Steering method

Abstract

The subject of the invention is a method for controlling a ventilation, heating and / or cooling system of an air flow (F) of a zone (Z), such as a living room, at a given setpoint temperature (Tc), the system (1) comprising energy transformation equipment for supplying a heat transfer fluid (2) at a flow temperature (TD), at least one thermal emitter (3) provided with a variable speed air ventilation means and a hydraulic circuit (4) for connecting the energy transformation equipment to supply a heat transfer fluid (2) to said at least one thermal emitter (3), the system being programmed to deliver, according to a time sequence of at least a first period and a second period, a setpoint temperature and a speed level of said ventilation means being associated with each period,the method (100) comprising an anticipation step (103) during the first period and comprising a step (108) of changing the speed of said ventilation means to reach the set temperature of the second period during the first period.,

Description

[0001] This disclosure relates to the field of ventilation, heating and / or cooling of residential or commercial buildings. Technique antérieure

[0002] There are known different types of architectures for ventilation, heating and / or cooling systems for the air in an area of ​​a residential or commercial building, which hydraulically connect equipment for transforming collected energy to provide a cold or hot heat transfer fluid, such as for example a heat pump, a chilled water unit or a geothermal device, to energy use equipment, or thermal emitter, such as a floor, a ceiling, a radiator or even a fan coil.

[0003] Fan coil units in particular are equipped with ventilation means whose noise level can be uncomfortable for the occupants of the area to be ventilated, heated and / or cooled, particularly during times of change in the set temperature, which may involve a change in the speed of the ventilation means.

[0004] So, to limit the noise generated by the ventilation systems, we sometimes find on these fan coils a night or low speed position, which prohibits the increase in speed of the ventilation systems. However, the disadvantage of this type of setting is the reduction in the performance of the system, which cannot then reach the set temperature desired by the users.

[0005] The aim of the present invention is to at least partially remedy these drawbacks. Résumé

[0006] This disclosure improves the situation.

[0007] A method is proposed for controlling a ventilation, heating and / or cooling system for an air flow in an area, such as a living room, at a given setpoint temperature, the system comprising energy transformation equipment for supplying a heat transfer fluid at a starting temperature, at least one thermal emitter provided with a variable speed air ventilation means and a hydraulic circuit for connecting said energy transformation equipment to said at least one thermal emitter, the system being programmed to deliver, according to a time sequence of at least a first period and a second period, a setpoint temperature and a speed level of said ventilation means being associated with each period,the method comprising a step of anticipation during the first period and comprising a step of changing the speed of said ventilation means to reach the set temperature of the second period during the first period.,

[0008] Thus, thanks to the present invention, it is possible to limit the noise generated by the system, in particular during increases in the set temperature in heating mode and decreases in the set temperature in cooling mode while ensuring satisfactory performance when the fan(s) are at low speed.

[0009] In other words, depending on the user's choices, the system automatically decreases its noise level while maintaining heating or cooling performance.

[0010] According to another aspect, the anticipation stage starts in the first period from an anticipation time.

[0011] In another aspect, the anticipation time is equal to the product of an anticipation value times an absolute value of the temperature difference between the set temperature of the second period and a measured air temperature in the zone.

[0012] In another aspect, the anticipation value is fixed.

[0013] In another aspect, the anticipation value is between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C.

[0014] In another aspect, the look-ahead value is calculated by iteration and depends on a time difference between when the set temperature of the second period is reached and the look-ahead time of the previous iteration.

[0015] According to another aspect, the anticipation step comprises for each iteration a step of calculating the iterative anticipation value ( VaN U ) according to the following formula: VaN U = ∑ m = 1 m = U − 1 VaN m + Vac U / U Or Vac U = (MU - ta U- 1 ) / Tc 2 .

[0016] According to another aspect, the number of iterations is finite, preferably between 2 and 20, for example 2, 4 or 20.

[0017] According to another aspect, the method comprises a prior step of calculating the thermal power required to change the set temperature.

[0018] According to another aspect, if the power required is greater than the power that the system can provide taking into account the speed level of said ventilation means, the method comprises a step of modifying the starting temperature of the heat transfer liquid.

[0019] The invention also relates to a method for controlling a ventilation, heating and / or cooling system of an air flow (F) of a zone (Z), such as a living room, at a given set temperature (Tc), this system comprising energy transformation equipment for supplying a heat transfer fluid at a starting temperature (TD), at least one thermal emitter provided with a variable speed air ventilation means and a hydraulic circuit for connecting the energy transformation equipment to said at least one thermal emitter, the method comprising a step of modifying the starting temperature of the heat transfer fluid (TD), when the given set temperature (Tc) is not reached after a predetermined period of time or when, after calculation,it is determined that the power required to reach the given set temperature (Tc) is greater than the power that the system can provide taking into account the speed level of said ventilation means, said speed of said ventilation means being kept unchanged.

[0020] The power that the system can provide is limited because the fan speed is limited to reduce noise. This speed is therefore strictly lower than the maximum speed that the fan can provide.

[0021] For purely illustrative purposes, the speed of said ventilation means is lower than the maximum speed of said ventilation means, preferably equal to the lowest speed of said ventilation means, or up to 25% of the maximum speed of said ventilation means, and even better up to 35% of the maximum speed of said ventilation means.

[0022] Preferably, according to this method, the system is programmed to deliver, according to a time sequence of at least a first period and a second period, a set temperature and a speed level of said ventilation means being associated with each period, the method comprising a step of anticipation during the first period and comprising a step of changing the speed of said ventilation means to reach the set temperature of the second period during the first period.

[0023] Thus, thanks to the present invention, it is possible to limit the noise generated by the system, in particular during increases in the set temperature in heating mode and decreases in the set temperature in cooling mode while ensuring satisfactory performance when the fan(s) are at low speed.

[0024] In other words, depending on the user's choices, the system automatically decreases its noise level while maintaining heating or cooling performance.

[0025] According to another aspect, the anticipation stage starts in the first period from an anticipation time.

[0026] In another aspect, the anticipation time is equal to the product of an anticipation value times an absolute value of the temperature difference between the set temperature of the second period and a measured air temperature in the zone.

[0027] In another aspect, the anticipation value is fixed.

[0028] In another aspect, the anticipation value is between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C.

[0029] In another aspect, the look-ahead value is calculated by iteration and depends on a time difference between when the set temperature of the second period is reached and the look-ahead time of the previous iteration.

[0030] According to another aspect, the anticipation step comprises for each iteration a step of calculating the iterative anticipation value ( VaN U ) according to the following formula: VaN U = ∑ m = 1 m = U − 1 VaN m + Vac U / U Where Vac U =(MU -ta U-1 ) / Tc2.

[0031] According to another aspect, the number of iterations is finite, preferably between 2 and 20, for example 2, 4 or 20.

[0032] According to another aspect, this method comprises a prior step of calculating the thermal power necessary for the change in set temperature.

[0033] The invention also relates to an air cooling system for ventilation, heating and / or cooling of an air flow of an area, such as a living room, to a given setpoint temperature, the system comprising energy transformation equipment for supplying a heat transfer fluid at a starting temperature, at least one thermal emitter provided with a variable speed air ventilation means and a hydraulic circuit for connecting the energy transformation equipment to supply a heat transfer fluid to said at least one thermal emitter, the system being programmed to deliver, according to a time sequence of at least a first period and a second period, a setpoint temperature and a speed level of said ventilation means being associated with each period, the system comprising a control unit configured to implement the control method as described above.

[0034] The invention also relates to a computer program comprising instructions for implementing the method as described above when this program is executed by a processor.

[0035] The invention also relates to a non-transitory recording medium readable by a computer on which is recorded a program for implementing the method as described above when this program is executed by a processor. Brève description des dessins

[0036] Other features, details and advantages will become apparent upon reading the detailed description below, and upon analyzing the attached drawings, in which: Fig. 1 [ Fig. 1 ] shows a schematic view of a ventilation, heating and / or ventilation system according to the present invention. Fig. 2 [ Fig. 2 ] shows a schematic longitudinal sectional view of a fan coil according to the present invention. Fig. 3 [ Fig. 3 ] shows a timing diagram of a process for controlling the system of the figure 1 according to a first embodiment (with fixed anticipation value) and a second embodiment (with iterative anticipation value). Fig. 4 [ Fig. 4 ] shows an example of a daily schedule for the process of the figure 3 . Fig. 5 [ Fig. 5 ] shows a timing diagram according to the prior art. Fig. 6 [ Fig. 6 ] shows a timeline of the implementation of the process of the figure 3 according to the first embodiment. Fig. 7 [ Fig. 7 ] shows a timeline of the implementation of the process of the figure 3 according to the second embodiment. Fig. 8 [ Fig. 8 ] shows a flowchart of the implementation of the process of the figure 3 according to the first embodiment. Fig. 9 [ Fig. 9 ] shows a flowchart of the implementation of the process of the figure 3 according to the second embodiment. Fig. 10 [ Fig. 10 ] shows a flowchart relating to a step in the process of the figure 3 . Description des modes de réalisation

[0037] The present disclosure involves ventilating, cooling and / or heating a zone Z, such as a room in a residential or commercial building, using a cooling system, referenced 1 in the figures. The system 1 implements a method 100 for controlling the temperature in the zone Z.

[0038] As visible on the figure 1 , the system 1 comprises energy transformation equipment for providing a heat transfer fluid 2. This energy transformation equipment collected by a source, to provide a heat transfer fluid 2 is a heat pump, a chilled water unit or a geothermal source. This heat transfer fluid is here water. The water temperature at the outlet of the energy transformation equipment 2 is called the water outlet temperature, noted TD.

[0039] The system 1 also includes one or more thermal emitters 3, such as a floor, a ceiling, a radiator, a hydraulic radiator or a fan coil, which will be detailed later. The system 1 also includes a hydraulic circuit 4 for connecting the energy transformation equipment 2 to each thermal emitter 3.

[0040] The control method 100 is implemented by a control unit UC (also called a calculation module) which can be fully included in the thermal emitter 3, or fully in the energy transformation equipment for supplying a heat transfer liquid 2, or partially in both, or even in a separate module, or partially in the thermal emitter 3, the energy transformation equipment for supplying a heat transfer liquid 2 and the separate module.

[0041] Preferably, the or at least one of the thermal emitters 3 is a fan coil unit, as illustrated in the figure 2 .

[0042] As can be seen from this figure, the fan coil 3 comprises a casing 10 provided with an air inlet 11 and an air outlet 12. The emitter 3 also comprises at least one fan 13 for forcing air into the casing 2 by convection. The speed of the fan is variable.

[0043] The transmitter 3 also includes a heat exchanger 14, for example of the hydraulic type, also called a cold battery. Advantageously, the transmitter 3 contains a filter 15 behind the air inlet 11.

[0044] The heat exchanger 14 is preferably reversible. To heat the zone Z, it is the water flowing in the exchanger 14 which heats the air circulating in the emitter 3. Thus, the air drawn into the casing 10 by the air inlet 11 is heated in the exchanger 14, and heats the zone Z when it leaves the emitter 3 by the outlet 12.

[0045] To cool zone Z, it is the air which transmits its calories to the water flowing in the exchanger 14. Thus, the air drawn into the envelope 10 by the air inlet 11 is cooled in the exchanger 14, and cools zone Z when it leaves the emitter 3 by the outlet 12.

[0046] Advantageously, the transmitter 3 comprises a humidity sensor 16, preferably positioned near the inlet 11, in the air flow, at the bottom of the device. Alternatively, the humidity measurement is carried out by a remote station, in wired or wireless connection with the control unit UC. The transmitter is also equipped with a temperature probe 17 preferably placed on the inlet of the exchanger 14.

[0047] The transmitter 3 comprises a control module 18 (otherwise called a pilot module) connected wired or wirelessly to the humidity and temperature sensors, so that the transmitter 3 can cooperate with the energy transformation equipment 2 of the heat pump type, for example, making it possible to produce heat and cold.

[0048] As seen on the figure 2 , the transmitter 3 is equipped with a human-machine interface, 19, to allow a user to enter a target air temperature, in particular, called a setpoint temperature. The interface 19 is either embedded on the transmitter 3 or remote (remote control, mobile phone, called a smartphone in English, or even the interface of the energy transformation equipment 2).

[0049] According to the alternative of the figure 3 , the control unit UC is partially included in each transmitter 3, in the control module 18 for example, and in the energy transformation equipment 2. The communication between each thermal transmitter 3 and the energy transformation equipment 2 can be wired, or, preferably, wireless, by radio frequency, via the Zigbee protocol, for example. For example, the part of the control unit UC included in the transmitter 3 is connected, wired or wireless, to the humidity and temperature sensors and communicates with the part of the control unit UC included in the energy transformation equipment 2. The energy transformation equipment 2 then defines the flow temperature according to the flow temperatures calculated by each of the transmitters.

[0050] According to another alternative, not illustrated, the control unit is fully integrated into the generator 2. The communication between each thermal emitter 3 and the energy transformation equipment 2 can be wired, or, preferably, wireless, by radio frequency, via the Zigbee protocol, for example. The energy transformation equipment 2 centralizes the humidity and temperature measurements and the control unit calculates the dew point, then the water outlet temperature.

[0051] Note that interface 19 can be integrated into the control unit UC.

[0052] The interface 19 allows the user to define periods over a given time, for example day or week, corresponding to moments of life, such as, for example, absence or presence in zone Z, night or day. Each period is associated with a set temperature and a noise level. For example, the fan of the fan coil 13 can have two speed levels, each corresponding to a respective noise level (low, medium) or three speed levels (low, medium, high), each corresponding to a respective noise level (low, medium, high).

[0053] By default, we define at least day / night periods and presence / absence periods and for each of these periods the user indicates a set temperature.

[0054] We now refer to the figure 3 .

[0055] As visible in this figure, the method 100 applies to a time sequence of at least two periods, that is to say the succession over time of at least a first period P1 and a second period P2. A set temperature Tc1 is associated with the first period P1 and a set temperature Tc2 is associated with the second period P2, Tc2 being different from Tc1.

[0056] The method 100 comprises an anticipation step 101 (ANT) to reach the set temperature Tc2 of the second period P2 during the period P1, over an anticipation time noted ta.

[0057] To do this, step 101 includes a step 102 of measuring (MES) the air temperature in zone Z, Tz, for example using the temperature sensor 17. D is the absolute value of the temperature difference between the set temperature of the second period Tc2 and the measured temperature Tz. In other words, the following formula I can be written: D=ITc2-TzI.

[0058] The anticipation time ta (in minutes or seconds) is written as the product of an anticipation value Va (in minutes / °C or seconds / °C) by the difference D (in °C). Thus, we can write the following formula II: ta=Va*D.

[0059] Step 101 includes a step 103 of determining (DET) the anticipation time ta. During this step, ta is calculated by applying formula II above.

[0060] According to a first embodiment, the anticipation value Va is fixed, pre-programmed. It is for example between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C. Thus, the activation time can be equal to a value between 10 and 180 minutes and is preferably set to 90 minutes.

[0061] According to a second embodiment, the anticipation value Va is adaptive. In this case, the value Va is directly linked to the losses of zone Z. The value Va is inversely proportional to the insulation level of zone Z: the better the zone is insulated, the lower the value of Va.

[0062] According to this second embodiment, the method 100 is iterative. At the start of the system 1, that is to say at the first iteration, the method carries out the steps 102 and 103, as already explained. The value Va is fixed beforehand. It is for example between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C.

[0063] The method 100 then comprises a succession of steps 104 to 107 for each iteration, i, as will be detailed.

[0064] The method 100 comprises a set of two steps referenced 104 and 105. During step 104 (MESS), the system 1 measures the temperature Tz. During step 105 (DIFF), the system 1 calculates the difference between the measured temperature Tz and the set temperature of the second period Tc2, i.e. the temperature which is sought to be reached. The set of two steps 104 - 105 is repeated at a given frequency. For example, the frequency is between 1 second and 10 minutes and more preferably 40 seconds.

[0065] When the ambient temperature Tz has reached the setpoint value Tc2 (for a change from period P1 to P2), at time M i , the method 100 comprises a step (CALC-Vac i ) 106 of calculating a corrected value of the anticipation value, Vaci, using formula II, in which the activation time tai is equal to the time difference between the time M i when the setpoint temperature Tc2 is reached and the previous activation time ta i-1.

[0066] In other words, in step 106, we calculate Vac i =(M i - ta i-1 ) / Tc2.

[0067] During a step 107, called convergence (CONV), the new anticipation value VaN i is determined, which depends on the corrected value Vac i .

[0068] At a minimum, the calculation is done over two iterations. Thus, we calculate VaN 2 according to the following formula III: VaN 2 = Va + Vac 1 / 2

[0069] Advantageously, the calculation is done over four iterations. Thus, VaN 4 is calculated according to the following formula IV: VaN 4 = ∑ m = 1 m = 3 VaN m + Vac 4 / 4

[0070] Preferably, the calculation is done over twenty iterations. Thus, VaN 20 is calculated according to the following formula V: VaN 20 = ∑ m = 1 m = 19 VaN m + Vac 20 / 20

[0071] More generally, we can choose to do the calculation on a number U. In this case, we calculate VaN U according to the following formula VI: VaN U = ∑ m = 1 m = U − 1 VaN m + Vac U / U

[0072] On the figure 4 , we have given an example, of course non-limiting, of a programming of the set temperature in zone Z over 24 hours. On this daily schedule, a first period P1 is defined, night period, between 0h and 6h in the morning, then a second period P2, of presence, is defined between 6h and 9h in the morning, followed by a third period P3, of absence, between 9h and 18h ​​and a fourth period P4, of presence, between 18h and 22h and finally a last period P5, night, from 22h.

[0073] Each night period is, in the example of the figure 4 , associated with a set temperature of 19°C, while each period of presence is associated with a temperature of 21°C and each period of absence is associated with a temperature of 15.5°C.

[0074] In this example, the anticipation value is fixed, and equal to 30 minutes / °C.

[0075] We now detail the implementation of method 100 using the example of figure 3 , for each change of periods.

[0076] The anticipation of the second period P2 during the first period P1 includes step 102 of measuring the air temperature in zone Z. During step 102, consider that a temperature Tz=19°C is measured. During step 103, ta=Va*D=30*I21-19I=60 minutes is calculated.

[0077] Thus, system 1 starts heating one hour before the programmed setpoint change.

[0078] The anticipation of the third period P3 during the second period P2 includes step 102 of measuring the air temperature in zone Z. During step 102, consider that Tz=20°C is measured. During step 103, ta=Va*D=30*115.5-201=135 minutes is calculated.

[0079] Thus, system 1 begins cooling 135 minutes before the programmed setpoint change.

[0080] The anticipation of the fourth period P4 during the third period P3 includes step 102 of measuring the air temperature in zone Z. During step 102, consider that Tz=16°C is measured. During step 103, ta=Va*D=30*I21-16I=150 minutes is calculated.

[0081] Thus, system 1 begins cooling 150 minutes before the programmed setpoint change.

[0082] The anticipation of the fifth period P5 during the fourth period P4 includes step 102 of measuring the air temperature in zone Z. During step 102, consider that Tz=21°C is measured. During step 103, ta=Va*D=30*I19-21I=60 minutes is calculated.

[0083] Thus, system 1 begins cooling 60 minutes before the programmed setpoint change.

[0084] Referring again to the figure 3 , the method 100 comprises a step 108 (VIT) of changing the speed of the fan coil 3 from the anticipation time ta. Thus, when the system 1 begins to heat or cool, at time ta, the speed of the fan coil 3 changes, in order to reach the set temperature at the time of the change of periods. The value of the anticipation time is determined over a period where the fan speed has already changed. Since the anticipation time is variable, it is possible that the temperature is not reached in time or that it is reached too early. The system will adapt and correct the anticipation time for the next iterations

[0085] For example, in the event of an increase in the set temperature in heating mode, and conversely in the event of a decrease in the set temperature in cooling mode, it is planned to anticipate changes in the set temperature either at the same speed level (therefore at a constant noise level) or at a higher speed level, but taking place in the absence of users.

[0086] As a result, the user benefits from greater comfort, since each set temperature is reached at the chosen, programmed time. In addition, increasing the fan speed when users are absent and then reducing it once users are present greatly optimizes user comfort.

[0087] We now refer to the figures 5 And 6 in order to better visualize the implementation of step 108.

[0088] As can be seen from these figures, the set temperature (Tc) is 15.5°C from midnight to 6 a.m., then 19°C between 6 a.m. and 5 p.m. and finally 15.5°C from 6 p.m.

[0089] According to the prior art, the fan speed (curve V) increases its speed from low speed to high speed at the change of periods at 6 a.m. and then decreases its speed from high speed to low speed at the change of periods at 6 p.m. Thus, the temperature Tz (curve Tz) in zone Z gradually increases from 6 a.m. to reach the expected set temperature Tc2 around 8 a.m., when it stabilizes, before decreasing from 6 p.m. to reach the expected set temperature Tc3 at 11 p.m.

[0090] According to method 100, from the anticipation time (around 3:30 a.m.), the fan speed (dotted curve) increases from low speed to high speed until the change of period, at 6 a.m., then remains at low speed throughout the day. Thus, the temperature Tz (dashed curve) in zone Z increases gradually from 3:30 a.m. to reach the set temperature Tc2 at 6 a.m., when it stabilizes, before decreasing from 6 p.m. to reach the expected set temperature Tc3 at 11 p.m.

[0091] It is noted that at the end of step 103, or even before it, depending on the temperature Tz, the fan speed and the anticipation value, it is possible that the temperature Tc2 cannot be reached by simply modifying the fan speed.

[0092] For example, the method 100 includes a preliminary step of calculating the thermal power required to change the set temperature. And, if the power required is greater than the power that the system 1 can provide, the method 100 includes a step of modifying the water outlet temperature TD.

[0093] Thus, in this case, the method 100 comprises a step 109 of calculating (CAL - TD ) a new water outlet temperature TD of the energy transformation equipment 2. The energy transformation equipment 2 defines the water outlet temperature TD as a function of all the states of the system. The temperature TD is then increased or decreased as a function of the activation of a hot or cold mode. This change in water temperature TD makes it possible to reach the set temperature without changing the noise level in the room.

[0094] We now refer to the figure 7 in order to better visualize the implementation of step 109.

[0095] As seen in this figure, the set temperature Tc2 is 19°C. The temperature Tz in zone Z is 17.5°C. The thermal power required to reach Tc2 is higher than the thermal power achievable with the parameters of system 1, including the (reduced) fan speed, and the water outlet temperature TD of 35°C, then, at step 109, the temperature TD is switched to 45°C at the time of the change of period P1-P2.

[0096] In this case, with the fan speed remaining unchanged at the minimum level, the set temperature Tc2 is reached around 8 a.m., when the temperature in the hydraulic circuit reaches 45°C. The temperature measurement can be carried out on the transmitter or on the energy transformation equipment.

[0097] We now refer to the figure 8 which presents a flowchart of the method 100 in its embodiment with fixed anticipation value. As can be seen from this figure, the first diamond corresponds to the activation of the anticipation step 101 for a fixed anticipation value and anticipation time. Here, ta = 90 minutes. At time ta before the change of period, there is (rectangle) an increase in the fan speed, to reach the set temperature Tc2 during step 108. Once the temperature Tc2 is reached, the system 1 decreases the fan speed (second rectangle).

[0098] We now refer to the figure 9 which presents a flowchart of the method 100 in its embodiment with anticipation value by iterations. As can be seen from this figure, the first diamond corresponds to the activation of step 101 for an anticipation value and an anticipation time set to a default value. Here, ta=90 minutes. At time ta before the change of period, there is (rectangle) an increase in the fan speed, to reach the set temperature Tc2 during step 108. Once the temperature Tc2 is reached, the system 1 decreases the fan speed (second rectangle). As already explained, then, during steps 104 to 107, the anticipation time is corrected.

[0099] We now refer to the figure 10which presents a flowchart relating more particularly to step 109. As can be seen from this figure, when it is necessary to change the fan speed (first diamond), the energy transformation equipment 2 and the transmitter 3 exchange information (first rectangle) to enable the calculation of a new water outlet temperature TD of the energy transformation equipment 2 (second rectangle). Once determined, the new water outlet temperature is applied by the method 100 (third rectangle).

[0100] We now cite some non-limiting examples that can be combined with each other.

[0101] According to a first example, the transmitter 3 is a fan coil equipped with the human-machine interface 19 on which three modes can be set: presence, absence and night. These modes are associated with temperature setpoints and are defined temporally by day of the week. During presence and night modes, the fan speed is limited to a medium value for presences and a low value for night. In absence mode, the fan speed is not limited. It is also possible to activate a heating mode and a cooling mode.

[0102] Transmitter 3 is equipped with a tangential fan. The fan coil is also equipped with the control module 18, connected by a wired connection to the human-machine interface which measures the room air temperature and the water temperature. It also allows the fan speed to be modulated and communicates with the energy transformation equipment 2, of the heat pump type, the optimum water outlet temperature, via a Zigbee radio connection.

[0103] Depending on the modes set during the day, the control module 18 modifies its water temperature and communicates it to the heat pump 2 in order to maintain the temperature in the room while limiting the fan speeds. Depending on the changes in the set temperature, the control module 18 anticipates the change and increases the fan speed to limit noise during periods of presence or night.

[0104] In a second example, the fan coil 3 is equipped with the human-machine interface 19 on which three speeds can be set (low, medium and high). These speeds are defined temporally by day of the week. The fan coil 3 is equipped with axial fans. It is also possible to activate a heating mode and a cooling mode.

[0105] Transmitter 3 is also equipped with control module 18, connected by a wired link to the human-machine interface which measures the room air temperature and the water temperature. It also allows the fan speed to be modulated and communicates with a heat pump the optimum water outlet temperature, via a Zigbee radio connection.

[0106] Depending on the speeds set during the day, the control module 18 modifies its water temperature and communicates it with the heat pump 2 in order to maintain the temperature in the room while limiting the speed of the fans. Depending on the speed changes, the control module 18 anticipates the change and increases the fan speed to limit noise during periods when the speed is reduced.

[0107] As is clear from the above, the method 100 and the system 1 ensure high acoustic comfort, due to the anticipation of period changes, which in particular make it possible to operate the fans at high speed during the absence of users, while maintaining satisfactory performance of the system 1, making it possible to reach each set temperature desired by the users.

Claims

1. Method for controlling a ventilation, heating and / or cooling system of an air flow (F) of a zone (Z), such as a living room, at a given set temperature (Tc), this system (1) comprising energy transformation equipment for supplying a heat transfer fluid (2) at a starting temperature (T D ), at least one thermal emitter (3) provided with a variable speed air ventilation means and a hydraulic circuit (4) for connecting the energy transformation equipment (2) to said at least one thermal emitter (3), the method (100) comprising a step of modifying the starting temperature of the heat transfer liquid (T D), when the given set temperature (Tc) is not reached after a predetermined period of time or when, after calculation, it is determined that the power required to reach the given set temperature (Tc) is greater than the power that the system (1) can provide taking into account the speed level of said ventilation means, said speed of said ventilation means being kept unchanged.

2. Control method according to claim 1, characterized in that the speed of said ventilation means is lower than the maximum speed of said ventilation means, preferably equal to the lowest speed of said ventilation means or even better up to 25% of the maximum speed of said ventilation means.

3. Air cooling system for ventilation, heating and / or cooling of an air flow (F) of a zone (Z), such as a living room, to a given set temperature (Tc), the system (1) comprising energy transformation equipment for supplying a heat transfer fluid (2) at a starting temperature (T D ), at least one thermal emitter (3) provided with a variable speed air ventilation means and a hydraulic circuit (4) for connecting the energy transformation equipment (2) to said at least one thermal emitter (3), the system being programmed to deliver, according to a time sequence of at least a first period (P1) and a second period (P2), a set temperature (Tc1; Tc2) and a speed level of said ventilation means being associated with each period, the system comprising a control unit configured to implement the control method according to claim 1 or 2.

4. Computer program comprising instructions for implementing the method according to claim 1 or 2, when this program is executed by a processor.

5. Non-transitory recording medium readable by a computer on which is recorded a program for implementing the method according to claim 1 or 2, when this program is executed by a processor.

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