JP2018009720A - Heat source device and control method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat source device capable of appropriately and efficiently combining preferential operation and following operation of a plurality of kinds of heat source machines in accordance with a requirement of a load, and a control method therefor.SOLUTION: A heat source device comprises first and second heat source machines 1 and 2. When its capacity is short by operation of the first heat source machine only, the heat source device sets a second preset temperature T2s with respect to heat source water flowing out from the second heat source machine based on a preset temperature T3s, flow rates R1 and R2 and a temperature T2 of heat source water flowing out from the second heat source machine 2, while setting a value shifted to a load increase side from the preset temperature T3s by a predetermined value as a new first preset temperature T1s with respect to heat source water flowing out from the first heat source machine 1, controls operation of the first heat source machine such that a temperature T1 of the heat source water flowing out from the first heat source machine becomes the new first preset temperature T1s, and controls operation of the second heat source machine such that the temperature T2 of the heat source water flowing out from the second heat source machine 2 becomes the second preset temperature T2s.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat source device including a plurality of types of heat source devices and a control method thereof.

  There is known a heat source device that includes a plurality of types of heat source units that use different types of energy and supplies heat source water flowing out from these heat source units to a load. As a plurality of types of heat source machines, there are a heat pump type heat source machine that operates with electric energy, and an absorption type heat source machine that operates with heat energy different from electricity, for example, steam.

  In this heat source device, a heat pump type heat source machine with excellent energy consumption efficiency (COP) is normally operated with priority, and an absorption type heat source machine is followed as needed (also called follow-up operation), and power shortage is expected. In such a situation, it is conceivable to operate the heat pump type heat source device as needed while performing the priority operation of the absorption type heat source device.

JP 2008-45800 A JP 2004-27884A

  When any one of a plurality of types of heat source devices is preferentially operated, it is very difficult to control how to combine the preferential operation and the follow-up operation of another heat source device according to the load demand.

  An object of the present embodiment is to provide a heat source device and a control method thereof that can appropriately and efficiently combine priority operation and follow-up operation of a plurality of types of heat source machines according to load requirements.

  The heat source machine according to claim 1 includes first and second heat source machines that use different types of energy, joins the heat source water flowing out from these heat source machines, and supplies them to the load. Means and second control means. The first control means determines a set temperature T3s determined for the heat source water after the merging as a first set temperature T1s for the heat source water flowing out from the first heat source unit, and the heat source water flowing out from the first heat source unit The operation of the first heat source machine is controlled so that the temperature T1 of the first temperature becomes the first set temperature T1s. When the capacity is insufficient only by the operation of the first heat source unit, the second control unit newly sets a value shifted by a predetermined value from the set temperature T3s toward the load increasing side with respect to the heat source water flowing out from the first heat source unit. And a ratio R1 of the set temperature T3s, the temperature T3 of the heat source water after joining, the flow rate of the heat source water after joining, and the flow rate of the heat source water flowing out of the first heat source machine. Based on the ratio R2 between the flow rate of the heat source water after the merging and the flow rate of the heat source water flowing out from the second heat source unit, and the temperature T2 of the heat source water flowing out from the second heat source unit, the second heat source unit A second set temperature T2s for the heat source water flowing out from the first heat source unit is determined, and the operation of the first heat source unit is controlled so that the temperature T1 of the heat source water flowing out from the first heat source unit becomes the new first set temperature T1s. And said first It controls the operation of the second heat source unit so that the temperature T2 of the heat source water flowing out from the heat source apparatus is the second set temperature T2s.

  The method for controlling a heat source apparatus according to claim 5 includes first and second heat source apparatuses that use different types of energy, and combines the heat source water flowing out from these heat source apparatuses to supply the heat source apparatus to a load. A set temperature T3s determined for the combined heat source water is defined as a first set temperature T1s for the heat source water flowing out of the first heat source unit; a temperature of the heat source water flowing out of the first heat source unit The operation of the first heat source machine is controlled so that T1 becomes the first set temperature T1s; when the capacity is insufficient only by the operation of the first heat source machine, a predetermined value is set from the set temperature T3s to the load increasing side. A value shifted by only the first heat source water flowing out from the first heat source machine is determined as a new first set temperature T1s, the set temperature T3s, the temperature T3 of the heat source water after the merge, and the heat source after the merge R1 between the flow rate of the heat source water flowing out from the first heat source unit, the ratio R2 between the flow rate of the heat source water after joining and the flow rate of the heat source water flowing out from the second heat source unit, and the second A second set temperature T2s for the heat source water flowing out from the second heat source unit is determined based on the temperature T2 of the heat source water flowing out from the heat source unit; the temperature T1 of the heat source water flowing out from the first heat source unit is the new first temperature T1. The operation of the first heat source unit is controlled so as to be 1 set temperature T1s; the operation of the second heat source unit is controlled such that the temperature T2 of the heat source water flowing out from the second heat source unit becomes the second set temperature T2s. To control.

The block diagram which shows the structure of one Embodiment. The flowchart which shows the control of one Embodiment. The time chart which shows an example of the capability P1, P2, the temperature T1, T2, T3 of heat source water, and the change of preset temperature T1s, T2s, T3s in each embodiment.

An embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a heat pump heat source machine (first heat source machine) 1 and an absorption heat source machine (second heat source machine) 2 are water in parallel with each other as a plurality of types of heat source machines that use different types of energy. Piping is connected.

  The heat pump heat source unit 1 includes a heat pump refrigeration cycle that operates using electricity as energy, takes in water by operating an attached or retrofitted pump 1p, and cools or heats the taken-in water by operating the heat pump refrigeration cycle. It is sent out as heat source water for air conditioning. Moreover, the heat pump type heat source device 1 has a controller 1a that controls the compression functional force of the heat pump type refrigeration cycle and the operation of the pump 1p.

  The absorption heat source unit 2 is composed of a well-known evaporator, absorber, regenerator, and condenser, and operates with energy different from electricity, for example, thermal energy of steam heated by a gas burner or the like. Water is taken in by operating the attached pump 2p, and the taken-in water is cooled and sent out as heat source water for air conditioning. The absorption heat source device 2 has a controller 2a that controls the operation of the evaporator, the absorber, the regenerator, and the condenser and the operation of the pump 2p.

  The heat source water flowing out from the heat pump heat source unit 1 and the heat source water flowing out from the absorption heat source unit 2 merge in one water pipe, and the merged heat source water is supplied to the load 3. The load 3 is, for example, a water heat exchanger for air conditioning, an air heat exchanger (radiator) for air conditioning, a water storage tank for water supply, a hot water storage tank for hot water supply, or the like. The water flowing out from the load 3 is divided into two water pipes and flows to the pumps 1p and 2p.

  A temperature sensor (first temperature sensor) 11 for detecting the temperature T1 of the heat source water flowing out from the heat pump heat source unit 1 is disposed on the outlet side water pipe of the heat pump type heat source unit 1. A temperature sensor (second temperature sensor) 12 for detecting the temperature T2 of the heat source water flowing out from the absorption heat source unit 2 is disposed on the outlet side water pipe of the absorption heat source unit 2. A temperature sensor (third temperature sensor) that detects the temperature T3 of the heat source water that has joined the heat source water that flows out of the heat pump heat source unit 1 and the heat source water that flows out of the absorption heat source unit 2 and flows. 13 is arranged.

  Controllers 1 a and 2 a and temperature sensors 11, 12 and 13 are connected to the system controller 10. An operation indicator 14 is also connected to the system controller 10.

  The system controller 10 controls the operation of the heat pump heat source machine 1 and the absorption heat source machine 2, and includes the following means (1) to (5) as main functions.

  (1) Selection means for selecting which one of the heat pump heat source apparatus 1 and the absorption heat source apparatus 2 is preferentially operated according to a command from an external power demand control unit, an operation of the operation display 14 or the like. For example, the priority operation of the heat pump heat source unit 1 that usually has excellent energy consumption efficiency (COP) is selected, and the priority operation of the absorption heat source unit 2 that operates with the heat energy of steam is selected in a situation where power shortage is expected. To do.

  (2) At the time of priority operation of the heat pump heat source machine 1, the set temperature T3s determined for the heat source water after joining is set as the set temperature (first set temperature) T1s for the heat source water flowing out from the heat pump heat source machine 1, First control means for controlling the operation (and capacity P1) of the heat pump heat source unit 1 so that the temperature T1 of the heat source water flowing out from the heat pump type heat source unit 1 becomes the set temperature T1s. The set temperature T3s is set by operating the operation indicator 14 or by an instruction from the load 3.

  (3) A heat source that flows out of the heat pump heat source unit 1 by a value shifted by a predetermined value ΔT1 from the set temperature T3s to the load increasing side when the capacity is insufficient only by the operation of the heat pump heat source unit 1 by the first control means. It is determined as a new set temperature T1s for water, and is absorbed by calculation based on the set temperature T3s, the temperature T3 of the heat source water after joining, the flow rate ratios R1 and R2, and the temperature T2 of the heat source water flowing out from the absorption heat source unit 2. The set temperature (second set temperature) T2s [= (T3s−T3) × (R1 / R2) + T2] for the heat source water flowing out from the heat source device 2 is determined, and the temperature T1 of the heat source water flowing out from the heat pump heat source device 1 Controls the operation (and capacity P1) of the heat pump heat source unit 1 so that the temperature becomes the new set temperature T1s, and the heat source flows out of the absorption heat source unit 2 Second control means for controlling the operation (and capacity P2) of the absorption heat source unit 2 so that the water temperature T2 becomes the set temperature T2s determined above.

  Set temperature T1s = [T3s−ΔT1] during cooling, and set temperature T1s = [T3s + ΔT1] during heating. The predetermined value ΔT1 is an arbitrary value of the heat source water temperature that can be changed within the range of the rated capacity of the heat pump heat source apparatus 1. The flow rate ratio R1 is a ratio between the flow rate of the heat source water after the merge and the flow rate of the heat source water flowing out from the heat pump heat source unit 1, and is a ratio between the detection temperature T3 of the temperature sensor 13 and the detection temperature T2 of the temperature sensor 12. The difference “T3−T2” can be detected by dividing the difference “T1−T2” between the detected temperature T1 of the temperature sensor 11 and the detected temperature T2 of the second temperature sensor 12. R1 = (T3-T2) / (T1-T2). The flow rate ratio R2 is a ratio between the flow rate of the heat source water after the merge and the flow rate of the heat source water flowing out from the absorption heat source unit 2, and is a ratio between the detection temperature T3 of the temperature sensor 13 and the detection temperature T1 of the temperature sensor 11. The difference “T3−T1” can be detected by dividing the difference “T2−T1” between the detected temperature T2 of the temperature sensor 12 and the detected temperature T1 of the temperature sensor 11. R2 = (T3-T1) / (T2-T1).

  (4) During the priority operation of the absorption heat source unit 2, the set temperature T3s is determined as the set temperature (first set temperature) T2s for the heat source water flowing out from the absorption heat source unit 2, and the heat source flowing out from the absorption heat source unit 2 Third control means for controlling the operation (and capacity P2) of the absorption heat source unit 2 so that the water temperature T2 becomes the set temperature T2s.

  (5) A heat source that flows out of the absorption heat source unit 2 by a value shifted by a predetermined value ΔT2 from the set temperature T3s to the load increasing side when the capacity is insufficient only by the operation of the absorption heat source unit 2 by the third control means. As a new set temperature T2s for water, a heat pump is calculated by calculation based on the set temperature T3s, the temperature T3 of the heat source water after joining, the flow rate ratios R2 and R1, and the temperature T1 of the heat source water flowing out of the heat pump heat source unit 1. The set temperature (second set temperature) T1s [= (T3s−T3) × (R2 / R1) + T1] for the heat source water flowing out from the heat source unit 1 is determined, and the temperature T2 of the heat source water flowing out from the absorption heat source unit 2 Is the temperature of the heat source water that controls the operation (and the capacity P2) of the absorption heat source unit 2 so that the temperature becomes the new set temperature T2s and flows out of the heat pump type heat source unit 1 Fourth control means for controlling the operation (and capacity P1) of the heat pump heat source apparatus 1 so that T1 becomes the set temperature T1s defined above.

  Set temperature T2s = [T3s−ΔT2] during cooling, and set temperature T2s = [T3s + ΔT2] during heating. The predetermined value ΔT2 is an arbitrary value of the heat source water temperature that can be changed within the range of the rated capacity of the absorption heat source unit 2.

  Since the flow rate ratios R1 and R2 are related to each other based on the flow rate of the heat source water after joining, if one of the flow rate ratios is known, the other flow rate ratio can be obtained from the flow rate ratio. Considering this point, the flow rate ratio R1 may be obtained by the above calculation “R1 = (T3−T2) / (T1−T2)”, and the flow rate ratio R2 may be calculated from the obtained flow rate ratio R1. Alternatively, the flow rate ratio R2 may be obtained by the above calculation “R2 = (T3−T1) / (T2−T1)”, and the flow rate ratio R1 may be calculated from the obtained flow rate ratio R2.

  When the predetermined flow rate ratios R1 and R2 are determined as specified values by operating the rated capacity of the pumps 1p and 2p, the data of the flow rate ratios R1 and R2 are stored in advance in the internal memory of the system controller 10, The data of the flow rate ratios R1 and R2 may be read sequentially.

  When the set temperature (second set temperature) T2s when the heat pump heat source apparatus 1 is in priority operation is defined as T2s [= (T3s−T3) × (R1 / R2) + T1], and the absorption heat source apparatus 2 is in priority operation Set temperature (second set temperature) T1s as T1s [= (T3s-T3) × (R2 / R1) + T2], but the set temperature (second set temperature when the heat pump heat source apparatus 1 is in priority operation) ) T2s is defined as T2s [= (T3s−T1) × (R1 / R2) + T3s], and the set temperature (second set temperature) T1s when the absorption heat source apparatus 2 is in the priority operation is set to T1s [= (T3s−T2 ) × (R2 / R1) + T3s].

Next, the cooling control executed by the system controller 10 will be described with reference to the flowchart of FIG. 2 and the time chart of FIG.
When the operation display 14 is operated to start the cooling operation (YES in step S1), the system controller 10 sets the follow flags f1 and f2 to initial values “0” (step S2). Subsequently, the system controller 10 determines which of the priority operation of the heat pump heat source device 1 and the absorption heat source device 2 is selected (step S3).

[Priority operation of heat pump heat source unit 1]
When the priority operation of the heat pump heat source unit 1 is selected (YES in step S3), the system controller 10 turns on the operation of the pump 1p with the rated capacity, and if the follow flag f2 is “1”, Is returned to the initial value “0” (step S4). When the pump 1p is turned on, the heat source water flows out of the heat pump heat source unit 1, and the heat source water flows through the load 3 to the heat pump type heat source unit 1. Along with the circulation of the heat source water, the temperature T1 of the heat source water flowing out from the heat pump heat source machine 1 is detected by the temperature sensor 11, and the temperature T3 (= T1) of the heat source water at the junction is detected by the temperature sensor 13. The

  Following the operation on of the pump 1p, the system controller 10 determines that the set temperature T3s determined for the heat source water after merging is the heat pump heat source when the follow-up flag f1 is the initial value “0” (YES in step S5). It is determined as a set temperature (first set temperature) T1s for the heat source water flowing out from the machine 1 (step S6). Then, the system controller 10 controls the operation and capability P1 of the heat pump heat source unit 1 so that the detected temperature T1 of the temperature sensor 11 becomes the set temperature T1s (step S7). That is, heat source water having a temperature that meets the requirements of the load 3 is obtained by the independent operation of the heat pump heat source machine 1, and the heat source water is sent to the load 3.

  At a stage where the capacity P1 of the heat pump heat source apparatus 1 does not reach the upper limit value, the system controller 10 determines that the capacity is not insufficient (NO in step S8), turns off the operation of the absorption heat source apparatus 2, and pumps 2p is turned off, the initial value “0” of the follow-up flag f1 is maintained (steps S9, S10, S11), and the operation stop operation on the operation indicator 14 is monitored (step S12). If there is no operation to stop (NO in step S12), the system controller 10 returns to the priority operation determination in step S3 and repeats the same processing. If there is a driving stop operation (YES in step S12), the system controller 10 turns off all driving (step S13) and returns to the first driving start determination in step S1.

  When the capacity P1 of the heat pump heat source machine 1 reaches the upper limit value, heat source water having a temperature that meets the requirements of the load 3 cannot be supplied to the load 3 as it is. In this case, the system controller 10 turns on the pump 2p with the rated capacity based on the determination that the capacity is insufficient (YES in Step S8) (Step S14). When the pump 2p is turned on, the heat source water flows out of the absorption heat source unit 2, and the heat source water merges with the heat source water flow from the heat pump type heat source unit 1. The temperature T2 of the heat source water flowing out from the absorption heat source unit 2 is detected by the temperature sensor 12.

  As the pump 2p is turned on, the system controller 10 sets the follow-up flag f1 to “1” (step S15), and a value “T3s” shifted by a predetermined value ΔT1 from the set temperature T3s to the load increasing side (downward direction). −ΔT1 ″ is determined as a new set temperature T1s for the heat source water flowing out of the heat pump heat source unit 1 (step S16). Subsequently, the system controller 10 detects the flow rate ratio R1 of the heat pump heat source unit 1 and the flow rate ratio R2 of the absorption heat source unit 2 (step S17), and the difference between the set temperature T3s and the detected temperature T3 of the temperature sensor 13 is “ T3s−T3 ”is multiplied by the ratio“ R1 / R2 ”of the flow rate ratios R1 and R2, and the sum of the multiplication result and the detected temperature T2 of the temperature sensor 12 is set to the set temperature for the heat source water flowing out from the absorption heat source unit 2 T2s [= (T3s−T3) × (R1 / R2) + T2] is determined (step S18). The set temperature T2s that defines the flow rate ratios R1 and R2 as parameters is for keeping the temperature T3 of the heat source water after joining constant at the set temperature T3s by the follow-up operation (also referred to as follow-up operation) of the absorption heat source unit 2. .

  After determining the set temperature T2s, the system controller 10 controls the operation and capacity P2 of the absorption heat source unit 2 so that the detected temperature T2 of the temperature sensor 12 becomes the set temperature T2s (step S19), and displays the operation. The operation stop operation in the container 14 is monitored (step S12). If there is no operation to stop (NO in step S12), the system controller 10 returns to the priority operation determination in step S3 and repeats the same processing.

  In this repetition, since the follow-up flag f1 is set to “1” (NO in step S5), the process of step S6 for determining the set temperature T3s as the set temperature T1s is not executed. The determined new set temperature T1s (= T3s−ΔT1) is used for the process of step S7. That is, the system controller 10 controls the operation (and capacity P1) of the heat pump heat source unit 1 so that the temperature T1 of the heat source water flowing out from the heat pump type heat source unit 1 becomes a new set temperature T1s (= T3s−ΔT1). To do.

  As described above, when the capacity is insufficient only by the operation of the heat pump heat source unit 1, the set temperature T1s for the heat pump type heat source unit 1 is shifted by the predetermined value ΔT1 in the load increasing direction, whereby the heat pump type heat source unit 1 While maintaining the priority operation, the absorption heat source device 2 can be chased for the shortage of capacity. Moreover, the set temperature T2s for the absorption heat source device 2 on the follow-up operation side is corrected according to the ratio “R1 / R2” of the flow rate ratios R1 and R2 at that time, and the absorption heat source is based on the corrected set temperature T2s. Since the operation and capacity P2 of the machine 2 are controlled, the temperature T3 of the heat source water after joining can be kept constant at the set temperature T3s. That is, the priority operation of the heat pump heat source device 1 and the follow-up operation of the absorption heat source device 2 can be combined appropriately and efficiently in accordance with the demand of the load 3. Since the priority operation of the heat pump heat source unit 1 can be maintained by a simple operation that only shifts the set temperature Ts1 of the heat pump type heat source unit 1 by the predetermined value ΔT1, no extra control burden is applied to the system controller 10. Since the control burden on the system controller 10 can be reduced, the costs associated with the development and adoption of the system controller 10 can be reduced.

[Priority operation of absorption heat source unit 2]
When the priority operation of the absorption heat source unit 2 is selected (NO in step S3), the system controller 10 turns on the operation of the pump 2p with the rated capacity, and if the follow flag f1 is “1”, Is returned to the initial value “0” (step S20). When the pump 2p is turned on, the heat source water flows out from the absorption heat source unit 2, and the heat source water flows to the absorption type heat source unit 2 through the load 3. As the heat source water circulates, the temperature sensor 12 detects the temperature T2 of the heat source water flowing out from the absorption heat source unit 2, and the temperature sensor 13 detects the temperature T3 (= T2) of the heat source water at the junction. The

  Following the operation of the pump 2p, when the follow-up flag f2 is the initial value “0” (YES in Step S21), the system controller 10 uses the set temperature T3s determined for the heat source water after merging as an absorption heat source. It is determined as a set temperature (first set temperature) T2s for the heat source water flowing out from the machine 2 (step S22). Then, the system controller 10 controls the operation and capacity P2 of the absorption heat source unit 2 so that the detected temperature T2 of the temperature sensor 12 becomes the set temperature T2s (step S23). That is, heat source water having a temperature that meets the demand of the load 3 is obtained by the independent operation of the absorption heat source unit 2 and the heat source water is sent to the load 3.

  At a stage where the capacity P2 of the absorption heat source unit 2 does not reach the upper limit value, the system controller 10 determines that the capacity is not insufficient (NO in step S24), and turns off the operation of the heat pump type heat source unit 1, the pump 1p is turned off, the initial value “0” of the follow-up flag f2 is maintained (steps S25, S26, S27), and the operation stop operation on the operation indicator 14 is monitored (step S12). If there is no operation to stop (NO in step S12), the system controller 10 returns to the priority operation determination in step S3 and repeats the same processing. If there is a driving stop operation (YES in step S12), the system controller 10 turns off all driving (step S13) and returns to the first driving start determination in step S1.

  When the capacity P2 of the absorption heat source device 2 reaches the upper limit value, heat source water having a temperature that meets the requirements of the load 3 cannot be supplied to the load 3 as it is. In this case, the system controller 10 turns on the pump 1p with the rated capacity based on the determination that the capacity is insufficient (YES in step S24) (step S28). When the pump 1p is turned on, the heat source water flows out of the heat pump heat source unit 1, and the heat source water merges with the heat source water flow from the absorption heat source unit 2. The temperature T1 of the heat source water flowing out of the heat pump heat source machine 1 is detected by the temperature sensor 11.

  As the pump 1p is turned on, the system controller 10 sets the follow flag f2 to “1” (step S28), and a value “T3s shifted from the set temperature T3s by a predetermined value ΔT2 toward the load increasing side (downward direction). −ΔT2 ″ is determined as a new set temperature T2s for the heat source water flowing out from the absorption heat source unit 2 (step S30). Subsequently, the system controller 10 detects the flow rate ratio R2 of the absorption heat source unit 2 and the flow rate ratio R1 of the heat pump type heat source unit 1 (step S31), and the difference between the set temperature T3s and the detected temperature T3 of the temperature sensor 13 " Multiply the ratio “R2 / R1” of the flow rate ratios R2 and R1 by “T3s−T3” and set the sum of the multiplication result and the detected temperature T1 of the temperature sensor 11 to the set temperature for the heat source water flowing out from the heat pump heat source unit 1 T1s [= (T3s−T3) × (R2 / R1) + T1] is determined (step S32). The set temperature T1s that defines the flow rate ratios R2 and R1 as parameters is for keeping the temperature T3 of the heat source water after joining constant at the set temperature T3s by the follow-up operation of the heat pump heat source unit 1.

  After determining the set temperature T1s, the system controller 10 controls the operation and capability P1 of the heat pump heat source unit 1 so that the detected temperature T1 of the temperature sensor 11 becomes the set temperature T1s (step S33), and the operation display. The operation stop operation in the container 14 is monitored (step S12). If there is no operation to stop (NO in step S12), the system controller 10 returns to the priority operation determination in step S3 and repeats the same processing.

  In this repetition, since the follow-up flag f2 is set to “1” (NO in step S21), the process in step S22 for setting the set temperature T3s as the set temperature T2s is not executed, and in step 30 described above. The determined new set temperature T2s (= T3s−ΔT2) is used for the process of step S23. That is, the system controller 10 controls the operation (and capacity P2) of the absorption heat source device 2 so that the temperature T2 of the heat source water flowing out from the absorption heat source device 2 becomes a new set temperature T2s (= T3s−ΔT2). To do.

  As described above, when the capacity is insufficient only by the operation of the absorption heat source unit 2, the set temperature T2s for the absorption type heat source unit 2 is shifted by the predetermined value ΔT2 in the load increasing direction, whereby the absorption type heat source unit 2 While maintaining the priority operation, the heat pump type heat source device 1 can be chased for the shortage of capacity. Moreover, the set temperature T1s for the heat pump heat source unit 1 on the follow-up operation side is corrected according to the ratio “R2 / R1” of the flow rate ratios R2 and R1 at that time, and the heat pump type heat source is based on the corrected set temperature T1s. Since the operation and capacity P1 of the machine 1 are controlled, the temperature T3 of the heat source water after joining can be kept constant at the set temperature T3s. That is, the priority operation of the absorption heat source device 2 and the follow-up operation of the heat pump heat source device 1 can be combined appropriately and efficiently in accordance with the requirements of the load 3. Since the preferential operation of the absorption heat source unit 2 can be maintained by a simple operation that only shifts the set temperature Ts2 of the absorption heat source unit 2 by the predetermined value ΔT2, no extra control burden is imposed on the system controller 10. Since the control burden on the system controller 10 can be reduced, the costs associated with the development and adoption of the system controller 10 can be reduced.

  In the above embodiment, the absorption heat source unit 2 is used as a plurality of types of heat source units that are different from the heat pump type heat source unit 1 in the type of energy used. However, if the heat source unit does not use electric energy, the absorption type heat source unit 2 is used. Not only the heat source unit 2 but other heat source units may be used.

  In addition, the said embodiment and modification are shown as an example and are not intending limiting the range of invention. The novel embodiments and modifications can be implemented in various other forms, and various omissions, rewrites, and changes can be made without departing from the spirit of the invention. In these embodiments and modifications, the scope of the invention is included in the gist, and is included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Heat pump type heat source machine (1st heat source machine), 2 ... Absorption type heat source machine (2nd heat source machine), 3 ... Load, 10 ... System controller, 11, 12, 13 ... Temperature sensor, 14 ... Operation indicator

Claims (5)

A heat source device that includes first and second heat source units that use different types of energy, joins the heat source water flowing out from these heat source units, and supplies them to a load,
The set temperature T3s determined for the heat source water after joining is determined as a first set temperature T1s for the heat source water flowing out from the first heat source unit, and the temperature T1 of the heat source water flowing out from the first heat source unit is set to the first temperature T1s. 1st control means which controls operation of the 1st heat source machine so that it may become 1 preset temperature T1s,
When the capacity is insufficient only by the operation of the first heat source machine, a new first set temperature T1s for the heat source water flowing out from the first heat source machine is obtained by shifting a value shifted from the set temperature T3s to the load increasing side by a predetermined value. And the set temperature T3s, the temperature T3 of the heat source water after joining, the ratio R1 of the flow rate of the heat source water after joining and the flow rate of the heat source water flowing out of the first heat source machine, the heat source after joining Based on the ratio R2 of the flow rate of water and the flow rate of the heat source water flowing out from the second heat source unit, and the temperature T2 of the heat source water flowing out from the second heat source unit, the heat source water flowing out from the second heat source unit A second preset temperature T2s is determined, the operation of the first heat source machine is controlled such that the temperature T1 of the heat source water flowing out from the first heat source machine becomes the new first preset temperature T1s, and the second heat source Leaked from the machine A second control means for the temperature T2 of the heat source water to control the operation of the second heat source unit so that the second set temperature T2s that,
A heat source device comprising: The second control means includes
The difference “T3−T2” between the temperature T3 of the heat source water after the merging and the temperature T2 of the heat source water flowing out from the second heat source unit is defined as the temperature T1 of the heat source water flowing out from the first heat source unit and the second temperature T2. The ratio R1 [= (T3−T2) / (T1−T2)] is obtained by dividing by the difference “T1−T2” from the temperature T2 of the heat source water flowing out from the heat source machine, and the ratio R2 is obtained from the ratio R1. Seeking
The second set temperature T2s [= (T3s−T3) × (R1 / R2) + T2] is determined.
The heat source device according to claim 1. The second control means includes
The difference “T3−T2” between the temperature T3 of the heat source water after the merging and the temperature T2 of the heat source water flowing out from the second heat source unit is defined as the temperature T1 of the heat source water flowing out from the first heat source unit and the second temperature T2. The ratio R1 [= (T3−T2) / (T1−T2)] is obtained by dividing by the difference “T1−T2” from the temperature T2 of the heat source water flowing out from the heat source machine,
The difference “T3−T1” between the temperature T3 of the heat source water after merging and the temperature T1 of the heat source water flowing out from the first heat source unit is defined as the temperature T2 of the heat source water flowing out from the second heat source unit and the first temperature. The ratio R2 [= (T3−T1) / (T2−T1)] is obtained by dividing by the difference “T2−T1” from the temperature T1 of the heat source water flowing out from the heat source machine.
The second set temperature T2s [= (T3s−T3) × (R1 / R2) + T2] is determined.
The heat source device according to claim 1. The first heat source machine is a heat pump heat source machine that operates with electric energy,
The second heat source machine is a heat source machine that operates with energy different from electricity.
The heat source device according to claim 1, wherein the heat source device is a heat source device. A method for controlling a heat source device comprising first and second heat source units that use different types of energy, and that joins heat source water flowing out from these heat source units and supplies them to a load,
The set temperature T3s determined for the heat source water after the merge is determined as a first set temperature T1s for the heat source water flowing out of the first heat source unit,
Controlling the operation of the first heat source machine so that the temperature T1 of the heat source water flowing out of the first heat source machine becomes the first set temperature T1s,
When the capacity is insufficient only by the operation of the first heat source machine, a new first set temperature T1s for the heat source water flowing out from the first heat source machine is obtained by shifting a value shifted from the set temperature T3s to the load increasing side by a predetermined value. And the set temperature T3s, the temperature T3 of the heat source water after joining, the ratio R1 of the flow rate of the heat source water after joining and the flow rate of the heat source water flowing out of the first heat source machine, the heat source after joining Based on the ratio R2 between the flow rate of water and the flow rate of the heat source water flowing out from the second heat source unit, and the temperature T2 of the heat source water flowing out from the second heat source unit, the second heat source water flowing out from the second heat source unit 2 Set temperature T2s,
Controlling the operation of the first heat source machine so that the temperature T1 of the heat source water flowing out of the first heat source machine becomes the new first set temperature T1s,
Controlling the operation of the second heat source machine so that the temperature T2 of the heat source water flowing out of the second heat source machine becomes the second set temperature T2s,
A control method for a heat source device, comprising:

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