12 a temperature equal for example to 45 ° C. This heating of the water of the RC network requires no additional energy, since it only exploits an already existing energy source, the heat flow of the domestic hot water ECS. Adapting the heating power of the exchanger is possible by controlling the flow rate of the domestic hot water flow entering the primary circuit 11. For this purpose, the device 100 comprises a flow stabilizer 22, of the "AUTOFLOWO" type which allows to adjust the water flow. Preferably, this flow rate on the primary side is constant, this is ensured jointly by the stabilizer 22 and the pump P of looping of the building BAT; such a constant flow ensures the equilibration of the water distribution in the hot water network. As mentioned previously, this stabilizer 22 integrated in the device 100 avoids the installation of balancing valves on the RECS network. In the example described here, the exchanger 10 is dimensioned on the primary side to work on a temperature regime compatible with the temperature constraints of the sanitary water heating loop network of the building, a maximum variation of 5 ° C. In the example described here, those skilled in the art will understand that; the higher the flow rate of the domestic hot water in the primary circuit 11, the greater the heating power (heat transfer) of the water of the heating network is important. The flow of water in the primary circuit 11, which is constant, therefore conditions the power of the module.

In this example, the flow control is provided by the fault detection module 30. As illustrated in FIG. 1a, this module 30 comprises a temperature probe 31 which measures the temperature of the water at the outlet of the primary circuit 11. If the temperature at the outlet of the circuit 11 is too cold (lower for example at 50 ° C.), this corresponds to insufficient flow. In this case, the module 30 comprises warning means 32 which emit a warning signal of the light signal type. The warning signal can also be remote-readable. Controlling the heating temperature is one of the objectives of the present invention. The device 100 described here and illustrated in FIG. 1a comprises regulation means 40 positioned upstream of the secondary circuit 12. In this example, the regulation means 40 are configured to regulate the flow rate of the flow of water entering the secondary circuit. 12 so as to adjust the temperature of the water for the heating network. In FIG. 1a, the flow control means 40 consist of a variable flow pump 41. These means 40 are controlled to regulate the flow of water in the secondary circuit 12 as a function of a room thermostat 45 located in the apartment; this thermostat 45 is controllable via a table 44, and a temperature sensor 47 positioned at the input of the device 100 for measuring the temperature of the incoming water flow from the heating network RC. Depending on the temperature of the incoming water flow, for example here 35 ° C, the desired temperature and entered by the user in Table 44 (for example 19 ° C) and the ambient temperature measured by the probe 45 (for example 17 ° C), the pump 41 increases (or decreases) the flow so that the flow of water entering the secondary 12 is greater (or less important). The increase of the flow of water in the secondary circuit 12 makes it possible to increase the temperature of the hot water of the heating network, for example here the water leaving the secondary reaches 45 ° C. In the example described here, the device 100 comprises counters 23 and 46 which are each liftable. The first counter 46 is configured to measure the heat input supplied to the heating network RC by said device 100 (and more particularly by the hot water network). For this purpose, in the example described in FIG. 1a, the first counter 46 comprises an input temperature sensor 46a and an output temperature sensor 46b. By measuring the temperature difference at the input and at the output of the device 100, on the heating network RC side, it is possible to determine the energy supply of the device.

The second meter 23 is in turn configured to measure the DHW consumption of domestic hot water. Optionally, the device 100 is equipped with a water filling module 50 of the heating network RC.

As illustrated in FIG. 1a, this module 50 is connected to the output of the secondary circuit 12 and to the cold water network REFS. In this example, the module 50 has a backflow preventer 51 to prevent any pollution of the cold sanitary water network in case of overpressure of the heating network RC. Optionally, there is provided a safety mechanism consisting in particular of an expansion tank 52 and a safety valve 53. This valve 53 is preferably set at 3 bars. The example illustrated in FIG. 1b differs only from the example described above and illustrated in FIG. 1a, in that here the regulation means 40 consist of the combination of a pump 42 cooperating with a three-way valve 43.

In this example, pump 42 works at a constant rate. The regulation function is provided by the three-way valve 43, one of whose outputs is connected to the secondary 12 of the heat exchanger, and the other outlet channel is connected to a pipe connected to the heating return, bypassing the secondary heat exchanger. Here, the regulation is obtained by the adjustment of the ratio of water borrowing the two outlets.

Those skilled in the art will understand here that a so-called "maximum" heating is provided by circulating all the water in the secondary heat exchanger. Conversely, the higher the ratio of the water borrowing the short circuit, the lower the heating power. Thus, thanks to these different functional and structural aspects, by equipping an individual dwelling APT such as an apartment with a device 100 according to the present invention, it is possible to manage simultaneously for this apartment APT: - the distribution of hot water sanitary ware in this apartment, especially by limiting the temperature of domestic hot water, and - individual heating, eliminating the use of a central heating network and using as heating source hot water for heating the water of the individual heating network. These two functions are provided jointly by the same device which is presented as a module interfacing on the various existing networks.

Such a device is particularly advantageous, especially for installers who only have to come and interface this device 100 between the different sanitary water networks RECS, REFS of the installation 200 and the RC heating network of the apartment . Thanks to the present invention, it is no longer necessary to make interventions and / or modifications directly on the installations, as is the case in the state of the art. Furthermore, it is no longer necessary to manage the centralized heating networks in the buildings, since the present invention simply requires the use of individual heating networks to heat each individual dwelling individually. It should be observed that this detailed description relates to a particular embodiment of the present invention, but in no case this description is of any nature limiting to the subject of the invention; on the contrary, its purpose is to remove any imprecision or misinterpretation of the claims that follow.

Claims (12)

REVENDICATIONS1. Modular device (100) for heating and distributing hot water, intended to interface between a network (RECS) centralized hot water (DHW) with return loop for a set (BAT) of individual dwellings (APT) ) and an individual heating network (RC) of an individual dwelling (APT) belonging to said assembly (BAT), said device (100) being characterized in that it comprises: a water-type heat exchanger (10) / water comprising a primary circuit (11) intended to be fed by a stream of domestic hot water (DHW) entering from the domestic hot water network (RECS) and a secondary circuit (12) intended to be supplied by a incoming water flow from said individual heating network (RC), said primary circuit (11) and the secondary circuit (12) being arranged together so that the hot water flow (DHW) heats by heat transfer the flow of the heating network, and - upstream of the input of the primary circuit (11), a bypass circuit (21) configured to dispense the domestic water (ECS, EFS). 2. Device according to claim 1 comprising a thermostatic mixer (20) supplied with domestic hot water by the bypass circuit (21) and intended to be connected to a sanitary cold water network (REFS), said mixer being configured for the temperature of the domestic hot water dispensed is less than or equal to a specified threshold value. 3. Device (100) according to claim 1 or 2, comprising an automatic flow stabilizer (22), positioned upstream of the input of the primary circuit (11) and downstream of the branch circuit (21), configured to adjust the water flow to ensure the balancing of the water supply in the domestic hot water network (RECS). 4. Device (100) according to claim 3, wherein the automatic flow stabilizer (22) is configured to ensure a substantially constant flow rate in the primary circuit (11). 5. Device (100) according to any one of claims 1 to 4, comprising a fault detection module (30) having: - a probe (31) configured to measure the temperature of the water at the outlet of the primary circuit ( 11), and - warning means (32) configured to emit a warning signal of the light signal type, when the temperature measured by the probe (31) is below a determined threshold temperature, preferably equal to 50 ° vs. 6. Device (100) according to any one of the preceding claims, comprising flow control means (40) positioned upstream of the secondary circuit (12), configured to regulate the flow of the water flow entering the circuit. secondary (12) to adjust the temperature of the water for the heating network (RC). 7. Device (100) according to claim 6, wherein the flow control means (40) comprise a pump (42) cooperating with a three-way valve (43). The apparatus (100) of claim 6, wherein the flow control means (40) includes a variable flow pump (41). 9. Device (100) according to any one of claims 6 to 8, comprising a control panel (44) accessible to a user and configured to control the control means (40). 10. Device (100) according to claim 9, comprising a temperature probe (45) cooperating with the control panel (44) to determine, as a function of an ambient temperature measured by the probe (45) and optionally a desired heating temperature, the flow rate of the flow of water entering the secondary circuit (12). 11. Device (100) according to any one of the preceding claims, comprising a first counter (46) configured to record the heat input supplied to the heating network (RC) by said device (100). 12. Device (100) according to claim 11, wherein the first counter (46) is télérelevable.13 Device (100) according to any one of the preceding claims, comprising a filling module (50) in water of the heating network. (RC), connected to the output of the secondary circuit (12) and intended to be connected to the network (REFS) sanitary cold water, having a backflow preventer (51) configured to avoid any pollution of the cold water network in case overpressure of the heating network (RC). 14. Device (100) according to claim 13, wherein the filling module (50) comprises a safety mechanism composed in particular of an expansion tank (52) and a safety valve (53), preferably set to 3 bars. 15. Device (100) according to claim 2, taken alone or in combination with one of claims 3 to 14, wherein the mixer (20) is configured to regulate the temperature of the sanitary water in a temperature range substantially between 45 and 55 ° C, preferably substantially equal to 50 ° C. 16. Device (100) according to any one of the preceding claims, comprising a second counter (23) configured to record the consumption of domestic hot water. 17. Device according to claim 16, wherein the second counter is remote-readable. 18. Installation (200) for a set (BAT) of individual dwellings (APT) supplied with domestic hot water (DHW) by a centralized network (RECS) with return loop, the heating of each individual dwelling (APT) being provided by an individual heating network (RC), said installation (200) comprising, for at least one individual housing (APT), a modular heating and hot water distribution device (100) according to any one of claims 1 to 17 interfaced between the network (RECS) centralized hot water and the individual heating network (RC) associated with the at least one individual dwelling (APT). 19. Use of a modular device (100) in an installation (200) according to claim 18 wherein the domestic hot water (DHW) circulates in the network (RECS) of domestic hot water at a temperature between 50 and 60 ° C, preferably between 55 and 57 ° C.3520. Use of a modular device (100) according to claim 2 or 3 in an installation (200) according to claim 18 wherein the automatic flow stabilizer (22) is dimensioned according to the heating power of said device (100). Use of a modular device (100) in an installation (200) according to claim 18 wherein the heat exchanger (10) is sized to operate on a temperature regime compatible with the network temperature variations ( RECS) of domestic hot water, less than or equal to 5 °, from upstream to downstream of the primary circuit of the exchanger.