JP6474152B2 - Heat source system - Google Patents

Description

  The present invention relates to a heat source system that uses heat from a heat source in a plurality of heat utilization units.

  Conventionally, as a system as described above, a heat source for a facility such as a meat processing facility provided with a plurality of heat utilization units in a state where a heat utilization unit utilizing heat and a heat utilization unit utilizing cold are mixed. The one that supplies heat from is known (for example, see Patent Document 1).

  In the system described in Patent Document 1, a heat pump device is provided as a heat source, and the heat obtained from the heat pump device is supplied to a heat utilization unit that uses heat, and the heat utilization unit that uses cold is used. The cold energy obtained from the heat pump device is supplied. Thus, the heat source of the plurality of heat utilization units is also used in the heat pump device, thereby realizing simultaneous heat utilization of the heat utilization unit and the cold utilization unit while saving energy and simplifying the configuration. In addition, a hot water storage tank and an ice heat storage device are provided to store hot and cold heat obtained from the heat pump device, and the stored hot and cold heat can be supplied to the hot and cold use unit and the cold and hot use unit.

JP 2011-158237 A

  In the system described in Patent Document 1, since the heat obtained from the heat pump device is supplied to both the heat utilization unit and the cold utilization unit, the heat pump device is used in the heat utilization unit. The total amount of warm heat and the total amount of cold energy used in the cold energy utilization section must be generated. Therefore, since the heat pump device requires energy for generating the total amount of heat, energy consumption may increase and energy saving may not be achieved effectively.

  In view of this situation, a main problem of the present invention is to provide a heat source system that can use heat from a heat source at a plurality of heat utilization units while reducing energy consumption in the heat source and saving energy.

The first characteristic configuration of the present invention includes a heat source that adjusts the heat source water to a set temperature state, and a circulation path that circulates and supplies the heat source water from the heat source to a plurality of heat utilization units. A heat utilization unit that uses heat source water as a heat medium by transferring heat to and from the heat source water, and a cold heat utilization unit that uses heat source water as a cooling medium by transferring heat to and from the heat source water are provided. ,
The plurality of heat utilization units include a first heat utilization unit that intermittently utilizes heat and a second heat utilization unit that continuously utilizes heat,
When heat is used in the first heat utilization part, the heat application to the heat source water by the heat source is limited than in other cases,
The limitation of the heat application is that it is performed in accordance with the start point of heat utilization by the first heat utilization unit .

According to this feature configuration, the heat source water is cooled because the heat source water is used as a heat medium by transferring heat to and from the heat source water. On the contrary, in the cold energy utilization unit, the heat source water is used as a cold heat medium by transferring heat to and from the heat source water, so that the heat source water is heated. The circulation path circulates and supplies the heat source water from the heat source to the plurality of heat utilization units. For example, even if the heat source water is cooled in one heat utilization unit, the heat source water is heated in another heat utilization unit. Sometimes. Thus, although heat source water has a temperature fluctuation | variation, it will be suppressed that it remove | deviates from a preset temperature state greatly by heating and cooling in several heat utilization parts. Therefore, the heat source water can be used for adjusting to the set temperature state with respect to the heat obtained in the plurality of heat utilization units, so that the energy consumption in the heat source can be reduced, effectively reducing energy consumption, Can be used in multiple heat utilization units.
According to this characteristic configuration, even if heat utilization units having different heat utilization forms between the first heat utilization unit that intermittently utilizes heat and the second heat utilization unit that continuously utilizes heat are included, Energy consumption in the heat source can be reduced while appropriately using heat in the utilization section. Therefore, since the heat source system can be applied to various facilities provided with the first heat utilization unit and the second heat utilization unit in a mixed manner, the heat source system is a suitable system with a wide application range.
According to this characteristic configuration, since the first heat utilization unit intermittently utilizes heat, for example, the temperature of the heat source water greatly varies at the start of the heat utilization compared to the second heat utilization unit. Therefore, if the heat source is adjusted so that the heat source water returns to the set temperature state in accordance with the large temperature fluctuation, the energy consumption may increase by the large fluctuation. Therefore, in the case of using heat in the first heat utilization unit, the heat application to the heat source water by the heat source is limited by, for example, changing the set temperature in a direction in which the heat source is not operated, than in other cases. Thus, it is possible to effectively save energy by suppressing an increase in energy consumption in the heat source. And even if the heat application to the heat source water by the heat source is limited, the heat source water may be adjusted to return to the set temperature state by the heat utilization in other heat utilization parts, so the energy consumption in the heat source is suppressed. However, the heat source water in the set temperature state can be supplied to the plurality of heat utilization units.

  According to a second characteristic configuration of the present invention, the circulation path joins the heat source water branched from the heat source to the plurality of heat utilization units and the heat source water from the plurality of heat utilization units to the heat source. The point is that it is composed of a return path to return.

  According to this characteristic configuration, the heat source water adjusted to the set temperature state by the heat source is branched and supplied to the plurality of heat utilization units through the outward path, so that the heat source water in the set temperature state is supplied to each of the plurality of heat utilization units. Supplied and heat utilization using the heat source water can be performed appropriately. In addition, the return path joins the heat source water from a plurality of heat utilization parts and returns it to the heat source, so the cooled heat source water and the heated heat source water are joined, so that the heat source water after joining the set temperature state side It can be adjusted to the heat source and returned to the heat source, and energy consumption in the heat source can be appropriately reduced.

The third characteristic configuration of the present invention limits heat application to the heat source water by the heat source by setting the set temperature state to a limit temperature state that becomes a wider range or by limiting the output of the heat source. In the point.

Overall configuration diagram showing outline of heat source system Diagram showing the relationship between heat load and set temperature of heat source Whole block diagram which shows the outline of the heat-source system in another embodiment

An embodiment of a heat source system according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the heat source system 100 includes a heat source 1 that adjusts the heat source water N to a set temperature state, a plurality of heat utilization units 4 and 5, and a plurality of heat utilization units that use the heat source water N from the heat source 1. 4 and 5 are provided.

  As the heat source 1, a heat source 1a for heating the heat source water N and a cold source 1b for cooling the heat source water N are provided, and the heat source water N is adjusted to a set temperature state by heating by the heat source 1a and cooling by the cold source 1b. It is possible. The heat source 1a is configured by a heating device that heats the heat source water N by exchanging heat between the supplied steam and the heat source water N using a steam heat exchanger, for example. And the heat source water N are heat-exchanged to form a cooling device that cools the heat source water N.

  The heat utilization unit 2 includes a first heat utilization unit 4 that utilizes heat intermittently and a second heat utilization unit 5 that utilizes heat continuously. As the first heat utilization unit 4, a heat source is exchanged between the heat source water N and the first heat utilization unit 4 a that uses the heat source water N as a heat medium by exchanging heat with the heat source water N. And a first cold utilization unit 4b that uses water N as a cold medium. Similarly to the first heat utilization unit 4, the second heat utilization unit 5 includes a second heat utilization unit 5a and a second cold utilization unit 5b.

  The circulation path 3 includes an outward path 3a for branching and supplying the heat source water N from the heat source 1 to the plurality of heat utilization units 4 and 5, and a return path 3b for joining the heat source water N from the plurality of heat utilization units 2 and returning the heat source water N to the heat source 1. It is composed of The forward path 3a connects a plurality of heat utilization units 4 and 5 to the heat source 1 in parallel, and the return path 3b also connects the plurality of heat utilization units 4 and 5 to the heat source 1 in parallel. doing.

  In this embodiment, for example, an example in which the heat source system 100 is applied to a food production facility is shown. In the food production facility, although not shown, a production processing apparatus that performs various processes in the food production process is provided. A plurality of processing chambers are provided, and an air conditioner that performs air conditioning of the plurality of processing chambers is also provided. For example, when there is a processing request, the manufacturing processing apparatus starts operation and performs the processing. When the processing is completed, the manufacturing processing apparatus stops the operation and is operated intermittently in response to the processing request. In addition, the air conditioner is operated over the entire time period from the start of operation of the food production facility to the end of operation, for example, all day, and is continuously operated.

  Therefore, the first heat utilization unit 4 that intermittently utilizes heat is a heat utilization unit of a production processing apparatus system that performs various processes in the production process of food, and the second heat utilization unit 5 that continuously uses heat is A heat utilization unit of an air conditioner system that performs air conditioning of a plurality of processing chambers.

  The 1st heat utilization part 4a can be used as warm water generators, such as a warm water chiller and a heat pump device which receive warm heat from heat source water N by heat exchange with heat source water N, for example, this warm water generator A manufacturing processing apparatus performs various processes using the warm water produced | generated in (1). The 1st cold energy utilization part 4b can be used as cold water generating apparatuses, such as a cold water chiller and a heat pump apparatus which receive cold heat from the heat source water N by heat exchange with the heat source water N, for example, This cold water generating apparatus The manufacturing processing apparatus performs various processes using the cold water generated in step (b). The second heat utilization unit 5a can be, for example, an air conditioner that branches and supplies a heat transfer fluid that receives heat from the heat source water N by heat exchange with the heat source water N to the plurality of indoor units. Each of these can heat the interior of the processing chamber or the like. The second cold energy utilization unit 5b can be, for example, an air conditioner that branches and supplies a heat transfer fluid that has received cold from the heat source water N by heat exchange with the heat source water N to the plurality of indoor units. It is possible to cool the interior of the processing chamber or the like. In this embodiment, an air conditioner that can perform both heating and cooling is illustrated as an apparatus that serves as both the second heat utilization unit 5a and the second cold utilization unit 5b.

  The heat source system 100 includes a control unit (not shown) that controls the operation of the heat source 1 and the like, and this control unit controls the operation of the heat source 1 so as to adjust the heat source water N to a set temperature state. doing. Here, the set temperature state is, for example, a state in which the temperature of the heat source water N is within a set temperature range based on the set temperature. In this embodiment, 25 ° C. is used as a reference, and the set temperature range is 23 ° C. to 27 ° C. The set temperature state is not limited to this exemplary temperature range, and can be set to various other temperature ranges.

  For example, when the temperature of the heat source water N that returns to the heat source 1 in the return path 3b is detected and the detected temperature is equal to or lower than the set lower limit temperature (for example, 23 ° C.) of the set temperature range, the control unit operates the heat source 1a, The heat source water N is heated and adjusted to a set temperature state (for example, a set temperature range of 23 ° C. to 27 ° C.). Conversely, when the detected temperature is equal to or higher than the set upper limit temperature (for example, 27 ° C.) of the set temperature range, the control unit operates the cooling heat source 1b to cool the heat source water N and set the temperature state (for example, 23 ° C. to 27 ° C.). To the set temperature range). Here, although not shown, for example, an on-off valve that supplies and stops the supply of the heat source water N to the heat source 1 is provided, and the control unit controls the on-off valve to open and close the heat source 1 to be in an operating state. It can be switched to the operation stop state.

  The point at which the temperature of the heat source water N is detected is not limited to the flow path portion that returns to the heat source 1 in the return path 3b. For example, the first heat utilization units 4a and 4b (the heat utilization section of the manufacturing processing system) in the forward path 3a. The temperature of the heat source water N is detected at a flow path portion before supplying the heat source water N to the heat source water N, and the operation of the heat source 1 is performed so that the detected temperature becomes a set temperature state (for example, a set temperature range of 23 ° C. to 27 ° C.). Can also be controlled. Thereby, since the heat source water N in the set temperature state can be appropriately supplied to the first heat utilization units 4a and 4b, the heat utilization in the first heat utilization units 4a and 4b can be appropriately performed, and the food manufacturing process Thus, it is possible to prevent various manufacturing processes from being performed in a satisfactory manner.

  In addition, the first point is a point where the temperature of the heat source water N is detected as a flow path part for returning the heat source water N to the heat source 1 or a flow path part for supplying the heat source water N from the heat source 1; The first heat utilization units 4a and 4b (heat utilization units of the production processing system) can be switched to a second point that is a flow path portion in front of supplying the heat source water N, and the operation state of the heat source 1 and the first It can also be switched to either the first point or the second point according to the heat utilization status of the heat utilization units 4a, 4b (heat utilization unit of the manufacturing processing system).

  The heat source water N adjusted to the set temperature state by the heat source 1 is supplied to the heat utilization units 4 and 5 where heat is actually used among the plurality of heat utilization units 4 and 5 by the forward path 3a. Although not shown, each of the plurality of branch paths in the forward path 3a is provided with an intermittent valve for intermittently circulating the heat source water N. By opening and closing the intermittent valve, the plurality of heat utilization units 4, 5 Among them, the heat source water N is selectively supplied only to the heat utilization units 4 and 5 where heat is actually used.

  When heat is used in the first heat utilization unit 4a or the second heat utilization unit 5a, heat is received from the heat source water N by heat exchange with the heat source water N supplied in the forward path 3a, and the received heat is Utilizing it, it generates hot water for various treatments and heats the room. Moreover, when using heat in the 1st cold energy utilization part 4b or the 2nd cold energy utilization part 5b, it received cold from the heat source water N by heat exchange with the heat source water N supplied in the outward path 3a, and received Using cold heat, cold water or the like for various treatments is generated or the room is cooled.

  As described above, when heat is used in the plurality of heat use units 4 and 5 using the heat source water N, heat is used in the first heat use unit 4a and the second heat use unit 5a. The water N is cooled, and the heat source water N is heated by being heat-utilized in the first cold energy utilization unit 4b and the second cold energy utilization unit 5b. For example, when heat is simultaneously used by the first heat utilization unit 4a and the second cold utilization unit 5b, the heat source water N is cooled by the first heat utilization unit 4a and heated by the second cold utilization unit 5b. The The return path 3b joins the heat source water N cooled by the first heat utilization unit 4a and the heat source water N heated by the second cold utilization unit 5b to return to the heat source 1. Thereby, even if the heat source water N is cooled by the 1st heat utilization part 4a, the heat source water N heated by the 2nd heat utilization part 5b is merged, and is adjusted to the side which approaches a preset temperature state. It will be.

  As described above, when heat and cold are simultaneously used in the plurality of heat utilization units 4 and 5, the heat source water N is heated and cooled by the plurality of heat utilization units 4 and 5 although the temperature varies. Is performed, it is possible to use the heat obtained in the plurality of heat utilization units 4 and 5 on the side of adjusting the heat source water N to the set temperature state. The heat from the heat source 1 can be used simultaneously by the plurality of heat utilization units 4 and 5 while effectively reducing energy consumption in 1.

  Since the first heat utilization unit 4 intermittently utilizes heat, the temperature state of the heat source water N greatly varies at the start of the heat utilization compared to the second heat utilization unit 5. Therefore, for example, when the heat source water N is greatly deviated from the set temperature state due to heat utilization in the first heat utilization unit 4, the heat source 1 is adjusted to return the heat source water N to the set temperature state. Energy consumption may increase. Therefore, when the control unit uses heat in the first heat utilization unit 4, heat application to the heat source water N by the heat source 1 is limited as compared to other cases. Thereby, even when the heat source water N greatly deviates from the set temperature state due to the heat utilization in the first heat utilization unit 4, by restricting the heat application to the heat source water N by the heat source 1, the energy consumption in the heat source 1 is reduced. The increase can be suppressed and energy saving can be effectively achieved. And even if it restrict | limits the heat provision with respect to the heat source water N by the heat source 1, the heat source water N is adjusted to the side which returns to a preset temperature state by the heat utilization in the other heat utilization parts 4 and 5, and the consumption in the heat source 1 The heat source water N in the set temperature state can be supplied to the plurality of heat utilization units 4 and 5 while suppressing energy.

  A configuration for limiting heat application to the heat source water N by the heat source 1 will be described. As described above, when the temperature state of the heat source water N deviates from the set temperature state (for example, a set temperature range of 23 ° C. to 27 ° C.), the control unit operates the heat source 1 so that the heat source water N is set to the set temperature state. I am letting. Therefore, the control unit sets a limit temperature state (for example, a temperature range of 20 ° C. to 30 ° C.) that is wider than the set temperature state as the temperature state of the heat source water N, and the temperature state of the heat source water N is the limit temperature. If it deviates from a state (for example, within a temperature range of 20 ° C. to 30 ° C.), the heat source 1 is operated so that the heat source water N is in the limit temperature state.

  Regarding the setting method of the limit temperature state, for example, when heat is used in the first heat utilization unit 4a, the set upper limit temperature (for example, 27 ° C.) of the set temperature range is left as it is, and the set lower limit temperature of the set temperature range Only (for example, 23 ° C.) is changed to the lower limit limit temperature (for example, 20 ° C.). In addition, when heat is used in the first cold energy utilization unit 4b, the set lower limit temperature (for example, 23 ° C.) of the set temperature range is left as it is, and only the set upper limit temperature (for example, 27 ° C.) of the set temperature range is limited. Change and set the upper limit temperature (for example, 30 ° C.).

  FIG. 2 shows changes with time in the heat load and the temperature of the heat source water N in the plurality of heat utilization units 4 and 5. In FIG. 2, the thermal load is shown on the lower side and the thermal load is shown on the upper side for the thermal loads in the plurality of heat utilization units 4 and 5. As a heat load, in a situation where both the second heat utilization unit 5a and the second cold utilization unit 5b are continuously utilized, either the first heat utilization unit 4a or the first cold utilization unit 4b is used. The heat is used intermittently.

  At first, since both the second heat utilization unit 5a and the second cold utilization unit 5b are heat-utilized, the control unit sets the temperature state of the heat source water N to a set temperature state (for example, a setting of 23 ° C to 27 ° C). If it deviates from the temperature range, the heat source 1 is operated so that the heat source water N is in a set temperature state (set temperature range of 23 ° C. to 27 ° C.). When it becomes the first point (start point) P1 at which heat utilization in the first heat utilization unit 4a is started, the lower limit temperature of the set temperature range is changed from the set lower limit temperature (for example, 23 ° C) to the lower limit limit temperature (for example, 20 ° C). Change setting to). Thereby, although the temperature of heat source water N falls by the heat utilization in the 1st heat utilization part 4a, the heat source 1 is not drive | operated until it becomes below a restriction | limiting minimum temperature (for example, 20 degreeC). Then, only when the temperature of the heat source water N becomes equal to or lower than the limit lower limit temperature (for example, 20 ° C.), the heat source 1 is operated and the temperature of the heat source water N is adjusted to be equal to or higher than the limit lower limit temperature (for example, 20 ° C.). Then, when it becomes the 2nd point (stop point) P2 in which the heat utilization in the 1st heat utilization part 4a is stopped, the minimum temperature of a setting temperature range changes from a restriction minimum temperature (for example, 20 ° C) to a setting minimum temperature (for example, for example). 23 ° C).

  When it becomes the 3rd point (start point) P3 from which the heat utilization in the 1st cold-heat utilization part 4b is started, the upper limit temperature of a setting temperature range is changed from an upper limit setting temperature (for example, 27 degreeC) to a restriction upper limit temperature (for example, 30 degreeC). Change setting to). Thereby, although the temperature of the heat source water N rises by the heat utilization in the first cold energy utilization unit 4b, the heat source 1 is not operated until the temperature reaches a limit upper limit temperature (for example, 30 ° C.) or higher. Then, only when the temperature of the heat source water N becomes equal to or higher than the limit upper limit temperature (for example, 30 ° C.), the heat source 1 is operated to adjust the temperature of the heat source water N to be equal to or lower than the limit upper limit temperature (for example, 30 ° C.). Then, when it becomes the 4th point (stop point) P4 in which heat use in the 1st cold-heat utilization part 4b is stopped, the upper limit temperature of a preset temperature range is changed from a limit upper limit temperature (for example, 30 ° C) to a set upper limit temperature (for example, for example). 27 ° C).

  In this way, by changing and setting the lower limit temperature or upper limit temperature of the set temperature range to the lower limit limit temperature or the upper limit limit temperature in accordance with the heat utilization start points P1, P3 in the first heat utilization unit 4, the heat source 1 is suppressed, and heat application to the heat source water N by the heat source 1 is limited.

  Regarding the setting method of the limit temperature state, only one of the lower limit temperature and the upper limit temperature of the set temperature range is changed and set, for example, at the heat utilization start points P1 and P3 in the first heat utilization unit 4 In addition, the set temperature range (for example, 23 ° C. to 27 ° C.) can be changed to the limit temperature range (for example, 20 ° C. to 30 ° C.).

  Moreover, as shown with the dotted line of FIG. 1, the waste heat heating apparatus 6 which collect | recovers waste heats, such as food manufacturing equipment, and heats the heat source water N with the waste heat can also be provided, This waste heat heating apparatus 6 can be used as a heat source. Thereby, the heat utilization in the plurality of heat utilization units 4 and 5 can be realized while effectively utilizing the exhaust heat from the food production facility and the like, and further energy saving can be achieved.

[Another embodiment]
(1) In the above embodiment, the forward path 3a and the return path 3b are provided as the circulation path 3. For example, the heat source water N from the heat source 1 is sequentially supplied to the plurality of heat utilization units 4 and 5. It is also possible to connect a plurality of heat utilization parts 4 and 5 to 1 in series.

(2) In the said embodiment, when it becomes the stop points P2 and P4 which stop the heat utilization in the 1st heat utilization part 4, the lower limit temperature or upper limit temperature of a setting temperature range will be set from a restriction lower limit temperature or a restriction upper limit temperature to a setting lower limit. The temperature or the set upper limit temperature is restored, but such a lower limit temperature or upper limit temperature need not always be restored. For example, when managing at what timing (time period) the heat utilization in the first heat utilization unit 4 is performed, the heat source water is obtained by the subsequent heat utilization in the first heat utilization unit 4. Since the temperature state of N may be adjusted to the set temperature state side, at this time, it is possible to effectively suppress the operation of the heat source 1 by not returning the upper limit temperature or the upper limit temperature.

(3) In the above embodiment, the heat source 1 is suppressed from being operated and the heat supply to the heat source water N by the heat source 1 is limited. For example, the first heat utilization unit 4 uses heat. Furthermore, the heat supply by the heat source 1 to the heat source water N can be restricted by reducing the heating amount by the heat source 1a and the cooling amount by the cold source 1b to restrict the output of the heat source 1.

(4) In the said embodiment, although the several heat utilization part 4 and 5 is comprised from the 1st heat utilization part 4 and the 2nd heat utilization part 5, other various heat utilization parts can be applied. In addition, the number of heat utilization units can be changed as appropriate.

(5) The heat source system according to the present invention is not limited to the food production facility shown in FIG. 1 and can be applied to, for example, a large-scale food production facility having a plurality of food production facilities. In this case, by connecting the heat source of the entire facility and the heat source of each food production facility in a circulation path, and circulatingly supplying the heat source water having heat from the heat source of the entire facility to the heat source of each food production facility, The heat source in each food production facility can be used as a heat utilization unit. Thereby, the heat source water in the set temperature state can be supplied to the heat source in each food production facility, and the energy consumption in the entire facility can be reduced while appropriately using the heat in each food production facility. At this time, as in the above-described embodiment, the operation of the heat source of the entire facility so that the heat source water is set to the set temperature state before the heat source (heat utilization unit) in the specific food manufacturing facility among the plurality of food manufacturing facilities. By controlling the above, it is possible to appropriately use heat in the specific food production facility.
In addition, the heat source system according to the present invention is not limited to food production facilities, and can be applied to various facilities and facilities having a heat source and a plurality of heat utilization units.

(6) In the said embodiment, the some heat source 1 can also be provided. For example, as shown in FIG. 3, each of the buildings 6 a to 6 d such as food manufacturing facilities is provided with a heat source 1 and a heat utilization unit 7, and the heat source 1 and the heat utilization unit 7 in each building 6 a to 6 d are provided by the circulation path 3. Connect. The heat source 1 is configured such that the heat source water N in the circulation path 3 can be adjusted to a set temperature state in a form in which the heat source water N drawn from the circulation path 3 is heated or cooled and returned to the circulation path 3. The heat utilization unit 7 heats the heat source water N drawn from the circulation path 3 and returns the heat source water N after the heat utilization to the circulation path 3. The heat utilization unit 7 is not limited to the one having the single heat utilization unit 7 in each of the buildings 6a to 6b, but can also include a plurality of heat utilization units 7, and the number thereof can be changed as appropriate. As the heat utilization unit 7, various heat utilization units such as the first thermal utilization unit 4a, the first cold utilization unit 4b, the second thermal utilization unit 5a, and the second cold utilization unit 5b in the above embodiment can be applied. . The number of buildings can be changed as appropriate.

  In the one shown in FIG. 3, various types of control can be applied as the control of the control unit that controls the operation of the heat source 1 in each of the buildings 6 a to 6 d, for example, the control unit is 1 in the circulation direction of the heat source water N. The operation of the heat source 1 in each of the buildings 6a to 6d can be controlled so that the temperature state of the heat source water N supplied to the buildings 6a to 6d located on the downstream side becomes the set temperature state. At this time, for example, for the heat source 1 in the building 6a, the control unit controls the operation of the heat source 1 in the building 6a so that the temperature state of the heat source water N supplied to the building 6b becomes a set temperature state.

  In what is shown in FIG. 3, the heat source water N in the circulation path 3 flows through the buildings 6 a to 6 d in the order of the heat utilization unit 7 and the heat source 1, but conversely, the heat source water N in the circulation path 3 is In each building 6a-6d, the heat source 1 and the heat utilization part 7 can also be connected to the circulation path 3 so that the heat source 1 and the heat utilization part 7 flow in this order. In this case, a control part controls the driving | operation of the heat source 1 in each building 6a-6d so that the temperature state of the heat source water N supplied to the heat utilization part 7 in each building 6a-6d becomes a preset temperature state. be able to. That is, the control unit controls the operation of the heat source 1 in the building 6a so that the temperature state of the heat source water N supplied to the heat utilization unit 7 in the building 6a becomes the set temperature state.

  3, the heat source 1 and the heat utilization unit 7 are separately connected to the circulation path 3, and each of the heat source 1 and the heat utilization part 7 draws in the heat source water N of the circulation path 3 and draws it in. The heat source water N is returned to the circulation path 3. For example, a flow path that connects the heat source 1 and the heat utilization unit 7 in series is provided, and the upstream end and the downstream end of the flow path are circulated. The heat source water N that is connected to the path 3 and drawn from the circulation path 3 is passed in the order of the heat utilization part 7 and the heat source 1 or in the order of the heat source 1 and the heat utilization part 7 and then returned to the circulation path 3. May be. The various controls described above can also be applied to the control of the control unit in this case.

  In the thing shown in FIG. 3, although the heat source 1 is provided in each building 6a-6d, it replaces with each of these buildings 6a-6d, or in addition to each of these buildings 6a-6d, the buildings 6a- in the circulation path 3 The heat source 1 can also be provided in the flow path part between 6d. That is, the installation position and the number of installed heat sources 1 can be changed as appropriate.

  3, the heat source 1 is not limited to a temperature / cold heat source provided with a heat source that heats the heat source water N and a cold heat source that cools the heat source water N, but only a heat source that heats the heat source water N. It is possible to apply a dedicated heat source provided with a temperature or a dedicated heat source provided only with a cold heat source that cools the heat source water N. For example, in FIG. 3, when the heat source 1 in the buildings 6a and 6c is a heat source dedicated to cold, and the heat source 1 in the buildings 6b and 6d is a heat source dedicated to temperature, the control unit performs the temperature of the heat source water N supplied to the building 6c. The operation of the heat source 1 in the building 6a and the building 6b is controlled so that the state becomes the set temperature state, and the building 6c and the building 6d are set so that the temperature state of the heat source water N supplied to the building 6a becomes the set temperature state. The operation of the heat source 1 can be controlled.

(7) In FIG. 3 in the above-described embodiment and the above-described (6), the control unit performs the first mode for performing the above-described control and specific heat utilization units 4, 5, and 7 such as a manufacturing processing apparatus system. It is configured to be switchable to a second mode for controlling the operation of the heat source 1 so as to supply the heat source water N in the set temperature state, and is switched to the first mode in normal times and switched to the second mode in the case of an abnormality such as a failure. Can do. As a result, even when there is an abnormality such as a failure, the heat source water N in the set temperature state is supplied to the specific heat utilization units 4, 5, 7 to appropriately use the heat in the specific heat utilization units 4, 5, 7. It can be carried out. As described above, the control unit is not limited to performing the above-described control at all times, and may perform other control in addition to the above-described control.

DESCRIPTION OF SYMBOLS 1 Heat source 3 Circulation path 3a Outbound path 3b Return path 4 1st heat utilization part (heat utilization part)
5 Second heat utilization part (heat utilization part)
7 Heat utilization part N Heat source water 100 Heat source system

Claims (3)

A heat source that adjusts the heat source water to a set temperature state, and a circulation path that circulates and supplies the heat source water from the heat source to a plurality of heat utilization units,
Cold heat using the heat source water as a cold heat medium by transferring heat between the heat source water and the heat source water as a heat medium by using the heat source water as a heat medium by transferring heat between the heat source water and the heat source water With a user department ,
The plurality of heat utilization units include a first heat utilization unit that intermittently utilizes heat and a second heat utilization unit that continuously utilizes heat,
When heat is used in the first heat utilization part, the heat application to the heat source water by the heat source is limited than in other cases,
The heat application is limited in accordance with the heat utilization start point by the first heat utilization unit .   The circulation path includes a forward path for supplying heat source water from the heat source to the plurality of heat utilization units and a return path for joining the heat source water from the plurality of heat utilization units and returning them to the heat source. Item 2. The heat source system according to Item 1. 3. The heat source according to claim 1, wherein heat application to the heat source water by the heat source is limited by setting the set temperature state to a limit temperature state that becomes a wider range or by limiting an output of the heat source. system.

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