PILOTING PROCEDURE

Abstract

The invention relates to a method for controlling a ventilation, heating and / or cooling system of an airflow (F) of a zone (Z), such as a living room, at a given setpoint temperature (Tc), the system (1) comprising an energy conversion unit to supply a heat transfer fluid (2) at a starting temperature (TD), at least one thermal emitter (3) equipped with a variable speed air ventilation means and a hydraulic circuit (4) for connecting the energy conversion unit 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 process (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 setpoint temperature of the second period during the first period. Figure from the abstract: Figure 3,

Description

Title of the invention: CONTROL METHOD

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

[0002] Various types of ventilation, heating and / or air cooling system architectures are known for an area of ​​a residential or commercial building, which hydraulically connect a piece of 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 an energy use equipment, or thermal emitter, such as a floor, a ceiling, a radiator or a fan coil unit.

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

[0004] Therefore, to limit the noise generated by the ventilation system, these fan coil units sometimes have a night or low-speed setting, which prevents the ventilation speed from increasing. However, the drawback of this type of setting is the reduction in system performance, which then cannot reach the setpoint temperature desired by the users.

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

[0006] This disclosure improves the situation.

[0007] A method is proposed for controlling a ventilation, heating, and / or cooling system for an airflow in an area, such as a living room, to a given setpoint temperature. The system comprises energy conversion equipment for supplying a heat transfer fluid at a starting temperature, at least one heat emitter equipped with a variable-speed air ventilation device, and a hydraulic circuit connecting said energy conversion equipment to said at least one heat emitter. The system is 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 device being associated with each period. The method includes an anticipation step during the first period and a changeover step. of the speed of said ventilation means to reach the setpoint 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 setpoint temperature in heating mode and decreases in setpoint 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 reduces its noise level while maintaining heating or cooling performance.

[0010] According to another aspect, the anticipation stage begins in the first period from a time of anticipation.

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

[0012] According to another aspect, the expectation value is fixed.

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

[0014] According to another aspect, the anticipation value is calculated by iteration and depends on a time difference between the time when the setpoint temperature of the second period is reached and the anticipation time of the previous iteration.

[0015] According to another aspect, the anticipation step includes, for each iteration, a step for calculating the iterative anticipation value according to the following formula:

[0016] Vanv = Vac^ / U

[0017] Where VaCu = (MU_ taUA)lTc2-

[0018] According to another aspect, the number of iterations is finite, preferably between 2 and 20, for example 2, 4 or 20.

[0019] According to another aspect, the process includes a preliminary step of calculating the thermal power required to change the setpoint temperature.

[0020] According to another aspect, if the power required is greater than the power that the system can supply given the speed level of said ventilation means, the process includes a step of modifying the starting temperature of the heat transfer fluid.

[0021] The invention also relates to a method for controlling a ventilation, heating and / or cooling system of an airflow (F) of a zone (Z), such as a living room, at a given setpoint temperature (Te), this system comprising an energy transformation equipment to supply a heat transfer fluid at a starting temperature (TD), at least one thermal emitter equipped 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 process comprising a step of modifying the starting temperature of the heat transfer fluid (TD), when the given setpoint temperature (Te) is not reached after a predetermined period of time or when, after calculation, it is determined that the power required to reach the given setpoint temperature (Te) is greater than the power that the system can supply taking into account the speed level of said ventilation means, said speed of said ventilation means being kept unchanged.

[0022] The power that the system can deliver is limited because the fan speed is limited in order to reduce noise. This speed is therefore strictly less than the maximum speed that the fan can deliver.

[0023] By way of illustration only, the speed of said ventilation means is less 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.

[0024] 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 setpoint temperature and a speed level of said ventilation means being associated with each period, the method comprising an anticipation step during the first period and comprising a speed change step of said ventilation means to reach the setpoint temperature of the second period during the first period.

[0025] Thus, thanks to the present invention, it is possible to limit the noise generated by the system, in particular during increases in setpoint temperature in heating mode and decreases in setpoint temperature in cooling mode while ensuring satisfactory performance when the fan(s) are at low speed.

[0026] In other words, depending on the user's choices, the system automatically reduces its noise level while maintaining heating or cooling performance.

[0027] According to another aspect, the anticipation stage begins in the first period from a time of anticipation.

[0028] According to another aspect, the anticipation time is equal to the product of an anticipation value and an absolute value of the temperature difference between the setpoint temperature of the second period and an air temperature measured in the area.

[0029] According to another aspect, the expectation value is fixed.

[0030] According to another aspect, the anticipation value is between 10 minutes / °C and 45 minutes / °C, for example 30 minutes / °C.

[0031] According to another aspect, the anticipation value is calculated by iteration and depends on a time difference between the time when the setpoint temperature of the second period is reached and the anticipation time of the previous iteration.

[0032] According to another aspect, the anticipation step includes, for each iteration, a step for calculating the iterative anticipation value according to the following formula: [00331 Van v = (E" / '^ VaN„ + Vac^lV

[0034] Where Vacu=(Mu-tau l) / Tc2.

[0035] According to another aspect, the number of iterations is finite, preferably between 2 and 20, for example 2, 4 or 20.

[0036] According to another aspect, this process includes a preliminary step of calculating the thermal power required to change the setpoint temperature.

[0037] The invention also relates to an air cooling system for ventilation, heating and / or cooling of an airflow in an area, such as a living room, to a given setpoint temperature, the system comprising an energy transformation equipment to supply a heat transfer fluid at a starting temperature, at least one thermal emitter equipped 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.

[0038] The invention also relates to a computer program comprising instructions for implementing the process as described above when this program is executed by a processor.

[0039] The invention also relates to a non-transient recording medium readable by a computer on which a program is recorded for the implementation of the process as described above when this program is executed by a processor. Brief description of the drawings

[0040] Other features, details and advantages will become apparent from the detailed description below and from the analysis of the accompanying drawings, in which: Fig. 1

[0041] [Fig-1] shows a schematic view of a ventilation, heating and / or ventilation according to the present invention. Fig. 2

[0042] [Fig.2] shows a schematic longitudinal cross-sectional view of a fan coil unit according to the present invention. Fig. 3

[0043] [Fig.3] shows a timing diagram of a method for controlling the system of [Fig.1] according to a first embodiment (with fixed anticipation value) and a second embodiment (with iterative anticipation value). Fig. 4

[0044] [Fig.4] shows an example of a daily program for the process of [Fig.3]. Fig. 5

[0045] [Fig.5] shows a chronogram according to the prior art. Fig. 6

[0046] [Fig.6] shows a chronogram of the implementation of the process of [Fig.3] according to the first embodiment. Fig. 7

[0047] [Fig.7] shows a chronogram of the implementation of the process of [Fig.3] according to the second embodiment. Fig. 8

[0048] [Fig.8] shows a flowchart of the implementation of the process of [Fig.3] according to the first embodiment. Fig. 9

[0049] [Fig.9] shows a flowchart of the implementation of the process of [Fig.3] according to the second embodiment. Fig. 10

[0050] [Fig. 10] shows a flowchart relating to a step of the process of [Fig.3]. Description of the implementation methods

[0051] This disclosure describes how to ventilate, cool, and / or heat a zone Z, such as a room in a residential or commercial building, using a cooling system, referred to as 1 in the figures. System 1 implements a temperature control method 100 in zone Z.

[0052] As can be seen in [Fig. 1], the system 1 comprises energy conversion equipment for supplying a heat transfer fluid 2. This equipment The energy transformation process, using a heat pump, a chilled water system, or a geothermal source, transforms energy collected from a source to provide a heat transfer fluid. In this case, the heat transfer fluid is water. The water temperature at the outlet of the energy transformation equipment is called the water supply temperature, denoted TD.

[0053] System 1 also includes one or more heat emitters 3, such as a floor, a ceiling, a radiator, a hydronic radiator, or a fan coil unit, which will be described in detail later. System 1 also includes a hydraulic circuit 4 for connecting the energy conversion equipment 2 to each heat emitter 3.

[0054] The control method 100 is implemented by a control unit UC (also called a computing module) which can be fully included in the thermal emitter 3, or fully included in the energy transformation equipment for supplying a heat transfer fluid 2, or partially included in both, or even in a separate module, or partially included in the thermal emitter 3, the energy transformation equipment for supplying a heat transfer fluid 2 and the separate module.

[0055] Preferably, the or at least one of the thermal emitters 3 is a fan coil unit, as illustrated in [Fig.2].

[0056] As can be seen from this figure, the fan coil unit 3 comprises a casing 10 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 fan speed is variable.

[0057] The emitter 3 also includes a heat exchanger 14, for example of the hydraulic type, also called a cold coil. Advantageously, the emitter 3 contains a filter 15 behind the air inlet 11.

[0058] The heat exchanger 14 is preferably reversible. To heat zone Z, it is the water flowing in the exchanger 14 that heats the air circulating in the emitter 3. Thus, the air drawn into the envelope 10 by the air inlet 11 is heated in the exchanger 14, and heats zone Z when it exits the emitter 3 by the outlet 12.

[0059] To cool zone Z, it is the air that 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 exits the emitter 3 by the outlet 12.

[0060] Advantageously, the transmitter 3 includes a humidity sensor 16, preferably positioned near the inlet 11, in the airflow, at the bottom of the device. Alternatively, the humidity measurement is carried out by a remote station, connected either wired or wirelessly to the control unit UC. The transmitter is also equipped with a temperature probe 17, preferably placed on the inlet of the heat exchanger 14.

[0061] The transmitter 3 includes a control module 18 (also called a pilot module) connected by wire or wireless means 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, enabling the production of heat and cold.

[0062] As can be seen in [Fig. 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 the setpoint temperature. The interface 19 is either integrated into the transmitter 3 or remote (remote control, mobile phone, also known as a smartphone, or the interface of the power conversion equipment 2).

[0063] According to the alternative in [Fig. 3], the control unit CU is partially included in each transmitter 3, for example in the control module 18, and in the energy conversion equipment 2. Communication between each thermal transmitter 3 and the energy conversion equipment 2 can be wired or, preferably, wireless, via radio frequency, using the Zigbee protocol, for example. For example, the portion of the control unit CU included in the transmitter 3 is connected, either wired or wirelessly, to the humidity and temperature sensors and communicates with the portion of the control unit CU included in the energy conversion equipment 2. The energy conversion equipment 2 then sets the starting temperature based on the starting temperatures calculated by each of the transmitters.

[0064] According to another alternative, not shown, the control unit is fully integrated into the generator 2. Communication between each thermal emitter 3 and the energy conversion equipment 2 can be wired, or, preferably, wireless, by radio frequency, via the Zigbee protocol, for example. The energy conversion equipment 2 centralizes the humidity and temperature measurements, and the control unit calculates the dew point and then the water outlet temperature.

[0065] Note that interface 19 can be integrated into the control unit UC.

[0066] Interface 19 allows the user to define periods over a given time, for example, a day or a week, corresponding to life events, such as, for example, absence or presence in zone Z, night or day. Each period is associated with a setpoint temperature and a noise level. For example, the fan of the fan coil unit 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).

[0067] By default, at a minimum day / night periods and presence / absence periods are defined, and for each of these periods the user indicates a setpoint temperature.

[0068] Reference is now made to [Fig.3].

[0069] As can be seen 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 PI and a second period P2. A setpoint temperature Tel is associated with the first period PI and a setpoint temperature Tc2 is associated with the second period P2, Tc2 being different from Tel.

[0070] The process 100 includes an anticipation step 101 (ANT) to reach the setpoint temperature Tc2 of the second period P2 during the period PI, over an anticipation time denoted ta.

[0071] To achieve this, step 101 includes a measurement step 102 of the air temperature in zone Z, Tz, for example using the temperature sensor 17. D is denoted as the absolute value of the temperature difference between the setpoint temperature of the second period Tc2 and the measured temperature Tz. In other words, we can write the following formula I: D = ITC2 - TzI.

[0072] The anticipation time ta (in minutes or seconds) is written as the product of an anticipation value Va (in minutes / °C or in seconds / °C) by the difference D (in °C). Thus, we can write the following formula II: ta=Va*D.

[0073] Step 101 includes a step 103 for determining (DET) the anticipation time ta. During this step, ta is calculated by applying formula II above.

[0074] According to a first embodiment, the anticipation value Va is fixed and pre-programmed. For example, it is between 10 minutes / °C and 45 minutes / °C, or 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.

[0075] According to a second embodiment, the anticipation value Va is adaptive. In this case, the value Va is directly related to the heat losses of zone Z. The value Va is inversely proportional to the level of insulation of zone Z: the better the zone is insulated, the lower the value of Va.

[0076] According to this second embodiment, process 100 is iterative. At the start of system 1, i.e., at the first iteration, the process performs steps 102 and 103, as already explained. The value Va is fixed beforehand. For example, it is between 10 minutes / °C and 45 minutes / °C, for example, 30 minutes / °C.

[0077] The process 100 then comprises a succession of steps 104 to 107 for each iteration, i, as will be detailed.

[0078] The process 100 comprises a set of two steps, referenced 104 and 105. During step 104 (MESS), system 1 measures the temperature Tz. During step 105 (DIFF), system 1 calculates the difference between the measured temperature Tz and the setpoint temperature for the second period, Tc2, i.e., the temperature that is to be reached. The entire 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.

[0079] When the ambient temperature Tz has reached the setpoint value Tc2 (for a change of period PI to P2), at time Mi5 the process 100 includes a step (CALC-Vaci) 106 of calculating a value corrected to the anticipation value, Vaci, using formula II, in which the activation time tai is equal to the time difference between the time M; where the setpoint temperature Tc2 is reached and the activation time ta, previous.

[0080] In other words, during step 106, Vaci=(Mi- ta;_i) / Tc2 is calculated.

[0081] During a step 107, called convergence (CONV), the new anticipation value VaN is determined; which depends on the corrected value Vac;.

[0082] At a minimum, the calculation is performed over two iterations. Thus, VaN2 is calculated according to the following formula III: VaN2 = (Va + Vac^H

[0083] Advantageously, the calculation is performed over four iterations. Thus, VaN4 is calculated according to the following formula IV:

[0084] VaN^ = + Vac^ / 4

[0085] Preferably, the calculation is performed over twenty iterations. Thus, VaN2o is calculated according to the following formula V:

[0086] (vtip 19 \ . E^ VaN m + Vac 20 ) / 2Q

[0087] More generally, one can choose to perform the calculation on a number U. In this case, VaNu is calculated according to the following formula VI:

[0088] Van v = j VaN m + Vac v ) / U

[0089] In [Fig.4], an example, of course non-limiting, of a 24H programming of the setpoint temperature in zone Z is given. On this daily schedule, a first period PI, night period, is defined between 0 and 6 a.m., then a second period P2, presence, is defined between 6 a.m. and 9 a.m., followed by a third period P3, absence, between 9 a.m. and 6 p.m. and a fourth period P4, presence, between 6 p.m. and 10 p.m. and finally a last period P5, night, from 10 p.m.

[0090] Each night period is, in the example of [Fig.4], associated with a setpoint 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.

[0091] According to this example, the anticipation value is fixed, and equal to 30 minutes / °C.

[0092] We now detail the implementation of process 100 on the example of [Fig.3], for each change of periods.

[0093] The anticipation of the second period P2 during the first period PI includes step 102 of measuring the air temperature in zone Z. During step 102, let us consider that a temperature Tz = 19°C is measured. During step 103, ta = Va * D = 30 * I21 - 191 = 60 minutes is calculated.

[0094] Thus, system 1 starts heating one hour before the programmed setpoint change.

[0095] 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, let us consider that we measure Tz = 20°C. During step 103, we calculate ta = Va * D = 30 * I = 15.5 - 201 = 135 minutes.

[0096] Thus, system 1 starts to cool down 135 minutes before the programmed setpoint change.

[0097] 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, let us consider that we measure Tz = 16°C. During step 103, we calculate ta = Va * D = 30 * I21 - 161 = 150 minutes.

[0098] Thus, system 1 starts to cool down 150 minutes before the programmed setpoint change.

[0099] 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, let us consider that we measure Tz = 21°C. During step 103, we calculate ta = Va * D = 30 * H 9 - 211 = 60 minutes.

[0100] Thus, system 1 starts to cool 60 minutes before the programmed setpoint change.

[0101] Referring again to [Fig. 3], the process 100 includes a step 108 (VIT) of changing the speed of the fan coil unit 3 based on the anticipation time ta. Thus, when the system 1 begins to heat or cool, at time ta, the speed of the fan coil unit 3 changes in order to reach the setpoint temperature at the time of the period change. The value of the anticipation time is determined over a period in which the fan speed has already changed. Since the anticipation time is variable, it is possible that the temperature will not be reached on time or that it will be reached too early. The system will adapt and correct the anticipation time for subsequent iterations.

[0102] For example, in the event of an increase in the setpoint temperature in heating mode, and conversely in the event of a decrease in the setpoint temperature in cooling mode, it is planned to anticipate the changes in setpoint temperature either at the speed level identical (therefore at a constant noise level) or at a higher speed level, but taking place in the absence of users.

[0103] As a result, the user benefits from greater comfort, since each setpoint temperature is reached at the chosen, programmed time. Furthermore, increasing the fan speed when users are absent and then reducing it once users are present greatly optimizes user comfort.

[0104] We now refer to figures 5 and 6 in order to better visualize the implementation of step 108.

[0105] As can be seen from these figures, the setpoint temperature (Te) is equal to 15.5°C from midnight to 6 a.m., then to 19°C between 6 a.m. and 5 p.m. and finally to 15.5°C from 6 p.m.

[0106] According to the prior art, the fan speed (curve V) increases from low speed to high speed at the 6 a.m. changeover and then decreases from high speed to low speed at the 6 p.m. changeover. Thus, the temperature Tz (curve Tz) in zone Z gradually increases from 6 a.m. to reach the expected setpoint temperature Tc2 around 8 a.m., at which point it stabilizes, before decreasing from 6 p.m. to reach the expected setpoint temperature Tc3 at 11 p.m.

[0107] According to method 100, starting from the anticipation time (around 3:30 a.m.), the fan speed (dashed curve) increases from low speed to high speed until the change of period at 6:00 a.m., then remains at low speed throughout the day. Thus, the temperature Tz (dashed curve) in zone Z gradually increases from 3:30 a.m. to reach the setpoint temperature Tc2 at 6:00 a.m., at which point it stabilizes, before decreasing from 6:00 p.m. to reach the expected setpoint temperature Tc3 at 11:00 p.m.

[0108] 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 changing the fan speed.

[0109] For example, process 100 includes a preliminary step of calculating the thermal power required to change the setpoint temperature. And, if the power required is greater than the power that system 1 can supply, process 100 includes a step of modifying the water outlet temperature TD.

[0110] Thus, in this case, the process 100 includes a calculation step 109 (CAL - TD) of a new water outlet temperature TD for the energy conversion equipment 2. The energy conversion equipment 2 defines the water outlet temperature TD as a function of all the system states. The temperature TD is then increased or decreased depending on whether a heating or cooling mode is activated. This change in water temperature TD allows the set temperature to be reached without changing the noise level in the room.

[0111] We now refer to [Fig.7] in order to better visualize the implementation of step 109.

[0112] As can be seen in this figure, the setpoint temperature Tc2 is 19°C. The temperature Tz in zone Z is 17.5°C. Since the thermal power required to reach Tc2 is greater 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, in step 109, the temperature TD is switched to 45°C at the time of the period change P1-P2.

[0113] In this case, with the fan speed remaining unchanged at the minimum level, the setpoint temperature Tc2 is reached around 8 a.m., when the temperature in the hydraulic circuit reaches 45°C. The temperature measurement can be taken at the emitter or at the energy conversion equipment.

[0114] We now refer to [Fig. 8], which presents a flowchart of process 100 in its embodiment with a 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 setpoint temperature Tc2 during step 108. Once the temperature Tc2 is reached, system 1 decreases the fan speed (second rectangle).

[0115] We now refer to [Fig. 9], which presents a flowchart of process 100 in its iterative anticipation value embodiment. 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 fixed at 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 setpoint temperature Tc2 during step 108. Once the temperature Tc2 is reached, system 1 decreases the fan speed (second rectangle). As already explained, then, during steps 104 to 107, the anticipation time is corrected.

[0116] Reference is now made to [Fig. 10], which presents a flowchart relating more specifically to step 109. As can be seen from this figure, when it is necessary to change the fan speed (first diamond), the power conversion equipment 2 and the emitter 3 exchange information (first rectangle) to allow the calculation of a new water outlet temperature TD of the power conversion equipment 2 (second rectangle). Once determined, the new water outlet temperature is applied by process 100 (third rectangle).

[0117] We now cite some non-limiting examples which can be combined with each other.

[0118] According to a first example, the emitter 3 is a fan coil unit 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. In presence and night modes, the fan speed is limited to a medium value for presence 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.

[0119] Transmitter 3 is equipped with a tangential fan. The fan coil unit 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 the energy conversion equipment 2, a heat pump, regarding the optimum water supply temperature, via a Zigbee radio connection.

[0120] Depending on the modes defined during the day, the control module 18 adjusts its water temperature and communicates it to the heat pump 2 in order to maintain the room temperature while limiting the fan speeds. Based on changes in the setpoint temperature, the control module 18 anticipates the change and increases the fan speed to reduce noise during periods of occupancy or nighttime use.

[0121] According to a second example, the fan coil unit 3 is equipped with the human-machine interface 19, on which three speed settings are possible (low, medium, and high). These speeds are defined temporally by day of the week. The fan coil unit 3 is equipped with axial fans. It is also possible to activate a heating mode and a cooling mode.

[0122] 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 the optimum water outlet temperature to a heat pump via a Zigbee radio connection.

[0123] Depending on the speeds set during the day, the control module 18 adjusts its water temperature and communicates it to the heat pump 2 in order to maintain the room temperature while limiting the fan speed. As the speed changes, the control module 18 anticipates the change and increases the fan speed to reduce noise during periods when the speed is reduced.

[0124] As can be seen from the above, process 100 and system 1 ensure a high level of acoustic comfort, due to the anticipation of period changes, which in particular allow the fans to operate at high speed during user absences, while maintaining satisfactory system 1 performance, allowing each desired user setpoint temperature to be reached.

Claims

Demands

1. A method for controlling a ventilation, heating and / or cooling system for an airflow (F) of a zone (Z), such as a living room, to a given setpoint temperature (Te), said system (1) comprising energy conversion equipment for supplying a heat transfer fluid (2) to a flow temperature (TD), at least one heat emitter (3) equipped with a variable-speed air ventilation means and a hydraulic circuit (4) for connecting the energy conversion equipment (2) to at least one heat emitter (3), the method (100) comprising a step of modifying the flow temperature of the heat transfer fluid (TD), when the given setpoint temperature (Te) is not reached after a predetermined period of time or when, after calculation,It is determined that the power required to reach the given setpoint temperature (Te) is greater than the power that the system (1) can supply, taking into account the speed level of said ventilation means, said speed of said ventilation means being kept unchanged.

2. A control method according to claim 1, characterized in that the speed of said ventilation means is less 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 airflow (F) of a zone (Z), such as a living room, to a given setpoint temperature (Te), the system (1) comprising energy conversion equipment for supplying a heat transfer fluid (2) at a supply temperature (TD), at least one heat emitter (3) equipped with a variable-speed air ventilation means and a hydraulic circuit (4) for connecting the energy conversion equipment (2) to said at least one heat emitter (3), the system being programmed to deliver, according to a time sequence of at least a first period (PI) and a second period (P2), a setpoint temperature (Tel; Tc2) and a speed level of said ventilation means being associated with each period, the system comprising a unit of control configured to implement the piloting method according to claim 1 or 2.

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

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

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