Heat transfer medium combination optimization apparatus, heat transfer medium combination optimization method, and heat transfer medium combination optimization program

Abstract

To set an optimized combination of heat exchanges among respective facilities in such a way that the amount of heat supplied to the facility where heating should be carried out becomes the maximum.SOLUTION: A heat medium combination optimizing device 1 includes: a temperature control unit 13 which supplies, to any one of a plurality of objects, each of a plurality of first heat media having undergone heat exchange among a plurality of supply-side facilities, and which controls the object so as to have an aiming temperature; and an optimizing unit 11 which optimizes the combination of the amount of the first heat medium having undergone the heat exchange with each supply-side facility with the object in such a way that the total of the amount of heat supplied to the plurality of objects becomes the maximum.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a heat transfer medium combination optimization apparatus, a heat transfer medium combination optimization method, and a heat transfer medium combination optimization program, and more particularly to setting a suitable heat exchange combination among various pieces of equipment. [Background technology]

[0002] Patent Document 1 describes an energy system planning support device. The objective of the invention described in Patent Document 1 is to automatically generate equipment configurations that take into account not only cost and capacity, but also equipment lifespan, maintenance, and space saving. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 4-90043 [Overview of the project] [Problems that the invention aims to solve]

[0004] However, the technology described in Patent Document 1 was intended to evaluate the economics of the equipment and did not take into consideration the heat exchange efficiency between the equipment. Incidentally, a key challenge in reducing carbon dioxide emissions is the effective utilization of waste heat. To effectively utilize waste heat, it is advisable to supply a heat transfer medium heated in high-temperature equipment to other equipment at lower temperatures to heat those other pieces of equipment. However, the optimal combination of heat exchange between these pieces of equipment had not been considered.

[0005] This invention aims to provide a heat transfer medium combination optimization device, a heat transfer medium combination optimization method, and a heat transfer medium combination optimization program that can set the optimal heat exchange combination between each piece of equipment so that the amount of heat supplied to the equipment to be heated is maximized, in order to solve the above-mentioned problems. In turn, this will contribute to mitigating or reducing the impact of climate change. [Means for solving the problem]

[0006] The invention described in claim 1 is a heat transfer medium combination optimization device comprising: a temperature control unit that supplies a plurality of first heat transfer mediums, each having exchanged heat with a plurality of supply-side equipment, to one of a plurality of objects, and controls the objects to reach their respective target temperatures; and an optimization unit that optimizes the combination of the amount of first heat transfer medium exchanged with each of the supply-side equipment and the objects so as to maximize the total amount of heat supplied to the plurality of objects, wherein the temperature control unit each Multiple first heat transfer fluids that have exchanged heat with the aforementioned supply-side equipment The process involves selecting the temperature of each supply-side equipment in ascending order, and supplying the selected first heat transfer medium to the objects selected in descending order of their target temperatures to perform heat exchange with those objects. It is characterized by repetition. According to this invention, it is possible to provide a heat transfer medium combination optimization device that can set the optimal heat exchange combination between each piece of equipment so that the amount of heat supplied to the equipment to be heated is maximized. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a heat transfer medium combination optimization device, a heat transfer medium combination optimization method, and a heat transfer medium combination optimization program that can set the optimal heat exchange combination between each piece of equipment so that the amount of heat supplied to the equipment to be heated is maximized. [Brief explanation of the drawing]

[0008] [Figure 1] This is a block diagram of a heat transfer medium combination optimization device according to one embodiment of the present invention. [Figure 2]This is a graph showing valuable heat quantities in high-temperature heat and low-temperature heat. [Figure 3] This is a graph explaining high-quality heat quantities in high-temperature heat. [Figure 4A] This is a graph showing waste heat in the first case. [Figure 4B] This is a graph showing the waste heat demand, allocated amount, and remaining temperature conditions in the first case. [Figure 4C] This is a graph showing the heat quantity conditions in the intermediate process of the waste heat demand, allocated amount, and remainder in the first case. [Figure 4D] This is a graph showing the heat quantity conditions in the hypothetical final process of the waste heat demand, allocated amount, and remainder in the first case. [Figure 5A] This is a graph showing waste heat in the second case. [Figure 5B] This is a graph showing the waste heat demand, allocated amount, and remaining temperature conditions in the second case. [Figure 5C] This is a graph showing the heat quantity conditions in the intermediate process of the waste heat demand, allocated amount, and remainder in the second case. [Figure 5D] This is a graph showing the heat quantity conditions in the hypothetical final process of the waste heat demand, allocated amount, and remainder in the second case. [Figure 6A] This is a graph showing waste heat in the third case. [Figure 6B] This is a graph showing the waste heat demand, allocated amount, and remaining temperature conditions in the third case. [Figure 6C] This is a graph showing the heat quantity conditions in the intermediate process of the waste heat demand, allocated amount, and remainder in the third case. [Figure 6D] This is a graph showing the heat quantity conditions in the hypothetical final process of the waste heat demand, allocated amount, and remainder in the third case. [Figure 7A] This is a graph showing waste heat in the fourth case. [Figure 7B] This is a graph showing the waste heat demand, allocated amount, and remaining temperature conditions in the fourth case. [Figure 7C] This is a graph showing the heat quantity conditions in the intermediate process of the waste heat demand, allocated amount, and remainder in the fourth case. [Figure 7D]This graph shows the heat demand, allocation, and remaining heat conditions in the hypothetical final process for the fourth case. [Figure 8] This is a flowchart illustrating the process of supplying a heat transfer medium from the supply-side equipment to the target object. [Figure 9] This is a flowchart for a process using multiple types of heat transfer fluids. [Figure 10] This is a flowchart illustrating a process using multiple types of heat transfer fluids, taking into account heat dissipation through piping. [Figure 11] This diagram illustrates the operation of the plant during the initial startup of the third device. [Figure 12] This diagram illustrates the operation of the plant during the initial startup of all equipment. [Figure 13] This diagram illustrates the operation of the plant under steady-state conditions. [Figure 14] This diagram illustrates the operation of the plant during daytime hours. [Figure 15] This diagram illustrates the operation of the plant during shutdown. [Figure 16] This diagram illustrates the operation of the plant during the shutdown phase after the first and second units have stopped. [Figure 17] This diagram shows a process layer that calculates the heat dissipation rate of the piping. [Figure 18] This graph shows the heat storage and heat release operation pattern A for a heat storage means. [Figure 19] This graph shows the heat storage and heat release operation pattern B for the heat storage means. [Modes for carrying out the invention]

[0009] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, each element in the drawings may be enlarged, reduced, or simplified as appropriate to facilitate understanding of the invention.

[0010] Figure 1 is a block diagram of a heat transfer medium combination optimization apparatus 1 according to one embodiment of the present invention. The heat transfer medium combination optimization device 1 shown in Figure 1 comprises an optimization unit 11, a heat dissipation amount calculation unit 12, a temperature control unit 13, a storage unit 14, and an environmental sensor 15. The heat transfer medium combination optimization device 1 sets the optimal heat exchange combination between the equipment in plant 2 and effectively utilizes the waste heat from each piece of equipment according to this setting.

[0011] The optimization unit 11 sets the optimal heat exchange combination between each piece of equipment so that the total amount of heat supplied to the equipment of plant 2 is maximized. The temperature control unit 13 supplies the multiple heat transfer fluids that have been heat-exchanged with each of the multiple supply-side equipment to one of the multiple target objects and controls the target objects to reach their respective target temperatures. The temperature control unit 13 repeats the process of heat-exchanging multiple target objects in descending order of the target temperatures of each object using the multiple heat transfer fluids that have been heat-exchanged with each of the supply-side equipment, by selecting the multiple first heat transfer fluids that have been heat-exchanged with each of the supply-side equipment in ascending order of the temperatures of each supply-side equipment.

[0012] The heat dissipation calculation unit 12 calculates the amount of heat lost through heat dissipation as the heat transfer medium flows through the piping. The storage unit 14 stores heat capacity data for each piece of equipment and heat capacity data for each heat transfer medium. The environmental sensor 15 detects environmental information such as transcription information, temperature and humidity information, atmospheric pressure information, and date and time information.

[0013] The controlled Plant 2 comprises a first device 21, a second device 22, a third device 23, and a fourth device 24. The first device 21 is supplied with a heat transfer medium from other equipment via valves 221, 231, and 241, as well as newly supplied with natural gas and electricity. The amount of heat supplied by natural gas and electricity is indicated by X0. Flow meters and thermometers are installed near valves 221, 231, and 241, respectively, to measure the amount and temperature of the heat transfer medium supplied to the first device 21.

[0014] The heat transfer medium combination optimization device 1 adjusts the opening of valve 221 to determine how much of the heat transfer medium heated by the waste heat of the second device 22 is supplied to the first device 21. Here, the amount of heat supplied from the second device 22 is shown as Y4.

[0015] The heat transfer medium combination optimization device 1 adjusts the opening of valve 231 to determine how much of the heat transfer medium heated by the waste heat of the third device 23 is supplied to the first device 21. Here, the amount of heat supplied from the third device 23 is indicated by Z4.

[0016] The heat transfer medium combination optimization device 1 adjusts the opening of valve 241 to determine how much of the heat transfer medium heated by the waste heat of the fourth device 24 is supplied to the first device 21. Here, the amount of heat supplied from the fourth device 24 is shown as W4. The amount of heat on the heat input side of the first device 21 is shown by X1, and the amount of heat on the heat discharge side is shown by X2. The final heat discharged from the first device 21 is shown by X3.

[0017] The second device 22 is supplied with a heat transfer medium from other equipment via valves 232 and 242, as well as newly supplied with natural gas and electricity. The amount of heat supplied by natural gas and electricity is indicated by Y0. A flow meter and a thermometer are installed near valves 232 and 242, respectively, to measure the amount and temperature of the heat transfer medium supplied to the second device 22.

[0018] The heat transfer medium combination optimization device 1 adjusts the opening of valve 232 to determine how much of the heat transfer medium heated by the waste heat of the third device 23 is supplied to the second device 22. Here, the amount of heat supplied from the third device 23 is indicated by Z5.

[0019] The heat transfer medium combination optimization device 1 adjusts the opening of valve 242 to determine how much of the heat transfer medium heated by the waste heat of the fourth device 24 is supplied to the second device 22. The amount of heat supplied from the third device 23 is shown by W5. The heat input of the second device 22 is denoted by Y1, and the heat output is denoted by Y2. The final heat output of the second device 22 is denoted by Y3.

[0020] The third device 23 is supplied with a heat transfer medium from other equipment via valves 213, 223, and 243, as well as newly supplied with natural gas and electricity. The amount of heat supplied by natural gas and electricity is indicated by Z0. Flow meters and thermometers are installed near valves 213, 223, and 243, respectively, to measure the amount and temperature of the heat transfer medium supplied to the third device 23.

[0021] The heat transfer medium combination optimization device 1 adjusts the opening of valve 213 to determine how much of the heat transfer medium heated by the waste heat of the first device 21 is supplied to the third device 23. Here, the amount of heat supplied from the first device 21 is shown as X6.

[0022] The heat transfer medium combination optimization device 1 adjusts the opening of valve 223 to determine how much of the heat transfer medium heated by the waste heat of the second device 22 is supplied to the third device 23. Here, the amount of heat supplied from the second device 22 is shown as Y6.

[0023] The heat transfer medium combination optimization device 1 adjusts the opening of valve 243 to determine how much of the heat transfer medium heated by the waste heat of the fourth device 24 is supplied to the third device 23. Here, the amount of heat supplied from the fourth device 24 is shown as W6. The heat input of the third device 23 is shown by Z1, and the heat output is shown by Z2. The final heat output of the third device 23 is shown by Z3.

[0024] The fourth device 24 is supplied with a heat transfer medium from other equipment via valves 214, 224, and 234, as well as newly supplied with natural gas and electricity. The amount of heat supplied by natural gas and electricity is indicated by W0. Flow meters and thermometers are installed near valves 214, 224, and 234, respectively, to measure the amount and temperature of the heat transfer medium supplied to the fourth device 24.

[0025] The heat transfer medium combination optimization device 1 adjusts the opening of valve 214 to determine how much of the heat transfer medium heated by the waste heat of the first device 21 is supplied to the fourth device 24. Here, the amount of heat supplied from the first device 21 is shown by X7. The heat transfer medium combination optimization device 1 adjusts the opening of valve 224 to determine how much of the heat transfer medium heated by the waste heat of the second device 22 is supplied to the fourth device 24. Here, the amount of heat supplied from the second device 22 is shown as Y7.

[0026] The heat transfer medium combination optimization device 1 adjusts the opening of valve 234 to determine how much of the heat transfer medium heated by the waste heat of the third device 23 is supplied to the fourth device 24. Here, the amount of heat supplied from the third device 23 is indicated by Z7. The heat input of the fourth device 24 is shown by W1, and the heat output is shown by W2. The final heat output of the fourth device 24 is shown by W3.

[0027] Figure 2 is a graph showing the valuable amount of heat in terms of thermal and cooling. In the graph shown in Figure 2, the vertical axis represents absolute temperature, and the horizontal axis represents heat capacity. Temperature Ta represents, for example, the temperature of the object. In the graph on the left, the rectangle representing heat quantity has a height corresponding to the temperature Tb of the supplying equipment, a width corresponding to the heat capacity Cb, and an area corresponding to the amount of heat possessed by the supplying equipment. Here, the portion of the heat quantity rectangle that exceeds temperature Ta represents the amount of heat possessed by the supplying equipment that actually has value as thermal energy.

[0028] In the graph on the right, the rectangle representing heat quantity has a height corresponding to the temperature Tc of the supplying equipment, a width corresponding to the heat capacity Cc, and an area corresponding to the amount of heat possessed by the supplying equipment. The hatched area, which is wider than the heat capacity Cc and greater than the temperature Tc, and lower than the temperature Ta, corresponds to the amount of heat possessed by the supplying equipment that actually has value as cooling energy. The following describes embodiments that utilize thermal energy, but the present invention may also be used to utilize cold energy, and is not limited thereto.

[0029] Figure 3 is a graph illustrating the high-quality heat quantity in thermal energy. The heat quantity 51 is the heat quantity possessed by the first equipment, and the temperature of this first equipment is Tb. The heat quantity 52 is the heat quantity possessed by the second equipment, and the temperature of this second equipment is Tc. In this case, the heat quantity 51 of the first equipment is sufficient to satisfy the heat demand of the object at the target temperature Ta. However, the heat quantity 52 of the second equipment can only contribute up to the heat demand 55 of the object at the target temperature Ta up to temperature Tc.

[0030] Therefore, the temperature control unit 13 repeatedly assigns the heat transfer medium from the coldest supply-side equipment to the target equipment in descending order of the target temperature of the object requiring heating, and controls this to be repeated in ascending order of the supply-side equipment temperatures.

[0031] A heat transfer medium from a supply-side equipment with a lower temperature can be allocated to fewer objects compared to a heat transfer medium from a supply-side equipment with a higher temperature. Furthermore, when the target temperature of an object is higher, the amount of heat transfer medium from the supply-side equipment that can be allocated to that object decreases even further. This is because a heat transfer medium from a supply-side equipment with a temperature lower than the target temperature of the object cannot transfer heat.

[0032] Therefore, the temperature control unit 13 sequentially assigns the heat transfer medium of the supply-side equipment, or the object, to which the assignment combinations are limited. This allows the temperature control unit 13 to reduce the amount of heat transfer medium and heat that cannot be assigned, and to find the best assignment without performing a brute-force calculation.

[0033] To explain this, I will describe the following four cases. Case 1 In the first case, the temperature control unit 13 repeatedly assigns the heat transfer medium from the hottest supply-side equipment to the target equipment in descending order of the target temperature of the object requiring heating, and repeats this process in descending order of the supply-side equipment temperature. For simplification, here we have two supply-side equipment units, one high temperature and one low temperature, and two target objects: a first object with a high target temperature and a second object with a low target temperature.

[0034] Figure 4A is a graph showing the heat dissipation in the first case. As shown in Figure 4A, the high-temperature supply equipment dissipates heat 51 from the high-temperature heat transfer medium. The heat transfer medium that dissipates heat 51 has a temperature of Tb. The low-temperature supply equipment then dissipates heat 52 from the low-temperature heat transfer medium. The heat transfer medium that dissipates heat 52 has a temperature of Tc.

[0035] Figure 4B is a graph showing the waste heat demand, allocated amount, and surplus temperature conditions in the first case. As shown in Figure 4B, the heat demand 53 represents the amount of heat required for the first object. The height of the heat demand 53 graph represents the target temperature Td of the first object, and the width of the heat demand 53 graph represents the heat capacity of the first object. The heat demand 54 represents the amount of heat required for the second object. The height of the heat demand 54 graph represents the target temperature Tf of the second object, and the width of the heat demand 54 graph represents the heat capacity of the second object.

[0036] The temperature control unit 13 supplies a heat transfer medium having a heat quantity 51 from the high-temperature supply equipment to the first object with the highest target temperature and demanded heat quantity 53. Next, the temperature control unit 13 supplies a heat transfer medium having a heat quantity 521, which is a portion of the heat quantity 52 from the low-temperature supply equipment, to the first object with the highest target temperature and demanded heat quantity 53. Then, the temperature control unit 13 supplies a heat transfer medium having a heat quantity 522, which is a portion of the heat quantity 52 from the low-temperature supply equipment, to the object with the lower target temperature and demanded heat quantity 54. The heat transfer medium having a heat quantity 523 is the remainder.

[0037] Figure 4C is a graph showing the heat requirements, allocation, and surplus heat conditions in the intermediate process for the first case. As shown in Figure 4C, the heat quantity 522 obtained by dividing the heat quantity 52 has an area on the graph equal to the heat demand quantity 54. When the temperature control unit 13 supplies a heat medium containing the heat quantity 522 to the second object, the heat quantity 522 is averaged out, the second object reaches the target temperature Tf, and thus the heat demand quantity 54 can be fully satisfied.

[0038] Figure 4D is a graph showing the heat demand, allocation, and remaining heat conditions in the hypothetical final process for the first case. As shown in Figure 4D, in this virtual final process, the heat transfer medium with excess heat quantity 523 is heated, for example by a heat pump, and supplied to the heat quantity 524 of the heat demand quantity 53. This first case has the drawbacks of requiring a large amount of computation and generating unused heat transfer fluid during the intermediate process.

[0039] Case 2 In the second case, the temperature control unit 13 repeatedly assigns the heat transfer medium from the coldest supply-side equipment to the target equipment in descending order of the target temperature of the object requiring heating, and repeats this process in ascending order of the supply-side equipment temperature. For simplification, here we have two supply-side equipment units, one high temperature and one low temperature, and two target objects: a first object with a high target temperature and a second object with a low target temperature.

[0040] Figure 5A is a graph showing the heat dissipation in the second case. As shown in Figure 5A, the high-temperature supply equipment dissipates heat 51 from the high-temperature heat transfer medium. The heat transfer medium that dissipates heat 51 has a temperature of Tb. The low-temperature supply equipment then dissipates heat 52 from the low-temperature heat transfer medium. The heat transfer medium that dissipates heat 52 has a temperature of Tc.

[0041] Figure 5B is a graph showing the waste heat demand, allocation, and surplus temperature conditions in the second case. As shown in Figure 5B, the heat demand 53 represents the amount of heat required for the first object. The height of the heat demand 53 is the target temperature Td of the first object, and the width of the heat demand 53 is the heat capacity of the first object. The heat demand 54 represents the amount of heat required for the second object. The height of the heat demand 54 graph represents the target temperature Tf of the second object, and the width of the heat demand 54 graph represents the heat capacity of the second object.

[0042] The temperature control unit 13 provides the first object with as much heat as possible from a portion of the low-temperature supply equipment containing a heat quantity of 523, heating it to temperature Tc, and provides the remaining heat quantity 524 from the low-temperature supply equipment to the second object. Furthermore, the temperature control unit 13 provides the first object with as much heat as possible from a portion of the high-temperature supply equipment containing a heat quantity of 513, and provides the remaining heat quantity 514 from the high-temperature supply equipment to the second object.

[0043] Figure 5C is a graph showing the heat requirements, allocation, and surplus heat conditions in the intermediate process for the second case. As shown in Figure 5C, the first object can be heated to temperature Tc by the heat quantity 523 contained in the heat transfer medium supplied to the first object, which has a heat quantity of 52. In that state, the first object can be heated to temperature Tb by the heat quantity 514 contained in the heat transfer medium supplied to the first object, which has a heat quantity of 51. The heat transfer medium having a heat quantity of 52, specifically the heat quantity 524 contained in the heat transfer medium supplied to the second object, and the heat transfer medium having a heat quantity of 51, specifically the heat quantity 514 contained in the heat transfer medium supplied to the second object, can heat the object to near the target temperature Tf.

[0044] Figure 5D is a graph showing the heat demand, allocation, and remaining heat conditions in the hypothetical final process for the second case. As shown in Figure 5D, in this second case, there is no excess heat transfer fluid, so there is no change in the virtual final process. This second case is the best because it requires less computation and does not generate unused heat transfer fluid in the intermediate process.

[0045] Case 3 In the third case, the temperature control unit 13 repeatedly assigns the heat transfer medium from the hottest supply-side equipment to the target equipment in ascending order of the target temperature of the object requiring heating, and repeats this process in descending order of the supply-side equipment temperatures. For simplification, here we have two supply-side equipment units, one high-temperature and one low-temperature, and two target objects: a first object with a high target temperature and a second object with a low target temperature.

[0046] Figure 6A is a graph showing the heat dissipation in the third case. As shown in Figure 6A, the high-temperature supply equipment dissipates heat 51 from the high-temperature heat transfer medium. The heat transfer medium that dissipates heat 51 has a temperature of Tb. The low-temperature supply equipment then dissipates heat 52 from the low-temperature heat transfer medium. The heat transfer medium that dissipates heat 52 has a temperature of Tc.

[0047] Figure 6B is a graph showing the waste heat demand, allocation, and surplus temperature conditions in the third case. As shown in Figure 6B, the heat demand 53 represents the amount of heat required for the first object. The height of the heat demand 53 is the target temperature Td of the first object, and the width of the heat demand 53 is the heat capacity of the first object. The heat demand 54 represents the amount of heat required for the second object. The height of the heat demand 54 graph represents the target temperature Tf of the second object, and the width of the heat demand 54 graph represents the heat capacity of the second object. The temperature control unit 13 supplies a heat transfer medium with a heat quantity of 516 from a portion of the high-temperature supply equipment to the second target object with a lower target temperature and a demand for heat quantity of 54. In this state, the demand for heat quantity 54 required by the second target object is met. Next, the temperature control unit 13 supplies the remaining heat transfer medium with a heat quantity of 515 from the high-temperature supply equipment to the first target object with the highest target temperature and a demand for heat quantity of 53.

[0048] The temperature control unit 13 supplies a portion of the heat transfer medium with a heat quantity of 525 from the low-temperature supply equipment to the first target object with a high target temperature and demanded heat quantity of 53. The remaining heat transfer medium from the low-temperature supply equipment has a heat quantity of 526.

[0049] Figure 6C is a graph showing the heat requirements, allocation, and surplus heat conditions in the intermediate process for the third case. As shown in Figure 6C, the first object can be heated to temperature Tc by the heat quantity 525 contained in the heat transfer medium supplied to the first object, out of a heat transfer medium having a heat quantity of 52. In that state, it can be further heated by the heat quantity 515 contained in the heat transfer medium supplied to the first object, out of a heat transfer medium having a heat quantity of 51. Of the heat transfer fluids having a heat quantity of 51, the heat quantity of 516 contained in the heat transfer fluid supplied to the second object can heat the second object to the target temperature Tf.

[0050] Figure 6D is a graph showing the heat demand, allocation, and remaining heat conditions in the hypothetical final process for the third case. As shown in Figure 6D, the heat quantity 526 is obtained by raising the temperature of the excess heat transfer medium using a heat pump or the like, further heating the first object. This allows the first object to be heated to a temperature above the load-average temperature. This third case has the drawbacks of requiring a large amount of computation and generating unused heat transfer fluid during the intermediate process.

[0051] Case 4 In the fourth case, the temperature control unit 13 repeatedly assigns the heat transfer medium from the coldest supply-side equipment to the target equipment in ascending order of the target temperatures of the objects requiring heating, and repeats this process in ascending order of the supply-side equipment temperatures. For simplification, here we have two supply-side equipment units, one high temperature and one low temperature, and two target objects: a first object with a high target temperature and a second object with a low target temperature.

[0052] Figure 7A is a graph showing the heat dissipation in the fourth case. As shown in Figure 7A, the high-temperature supply equipment dissipates heat 51 from the high-temperature heat transfer medium. The heat transfer medium that dissipates heat 51 has a temperature of Tb. The low-temperature supply equipment then dissipates heat 52 from the low-temperature heat transfer medium. The heat transfer medium that dissipates heat 52 has a temperature of Tc.

[0053] Figure 7B is a graph showing the waste heat demand, allocation, and surplus temperature conditions in the fourth case. As shown in Figure 7B, the heat demand 53 represents the amount of heat required for the first object. The height of the heat demand 53 is the target temperature Td of the first object, and the width of the heat demand 53 is the heat capacity of the first object. The heat demand 54 represents the amount of heat required for the second object. The height of the heat demand 54 graph represents the target temperature Tf of the second object, and the width of the heat demand 54 graph represents the heat capacity of the second object.

[0054] The temperature control unit 13 supplies a portion of the heat transfer medium containing a heat quantity of 528 from the low-temperature supply equipment to the second target object with a lower target temperature and a demand for heat quantity of 54. In this state, the demand for heat quantity 54 required by the second target object is met. Next, the temperature control unit 13 supplies the remaining heat transfer medium containing a heat quantity of 527 from the low-temperature supply equipment to the first target object with a higher target temperature and a demand for heat quantity of 53. Furthermore, the temperature control unit 13 supplies all of the heat transfer medium having a heat quantity 51 from the high-temperature supply equipment to the first target object with a high target temperature and demanded heat quantity 53.

[0055] Figure 7C is a graph showing the heat requirements, allocation, and surplus heat conditions in the intermediate process for the fourth case. As shown in Figure 7C, the first object can be heated to a predetermined temperature by the heat quantity 527 contained in the heat transfer medium supplied to the first object, out of a heat transfer medium having a heat quantity of 52. In that state, the first object can be heated to an even higher temperature by a heat transfer medium having a heat quantity of 51. Of the heat transfer fluids having a heat quantity of 52, the heat quantity of 528 contained in the heat transfer fluid supplied to the second object can heat the second object to the target temperature Tf.

[0056] Figure 7D is a graph showing the heat demand, allocation, and remaining heat conditions in the hypothetical final process for the fourth case. As shown in Figure 7D, in this fourth case, there is no excess heat transfer fluid, so there is no change in the virtual final process. This fourth case has the advantage of requiring less computation, but it has the disadvantage of introducing an intensive deficiency condition.

[0057] As can be seen by comparing the first and third cases with the second and fourth cases, supplying the heat transfer medium to the object with a lower target temperature results in an increase in excess heat transfer medium. Furthermore, as can be seen by comparing Case 1 and Case 2 with Case 3 and Case 4, if the distribution to the target object is started prioritizing the heat transfer medium with a higher temperature in the supplying equipment, the heat transfer medium with a lower temperature in the supplying equipment will be left over. Therefore, Case 2 is the most appropriate distribution.

[0058] Figure 8 is a flowchart illustrating the process of supplying the heat transfer medium from the supply-side equipment to the target object. As shown in Figure 8, first, the temperature control unit 13 selects the supply equipment in ascending order of the temperature of the supply equipment (step S10). Next, the temperature control unit 13 selects the target objects in descending order of the target temperature of the target objects (step S11). The temperature control unit 13 supplies a predetermined amount of the medium, which has undergone heat exchange with the selected supply equipment, to the target object. The temperature control unit 13 determines whether all objects have been selected (step S13). If there are any unselected objects, the process returns to step S11; if all objects have been selected, the process proceeds to step S14. In step S14, the temperature control unit 13 determines whether all supply-side equipment has been selected. If there is any unselected supply-side equipment, the process returns to step S10. If all supply-side equipment has been selected, the process shown in Figure 8 is terminated.

[0059] Figure 9 is a flowchart of a process using multiple types of heat transfer fluids. As shown in Figure 9, the temperature control unit 13 combines the first heat transfer medium of the heat supply equipment and the second heat transfer medium of the object to be heated with the same type (step S20). Here, the first and second heat transfer mediums exchange heat through a heat exchanger (not shown). Next, the temperature control unit 13 combines the remaining first heat transfer medium of the heat supply equipment with the second heat transfer medium of the object to be heated with different types (step S21), and then completes the process shown in Figure 9.

[0060] Figure 10 is a flowchart of a process using multiple types of heat transfer fluids, taking into account heat dissipation in the piping. As shown in Figure 10, the temperature control unit 13 takes into account the length of the piping between the objects and combines the first heat transfer medium of the supply-side equipment that supplies the heat with the second heat transfer medium of the object to be heated, using the same type (step S30). Next, the temperature control unit 13 takes into account the length of the piping between the objects and combines the remaining first heat transfer medium of the supply-side equipment with the second heat transfer medium of the object to be heated, using different types (step S31), thereby ending the process shown in Figure 9.

[0061] Figure 11 is a diagram illustrating the operation of the plant during the initial startup of the third device 23. As shown in Figure 11, initially, the temperature control unit 13 supplies the third device 23 with an amount of natural gas corresponding to heat quantity Z0. The energy input to the third device 23 corresponds to heat quantity Z1. The energy primarily used by the third device 23 corresponds to heat quantity Z2. The waste heat from the third device 23 is heat quantity Z3.

[0062] Figure 12 is a diagram illustrating the operation of the plant during the startup of all equipment. As shown in Figure 12, the temperature control unit 13 supplies natural gas equivalent to heat quantity X0 to the first device 21. Furthermore, the temperature control unit 13 supplies heat quantity Y4 of the heat transfer medium heated in the second device 22, heat quantity Z4 of the heat transfer medium heated in the third device 23, and heat quantity W4 of the heat transfer medium heated in the fourth device 24. The first device 21 is supplied with heat quantity X1 equivalent to (X0 + Y4 + Z4 + W4). The heat transfer medium is heated by the first device 21, and heat quantity X2 is output. Of the heat transfer medium having heat quantity X2, the portion having heat quantity X6 is supplied to the third device 23, and the portion having heat quantity X7 is supplied to the fourth device 24.

[0063] The temperature control unit 13 supplies natural gas equivalent to heat quantity Y0 to the second device 22. Then, heat quantity Y1 equivalent to heat quantity Y0 is supplied to the second device 22. The heat transfer medium is heated by the second device 22, and heat quantity Y2 is output. The heat transfer medium having heat quantity Y2 is supplied to the first device 21. That is, heat quantity Y2 and heat quantity Y4 are equal.

[0064] The temperature control unit 13 supplies a portion of the heat transfer medium heated by the first device 21 to the third device 23, thereby supplying heat quantity X6 to the third device 23. The heat quantity Z1 on the input side of the third device 23 is equal to the heat quantity X6. The heat transfer medium is heated by the third device 23, and heat quantity Z2 is output. The heat transfer medium having heat quantity Z2 is supplied to the first device 21. That is, heat quantity Z2 and heat quantity Z4 are equal.

[0065] The temperature control unit 13 supplies natural gas equivalent to the heat quantity W0 and a portion of the heat transfer medium heated by the first device 21 to the fourth device 24, thereby supplying the heat quantity X7 to the fourth device 24. The heat quantity W1 on the input side of the fourth device 24 is equal to the heat quantity (X7 + W0). The heat transfer medium is heated by the fourth device 24, and a heat quantity W2 is output. The heat transfer medium having a heat quantity W2 is supplied to the first device 21. That is, the heat quantities W2 and W4 are equal.

[0066] Figure 13 illustrates the operation of plant 2 under steady-state conditions. As shown in Figure 13, the temperature control unit 13 supplies the heat quantity Y4 of the heat transfer medium heated in the second device 22, the heat quantity Z4 of the heat transfer medium heated in the third device 23, and the heat quantity W4 of the heat transfer medium heated in the fourth device 24. The first device 21 is supplied with a heat quantity X1 equivalent to (Y4 + Z4 + W4). The heat transfer medium is heated by the first device 21, and a heat quantity X2 is output. Of the heat transfer medium having a heat quantity X2, the portion having a heat quantity X6 is supplied to the third device 23, and the portion having a heat quantity X7 is supplied to the fourth device 24.

[0067] The temperature control unit 13 supplies natural gas equivalent to the heat quantity Y0 to the second device 22 and supplies the heat quantity W5 of the heat transfer medium heated in the fourth device 24. Then, the second device 22 is supplied with a heat quantity Y1 equivalent to the heat quantity (Y0 + W5). The heat transfer medium is heated by this second device 22 and a heat quantity Y2 is output. The heat transfer medium having a heat quantity Y2 is supplied to the first device 21 and the fourth device 24. That is, the heat quantity Y2 is equal to the heat quantity Y4 + Y7.

[0068] The temperature control unit 13 supplies a portion of the heat transfer medium heated by the first device 21 to the third device 23, thereby supplying heat quantity X6 to the third device 23. The heat quantity Z1 on the input side of the third device 23 is equal to heat quantity X6. The heat transfer medium is heated by the third device 23, and heat quantity Z2 is output. The heat transfer medium with heat quantity Z2 is supplied to the first device 21 and the fourth device 24. That is, heat quantity Z2 is equal to heat quantity (Z4 + Z7).

[0069] The temperature control unit 13 supplies heat quantity X7 to the fourth device 24 using a portion of the heat transfer medium heated by the first device 21, and heat quantity Y7 to the second device 22 using a portion of the heat transfer medium heated by the second device 22. The heat quantity W1 on the input side of the fourth device 24 is equal to the heat quantity (X7 + Y7). The heat transfer medium is heated by this fourth device 24, and heat quantity W2 is output. The heat transfer medium having heat quantity W2 is supplied to the first device 21 and the second device 22. That is, heat quantity W2 is equal to heat quantity (W4 + W5).

[0070] Figure 14 illustrates the operation of Plant 2 during daytime hours. As shown in Figure 14, the temperature control unit 13 supplies the heat quantity Y4 of the heat transfer medium heated in the second device 22, the heat quantity Z4 of the heat transfer medium heated in the third device 23, and the heat quantity W4 of the heat transfer medium heated in the fourth device 24 to the first device 21. The first device 21 is supplied with a heat quantity X1 equivalent to (Y4 + Z4 + W4). The heat transfer medium is heated by this first device 21, and a heat quantity X2 is output. The heat transfer medium with a heat quantity X2 is supplied to the third device 23. In other words, the heat quantities X2 and X6 are equal.

[0071] The temperature control unit 13 supplies natural gas equivalent to the heat quantity Y0 to the second device 22, and supplies the heat quantity W5 of the heat transfer medium heated in the fourth device 24. In other words, the second device 22 is supplied with a heat quantity Y1 equivalent to the heat quantity (Y0 + W5). The heat transfer medium is heated by this second device 22, and a heat quantity Y2 is output. The heat transfer medium having a heat quantity Y2 is supplied to the first device 21 and the fourth device 24. That is, the heat quantity Y2 is equal to the heat quantity (Y4 + Y7).

[0072] The temperature control unit 13 supplies a portion of the heat transfer medium heated by the first device 21 to the third device 23, thereby supplying heat quantity X6 to the third device 23. The heat quantity Z1 on the input side of the third device 23 is equal to heat quantity X6. The heat transfer medium is heated by this third device 23, and heat quantity Z2 is output. The heat transfer medium having heat quantity Z2 is supplied to the first device 21. That is, heat quantity Z2 and heat quantity Z4 are equal.

[0073] The temperature control unit 13 supplies a portion of the heat transfer medium heated by the second device 22 to the fourth device 24, thereby supplying heat quantity Y7 to the fourth device 24. The heat quantity W1 on the input side of the fourth device 24 is equal to the heat quantity Y7. The heat transfer medium is heated by the fourth device 24, and heat quantity W2 is output. The heat transfer medium having heat quantity W2 is supplied to the first device 21 and the second device 22. That is, heat quantity W2 is equal to heat quantity (W4 + W5).

[0074] Figure 15 is a diagram illustrating the operation of the plant during a shutdown. As shown in Figure 15, the temperature control unit 13 supplies the heat quantity Z4 of a portion of the heat transfer medium heated in the third device 23 to the first device 21. The first device 21 is supplied with a heat quantity X1 equivalent to the heat quantity Z4. The heat transfer medium is heated by the first device 21, and a heat quantity X2 is output. The heat transfer medium with a heat quantity X2 is supplied to the third device 23. In other words, the heat quantities X2 and X6 are equal.

[0075] The temperature control unit 13 supplies the heat quantity Z5 of a portion of the heat transfer medium heated in the third device 23 to the second device 22. The second device 22 is supplied with a heat quantity Y1 equivalent to the heat quantity Z5. In other words, the heat quantity Z5 is equal to the heat quantity Y1. The heat transfer medium is heated by this second device 22, and a heat quantity Y2 is output. The heat transfer medium having a heat quantity Y2 is supplied to the third device 23. That is, the heat quantities Y2 and Y6 are equal.

[0076] The temperature control unit 13 supplies natural gas equivalent to the heat quantity Z0 to the third device 23, supplies heat quantity X6 from a portion of the heat transfer medium heated by the first device 21, and supplies heat quantity Y6 from a portion of the heat transfer medium heated by the second device 22. In other words, the total heat quantity (Z0 + X6 + Y6) is equal to the heat quantity Z1 input to the third device 23. The heat transfer medium is heated by this third device 23, and heat quantity Z2 is output. The heat transfer medium with heat quantity Z2 is supplied to the first device 21, the second device 22, and the fourth device 24, and the remaining heat quantity Z3 is dissipated. That is, heat quantity Z2 is equal to the total heat quantity (Z4 + Z5 + Z7 + Z3).

[0077] The temperature control unit 13 supplies a portion of the heat transfer medium heated by the third device 23 to the fourth device 24, thereby supplying heat quantity Z7 to the fourth device 24. The heat quantity W1 on the input side of the fourth device 24 is equal to the heat quantity Z7. The heat transfer medium is heated by this fourth device 24, and heat quantity W2 is output. The heat transfer medium having heat quantity W2 is supplied to the third device 23. That is, heat quantity W2 and heat quantity W6 are equal.

[0078] Figure 16 illustrates the operation of Plant 2 during shutdown after the first device 21 and the second device 22 have stopped. As shown in Figure 16, the temperature control unit 13 supplies natural gas equivalent to the heat quantity Z0 to the third device 23, and supplies heat quantity W6 from a portion of the heat transfer medium heated by the fourth device 24. In other words, the heat quantity (Z0 + W6) is equal to the heat quantity Z1 input to the third device 23. The heat transfer medium is heated by this third device 23, and heat quantity Z2 is output. The heat transfer medium with heat quantity Z2 is supplied to the fourth device 24, and the remaining heat quantity Z3 is dissipated. That is, heat quantity Z2 and heat quantity (Z7 + Z3) are equal.

[0079] The temperature control unit 13 supplies a portion of the heat transfer medium heated by the third device 23 to the fourth device 24, thereby supplying heat quantity Z7 to the fourth device 24. The heat quantity W1 on the input side of the fourth device 24 is equal to the heat quantity Z7. The heat transfer medium is heated by this fourth device 24, and heat quantity W2 is output. The heat transfer medium with heat quantity W2 is supplied to the third device 23, and the remaining heat quantity W3 is dissipated. That is, heat quantity W2 and heat quantity (W6 + W3) are equal.

[0080] Figure 17 shows a process layer for calculating the heat dissipation rate of the piping. As shown in Figure 17, the heat dissipation calculation unit 12 performs an input / output heat conversion process 41 using the input / output heat information 34. The heat dissipation calculation unit 12 performs a route determination process 42 using the piping information 33 and the result of the input / output heat conversion process 41. The heat dissipation calculation unit 12 performs a piping heat dissipation prediction process 43 using the natural environment information 31, equipment-specific information 32, and the result of the route determination process 42. The heat dissipation calculation unit 12 performs a model heat dissipation prediction process 45 using the result of the input / output heat conversion process 41 and the equipment-specific information 32.

[0081] The heat dissipation calculation unit 12 performs a heat input heat loss prediction process 44 using the results of the pipe heat dissipation prediction process 43. The heat dissipation calculation unit 12 performs a heat distribution determination process 46 using the results of the heat input heat loss prediction process 44. Furthermore, the heat dissipation calculation unit 12 performs an input / output heat map creation process 47 using the results of the pipe heat dissipation prediction process 43, equipment-specific information 32, and the results of the model heat dissipation prediction process 45.

[0082] Embodiment equipped with heat storage means The following describes an embodiment equipped with a heat storage means capable of storing the amount of heat supplied to an object. When supplying heat to an object, if there is a gap between the time the object stops and the time the object receiving this heat starts operating, the heat storage means is controlled to store heat.

[0083] By using a heat storage method, heat can be stored when there is excess heat to supply to the object, that is, when the object's heat demand is low. Then, the heat stored by the heat storage method can be supplied when the object's heat demand increases. In other words, when waste heat cannot be shared at the same time, the amount of heat that can be stored and released, and the optimal timing for storing and releasing heat can be calculated.

[0084] Figure 18 is a graph showing the heat storage and heat release operation pattern A for the heat storage means. The vertical axis of the graph shown in Fig. 18 represents the amount of heat of the heat storage means. The horizontal axis of the graph represents time. The solid line of the graph represents the amount of heat stored in the heat storage means. Heat quantity Q n is the amount of heat required when resuming the operation of the target object.

[0085] Period T I is the period during which the heat storage means is heated by the supply-side facility, and the slope of the heat storage amount at this time is ΔQ I . Period T O is the period during which heat is radiated from the heat storage means toward the target object, and the slope of the heat storage amount at this time is ΔQ O . In this operation pattern A, as shown in Equation (1), period T I and period T O do not overlap. [Formula]

[0086] Period T I and period T O By switching from heat storage to the heat storage means to heat radiation from the heat storage means in any of the hatched portions sandwiched between them, the amount of heat stored in the heat storage means can be utilized to the maximum. Here, the switching timing is time T e . Specifically, when the conditions of the above equations (1) and (2) are satisfied, it is preferable to switch between heat storage and heat radiation at time T that satisfies equation (3) e . [Formula]

[0087] [Formula]

[0088] By pre-testing the heat medium, temperature, and heat storage performance when storing and radiating heat to and from the target device, and providing the parameters to the temperature control unit 13, control can be performed to switch at the optimal heat storage and radiation timing.

[0089] Figure 19 is a graph showing the heat storage and heat release operation pattern B for the heat storage means. In this operation pattern B, the period T is as shown in equation (4). I and period T O This is redundant.

number

[0090] Specifically, when the conditions of equations (4) and (5) above are met, the time T that satisfies equation (6) is... e It is best to switch between heat storage and heat release.

number

[0091]

number

[0092] Therefore, according to this embodiment, it is possible to set the optimal heat exchange combination between each piece of equipment so that the amount of heat supplied to the equipment to be heated is maximized. Furthermore, by utilizing waste heat, carbon dioxide emissions can be suppressed. Furthermore, quantifying input and output allows for the handling of all energy sources. It also enables the definition of standard waste heat utilization methods that are independent of scale, time, region, and personnel. Moreover, it allows for the deriving of optimal solutions for large-scale, high-speed heat utilization pathways that exceed the comprehension limits and speeds of human calculations.

[0093] Although the present invention has been described above based on embodiments, the present invention is not limited to the configurations described in the above embodiments, and its configuration can be modified as appropriate without departing from the spirit of the invention, including by appropriately combining or selecting the configurations described in the embodiments.

[0094] For example, the above embodiment is not limited to providing heat to an object, but may also be applied to a system that provides cold to an object.

[0095] The configuration and effects of the present invention will be described below.

[0096] [1] A temperature control unit (13) supplies multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controls the target objects to reach their respective target temperatures. An optimization unit (11) optimizes the combination of the amount of the first heat transfer medium heat exchanged in each of the supply-side equipment and the objects so that the total amount of heat supplied to the multiple objects is maximized, A thermal fluid combination optimization device (1) characterized by comprising the following:

[0097] This allows for setting the optimal heat exchange combination between each piece of equipment so that the amount of heat supplied to the equipment to be heated is maximized.

[0098] [2] The temperature control unit (13) repeats the process of exchanging heat between a plurality of objects in descending order of the target temperature of each object, using a plurality of first heat transfer fluids that have exchanged heat with each of the supply-side equipment, by selecting the plurality of first heat transfer fluids that have exchanged heat with each of the supply-side equipment in ascending order of the temperature of each supply-side equipment. The heat transfer medium combination optimization apparatus (1) according to claim 1.

[0099] This allows for efficient reuse of waste heat with minimal computational effort.

[0100] [3] Each of the aforementioned objects is heated by a plurality of first heat transfer fluids that exchange heat with a plurality of supply-side equipment, and a plurality of second heat transfer fluids that exchange heat via a heat exchanger. The optimization unit (11) performs heat exchange on a predetermined amount of the first heat transfer medium with the second heat transfer medium of the same type, based on the physical property data of the first heat transfer medium and the physical property data of the second heat transfer medium, and then performs heat exchange on the remaining first heat transfer medium with a different type of second heat transfer medium. The heat transfer medium combination optimization apparatus (1) according to claim 1.

[0101] This allows for the efficient reuse of waste heat by combining similar heat transfer fluids.

[0102] [4] The system further includes a heat dissipation amount calculation unit (12) that calculates the amount of heat dissipated until the heat from each supply-side equipment is supplied to each of the target objects, according to the length of the piping through which the first heat transfer medium and / or the second heat transfer medium flows. The optimization unit (11) uses the amount of heat dissipated calculated by the heat dissipation calculation unit (12) to optimize the combination of the amount of the first heat transfer medium heat exchanged by each of the supply-side equipment and the target object. The heat transfer medium combination optimization apparatus (1) according to claim 3.

[0103] This allows for the optimization of the combination of the amount of the first heat transfer medium heat-exchanged by the supply-side equipment and the target object, taking into account heat dissipation from the piping.

[0104] [5] The optimization unit (11) changes the type and amount of the first heat transfer medium supplied to the object according to the environmental information in which the object is operated. The heat transfer medium combination optimization apparatus (1) according to claim 2.

[0105] This allows for the optimization of the combination of the amount of the first heat transfer medium, which is heat-exchanged by the supply equipment, and the target object, according to environmental information.

[0106] [6] The temperature control unit (13) switches the supply path of the first heat transfer medium when the optimization unit (11) changes the type and amount of the first heat transfer medium supplied to the object. The heat transfer medium combination optimization apparatus (1) according to claim 5.

[0107] This allows for the optimization of the combination of the amount of the first heat transfer medium, which is heat-exchanged by the supply equipment, and the target object, according to environmental information.

[0108] [7] The aforementioned environmental information includes any of the following: date and time information, weather information, atmospheric pressure information, and temperature and humidity information. The heat transfer medium combination optimization apparatus (1) according to claim 5.

[0109] This allows for the optimization of the combination of the amount of the first heat transfer medium heat-exchanged by the supply equipment and the target object in response to changes in any of the following: date and time information, weather information, atmospheric pressure information, and temperature and humidity information.

[0110] [8] The system includes a heat storage means capable of storing the heat amount of the first heat transfer medium, The aforementioned environmental information includes date and time information, The temperature control unit (13) causes the heat storage means to store heat when the object to be heated by the first heat transfer medium starts operating after a predetermined time has elapsed since the supply equipment for heating the first heat transfer medium was shut down. The heat transfer medium combination optimization apparatus (1) according to claim 7.

[0111] This makes it possible to utilize the waste heat even if there is a mismatch between the timing of heat generation and its utilization.

[0112] [9] If the heat storage means is unable to store the amount of heat required by the object between the shutdown time of the supply equipment and the start time of operation of the object, the temperature control unit (13) switches at some point between the shutdown time of the supply equipment and the start time of operation of the object from heat exchange of the heat storage means using the first heat transfer medium that has been exchanged with the supply equipment to heat exchange of the object using the heat transfer medium that has been exchanged with the heat storage means. The heat transfer medium combination optimization apparatus (1) according to claim 8.

[0113] This allows for the efficient utilization of waste heat even if there is a mismatch between the timing of heat generation and its utilization.

[0114]

[10] The optimization unit (11) optimizes the combination of the amount of the first heat transfer medium heat exchanged by each supply-side equipment and the target object so that the total amount of heat supplied to multiple target objects is maximized. The temperature control unit (13) supplies multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controls the target objects to reach their respective target temperatures. A method for optimizing the combination of heat transfer media, characterized by comprising the following features.

[0115] This allows for setting the optimal heat exchange combination between each piece of equipment so that the amount of heat supplied to the equipment to be heated is maximized.

[0116]

[11] On the computer, A procedure for optimizing the combination of the amount of the first heat transfer medium heat-exchanged by each supply-side equipment and the target objects so that the total amount of heat supplied to multiple objects is maximized. A procedure for supplying multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controlling the target objects to reach their respective target temperatures. A program to optimize the combination of heat transfer fluids for execution.

[0117] This allows for setting the optimal heat exchange combination between each piece of equipment so that the amount of heat supplied to the equipment to be heated is maximized. [Explanation of Symbols]

[0118] 1. Heat transfer medium combination optimization device 11 Optimization Unit 12 Heat radiation calculation section 13 Temperature Control Unit 14 Storage section 2 Plants 21 1st device 22 Second device 23 Third device 24 4th device 221 Valve 231 Valve 241 Valve 232 valves 242 valves 213 Valve 223 Valve 243 Valve 214 Valves 224 valves 234 valves Temperature Tb temperature Cb heat capacity Tc temperature Cc heat capacity 51 Heat 52 Heat 55 Heat demand 53 Demand heat amount Td target temperature 54 Demand heat amount Tf target temperature 521 Heat amount 522 Heat 523 Heat 524 Heat 513 Heat 514 Heat amount 516 Heat 515 Heat amount 525 Heat 526 Heat 528 Heat 527 Heat

Claims

1. A temperature control unit that supplies multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controls the target objects to reach their respective target temperatures, An optimization unit optimizes the combination of the amount of the first heat transfer medium heat-exchanged by each of the supply-side equipment and the objects so that the total amount of heat supplied to the plurality of objects is maximized. Equipped with, The temperature control unit selects a plurality of first heat transfer fluids that have exchanged heat with each of the supply-side equipment in ascending order of the temperature of each of the supply-side equipment, and repeatedly supplies the selected first heat transfer fluids to the target objects selected in descending order of the target temperature of each object, thereby exchanging heat with the target objects. A heat transfer medium combination optimization apparatus characterized by the following:

2. A temperature control unit that supplies multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controls the target objects to reach their respective target temperatures, An optimization unit optimizes the combination of the amount of the first heat transfer medium heat-exchanged by each of the supply-side equipment and the objects so that the total amount of heat supplied to the plurality of objects is maximized. Equipped with, Each of the aforementioned objects is heated by a plurality of first heat transfer fluids that exchange heat with a plurality of the supply-side equipment, and a plurality of second heat transfer fluids that exchange heat via a heat exchanger. The optimization unit, based on the physical property data of the first heat transfer medium and the physical property data of the second heat transfer medium, performs heat exchange on a predetermined amount of the first heat transfer medium with the same type of second heat transfer medium, and then performs heat exchange on the remaining first heat transfer medium with a different type of second heat transfer medium. A heat transfer medium combination optimization apparatus characterized by the following:

3. The system further includes a heat dissipation amount calculation unit that calculates the amount of heat dissipated until the heat from each of the supply-side equipment is supplied to each of the target objects, according to the length of the piping through which the first heat transfer medium and / or the second heat transfer medium flows. The optimization unit optimizes the combination of the amount of the first heat transfer medium heat-exchanged by each of the supply-side equipment and the target object using the amount of heat dissipated calculated by the heat dissipation calculation unit. The heat transfer medium combination optimization apparatus according to claim 2.

4. The optimization unit changes the type and amount of the first heat transfer medium supplied to the object according to the environmental information in which the object is operated. The heat transfer medium combination optimization apparatus according to claim 1.

5. The temperature control unit switches the supply path of the first heat transfer medium when the optimization unit changes the type and amount of the first heat transfer medium supplied to the object. The heat transfer medium combination optimization apparatus according to feature 4.

6. The aforementioned environmental information includes any of the following: date and time information, weather information, atmospheric pressure information, and temperature and humidity information. The heat transfer medium combination optimization apparatus according to feature 4.

7. The system is equipped with a heat storage means capable of storing the heat amount of the first heat transfer medium, The aforementioned environmental information includes date and time information, The temperature control unit causes the heat storage means to store heat when the object to be heated by the first heat transfer medium starts operating after a predetermined time has elapsed since the supply equipment for heating the first heat transfer medium was shut down. The heat transfer medium combination optimization apparatus according to claim 6.

8. If the heat storage means is unable to store the amount of heat required by the object between the shutdown time of the supply equipment and the start time of operation of the object, the temperature control unit switches at some point between the shutdown time of the supply equipment and the start time of operation of the object from heat exchange of the heat storage means using the first heat transfer medium that has been exchanged with the supply equipment to heat exchange of the object using the heat transfer medium that has been exchanged with the heat storage means. The heat transfer medium combination optimization apparatus according to claim 7.

9. The optimization unit performs the following steps: optimizes the combination of the amount of the first heat transfer medium heat-exchanged by each supply-side equipment and the target object so that the total amount of heat supplied to multiple target objects is maximized; The temperature control unit supplies multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controls the target objects to reach their respective target temperatures. The temperature control unit selects a plurality of first heat transfer fluids that have exchanged heat with each of the supply-side equipment in ascending order of the temperature of each of the supply-side equipment, and repeats the process of supplying the selected first heat transfer fluids to the target objects selected in descending order of the target temperature of each object to exchange heat with the object. A method for optimizing the combination of heat transfer media, characterized by comprising the following features.

10. The optimization unit performs the following steps: optimizes the combination of the amount of the first heat transfer medium heat-exchanged by each supply-side equipment and the target object so that the total amount of heat supplied to multiple target objects is maximized; The temperature control unit supplies multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controls the target objects to reach their respective target temperatures. Each of the aforementioned objects is heated by a plurality of first heat transfer fluids that exchange heat with a plurality of the supply-side equipment, and a plurality of second heat transfer fluids that exchange heat via a heat exchanger. The optimization unit performs the following steps based on the physical property data of the first heat transfer medium and the physical property data of the second heat transfer medium: first, a predetermined amount of the first heat transfer medium is heat-exchanged with the second heat transfer medium of the same type; and then the remaining first heat transfer medium is heat-exchanged with the second heat transfer medium of a different type. A method for optimizing the combination of heat transfer media, characterized by comprising the following features.

11. On the computer, A procedure for optimizing the combination of the amount of the first heat transfer medium heat-exchanged by each supply-side equipment and the target objects so that the total amount of heat supplied to multiple objects is maximized. A procedure for supplying multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controlling the target objects to reach their respective target temperatures. A procedure for repeatedly selecting a plurality of first heat transfer fluids that have exchanged heat with each of the supply-side equipment in ascending order of the temperature of each of the supply-side equipment, and supplying the selected first heat transfer fluids to objects selected in descending order of the target temperature of each object to exchange heat with the object. A program to optimize the combination of heat transfer fluids for execution.

12. On the computer, A procedure for optimizing the combination of the amount of the first heat transfer medium heat-exchanged by each supply-side equipment and the target objects so that the total amount of heat supplied to multiple objects is maximized. A procedure for supplying multiple first heat transfer fluids, each having exchanged heat with multiple supply-side equipment, to one of multiple target objects, and controlling the target objects to reach their respective target temperatures. Each of the aforementioned objects is heated by a plurality of first heat transfer fluids that exchange heat with a plurality of the supply-side equipment, and a plurality of second heat transfer fluids that exchange heat via a heat exchanger. A procedure in which, based on the physical property data of the first heat transfer medium and the physical property data of the second heat transfer medium, a predetermined amount of the first heat transfer medium is subjected to heat exchange with the second heat transfer medium of the same type, and then the remaining first heat transfer medium is subjected to heat exchange with a second heat transfer medium of a different type. A program to optimize the combination of heat transfer fluids for execution.

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