JP6004780B2 - Regenerative floor heating system and control method for regenerative floor heating system - Google Patents

Description

  The present invention relates to a regenerative floor heating system and a control method for a regenerative floor heating system in an indoor space of a house.

  In floor heating, it is common to form a heat insulation layer under the floor heating panel in order to increase the amount of heat radiated indoors. In such a configuration, hot water is supplied to the floor heating panel. When stopped, there was a problem that the floor surface temperature dropped rapidly, and the temperature of the entire room dropped in the early morning. For this reason, the thermal storage type floor heating system which suppresses the fall of temperature by interposing a thermal storage layer between a floor heating panel and a heat insulation layer is known (for example, refer to patent documents 1).

JP-A-9-273775

  However, in the above-described regenerative floor heating system, the performance of the control portion that sets the hot water supply time is not considered to be a regenerative type. Heat storage type floor heating system can suppress the supply of heat medium such as hot water compared with non-heat storage type floor heating system, but it does not consider that the performance of the control part is heat storage type In such a case, useless amount of heat was input exceeding the amount of heat necessary for the heat storage type floor heating system. From the above, there has been a demand for a heat storage type floor heating system and a control method for the heat storage type floor heating system that can input an appropriate amount of heat according to the heat storage performance.

  The present invention has been made to solve such problems, and provides a heat storage type floor heating system and a control method for the heat storage type floor heating system that can input an appropriate amount of heat according to the heat storage performance. For the purpose.

  A heat storage type floor heating system according to the present invention includes a heat medium circulating layer that is heated by a heat medium, a floor that includes at least a heat storage layer that stores heat released from the heat medium circulating layer, and an indoor target in which the floor is provided. The temperature setting means for setting the temperature T1, the temperature measuring means for measuring the measured temperature T2 in the room, the target temperature T1 and the measured temperature T2 are compared, and a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 is Comparison means for determining whether or not the medium supply threshold value is greater than the medium supply threshold; supply time setting means for setting the heat medium supply time and the heat medium supply stop time in one cycle set at a predetermined time interval; and supply time A heat medium supply means for supplying a heat medium to the heat medium circulation layer based on the setting by the setting means, and the supply time setting means is a value obtained by subtracting the target temperature T1 from the measured temperature T2 by the comparison means. 3 is determined to be larger than the heat medium supply threshold, the heat medium supply time is set to 0 in one cycle, and all the time in the cycle is set as the heat medium supply stop time. To do.

  In this heat storage type floor heating system, the heat medium supply time in one cycle can be set based on the value T3 calculated by comparing the target temperature T1 and the measured temperature T2. In addition, when the value T3 calculated by comparing the target temperature T1 and the measured temperature T2 is larger than the heat medium supply threshold that is a predetermined threshold, control is performed so that the heat medium is not supplied in one cycle. can do. By setting the heat medium supply threshold to a value that can maintain the set temperature with only the heat stored in the heat storage layer even if the heat medium supply is controlled to be completely stopped during one cycle, the user is uncomfortable. It is possible to completely stop the supply of the heat medium during one cycle without feeling the above. In this way, wasteful heat input can be suppressed by controlling the supply of the heat medium during one cycle to be completely stopped. From the above, according to the regenerative floor heating system according to the present invention, it is possible to provide a regenerative floor heating system that can input an appropriate amount of heat according to the heat storage performance.

  Further, in the heat storage type floor heating system according to the present invention, it is preferable that the supply time setting means sets the heat medium supply time shorter and the heat medium supply stop time longer as the heat storage performance of the heat storage layer is higher. When the heat storage performance is high, the temperature decreases slowly, so that the set temperature can be maintained even with a short heat medium supply time. Accordingly, by setting the heat medium supply time to be shorter as the heat storage performance is higher, useless heat input can be suppressed. That is, an appropriate amount of heat can be input according to the heat storage performance.

  The heat storage type floor heating system according to the present invention further includes threshold setting means for setting a heat medium supply threshold, and the threshold setting means may set the heat medium supply threshold smaller as the heat storage performance of the heat storage layer is higher. preferable. When the heat storage performance is high, the method of decreasing the temperature is slow. Therefore, when the heat medium supply threshold is set to a small value, that is, when the value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 is small, the heat medium is not supplied. The set temperature can be maintained even if controlled to. Therefore, useless heat input can be suppressed by reducing the heat medium supply threshold as the heat storage performance is higher. That is, an appropriate amount of heat can be input according to the heat storage performance.

  The heat storage type floor heating system according to the present invention further comprises input heat amount setting means for setting the amount of heat input to the heat medium circulation layer, and the input heat amount setting means has a high heat storage performance of the heat storage layer and has a measurement temperature. It is preferable to set a larger amount of input heat as T2 is lower, a lower heat storage performance of the heat storage layer, and a lower amount of input heat as measurement temperature T2 is higher. The amount of input heat required when starting up the regenerative floor heating system is increased as the heat storage performance of the heat storage layer is higher and the measurement temperature T2 is lower. It can be performed.

  Moreover, the control method of the regenerative floor heating system according to the present invention includes a temperature setting step for setting the indoor target temperature T1, a temperature measuring step for measuring the indoor measured temperature T2, a target temperature T1 and a measured temperature T2. The comparison step for determining whether or not a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 is larger than the heat medium supply threshold, and the heat medium in one cycle set at a predetermined time interval A supply time setting step for setting the supply time and the heat medium supply stop time, and a heat medium supply step for supplying the heat medium to the heat medium circulation layer that is heated by the heat medium based on the setting in the supply time setting step. In the supply time setting step, it is determined that a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 in the comparison step is larger than the heat medium supply threshold. When the can, and sets as a heat medium supply stop time, all the time of the heating medium supply time cycle to 0 in the one cycle. The control method of this heat storage type floor heating system can have the same effect as the above-mentioned heat storage type floor heating system.

  ADVANTAGE OF THE INVENTION According to this invention, the control method of the thermal storage type floor heating system and the thermal storage type floor heating system which can perform an appropriate amount of heat | fever input according to thermal storage performance can be provided.

It is a schematic block diagram of the thermal storage type floor heating system which concerns on embodiment of this invention. It is a flowchart which shows the control processing content of the thermal storage type floor heating system which concerns on embodiment of this invention. It is a cycle operation image of the regenerative floor heating system according to the embodiment of the present invention.

  Hereinafter, an embodiment of a regenerative floor heating system will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a regenerative floor heating system according to an embodiment of the present invention. As shown in FIG. 1, the regenerative floor heating system 1 according to this embodiment includes a floor 10, a control unit 20 that controls the entire system, a temperature setting unit 31 that sets a target temperature of an indoor space, A temperature measuring unit 32 that measures the temperature of the space and a water heater 41 for supplying heating water are provided.

  The floor 10 circulates heating water (heat medium) and has a floor heating function. The floor 10 includes a floor finishing layer 11, a floor heating panel 12, an ALC panel 13, and a heat insulating layer 14.

  The floor finishing layer 11 is a floor finishing material that allows the user to feel heat directly from the feet. As the floor finishing layer 11, wood flooring made of parquet, tatami for floor heating, vinyl floor, or the like is used.

  The floor heating panel 12 is installed in the lower part of the floor finishing layer 11 and is a heat medium circulation layer that heats the floor finishing layer 11 with a heat medium. The floor heating panel 12 is provided with a pipe, which radiates heat by the effect of the heat medium flowing through the pipe, warms the floor finishing layer 11 and warms the room. The floor heating panel 12 includes those that are separated from the floor finishing layer 11 and those that are integrated with the floor finishing layer 11. For example, warm water is used as the heat medium.

  The ALC (Autoclaved Light weight Concrete) panel 13 is installed in the lower part of the floor heating panel 12 and is a heat storage layer that stores heat released from the floor heating panel 12. The ALC panel 13 supplies the stored heat to the indoor side after the heat medium is no longer supplied to the floor heating panel 12, that is, when the heat radiation from the floor heating panel 12 is suppressed, so that the floor surface temperature can be reduced. Slow down. The ALC panel 13 can also store solar heat. In addition, ALC is a lightweight cellular concrete, and is a concrete with a light weight and high heat insulation. In addition to the ALC panel, a concrete slab or the like can be applied as a heat storage layer.

  The heat insulation layer 14 is installed in the lower part of the ALC panel 13, and greatly reduces heat radiation to the lower side of the ALC panel 13. The heat insulation layer 14 reduces the heat radiation to the lower side of the ALC panel 13, thereby improving the thermal efficiency and saving energy. As the heat insulating layer 14, mineral heat insulating materials, plastic heat insulating materials, and the like are suitable, and examples thereof include phenol foam, glass wool, rock wool, and hard urethane foam.

  The control unit 20 is an electronic control unit that controls the regenerative floor heating system 1. The control unit 20 includes, for example, a CPU as a main component, and includes a ROM, a RAM, an input signal circuit, an output signal circuit, a power supply circuit, and the like.

  The control unit 20 includes a comparison unit 21, a supply time setting unit 22, a threshold setting unit 23, and an input heat amount setting unit 24.

  The comparison unit 21 is a comparison unit that compares the target temperature T1 set by the temperature setting unit 31 with the measurement temperature T2 measured by the temperature measurement unit at a constant time interval, and subtracts the target temperature T1 from the measurement temperature T2. It has a function of determining whether or not the value T3 is larger than the heat medium supply threshold.

  The supply time setting unit 22 has a function as supply time setting means for setting the heat medium supply time and the heat medium supply stop time in one cycle set at a predetermined time interval. Here, one cycle is determined to be, for example, 20 minutes, and the heat medium supply time, which is the time for which the heat medium is supplied by the heating water heater 41, and the heat medium supply, which is the time for which the supply of the heat medium is stopped. And stop time. The cycle is repeated while the regenerative floor heating system 1 is operating. For the setting of the heat medium supply time and the heat medium supply stop time by the supply time setting unit 22, an appropriate pattern is selected from a plurality of heat medium supply control patterns in which a combination of the heat medium supply time and the heat medium supply stop time is determined. Is done. For example, if the predetermined time (one cycle) is set to 20 minutes, pattern 1: heat medium supply time (8 minutes) heat medium supply stop time (12 minutes), pattern 2: heat medium supply time (10 minutes) Heat medium supply stop time (10 minutes). The supply time setting unit 22 sets the heat medium supply time in one cycle shorter and sets the heat medium supply stop time longer as the value T3 calculated by the comparison unit 21 minus the target temperature T1 is larger. It has the function to do. For example, the supply time setting unit 22 selects a pattern having a shorter heat medium supply time as the value T3 is larger.

  In addition, the supply time setting unit 22 sets the heat medium supply time within a predetermined time when the value T3 calculated by the comparison unit 21 minus the target temperature T1 is larger than the heat medium supply threshold. And a function of selecting a pattern (pattern 0) that sets all the predetermined time as the heat medium supply stop time.

  The supply time setting unit 22 has a function of setting the heat medium supply time to be shorter and setting the heat medium supply stop time to be longer as the heat storage performance of the ALC panel 13 is higher.

  The threshold setting unit 23 has a function as threshold setting means for setting a heat medium supply threshold. The heat medium supply threshold is a value that determines whether or not to stop the heat medium supply in one cycle. Here, it is preferable to set the heat medium supply threshold to a value that allows the set temperature to be maintained only by the heat stored in the ALC panel 13 even if the heat medium supply is completely stopped during one cycle. The heating medium supply threshold is preferably set to, for example, 1.0 ° C. to 2.2 ° C., and more preferably set to 2.4 ° C. Moreover, it is preferable that the threshold value setting part 23 sets a heat medium supply threshold value small, so that the heat storage performance of the ALC panel 13 which is a heat storage layer is high.

  The input heat amount setting unit 24 has a function as input heat amount setting means for setting the heat amount of the heat medium supplied to the floor heating panel 12 by the water heater 41. The amount of heat input can be set based on various conditions. For example, the set amount of input heat can be set according to the heat storage performance of the ALC panel 13 or the measured temperature T2. At the time of activation of the regenerative floor heating system 1 according to the present embodiment, it is possible to perform control to continuously supply a heat medium to the floor heating panel 12 in order to quickly warm the cold floor 10. The heat quantity setting unit 24 can set the input heat quantity at that time according to the heat storage performance of the ALC panel 13 and the measurement temperature T2. Specifically, as the heat storage performance of the ALC panel 13 is high and the measurement temperature T2 is low, the input heat amount is set to be large. As the heat storage performance of the heat storage layer is low and the measurement temperature T2 is high, the input heat amount is set to be small. The input heat amount setting unit 24 can set the heat amount by adjusting the flow rate and temperature of the heat medium.

  The temperature setting unit 31 has a function as temperature setting means for setting the indoor target temperature T1. The temperature setting unit 31 includes a temperature setting remote controller 31a and a temperature setting device 31b. The user operates the temperature setting remote controller 31a to select the target temperature T1, transmits a signal, and the temperature setting device 31b installed on the indoor wall or the like receives the signal to set the target temperature T1. The temperature setting unit 31 transmits the set target temperature T1 to the control unit 20.

  The temperature measurement unit 32 has a function as a temperature measurement unit that measures the indoor measurement temperature T2 using a temperature sensor. The temperature measurement unit 32 transmits the measured measurement temperature T2 to the control unit 20.

  The water heater 41 has a function as a heat medium supply unit that supplies a heat medium to the piping of the floor heating panel 12 based on the setting content from the input heat amount setting unit 24. The water heater for heating 41 is a gas water heater, and for example, a high-efficiency heat source machine or a heat pump can be used.

  Next, with reference to FIG. 2, operation | movement of the thermal storage type floor heating system 1 which concerns on embodiment of this invention is demonstrated. FIG. 2 is a flowchart showing the control processing contents of the regenerative floor heating system 1 according to the embodiment of the present invention. Before the control process shown in FIG. 2 is started, the setting of the heat medium supply threshold by the threshold setting unit 23 and the input heat amount by the input heat amount setting unit 24 needs to be completed.

  As shown in FIG. 2, first, the temperature setting unit 31 sets the indoor target temperature T1 (step S10, temperature setting step). The target temperature T1 to be set is determined according to the content specified by the user with the temperature setting remote controller 31a. Next, the temperature measurement part 32 measures indoor measurement temperature T2 (step S11, temperature measurement step).

  Next, the comparison unit 21 compares the target temperature T1 set by the temperature setting unit 31 with the measured temperature T2 measured by the temperature measurement unit 32 (step S12, comparison step). The comparison unit 21 calculates a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2.

  As a result of the comparison in S12, the supply time setting unit 22 determines whether or not a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 is larger than the heat medium supply threshold of 2.4 ° C. (step S13, Supply time setting step). As a result of the comparison, when it is determined that “measured temperature T2−target temperature T1 = value T3” is higher than 2.4 ° C., the supply time setting unit 22 sets the heat medium supply time in one cycle. “Pattern 0” not to be selected is selected (step S14, supply time setting step). In the cycle in which “Pattern 0” is set, since the heat medium is not supplied, the control process of the regenerative floor heating system 1 is completed.

  On the other hand, as a result of the comparison in step S13, when it is determined that “measured temperature T2—target temperature T1 = value T3” is 2.4 ° C. or less, the supply time setting unit 22 generates heat from a plurality of patterns. A pattern other than “pattern 0”, which is a pattern for which the medium supply time is not set, is selected (step S15, supply time setting step). The pattern selected in this case is set based on “measured temperature T2−target temperature T1 = value T3”, in which the heat medium supply time becomes longer as the value T3 is smaller.

  When a pattern other than “Pattern 0” is set in S15, it is necessary to supply a heat medium. Therefore, the water heater 41 is heated according to the heat medium supply time of the pattern set by the supply time setting unit 22 in S15. A medium is supplied (step S16, heat medium supply step). The above is the control processing content of the regenerative floor heating system 1. The control process is repeatedly performed.

  Next, the cycle operation of the regenerative floor heating system will be described with reference to FIG. FIG. 3 is a cycle operation image of the regenerative floor heating system according to the embodiment of the present invention.

  For example, one cycle of the regenerative floor heating system 1 is 20 minutes, and as a heat medium supply control pattern, pattern 1: heat medium supply time (8 minutes) heat medium supply stop time (12 minutes), pattern 2: heat medium Assume that the supply time (10 minutes), the heat medium supply stop time (10 minutes), and the pattern 0: the heat medium supply time (0 minutes) and the heat medium supply stop time (20 minutes) are set. Initially, “measured temperature T2−target temperature T1 = value T3” is relatively small, and pattern 2 is selected in cycle A by supply time setting unit 22. Then, “measured temperature T2−target temperature T1 = value T3” when determining the pattern of cycle B is larger than the previous time, and pattern 1 is selected in cycle B. Since “measured temperature T2−target temperature T1 = value T3” when determining the pattern of cycle C is larger than the heat medium supply threshold (2.4 ° C.), pattern 0 is selected in cycle C. Yes. Thus, the optimum heat medium supply control pattern is selected by comparing the measured temperature T2 to the target temperature T1 for each cycle. If the pattern 0 continues to be selected, a cycle in which the heat medium supply is stopped (heat medium supply time is 0 minutes) will continue.

  Next, the operation and effect of the regenerative floor heating system 1 according to the embodiment of the present invention will be described.

  In the regenerative floor heating system 1, the heat medium supply time in one cycle can be set based on the value T3 calculated by the comparison unit 21 comparing the target temperature T1 and the measured temperature T2. In addition, when the value T3 calculated by comparing the target temperature T1 and the measured temperature T2 is larger than the heat medium supply threshold that is a predetermined threshold, control is performed so that the heat medium is not supplied in one cycle. can do. In the present embodiment, the heat medium supply threshold is set to a value that can maintain the set temperature with only the heat stored in the ALC panel 13 even if the heat medium supply is controlled to be completely stopped during one cycle. Therefore, it is possible to control so that the supply of the heat medium during one cycle is completely stopped without causing the user to feel uncomfortable. By controlling the supply of the heat medium during one cycle to be completely stopped, it is possible to suppress the useless amount of heat input exceeding the necessary amount of heat.

  Further, the supply time setting unit 22 can suppress wasteful heat input by setting the heat medium supply time to be shorter and the heat medium supply stop time to be set longer as the heat storage performance of the ALC panel 13 is higher. An appropriate amount of heat can be input according to the heat storage performance.

  Further, a threshold value setting unit 23 for setting a heat medium supply threshold value is further provided, and the threshold value setting unit 23 sets the heat medium supply threshold value smaller as the heat storage performance of the ALC panel 13 is higher, thereby preventing more wasteful heat input. can do.

  The heat input setting unit 24 further sets the amount of heat input to the floor heating panel 12, and the input heat amount setting unit 24 increases the heat storage performance of the ALC panel 13 and increases the input heat amount as the measurement temperature T2 is lower. By setting the heat storage performance of the ALC panel 13 to be lower and setting the input heat amount to be smaller as the measurement temperature T2 is higher, it is possible to input an appropriate amount of heat according to the heat storage performance and the measurement temperature T2.

  Examples of the present invention will be described below. The present invention is not limited to these examples.

[Example 1]
In the floor 10 as an example, an ALC panel 13 was laid on the back surface of the floor heating panel 12, and a material having a heat insulating function (foamed polystyrene foam) was laid thereunder. On the other hand, in the floor 10 as a comparative example, a material having a heat insulation function (foamed polystyrene foam) was laid on the back surface of the floor heating panel 12. The control device was set so that the room temperature was 20 ° C. In the comparative example, the high temperature operation time (hot dash time) at startup was 60 minutes. The temperature of the heat medium of the water heater 41 at that time was set to 80 ° C. In the comparative example, control is performed such that the heat medium supply control pattern is selected according to a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2, and the pattern with the shortest heat medium supply time is “Pattern 1 (Heat medium supply time”). 8 minutes) ". The temperature of the heat medium of the water heater 41 at that time was set to 40 ° C. In the examples, the high-temperature operation time (hot dash time) at the time of startup was 30 minutes. Further, in addition to the patterns that can be selected in the comparative example, when the value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 exceeds 3 ° C., the control for completely stopping the supply of the heat medium in one cycle (“pattern 0”). Selected). Other conditions are the same as in the comparative example.

  In Examples and Comparative Examples, floor heating was operated at 6-9 o'clock and 17-24 o'clock of the day, and this was continued for one week, and the total input heat amount, room temperature, and floor surface temperature were compared. As a result, both the room temperature and the floor surface temperature of the example (with the ALC panel 13) maintained a higher level than the comparative example (without the ALC panel 13). Furthermore, the total input heat amount was 13% lower in the example (with the ALC panel 13) than in the comparative example (without the ALC panel 13).

[Example 2]
In both the floor 10 as an example and the floor 10 as a comparative example, an ALC panel 13 was laid on the back surface of the floor heating panel 12, and a material having a heat insulating function (foamed polystyrene foam) was laid thereunder. The floor 10 according to the embodiment is controlled so that the hot dash time at startup is 30 minutes and the cycle operation interval is 20 minutes, and the heat medium supply is not performed in one cycle (pattern 0). .4 ° C.). On the other hand, the floor 10 as a comparative example has a hot dash time at startup of 60 minutes, a cycle operation interval of 20 minutes, and does not provide a heat medium supply threshold value that controls the heat medium supply in one cycle. The heat medium supply time was at least 8 minutes (pattern 1).

  In both Examples and Comparative Examples, the input heat amounts in the period from January to March were compared. As a result, the cumulative input heat amount over the entire period was 3753.7 MJ in the example and 5369.4 MJ in the comparative example, respectively. In the Example, it turned out that the total input calorie | heat amount can be reduced 34% compared with a comparative example.

DESCRIPTION OF SYMBOLS 1 ... Thermal storage type floor heating system, 10 ... Floor, 11 ... Floor finishing layer, 12 ... Floor heating panel, 13 ... ALC panel, 14 ... Heat insulation layer, 20 ... Control part, 21 ... Comparison part, 22 ... Supply time setting part , 23 ... Threshold setting unit, 24 ... Input heat amount setting unit, 31 ... Temperature setting unit, 32 ... Temperature measuring unit, 41 ... Water heater for heating.

Claims (4)

A heating medium circulating layer for heating by a heating medium, and a floor comprising at least a heat storage layer for storing heat released from the heating medium circulating layer;
Temperature setting means for setting a target temperature T1 in the room where the floor is provided;
Temperature measuring means for measuring the indoor measurement temperature T2,
Comparing means for comparing the target temperature T1 with the measured temperature T2 and determining whether a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 is greater than a heat medium supply threshold;
Supply time setting means for setting the heat medium supply time and the heat medium supply stop time in one cycle set at a predetermined time interval; and
Heat medium supply means for supplying the heat medium to the heat medium circulation layer based on the setting by the supply time setting means,
If the value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 is greater than the heat medium supply threshold by the comparison means, the supply time setting means determines that the heat time is within the one cycle. The medium supply time is set to 0, and all the times in the cycle are set as the heat medium supply stop time. The higher the heat storage performance of the heat storage layer, the shorter the heat medium supply time, and the heat medium supply stop time. Set longer ,
Regenerative floor heating system. Further comprising threshold setting means for setting the heat medium supply threshold;
The threshold setting means includes
Setting the heat medium supply threshold smaller as the heat storage performance of the heat storage layer is higher,
The regenerative floor heating system according to claim 1 . It further comprises input heat amount setting means for setting the amount of heat input to the heat medium circulation layer,
The input heat amount setting means includes
The heat storage performance of the heat storage layer is high, and as the measurement temperature T2 is low, the input heat amount is set to be large,
The heat storage performance of the heat storage layer is low, and the input heat quantity is set to be smaller as the measurement temperature T2 is higher,
The regenerative floor heating system according to claim 1 or 2 . A control method for a regenerative floor heating system,
A temperature setting step for setting a target temperature T1 in the room;
A temperature measurement step of measuring the indoor measurement temperature T2,
A comparison step of comparing the target temperature T1 with the measured temperature T2 and determining whether a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 is larger than a heat medium supply threshold;
A supply time setting step for setting a heat medium supply time and a heat medium supply stop time in one cycle set at a predetermined time interval;
A heat medium supply step for supplying a heat medium to a heat medium circulation layer that performs heating with a heat medium based on the setting in the supply time setting step, and
In the supply time setting step, when it is determined that a value T3 obtained by subtracting the target temperature T1 from the measured temperature T2 in the comparison step is larger than a heat medium supply threshold, The heat medium supply time is set to 0 and all the time in the cycle is set as the heat medium supply stop time, and the heat storage performance of the heat storage layer that stores the heat released from the heat medium circulation layer is higher as the heat medium supply time is higher. Set the heat medium supply stop time long ,
A control method for a regenerative floor heating system.

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