JP2010007941A - Hot water supply evaluation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water supply evaluation system for evaluating a hot water supply system by reproducing past hot water supply load (load pattern, load amount). <P>SOLUTION: The hot water supply evaluation system evaluates the hot water supply system including a water heater 11 by reproducing the past hot water supply load. A controller 122 of the hot water supply evaluation system calculates an average hot water supply flow rate in a set unit time zone based on a hot water supply flow rate in the set unit time zone, compares the calculated average hot water supply flow rate with a hot water supply threshold value, and determines partial hot water supply when the average hot water supply flow rate is smaller than the hot water supply threshold value. When the partial hot water supply is determined, switch to hot water supply time using the hot water supply threshold value as the average hot water supply flow rate is performed. When hot water supply load determined to be partial hot water supply is reproduced, the controller 122 performs reproduction operation of the hot water supply system for the switched hot water supply time by using the average hot water supply flow rate of the hot water supply threshold value. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hot water supply evaluation system that evaluates a hot water supply system including a hot water supply device that supplies hot water.

  Conventionally, in a hot water supply system including a hot water supply device, predicted hot water supply load data for the day is created based on a past hot water supply load, and operation control of the hot water supply system is performed based on the created predicted hot water supply load data (for example, Patent Documents). 1).

  In such a hot water supply system, an evaluation test is performed in order to evaluate reliability, energy saving, and the like, and the operation control method of the hot water supply system is improved using the evaluation test result.

JP 2004-48838 A

  However, in the conventional evaluation test, evaluation is performed by operating a hot water supply system with reference to past hot water supply load data. However, it takes time and effort for the evaluation, and the energy saving performance of equipment such as a hot water supply device is also difficult. There is a problem that it is difficult to quantitatively evaluate evaluations such as improvement.

  An object of the present invention is to provide a hot water supply evaluation system capable of easily and accurately evaluating a hot water supply system by reproducing a past hot water supply load (load pattern, load amount).

The hot-water supply evaluation system according to claim 1 of the present invention is a hot-water supply evaluation system for evaluating a hot-water supply system including a hot-water supply device by reproducing a past hot-water supply load,
A controller for reproducing the hot water supply system based on a past hot water supply load, and the controller calculates an average hot water flow rate for calculating an average hot water flow rate in the set unit time zone based on a hot water flow rate in the set unit time zone. And the average hot-water supply flow calculated by the average hot-water supply calculating means and a hot-water supply threshold value, and when the average hot-water supply flow rate is smaller than the hot-water supply threshold value, determine partial hot water supply And a changed hot water supply time calculation means for changing the hot water supply threshold to an average hot water supply flow rate based on the determination of the partial hot water supply of the partial hot water supply determination means,
When reproducing the hot water supply load determined to be the partial hot water supply, the controller reproduces the hot water supply system over the changed hot water supply time with the average hot water supply flow rate of the hot water supply threshold value.

  Further, in the hot water supply evaluation system according to claim 2 of the present invention, the controller further includes a hot water supply and feed means for postponing the hot water supply load, and reproduces the hot water supply load determined to be partial hot water supply. When there is a hot water supply load in a unit time zone following the unit time zone to be reproduced, the hot water supply post-feeding means sets a changed hot water supply time for hot water supply with an average flow rate of the hot water supply threshold value to the subsequent unit time zone. It is characterized by being post-fed so as to be continuous.

  Further, in the hot water supply evaluation system according to claim 3 of the present invention, the controller further includes a heat amount buffer for buffering the amount of hot water supply, a buffer heat amount calculating means for adding the amount of hot water supply for a unit time, and a hot water supply load. Reproducible hot water calorie calculating means for calculating the hot water supply calorie at the time of reproduction, and remaining buffer calorie calculating means for calculating the remaining buffer hot water calorie of the heat quantity buffer, the buffer calorie calculating means at the time of starting the reproduction hot water supply And, at the start of the unit time zone, the hot water supply heat amount of the unit time zone is added to the heat amount buffer, and when the remaining buffer hot water supply amount by the remaining buffer heat amount calculation means becomes zero, the reproduction hot water supply operation ends.

  Further, in the hot water supply evaluation system according to claim 4 of the present invention, when the remaining buffer hot water heat amount by the remaining buffer heat amount calculation means becomes zero in a specific unit time zone, the next following the specific unit time. When there is a hot water supply load in a unit time zone, the buffer heat amount calculation means adds the hot water heat amount of the next unit time zone to the heat amount buffer when the remaining buffer hot water heat amount becomes zero, and performs a reproducible hot water operation. It is characterized by being continued.

Moreover, the hot water supply evaluation system according to claim 5 of the present invention is a hot water supply evaluation system for evaluating a hot water supply system including a hot water supply device by reproducing a past hot water supply load,
A controller for reproducing the hot water supply system based on a past hot water supply load, the controller includes additional data extraction means for extracting additional hot water supply load data up to a predetermined time ahead, and up to the predetermined time ahead Bathing data extraction means for extracting bathing hot water supply load data, and bathing / bathing determination means for determining whether the hot water supply load related to the bathtub is retreating or bathing,
The rebirth / bath tension determination means first shows the bath tension hot water load data by the bath tension data extraction means in the predetermined time range up to the predetermined time ahead, and the bath tension hot water load data is the bath tension setting time. When it appears continuously as described above, it is characterized in that it is determined as a bath.

  Furthermore, in the hot water supply evaluation system according to claim 6 of the present invention, when the reheating / bath tension determination unit determines that the bath is full, the controller opens the drain valve of the bathtub based on the determination result of the bath tension. The water in the bathtub is drained.

  According to the hot water supply evaluation system according to claim 1 of the present invention, for example, various data such as the hot water supply load data of the hot water supply system is acquired as the data acquisition time interval, for example, every second, and the various data thus acquired is acquired. For example, when the reproduction operation is performed every minute as the data reproduction time interval, the reproduction operation is performed after being converted into data (hot water supply load data or the like) averaged in a set unit time zone corresponding to the data reproduction time interval. For this reason, with respect to the hot water flow rate, the average hot water flow rate calculating means calculates the average hot water flow rate in the set unit time zone based on the hot water flow rate in the set unit time zone, and the partial hot water determining means The flow rate and the hot water supply threshold value are compared, and when the average hot water supply flow rate is smaller than the hot water supply threshold value, it is determined as partial hot water supply, and the changed hot water supply time calculation means determines the hot water supply threshold based on the determination of partial hot water supply. Since the value is changed to the hot water supply time with the average hot water flow rate, there will be no inconveniences such as the hot water supply device not working during the reproduction operation, and the past hot water load data will be reproduced as faithfully as possible. Can do. Generally, in a hot water supply device, the minimum operation flow rate is set so that the hot water supply operation is performed reliably, and the hot water supply device is configured not to operate at a flow rate less than the minimum operation flow rate. The flow rate value above this minimum operating flow rate is set as the hot water supply threshold value, and at the time of reproducible operation, it is operated at the hot water supply flow rate at this hot water supply threshold value. Reproducible operation as faithfully as possible.

  Further, according to the hot water supply evaluation system according to claim 2 of the present invention, when reproducing the hot water supply load determined to be partial hot water supply, there is a hot water supply load in a unit time zone subsequent to the unit time zone to be reproduced. Sometimes, the post-hot water feeding means post-feeds the hot water changing hot water supply time by the hot water supply threshold so that it continues in the subsequent unit time zone, so that a series of hot water in this unit time zone and the subsequent unit time zone is continuous. It is possible to prevent the hot water supply device from being repeatedly operated and stopped during the reproduction operation.

  Further, according to the hot water supply evaluation system according to claim 3 of the present invention, the concept of a heat quantity buffer is used at the time of reproducing operation of the hot water supply operation, and the buffer heat amount calculation means adds the hot water supply heat quantity per unit time, and the reproduced hot water supply heat quantity. The calculation means calculates the amount of hot water supply when reproducing the hot water supply load, the remaining buffer heat amount calculation means calculates the remaining buffer hot water amount of heat of the heat amount buffer, and this buffer heat amount calculation means is used at the start of reproduction hot water supply and at the start of the unit time zone. When the remaining buffer hot water calorie by the remaining buffer calorie calculation means becomes zero (zero), the reproduced hot water operation ends. It is possible to drive with more faithful reproduction.

  According to the hot water supply evaluation system according to claim 4 of the present invention, when the remaining buffer hot water supply heat amount by the remaining buffer heat amount calculation means becomes zero in the specific unit time zone, the next following the specific unit time is performed. When there is a hot water supply load in the unit time zone, the buffer calorie calculation means adds the hot water supply heat amount in the next unit time zone to the heat amount buffer when the remaining buffer hot water calorie amount becomes zero. The hot water supply load in the next unit time zone is reproduced as a series of hot water supply operations, and the past hot water supply loads can be reproduced as faithfully as possible while avoiding repeated operation and stoppage of the hot water supply device.

  Moreover, according to the hot water supply evaluation system of claim 5 of the present invention, the reheating / bath tension determination means performs bath tension data in a predetermined time range up to a predetermined time (for example, 60 minutes) when performing the reproduction operation. When bathing hot water supply load data by the extraction means appears first, and this bathing hot water supply load data appears continuously for more than the bathing set time, it is determined that the bath is full. The bathing operation is performed continuously for more than the set time (for example, 5 minutes), and this prevents the bathtub from being blown even if the additional cooking operation is performed later, and avoids the occurrence of emptying of the bathtub. Reproducible operation can be performed.

  Further, in the hot water supply evaluation system according to claim 6 of the present invention, when the reheating / bathing determination means determines that the bath is full, the controller opens the drain valve of the bathtub and drains the water in the bathtub. Before the stretching operation is reproduced, the water in the bathtub is emptied, and a desired bath tension reproducing operation can be performed.

  Hereinafter, an embodiment of a hot water supply evaluation system according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a system diagram schematically showing an embodiment of a hot water supply evaluation system, FIG. 2 is a view showing data necessary for performing a reproduction operation of the hot water supply evaluation system of FIG. 1, and FIG. 1 is a block diagram showing a part of a control system of the hot water supply evaluation system of FIG. 1, FIG. 4 is a diagram for explaining partial hot water supply by the control system of FIG. 3, and FIG. 5 is a control of FIG. 6 is a flowchart for explaining a flow of partial hot water supply by the system, FIG. 6 is a diagram showing a part of data of hot water supply load reproduced by the control system of FIG. 3, and FIG. 7 is a control system of FIG. FIG. 8 is a flow chart showing the flow of the reproduced hot water supply operation by the control system of FIG. 3, and FIG. 9 is a flow chart of the control system of the hot water evaluation system of FIG. FIG. 10 is a block diagram showing another part, and FIG. Shows a part of a hot water supply load data to be reproduced operated by control system, Figure 11 is a flowchart showing a flow of determination bath clad by the control system of FIG.

  In FIG. 1, this hot water supply evaluation system is an evaluation system for reproducing past hot water supply. In this embodiment, the hot water supply evaluation system is incorporated in the evaluation system for evaluating a home cogeneration system. . This home cogeneration evaluation system is for reproducing various loads consumed at home, namely, electric power load, hot water supply load (normal hot water supply load, hot water supply load to a bathtub), and heating load. The home appliance has the same configuration as the home cogeneration system, and various home appliances and home devices used at home are connected to the home cogeneration system. In addition, since the heating load consumes heat of hot water, it is considered as a part of the hot water supply load and can be included in the hot water supply load in a broad concept. However, in order to make the following explanation easy to understand, It will be described as a heating load.

  In this home cogeneration system evaluation system, the generator 4 is driven by the gas engine 2, and the electric power generated by the generator 4 is sent to the residential distribution board 8 via the inverter 6. When the power is sent from the power board 8 to the power load 10 (AC load device) and consumed by the AC load device 10 and the power is insufficient, external power (commercial power) is supplied to the power load 10 through the residential distribution board 8. Be sent.

  The evaluation system for the cogeneration system includes a hot water supply device 11 for supplying hot water. The hot water supply device 11 has a hot water storage tank 12 for storing hot water, and the hot water storage tank 12 has exhaust heat from the gas engine 2. Is configured to be stored as hot water. Cooling water from the gas engine 2 is circulated through the cooling water passage 14 and the heat exchanger 16, and hot water in the hot water storage tank 12 is circulated through the circulation passage 18 and the heat exchanger 16. The cooling water and the water in the circulation flow path 18 are subjected to heat exchange, and hot water heated by this heat exchange is stored in the hot water storage tank 12. A surplus power heater 17 is disposed in the circulation flow path 18, and surplus power generated by the generator 4 is supplied to the surplus power heater 17 to heat the hot water flowing through the circulation flow path 18. It is configured to be consumed. Further, the boiler means 20 is provided in the circulation flow path 18, and the boiler means 20 is operated when the heat load (hot water supply load, heating load) cannot be covered by the amount of heat by heat exchange.

  A water supply passage 22 is connected to the hot water storage tank 12, one side of the water supply passage 22 is connected to a water pipe 24, and the other side is connected to a cold water supply pipe 26. The cold water flowing from the cold water supply source 28 through the cold water supply pipe 26 is mixed by the mixing valve 30 to adjust the temperature, and the temperature-adjusted water is supplied to the hot water storage tank 12 through the water supply passage 22.

  The hot water supply load that consumes hot water in this home cogeneration system evaluation system includes a normal hot water supply load for hot water supply and a hot water supply load for a bathtub, and the first hot water supply passage 32 is provided in the hot water storage tank 12 as a hot water supply load. The hot water supply / drain valve 34 is connected to the first hot water supply channel 32, and hot water in the hot water storage tank 12 is drained to the outside through the first hot water supply channel 32 and the hot water supply / drain valve 34. Moreover, the 2nd hot water supply flow path 36 is connected to the hot water storage tank 12 as a hot water supply load to a bathtub, and hot water from the hot water storage tank 12 is supplied to the bathtub 38 through the 2nd hot water supply flow path 36, and bathing is performed. In addition, the second hot water supply flow path 36 is used as a hot water supply load to the bathtub, and the return flow path 40 is connected, and the water (or hot water) in the bathtub 38 flows through the return flow path 40, whereby the hot water storage tank 12. The hot water is heated using the hot water, and the heated hot water is supplied to the bathtub 38 through the second hot water supply flow path 36, and thus chasing is performed. A drain pipe 42 is connected to the bathtub 38, and a drain valve 44 is disposed in the drain pipe 42, and water (hot water) in the bathtub 38 is drained to the outside through the drain pipe 42 and the drain valve 44.

  In addition, two types of heating loads, that is, first and second heating loads 46 and 48 are used as the heating load that consumes hot water, and the first heating load 46 (heat exchanger) passes through the first circulation channel 50. Connected to the hot water storage tank 12, a first on-off valve 52 is disposed in the first circulation passage 50, and hot water in the hot water storage tank 12 is circulated through the first circulation passage 50 and the first on-off valve 52. The first heating load 46 consumes heat by exchanging heat with cold water flowing through the first cold water flow path 54. This 1st heating load 46 is comprised so that the heat | fever equivalent to the floor heating apparatus which performs floor heating using 60 degreeC warm water, for example may be consumed. A second heating load 48 (heat exchanger) is connected to the hot water storage tank 12 via the second circulation flow path 56, and a second on-off valve 58 is disposed in the second circulation flow path 56, so Is circulated through the second circulation channel 56 and the second on-off valve 58. The second heating load 48 consumes heat by exchanging heat with cold water flowing through the second cold water flow path 60. This 2nd heating load 48 is comprised so that the heat | fever equivalent to the floor heating apparatus which performs floor heating, for example using 80 degreeC warm water may be consumed. In addition, on-off valves 62 and 64 are disposed in the first and second cold water flow paths 54 and 60.

  In the evaluation system described above, an AC load device is used as a power load and a heat exchanger using cold water is used as a heating load in order to facilitate the reproduction of past loads. May be used. Moreover, you may make it add and equip with a bathroom heater, a bathroom drying heater, etc. as a heating load.

  This cogeneration system evaluation system reproduces the operation status of a cogeneration system operated at home and evaluates improvements in energy savings and hot water supply efficiency. In order to reproduce, various monitor data as shown in FIG. 2 is acquired when the cogeneration is operated. And in order to reproduce this various monitor data acquired, this evaluation system is provided with the following measuring devices, measuring sensors, and the like. A first gas flow meter 68 for measuring the flow rate (GE gas amount) of the fuel gas supplied to the gas engine 2 is provided in the first gas flow path 66 connected to the gas engine 2, and is connected to the boiler means 20. A second gas flow meter 72 for measuring the flow rate (BU gas amount) of the fuel gas supplied to the boiler means 20 is provided in the second gas flow path 70. Further, in connection with the cogeneration system, the circulation channel 14 is provided with a first water flow meter 74 for measuring the flow rate of the warm water flowing through the circulation channel 14 (cooling water flow rate). A first temperature sensor 76 that detects the temperature of the hot water flowing from the gas engine 2 to the heat exchanger 16 (cooling water Hi temperature) is disposed in the forward flow path portion of the path 14, and the return flow path portion of the circulation flow path 14. In addition, a second temperature sensor 78 that detects the temperature of the warm water returning from the heat exchanger 16 to the engine 2 (cooling water low temperature) is provided. Moreover, although not shown in figure, the 1st wattmeter which measures the electric power (GE electric power generation amount) of the generator 4 and the electric power (GE electric power generation) sent from the generator 4 to the residential distribution board 8 via the inverter 6 And a third wattmeter that measures the power (heater power) supplied to the surplus power heater 17.

  A fourth wattmeter 80 is provided on the commercial power source side, the fourth wattmeter 80 measures purchased power (amount of power purchased), and a fifth wattmeter 82 is provided on the power load 10 side. The 5-watt meter 82 measures the power supplied to the power load 10 (in other words, the power load consumed by the power load 10).

  Further, in the hot water supply tank 12, the temperature of 20%, 40%, 60%, 80% and 100% of hot water (or water) of the tank capacity (tank 20% temperature, tank 40% temperature, tank 60% temperature, Third to eighth temperature sensors 84, 86, 88, 90, and 92 for detecting a tank 80% temperature and a tank 100% temperature) are provided. Further, a ninth temperature sensor (not shown) for detecting the outside air temperature is provided.

  In relation to the bathtub 38, a second water flow meter 94 and a tenth temperature sensor 96 are provided in the second hot water supply flow path 36, and an eleventh temperature sensor 98 is provided in the return flow path 40. The second water flow meter 94 measures the flow rate of hot water flowing through the second hot water supply passage 36 (bath flow rate), and the tenth temperature sensor 96 detects the temperature of hot water flowing through the second hot water supply passage 36 (bath flow temperature). The eleventh temperature sensor 98 detects the temperature of the water (hot water) flowing through the return flow path 40 (bath return temperature).

  In relation to the first heating load 46 (heat exchanger), the twelfth temperature sensor 100 is provided in the forward flow path portion of the first circulation flow path 50, and the thirteenth temperature sensor 102 and the third temperature sensor are provided in the return flow path portion. A water flow meter 104 is provided. The twelfth temperature sensor 100 detects the temperature of warm water supplied to the first heating load 46 (heating temperature), and the thirteenth temperature sensor 102 detects the temperature of warm water returning to the hot water storage tank 12 (heating return temperature). In addition, the third water flow meter 104 measures the flow rate (heating flow rate) of the hot water flowing through the first circulation channel 50.

  In relation to the first heating load 48 (heat exchanger), the fourteenth temperature sensor 106 is provided in the forward flow path portion of the second circulation flow path 56, and the fifteenth temperature sensor 108 and the fourth temperature sensor are provided in the return flow path portion. A water flow meter 110 is provided. The fourteenth temperature sensor 106 detects the temperature of warm water supplied to the second heating load 48 (heating temperature), and the fifteenth temperature sensor 108 detects the temperature of warm water returning to the hot water storage tank 12 (heating return temperature). The fourth water flow meter 110 measures the flow rate (heating flow rate) of hot water flowing through the second circulation channel 56.

  The hot water supply channel 32 is provided with a sixteenth temperature sensor 112 and a fifth water flow meter 114. The sixteenth temperature sensor 112 detects the temperature of hot water flowing through the hot water supply channel 32 (hot water supply temperature), and the fifth water flow meter 114 measures the flow rate of hot water flowing through the hot water supply channel 32 (hot water supply flow rate).

  The 17th temperature sensor 116 and the 6th water flow meter 118 are provided in water supply channel 22. The seventeenth temperature sensor 116 detects the temperature of the water flowing through the water supply channel 22 (water supply temperature), and the sixth water flow meter 118 measures the flow rate of the water flowing through the water supply channel 22 (water supply flow rate).

  In the evaluation system of this cogeneration system, the various data described above are acquired every unit time, for example, every second, and when performing a reproduction operation based on the data acquired every unit time, a unit longer in time than the unit time The reproduction operation is performed after being converted into reproduction data in a time zone, for example, every minute. In this reproduction operation, the acquired data for each unit time in the unit time zone is converted into the averaged data of the unit time zone in this range, and the reproduction operation is performed. And the measurement values and detection values of various measuring instruments (first to sixth water flowmeters, first to fifth wattmeters, etc.) and various measurement sensors (first to seventeenth temperature sensors, etc.) are reproduced. By examining the flow rates of the first and second gas flow meters 68 and 72 when the evaluation system is operated, that is, the amount of fuel gas used in the gas engine 2 and the boiler means 20, energy saving of various devices in the past load state is achieved. This is to evaluate the improvement of hot water supply and the efficiency of hot water supply. Of the acquired data, the amount of heat of cooling water, the amount of heat of the hot water storage tank, the hot water supply load, the amount of heat for bathing, the amount of heat for reheating, etc. can be calculated and calculated using the various types of acquired data.

  When performing a reproduction operation using this evaluation system, the acquired data for each unit time (for example, 1 second) is converted into reproduction data for a longer unit time zone (for example, 1 minute), and the evaluation system described above is used. Since it is reproduced, the following improvements have been made.

  Generally, in a hot water supply system including a hot water supply tank 12, a minimum operating flow rate (for example, 2 L / min as a minimum operating flow rate) is set so that a hot water supply operation is performed reliably, and it does not operate at a flow rate less than this minimum operating flow rate. It is configured as follows. For this reason, in the reproduction operation, a hot water supply threshold value for supplying hot water at a value equal to or higher than the minimum operating flow rate is set, and hot water is supplied at this hot water supply threshold value.

3 to 5, this evaluation system includes a controller 122 for controlling the entire system, and this hot water supply control is performed by the configuration shown in FIG. 3 which is a part of the function of the controller 122. More specifically, the controller 122 includes an operation control means 124 for controlling the operation of the hot water drain valve 34 and the like, an average hot water flow rate calculating means 126, a partial hot water supply determining means 128, a changed hot water supply time calculating means 130, and a post-hot water feeding means 140. And memory means 142, and in this memory means 142, operation environment data (in other words, operation data for reproducible operation) which are various operation data acquired in the past operation, and minimum operating flow rate at the time of reproducible operation A hot water supply threshold value is registered. The average hot water flow rate calculating means 126 calculates the average hot water flow rate in the unit time zone and calculates the average hot water flow rate in the unit time zone, and when hot water is supplied at a rate of 6 L / min for 45 seconds, for example, as shown on the left of FIG. ,
Average hot water flow rate = 6X (3/4) = 4.5 (L / min)
Thus, the hot water supply flow rate in this unit time zone is calculated as 4.5 L / min. For example, as shown in the center of FIG. 4, when hot water is supplied at a rate of 2 L / min for 30 seconds, for example, the average hot water flow rate calculating means 126 calculates as described above, and average hot water flow rate = 1 L / min. And calculate.

  The partial hot water determination means 128 compares the average hot water flow rate calculated by the average hot water calculation means 126 with a hot water supply threshold value. When the average hot water flow rate is smaller than the hot water supply threshold value, the partial hot water supply is determined. For example, when the average hot water supply flow rate is 4.5 L / min, the hot water supply threshold is 3 L / min or more, so that it is determined that the hot water supply is normal hot water. For example, when the average hot water supply flow rate is 1 L / min, the evaluation system is operated and controlled to supply partial hot water at a rate of 1 minute. The hot water flow rate is set to a hot water supply threshold value.

When this partial hot water supply determination is made, the changed hot water supply time calculation means 130 calculates the hot water supply time as follows. The changed hot water supply time calculation means 130
Changed hot water supply time = 1/3 = 0.33 minutes (20 seconds)
In the reproducible operation, the evaluation system is operated and controlled so as to supply hot water over a period of 1/3 minutes (20 seconds) at the rate of hot water supply threshold (3 L / min). By changing the hot water supply time to the threshold value and the hot water supply time when hot water is supplied at the hot water supply threshold value, it is possible to control the operation of the evaluation system while reproducing the past operating conditions as faithfully as possible.

  In the case of such partial hot water supply, the post-hot water supply means 140, as shown by a broken line in FIG. 7, shows the partial hot water supply, that is, the partial hot water supply load behind the unit time zone, that is, the subsequent unit. Postpone to follow the time zone. For example, in FIG. 4, in the case of a central hot water supply load (a hot water supply load between 3:28 and 3:29), the changed hot water supply time is 20 seconds, so the post-hot water supply means 140 supplies hot water in the reproduction operation. The hot water supply load according to the threshold is postponed, and hot water is supplied at a hot water supply threshold (rate of 3 L / min) for 20 seconds from 3:28:40 to 3:29. As shown on the right side of FIG. 4, when the changed hot water supply time is postponed to continue to the next unit time zone, when there is a hot water supply load later, the unit time zone (3:30 to 3:31) Hot water supply load and the subsequent hot water supply load in the unit time zone (3:31 to 3:32) will be continuously supplied, so that the hot water supply system can be operated and stopped in a short time. Repeated operation can be avoided, and reproducible operation can be performed in accordance with past driving conditions.

  As shown on the right side of FIG. 4, when there is a hot water supply load in the unit time zone and the next unit time zone following the unit time zone, the changed hot water supply time of the unit time zone is continued to the next time zone as described above. However, if there is no hot water supply load in the next unit time zone, this changed hot water supply time may be postponed, but it should be postponed to the front side of this unit time zone. Also good.

  When the evaluation system is reproduced, the hot water supply in the hot water supply control is started along the flow of the flowchart shown in FIG. Referring mainly to FIG. 3 and FIG. 5, in order to perform the reproduction operation by the above-described evaluation system, various past operation data of the home cogeneration system, that is, operation environment data is registered in the memory means 142 of the controller 122. In order to perform the hot water supply control for the reproduction operation based on the operation environment data, first, the operation environment data registered in the memory means 142 is read (step S1), and the read operation environment data is read out. In some cases, hot water supply control is performed as follows using data on the hot water supply flow rate.

  In the hot water supply control, for example, in order to change the acquired operation data for each unit time (for example, 1 second) to the reproduction operation data for each unit time (for example, 1 minute), the calculation of the hot water flow rate for each unit time is performed. Performed (step S2). The average hot water flow rate calculation means 126 calculates and averages the hot water flow rate for each unit time zone, and changes the operation data to supply hot water at the average hot water flow rate over the unit time zone.

  Then, a comparison is made between this average hot water flow rate and a hot water supply threshold value (registered in the memory means 142) (step S3), and when the average hot water flow rate is equal to or higher than the hot water supply threshold value, the process proceeds to step S5. The partial hot water determination means 128 compares the average hot water flow rate with the hot water supply threshold value, and determines that the hot water supply system can be stably operated when the average hot water flow rate is equal to or higher than the hot water supply threshold value. This average hot water supply flow rate is set as the hot water supply flow rate over the unit time zone in the reproduction operation, and in the reproduction operation, hot water is supplied over the unit time zone with this average hot water supply flow rate.

  On the other hand, when the average hot water flow rate is smaller than the hot water supply threshold value, the process proceeds to step S6, and the partial hot water determination means 128 determines that the hot water supply system cannot be operated stably during the reproduction operation and determines that the hot water supply is partial hot water. Based on this partial determination, the hot water supply threshold value is set as the hot water supply flow rate in the reproduction operation, and the changed hot water supply time calculation means 130 calculates the hot water supply time when the hot water supply threshold value is set as the hot water supply flow rate as described above. (Step S7), the hot water supply time calculated in this way is set as the changed hot water supply time, and the hot water supply post-feeding means 140 transfers the changed hot water supply time to the rear side so as to continue to the next unit time zone. To do. For example, in the case of the central hot water supply load in FIG. 4 (the hot water supply load in the time zone between 3:28 and 3:29), the changed hot water supply time of 20 seconds calculated as described above is sent backward. Therefore, the hot water supply in the reproduction operation starts at 3:28:40 for 20 seconds.

  Moreover, in general hot water supply operation, when hot water supply is performed for, for example, 5 minutes, the reproduction operation as a continuous water supply operation for 5 minutes is in line with the actual operation operation. By doing so, it is avoided that the hot water supply system is operated and stopped many times, and further, it is avoided to shift to the next heat amount consumption without consuming the predetermined heat amount. For this reason, for the end of the hot water supply load, the concept of a heat amount buffer for storing the amount of hot water supply is used, and the hot water supply in the reproduction operation is ended when the heat amount buffer becomes zero. .

  Referring again to FIG. 3, this controller 122 includes buffer heat amount calculation means 152, reproduced hot water supply heat amount calculation means 154, and remaining buffer heat amount calculation means 156 in order to reproduce the hot water supply load using the concept of the heat amount buffer. In addition, the memory means 142 includes a heat quantity buffer 158. The buffer heat amount calculation means 152 calculates the buffer hot water supply heat amount stored in the heat amount buffer 158 of the memory means 142, and adds the hot water supply load (hot water supply heat amount) in the unit time zone to the heat amount buffer 158 at the start of hot water supply control during the reproduction operation. In addition, at the beginning of the unit time zone, the hot water supply load of the unit time zone is added to the heat quantity buffer 158, and when the buffer hot water supply heat amount of the heat quantity buffer 158 becomes zero, the hot water supply load is added in the next unit time period. At some time, the hot water supply load of the next unit time zone is added to the heat quantity buffer 158.

The reproduced hot water supply calorie calculating means 154 calculates the reproduced hot water supply heat amount during the reproduction operation. This reproducible hot water calorific value is
Reproduced hot water quantity = [(hot water temperature)-(water temperature)] x (hot water flow rate)
Is calculated. Further, the remaining buffer heat amount calculation means 156 calculates the remaining buffer hot water supply heat amount remaining in the heat amount buffer 158. This remaining buffer hot water calorific value is
Remaining buffer hot water heat amount = (buffer hot water amount of heat buffer)-(reproduced hot water amount)
And the remaining buffer hot water supply heat amount becomes the remaining hot water supply load during the reproduction operation.

  When the evaluation system is reproduced, the hot water supply end in the hot water supply control is performed along the flow of the flowchart shown in FIG. With reference to FIGS. 6 to 8 together with FIG. 3, in order to perform the reproduction operation by the above-described evaluation system, the operation environment data is registered in the memory means 142 of the controller 122, and a part of the operation environment data is 6 includes reproduction operation data such as a hot water supply flow rate, a hot water supply load (amount of hot water supply), a supply water temperature, and a hot water supply temperature in each unit time zone.

  When the hot water supply operation is started in the hot water supply control of the reproduction operation, the process proceeds from step S11 to step S12, and the hot water supply heat amount is added to the heat amount buffer 158 of the memory means 142. That is, at 7:34:32 in FIG. 7, the hot water supply is started in the reproduction operation, and the buffer calorific value calculation means 152 uses this unit time zone (time zone from 7:34 to 7:35 in the operating environment data). ) And the hot water supply heat amount is registered in the heat amount buffer 158.

  Then, when the reproduction operation of this evaluation system is started, the hot water supply heat amount calculation means 154 calculates the hot water supply heat amount by the hot water supply operation of the reproduction operation as described above (step S13), and the remaining buffer heat amount calculation means 156 The amount of hot water supplied during the reproduction operation is subtracted from the amount of buffer hot water supplied from the heat amount buffer 158 (step S14), and the remaining amount of hot water supplied during the reproduction operation in this way, that is, the remaining amount of buffer hot water supplied is calculated.

  When the remaining amount of buffer hot water supply is calculated in this way, it is determined whether or not the buffer hot water supply heat amount of the heat amount buffer 158 is zero (step S15), and it is determined whether or not a predetermined unit time period has passed ( In step S16, it is further determined whether or not hot water supply is continued (step S17).

  The unit time zone (7:34 to 7:35 unit time zone) of the start of hot water supply operation in the reproduction operation ends and the next unit time zone (7:35 to 7:36 unit time zone) Then, as shown in FIG. 7, at this time, when the next unit time zone is started, since the buffer hot water supply amount remains in the heat amount buffer 158, the process returns from step S15 to step S16 to step S12 to calculate the buffer heat amount. The means 152 adds the hot water supply load (hot water supply heat amount) of the next unit time zone to the buffer hot water supply heat amount of the heat amount buffer 158, and step S13 to step S17 are repeatedly performed. As described above, the flow from step S16 to step S12 further includes the next unit time zone (7:36 to 7:37 unit time zone) and the next unit time zone (7:37 to 7:38). At the beginning of the minute unit time zone, the process is performed as shown in FIG.

  In the unit time zone of the hot water supply operation in the reproduction operation (unit time zone of 7:37 to 7:38), the buffer hot water supply amount of the heat amount buffer 158 becomes zero (zero) during the hot water supply operation of the reproduction operation. However, in the next unit time zone (7:38 to 7:39 unit time zone) following this unit time zone, hot water is supplied and hot water is supplied. In this case, step S15 and After returning to step S12 through step S17, this unit time zone (7:37 to 7:38 unit time zone) has not elapsed, but the next time when the buffer hot water supply amount of the heat amount buffer 158 becomes zero. Is added to the unit time zone (unit time zone from 7:38 to 7:39), and the process proceeds to step S13.

  In the unit time zone of the hot water supply operation in the reproduction operation (unit time zone of 7:38 to 7:39), the amount of buffer hot water supply in the heat amount buffer 158 becomes zero (zero) during the hot water supply operation of the reproduction operation. Since there is no hot water supply heat amount in the next unit time zone (7:39 to 7:40 unit time zone) following this unit time zone, in this case, after step S15 and step S17, step S18 is performed. The hot water supply for the reproduction operation is finished when the buffer hot water supply amount of the heat amount buffer 158 becomes zero.

  Thus, since the concept of the heat quantity buffer is used in the hot water supply control of the reproduction operation and the hot water supply is terminated based on the buffer hot water supply heat quantity, for example, as shown in FIG. (34 to 7:38), when the hot water supply operation is performed, the reproduction operation is reproduced as a series of continuous hot water supply operations for 5 minutes (7:34 to 7:38) as described above. By reproducing in this way, it is possible to perform the reproduction operation more faithfully in accordance with the actual hot water supply operation, and it is possible to avoid repeated operation and stoppage of the hot water supply system in the reproduction operation.

  In addition, this evaluation system is provided with a bathtub 38 and is configured to be operated while reproducing the bathing and retouching of the bathtub 38. In this connection, the following improvements are further provided. ing.

  In addition to the operation control means 124 (also shown in FIG. 9), the memory means 142 (also shown in FIG. 9), the average hot water supply flow rate calculating means 126, the partial hot water supply determining means 128 and the like (see FIG. 3), Furthermore, the data reading means 162, the reheating data extraction means 164, the bathing data extraction means 166, the bathing continuation determination means 168, and the bathing / bathing determination means 170 are included. In addition to various data, a predetermined set time is registered. The data reading unit 162 reads the data shown in FIG. 10 which is a part of the driving environment data registered in the memory unit 142, and the additional data extracting unit 164 extracts the additional data from the read data. The tension data extraction unit 166 extracts bath tension data from the read data. Further, the bath continuation determination unit 168 determines whether or not the bathing has been performed continuously for a predetermined set time (for example, set to about 5 minutes), and the chasing / bathing determination unit 170 will be described later. In such a manner, the bathing is determined and the bathing is determined.

  Further, the bath 38 is provided with a level meter 174 for detecting the liquid level, and this level meter 174 is an upper liquid level of the bath 38 (the liquid when hot water is appropriately entered into the bath 38). And a lower level sensor 178 for detecting the lower liquid level of the bathtub 38 (the surface from which the water (warm water) in the bathtub 38 has been discharged). Detection signals from the level and lower level sensors 176 and 178 are sent to the controller 122. In addition, a bath hot water on / off valve 180 is provided in the second hot water supply flow path 36, and a reheating return open / close valve 182 and a feed pump 184 are provided in the return flow path 40. When the bath hot water on / off valve 180 is maintained in the open state and the reheating operation is performed, the reheating / returning valve 182 is maintained in the open state and the feed pump 184 is operated. In addition, before the bathing operation, as will be described later, the drain valve 44 is opened, and the water (hot water) in the bathtub 38 is drained to the outside.

  When this evaluation system is reproduced, the determination of chasing and bathing is performed along the flow of the flowchart shown in FIG. With reference to FIG. 10 and FIG. 11 together with FIG. 9, in order to perform the reproduction operation by the above-described evaluation system, the operation environment data is registered in the memory means 142 of the controller 122, and a part of the operation environment data is As shown in FIG. 10, it includes reproduction operation data such as reheating heat amount and bathing heat amount in each unit time zone.

  In order to perform the bath determination of the reproducible operation, for example, the operation environment data is read up to a predetermined time (for example, set to about 60 minutes) (step S21), and the memory is read from the read operation environment data. Data and bathing data are extracted (step S22). The chasing data extracting means 164 extracts chasing data, that is, chasing heat amount data from the operating environment data, and the bathing data extracting means 166 extracts bathing data, ie, bathing heat amount data from the operating environment data.

  When the chasing data extracting unit 164 does not extract chasing data, and the bathing data extracting unit 166 does not extract bathing data (in other words, chasing and bathing are not performed until a predetermined set time), The process ends through step S23.

  On the other hand, when there is chasing data and / or bathing data, the process proceeds to step S24 through step S23, and it is determined whether or not chasing data appears first in the data up to a predetermined set time ahead. When the reheating data, that is, the reheating heat quantity first appears, the reheating / bath tension determining means 170 determines that reheating is performed (step S25), and the water (hot water) stretched in the bathtub 38 is left as it is. It is kept in the state of.

  Further, when the bathing data, that is, the amount of heat of bathing appears first in the data up to a predetermined set time, the process proceeds from step S26 to step S27, and the bathing is set to the bathing set time (for example, about 5 minutes). ) If it is determined whether or not it has been continued for a while, and the bath setting time has not been continued for a while, the reheating / bathing determining means 170 determines that the reheating is performed (step S28). Water (warm water) is kept as it is. The fact that the bathing is not performed continuously for the set time of the bathing means that even if the bathing is performed after draining the water (warm water) in the bathtub 38, a certain amount of hot water does not accumulate in the bathtub 38. If the bath is of a certain extent, there is a risk of airing. Therefore, the reheating / bathing determining means 170 determines that reheating is performed, and the water (hot water) in the bathtub 38 is kept as it is.

  Furthermore, when the bathing data first appears in the data up to a predetermined set time and the bathing is performed continuously for the bathing set time, the chasing / bathing determining means 170 determines that the bathing is performed ( In step S29), the controller 122 opens the drain valve 44 based on the determination of bathing (step S30), and the water (hot water) in the bathtub 38 is drained. This open state of the drain valve 44 is reproduced and maintained until the time of bathing, that is, until the bathing time, and when the bathing time is reached, the process proceeds from step S31 to step S32, the drain valve 44 is closed, and the bath 38 is opened. Bathing is performed (step S33). When hot water having a predetermined amount of heat (that is, the amount of heat generated by the bath) is supplied to the bathtub 38 by the bath, the process proceeds from step S34 to step S35, and the bath is completed in the reproduction operation. By thus draining the water (warm water) of the bathtub 38, bathing can be performed in the reproduction operation of the evaluation system.

The drain valve 44 may be switched from the open state to the closed state when the lower level sensor 178 of the level meter 174 detects the water surface.
As mentioned above, although one Embodiment of the hot water supply evaluation system according to this invention was described, this invention is not limited to this embodiment, A various deformation | transformation thru | or correction | amendment are possible without deviating from the scope of the present invention.

  For example, in the above-described embodiment, description has been made by applying to an evaluation system for a home cogeneration system incorporating a hot water supply evaluation system according to the present invention. However, the present invention is not limited to such an evaluation system, and a hot water supply device and a hot water storage are provided. The present invention can also be applied as an evaluation system for a hot water supply system including a hot water supply device.

The system diagram which shows simply one Embodiment of the hot water supply evaluation system. The figure which shows the data etc. which are needed when carrying out reproduction operation of the hot-water supply evaluation system of FIG. The block diagram which shows a part of control system of the hot-water supply evaluation system of FIG. The figure for demonstrating the partial hot water supply by the control system of FIG. The flowchart explaining the flow of the partial hot water supply by the control system of FIG. The figure which shows a part of data of the hot water supply load reproduced by the control system of FIG. The figure which shows the change of the hot water supply calorie | heat amount in the reproduction hot water supply driving | operation by the control system of FIG. The flowchart which shows the flow of the reproduction hot water supply operation by the control system of FIG. The block diagram which shows the other part of the control system of the hot-water supply evaluation system of FIG. The figure which shows a part of hot water supply load data reproduced by the control system of FIG. The flowchart which shows the flow of bathing determination by the control system of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Gas engine 4 Electric generator 10 Electric power load 11 Hot water supply apparatus 12 Hot water storage tank 20 Boiler means 38 Bathtub 46,48 Heating load 122 Controller 126 Average hot water supply flow rate calculation means 128 Partial hot water supply determination means 130 Change hot water supply time calculation means 152 Buffer heat amount calculation means 154 Reproduced hot water calorie calculating means 156 Remaining buffer calorie calculating means 170

Claims (6)

A hot water supply evaluation system for reproducing a past hot water supply load and evaluating a hot water supply system including a hot water supply device,
A controller for reproducing the hot water supply system based on a past hot water supply load, and the controller calculates an average hot water flow rate for calculating an average hot water flow rate in the set unit time zone based on a hot water flow rate in the set unit time zone. And the average hot-water supply flow calculated by the average hot-water supply calculating means and a hot-water supply threshold value, and when the average hot-water supply flow rate is smaller than the hot-water supply threshold value, determine partial hot water supply And a changed hot water supply time calculation means for changing the hot water supply threshold to an average hot water supply flow rate based on the determination of the partial hot water supply of the partial hot water supply determination means,
When reproducing the hot water supply load determined to be the partial hot water supply, the controller reproduces the hot water supply system over the changed hot water supply time with the average hot water flow rate of the hot water supply threshold value. . The controller further includes a hot-water supply / post-feed means for post-feeding the hot-water supply load, and when reproducing the hot-water supply load determined to be partial hot-water supply, the hot-water supply load in a unit time zone following the reproduced unit time zone The hot-water supply post-feed means feeds back the changed hot-water supply time for hot-water supply with the average flow rate of the hot-water supply threshold so as to continue in the subsequent unit time zone. The hot water supply evaluation system described in 1. The controller further includes a heat amount buffer for buffering the hot water supply heat amount, a buffer heat amount calculation means for adding the hot water supply heat amount per unit time, a reproduced hot water supply heat amount calculation means for calculating the hot water supply heat amount when reproducing the hot water supply load, A remaining buffer heat amount calculating means for calculating a remaining buffer hot water heat amount of the heat amount buffer, and the buffer heat amount calculating means calculates the hot water supply heat amount of the unit time zone at the start of the reproduction hot water supply and the unit time zone. 3. The hot water supply evaluation system according to claim 2, wherein the reproduction hot water supply operation is terminated when the remaining buffer hot water supply amount by the remaining buffer heat amount calculation means becomes zero after being added to the heat amount buffer. When the remaining buffer hot water heat quantity by the remaining buffer calorie calculating means becomes zero in a specific unit time zone, and there is a hot water supply load in the next unit time zone following the specific unit time, the buffer heat quantity calculating means 4. The hot water supply evaluation according to claim 3, wherein when the remaining buffer hot water supply heat amount becomes zero, the hot water supply operation of the next unit time zone is added to the heat amount buffer and the reproduced hot water supply operation is continued. system. A hot water supply evaluation system for reproducing a past hot water supply load and evaluating a hot water supply system including a hot water supply device,
A controller for reproducing the hot water supply system based on a past hot water supply load, the controller includes additional data extraction means for extracting additional hot water supply load data up to a predetermined time ahead, and up to the predetermined time ahead Bathing data extraction means for extracting bathing hot water supply load data, and bathing / bathing determination means for determining whether the hot water supply load related to the bathtub is retreating or bathing,
The rebirth / bath tension determination means firstly displays the bath tension hot water supply load data by the bath tension data extraction means in the predetermined time range up to the predetermined time ahead, and the bath tension hot water supply load data indicates the bath tension setting time. A hot water supply evaluation system characterized in that when it appears continuously as described above, it is determined that the bath is full. 6. The controller according to claim 5, wherein the controller opens the drain valve of the bathtub and drains the water in the bathtub based on the bath tension determination result when the chasing / bath tension determining means determines that the bath is full. The hot water supply evaluation system described in 1.

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