JP5696005B2 - Heat trading support device and heat trading support system - Google Patents

Description

  The present invention relates to a heat trading support device and a heat trading support system.

In various applications such as factory processes and air conditioning, exhaust heat to a heat medium and heat collection from the heat medium are performed. The temperature and amount of heat exhausted and collected are various, and recently, the idea of "heat interchange" that effectively uses heat by collecting the heat exhausted at one point at another point is proposed. It has been attracting attention (see, for example, Patent Document 1).
For example, Patent Document 1 discloses a technique that enables the effective use of heat at a plurality of points by forming an end loop so as to mutually complement heat generated in a region such as a factory or a region.
Such heat accommodation can be as large as a factory or as large as a city, and the scale varies.
Further, in recent years, heat interchange using sewage heat such as sewage treated water and sewage is expected in cities and the like (see, for example, Patent Document 2).

International Publication No. 2002/065034 JP 2008-241226 A

  In the future, if the above-mentioned heat interchange is introduced, the user will be charged according to the amount of usage in the same way as electricity and water, and the profit will be returned to the user who puts in heat to maintain the overall heat balance. Is expected.

  The present invention has been made in view of such circumstances, and in heat interchange, a heat trading support device capable of determining a heat usage unit price corresponding to a use state of exhaust heat and heat collection that change sequentially. And to provide a heat trading support system.

In order to solve the above problems, the present invention employs the following means.
The present invention is a heat medium system in which a plurality of bases that use heat are connected by a heat medium flow passage through which a heat medium circulates, and heat can be collected from the heat medium or exhausted to the heat medium at each of the bases. The heat trading support device applied to the receiving device, the receiving means for receiving information on the use of heat at each of the bases at a predetermined time interval from a communication device provided at each of the bases, received by the receiving means Using the information related to heat utilization at each site and the outside air conditions, heat rate calculation means for calculating the unit price of the heat medium at each site, and the unit price calculated by the heat rate calculation means are transmitted to the client terminal at each site There is provided a heat trading support device comprising a transmitting means.

  According to the present invention, the unit price of the heat medium at each site is calculated based on the heat utilization status and the outside air conditions transmitted from each site at predetermined time intervals. As a result, it is possible to calculate the unit price of the heat medium that takes into account the state of heat utilization at each site that changes sequentially and the outside air conditions.

  In the heat trading support device, the first storage means in which the basic frame visualizing the heat medium system is stored, and the information on the heat utilization of the base is displayed on the basic frame read out from the first storage means. And a display processing means for creating, for each base, display information indicating the unit price of the heat medium at each base in the heat medium system diagram. It is good also as transmitting display information to the said client terminal of each said corresponding base.

  According to such a configuration, it is possible to display on the client terminal a display screen in which the unit price of the heat medium at each base is added to the heat medium system diagram in which the state of heat utilization performed at each base is visualized. It becomes possible. This makes it possible to present not only the unit price of the heat medium but also the heat utilization status of the base and other bases in the surrounding area to the user.

  In the heat trading support device, the heat rate calculation means includes a calculation formula including a calculation element for calculating a relative value of heat that changes in accordance with heat use conditions at the plurality of bases that use heat. It is good also as calculating the unit price of the said heating medium using this calculation formula.

  According to such a configuration, the unit price of the heat medium at each base is relatively determined in accordance with the state of heat use at a plurality of bases where heat is used. Thereby, the unit price of the heat medium is determined in consideration of the heat utilization balance of the surrounding bases.

  The heat trading support apparatus includes a second storage unit that stores heat utilization scheduling information at the base, and the heat utilization scheduling information includes exhaust heat or a period for which heat utilization is desired and a utilization mode. Heat collection information is included, and the heat rate calculation means obtains the number of bases wishing to exhaust heat and the number of bases desired to collect heat from the information stored in the second storage means for the same time period. The base that desires the usage mode with the larger number of bases may be set as the charging target, and the base that desires the usage mode with the smaller number of bases may be set as the purchase target.

  According to such a configuration, the heat utilization scheduling information at the base is stored in the second storage means. The heat utilization scheduling information includes information on exhaust heat or heat collection as a period and a utilization mode in which heat utilization is desired. The calorie calculation means obtains the number of bases wishing to exhaust heat and the number of bases desired to collect heat for the same time period from the heat utilization scheduling information stored in the second storage means. A base that desires a usage mode with a larger number of bases is set as a billing target, and a base that desires a usage mode with a smaller number of bases is set as a purchase target.

  In the heat trading support device, the calculation formula is such that the larger the absolute value of the difference between the temperature of the heat medium flowing into the base and the temperature of the heat medium discharged from the base, the higher the unit price of the heat medium. The unit price of the heat medium may be calculated using the same calculation formula for both the charge target and the purchase target.

  According to such a configuration, the unit price of the heat medium increases as the absolute value of the difference between the temperature of the heat medium flowing into the base and the temperature of the heat medium discharged from the base increases. In addition, the unit price of the heat medium is calculated using the same calculation formula for both the charging target and the purchase target. Therefore, for example, when the exhaust heat is an object to be charged and the heat collection is an object to be purchased, the unit price of the heat medium to be charged becomes higher as the temperature of the exhausted heat medium becomes higher than the temperature of the inflowed heat medium. The lower the temperature of the exhausted heat medium with respect to the temperature of the heat medium that has flowed in, the higher the unit price of the purchased heat medium.

  In the heat trading support device, the heat utilization scheduling information includes a desired heat utilization unit price desired by the site, and the unit price of the heat medium at the site calculated by the heat rate calculation unit and the first 2 Compared with the desired heat usage unit price of the base stored in the storage means, and when the unit price of the heat medium is equal to or less than the desired heat usage unit price, heat accommodation establishment determination means for judging that heat accommodation is established It is good also as providing.

  According to such a configuration, the heat utilization schedule information stored in the second storage means includes the desired heat utilization unit price desired by the base. The unit for determining the establishment of heat interchange compares the unit price of the heat medium at the base calculated by the heat rate calculation unit with the corresponding desired heat use unit price included in the heat use schedule information of the base, and the unit price of the heat medium is determined. If it is less than the desired heat utilization unit price, it is determined that heat accommodation is established.

  In the heat trading support device, the heat utilization scheduling information includes a desired heat purchase unit price desired by the base, and the unit price of the heat medium at the base calculated by the heat rate calculation unit and the first 2 Compared with the desired heat purchase unit price of the base stored in the storage means, and when the unit price of the heat medium is equal to or higher than the desired heat purchase unit price, a heat interchange establishment determination unit that determines that heat accommodation is established It is good also as providing.

  According to such a configuration, the heat utilization schedule information stored in the second storage means includes the desired heat purchase unit price desired by the base. The unit for determining the establishment of heat interchange compares the unit price of the heat medium at the base calculated by the heat rate calculation unit with the corresponding desired heat purchase unit price included in the heat utilization schedule information of the base, and determines the unit price of the heat medium. If it is equal to or higher than the desired heat purchase unit price, it is determined that heat interchange is established.

  In the heat trading support device, the heat charge calculating means calculates a heat medium use charge by multiplying the calculated unit price of the heat medium by the heat medium use amount at each base, and the transmitting means The heat medium usage fee may be transmitted to the client terminal.

  According to such a configuration, it is possible to present to the user of the client terminal a heat medium usage fee that reflects the unit price of the heat medium evaluated from the utilization status of exhaust heat and heat collection at each site.

  The present invention provides any one of the above heat trading support devices and a plurality of communication devices that are provided at each of the plurality of bases and transmit information on heat use at the bases to the heat trading support devices, and the heat A thermal trading support system comprising a client terminal connected to a trading support apparatus via a communication network and provided with a display means capable of displaying information received from the thermal trading support apparatus.

  According to the present invention, in heat accommodation, there is an effect that it is possible to determine a heat use unit price corresponding to the use state of exhaust heat and heat collection that change sequentially.

It is the figure which showed heat accommodation notionally. It is a figure for demonstrating the concept of the potential of a heat medium. It is a figure for demonstrating the calculation method of the potential temperature and potential calorie | heat amount in a base. It is the block diagram which showed the whole schematic structure of the heat trading support system which concerns on one Embodiment of this invention. It is the functional block diagram which expanded and showed the function with which the heat trading support device concerning one embodiment of the present invention is provided. It is the functional block diagram which expanded and showed the function with which the process part shown in FIG. 5 is provided. It is the figure which showed an example of the 1st display information produced by a display process part. It is the figure which showed an example of the 2nd display information produced by a display process part. It is the figure which showed an example of the system system diagram displayed on the display apparatus of a client terminal. It is the figure which showed the example of a display of the graph which shows the system performance which made the turbo refrigerator object. It is the figure which showed the example of a display shown by comparing the potential calorie | heat amount. It is the figure which showed the example of a display which showed the comparative example of the heat supply unit price set by the external heat supply company, and an unused heat unit price. It is the figure which showed the example of a display which showed the comparative example of the amount-of-production heat value and the amount of heat which can be manufactured.

Hereinafter, an embodiment of a heat trading support device and a heat trading support system according to the present invention will be described with reference to the drawings.
FIG. 1 is a diagram conceptually showing the value of heat due to heat accommodation and heat demand in heat accommodation. As shown in FIG. 1, a plurality of bases 30 where heat is transferred are scattered, and the bases 30 are connected by a heat medium flow passage 40 through which the heat medium flows. The base 30 is a place where a heat source machine such as a heat pump or a refrigerator is installed, and is a place where heat is transferred. In FIG. 1, a base 30 with an arrow drawn toward the heat medium flow passage 40 is a base where heat is exhausted, and a base with an arrow drawn from the heat medium flow passage 40 toward the base 30. Reference numeral 30 is a base where heat is collected.

As shown in FIG. 1, the heat medium warmed by exhausting heat at one base 30 is used as a heat source at another base 30, so that heat is reused and heat is collected at one base 30. It can be seen that heat is reused by using the heat medium cooled by the above as a cooling source at the other base 30. Energy efficiency is enhanced by such heat accommodation. Further, in FIG. 1, the heat medium flow passage 40 is represented as a closed loop, and it can be seen that the heat medium circulates while heat is used.
An example of the heat accommodation is supply of sewer heat. In such a case, heat accommodation is operated by, for example, a sewerage station in a city or the like.

  The heat trading support device according to the present embodiment determines the unit price of the heat medium according to the state of heat utilization at each base 30 connected to the heat medium flow passage 40 as described above, and each of the units based on the determined unit price. This device supports billing according to the amount of heat used at the site.

In the present embodiment, for example, the unit price of the heat medium is determined based on the potential of the heat medium described below.
FIG. 2 is a diagram for explaining the concept of the potential of the heat medium flowing through the heat medium flow passage 40. As shown in FIG. 2, when considering a minimum section of the heat medium flow passage 40 through which the heat medium flows, the heat medium entering and exiting this minimum section has a state quantity as shown in Table 1 below.

  What is calculated from the inlet state quantity of the minimum section is the potential of the heat medium, and if heat input from the outside or heat radiation to the outside is performed by the section outlet, the potential of the heat medium at the inlet of the next section is Change. In addition to the case where a new heat medium directly flows in, heat input and heat dissipation from the outside are performed by heat transfer due to a temperature difference between the pipe line through which the heat medium moves and the outside.

  For example, the potential calorie, which is the potential related to the calorie of the heat medium, is expressed by the following equation (1) using the state quantity at the inlet. Here, the use of a heat medium in heat accommodation includes heat collection and heat dissipation, but in this embodiment, a reference temperature is provided, and the value of heat with respect to this reference temperature is quantified, regardless of the use mode. In addition, it is possible to evaluate the value of the heat medium according to a unified standard. The reference temperature can be arbitrarily set, but in this embodiment, it is set to 0 ° C. as an example. Further, the reference temperature may not always be constant, and for example, a value that changes like the outside air temperature may be used.

Q ₁ = v ₁ × A ₁ × ρ ₁ × C ₁ × (T ₁ −T _S ) (1)

In Equation (1), Q ₁ is the amount of heat (kW) at the minimum section inlet, v ₁ is the average flow velocity (m / s) at the minimum section inlet, A ₁ is the pipe cross-sectional area (m ² ) at the minimum section inlet, ρ ₁ Is the density at the minimum zone inlet (kg / m ³ ), C ₁ is the specific heat (kJ / kg · K), T ₁ is the temperature at the minimum zone inlet (° C.), and T _S is the reference temperature (° C.), ie 0 ° C. It is.

The heat input and heat dissipation are expressed by the following equation (2) when flowing directly, and the heat conduction through the pipeline is expressed by equation (3).
For heat conduction, the product of the average outer peripheral length and section length of the entrance / exit is the heat transfer area, and heat transfer is the difference between the average temperature of the entrance / exit and the external temperature.

_{q = v G × A G ×} ρ G × C G × (T G -T S) (2)
q = (L _r1 + L _r2 ) / 2 × L × {(T ₁ −T ₂ ) / 2−T _G } × λ (3)

In the formula (2), v _G , A _G , ρ _G , C _G , and T _G are the average flow velocity (m / s), pipe cross-sectional area (m ² ), density (kg / m ³ ), and specific heat, respectively. (KJ / kg · K) and temperature (° C.). In Equation (3), L _r1 is the outer peripheral length (m) at the minimum section entrance, L _r2 is the outer peripheral length (m) at the minimum section exit, L is the minimum section length (m), and T ₁ is the minimum section entrance. temperature (℃) in, _{T 2} is the temperature at the minimum section outlet (℃), lambda is the thermal conductivity (kW / m · K).

  From the above, the potential heat quantity at the minimum unit outlet is expressed by the following equation (4).

Q ₂ = Q ₁ + q (4)

  And if this minimum section is connected continuously, the potential of the heat medium at each point in a certain region can be calculated.

  As shown in Table 1 above, the potential of the heat medium can be calculated for each state quantity of the heat medium. In particular, in heat accommodation, the potential heat quantity related to the heat quantity is the potential heat quantity and the heat medium related to the temperature. The potential temperature which is the potential of is an important item. Hereinafter, an example of a method for calculating the potential temperature and the amount of potential heat at the site 30 shown in FIG. 1 will be specifically described with reference to FIG.

  Consider two adjacent bases A and B as shown in FIG. Here, the base A is located on the upstream side of the base B. At this time, the current potential temperature at the base B is obtained by the following equation (5).

T _B = T _Bin −T _s (5)

(5) In the formula, the potential temperature _{T B} is based B (° _{C.), T Bin} is heat medium inlet temperature of the site B (° C.), _{T s} is the standard temperature (° C.), i.e., a 0 ° C..

  Further, the potential heat quantity at the site B is obtained by the following equation (6).

Q _PB = T _B × F _AB × C × γ / 3600 (6)

(6) In the _{formula, Q PB} is Point B is available heating medium potential heat (kW), _{T B} is the current potential temperature locations B (° _{C.), F AB} is between site A and site B Heat medium flow rate (m ³ / h), C is specific heat (kJ / kg · K), and γ is specific gravity (kg / m ³ ).
Here, as the heat medium flow rate F _AB between the base A and the base B, a flow sensor may be provided in the heat medium flow passage 40 and a value measured by the flow sensor may be used. It is good also as estimating by arithmetic processing using the arithmetic formula shown to the following (7) Formula, without providing a flow sensor in the path | route 40. FIG.

F _AB = Q _A / {(T _AOUT −T _AIN ) × C × γ / 3600 (7)

In Formula (7), Q _A is the amount of heat exhausted or collected (kW) at site A, T _AOUT is the heat medium outlet temperature (° C.) at site A, and T _AIN is the heat medium inlet temperature (° C.) at site A. .

  As described above, in calculating the potential heat quantity at each site in the heat medium flow passage 40, information on the use of the heat medium at the site adjacent to the site and located upstream may be used. In addition, since the base is located downstream of the junction where the plurality of heat medium flow passages 40 join, when there are a plurality of adjacent upstream bases, information on the use of the heat medium at the plurality of bases May be used. Furthermore, when there is heat input from the outside or heat radiation to the outside, the potential heat quantity may be calculated in consideration of them.

  As described above, in calculating the potential heat quantity at each base, the potential heat quantity is calculated without using a complicated arithmetic expression by using information on the use of the heat medium at the adjacent base and the heat medium inlet temperature at the base. It becomes possible to do.

  In heat interchange to which the heat trading support device according to the present embodiment is applied, both exhaust heat and heat collection are performed as described above. During periods where exhaust heat is active as in the summer, heat collection bases that function in the direction of lowering the temperature of the heat medium are highly valuable, and heat extraction is likely to be active as in the winter. In such a period, the base that performs exhaust heat functioning to increase the temperature of the heat medium is valuable. Therefore, in consideration of such a balance between supply and demand for heat collection and exhaust heat, the heat trading support device and the heat trading support system according to the present embodiment are based on the balance of heat supply and demand for a base that is determined to have high value. Adopts a fee structure that pays a fee, that is, purchases heat, instead of charging. In other words, a mechanism is adopted in which, among heat collection and exhaust heat, the one with higher client demand is treated as a charge, and the heat is purchased from the one with less client demand. Further, when determining the unit price of heat, the above-described potential of the heat medium is used.

FIG. 4 is a block diagram showing the overall configuration of the heat trading support system according to the present embodiment. The heat trading support system includes a heat trading support device 1, a communication device 2 installed at each base 30, and a client terminal 3.
The heat trading support device 1 and a plurality of communication devices 2 installed at each base 30 are connected via a predetermined communication network 6. The communication network 6 is not particularly limited. The heat trading support device 1 and the client terminal 3 are connected by a predetermined communication network 7, for example, the Internet. Note that the communication network 6 and the communication network 7 may be the same or separate networks.

  The communication device 2 installed at each site 30 transmits information related to heat use by the heat source device installed at the site 30 to the heat trading support device 1 at predetermined time intervals. As information regarding heat utilization, for example, the temperature before and after the exhaust heat and the amount of exhaust heat, or the temperature and the amount of heat collected before and after the heat collection are listed as examples.

The amount of exhaust heat is obtained by the following equation (8), for example.
Q = (Tout−Tin) × F × C × γ / 3600 (8)
In equation (1), Q is the amount of exhaust heat (kW), Tin is the cooling water inlet temperature (° C.) of the heat source unit, Tout is the cooling water outlet temperature (° C.) of the heat source unit, and F is the cooling water flow rate (m ³ / h), C is specific heat (kJ / kg · K), and γ is specific gravity (kg / m ³ ).

The amount of heat collected is determined by the following equation (9).
Q = (Tin−Tout) × F × C × γ / 3600 (9)
In Equation (9), Q is the amount of heat collected (kW), Tin is the heat source water inlet temperature (° C.) of the heat source machine, Tout is the heat source water outlet temperature (° C.) of the heat source machine, and F is the heat source water flow rate (m ³ / h), C is specific heat (kJ / kg · K), and γ is specific gravity (kg / m ³ ).

The calculation of the amount of exhaust heat or the amount of heat collected is performed by, for example, a control board provided in the heat source device, and the calculation result is output to the communication device 2.
The communication device 2 transmits information about heat utilization notified from each heat source machine to the heat trading support device 1 via the communication network 6 at predetermined time intervals. For a base where a plurality of heat source machines are provided, for example, the average temperature and the total amount of heat in each heat source machine are transmitted to the heat trading support device 1.

The heat trading support device 1 calculates the potential heat quantity and the potential temperature for each base based on the information on the use of the heat medium received from the communication device 2 installed at each base 30, and calculates the calculated potential heat quantity and potential temperature. The unit has a function of calculating an unused heat unit price (unit price of the heat medium) and determining whether or not heat accommodation is established at each site based on the unit price. Furthermore, the heat trading support device 1 has a function of creating a heat medium system diagram that visualizes the state of heat use at each site 30. The heat trading support device 1 provides each base 30 with information such as the potential heat amount calculated for each base, information on the unused heat unit price, information about whether heat accommodation is possible, and display information created for each base.
For example, the heat trading support device 1 includes a WEB server 4, and the WEB server 4 provides information to the client terminals 3 at each site using the Internet as a communication medium.

  The client terminal 3 is a computer equipped with a WEB browser, and has a function of acquiring data from the heat trading support device 1 and displaying it on the display device 5. That is, when the client terminal 3 accesses a predetermined URL of the WEB server 4, the display device 5 displays the potential heat quantity and potential temperature at the base 30, the heat medium system diagram to which the unused heat unit price is added, and the like. It becomes possible.

  In addition, the client terminal 3 is installed in, for example, each base 30 or a management facility that manages and controls heat use at each base 30. Therefore, the user of each base 30 displays the current heat medium potential, the unused heat unit price, the heat medium system diagram, and the like on the display device 5, so that the information in the base considering the information comprehensively is displayed. It is possible to adjust heat utilization and schedule future heat utilization.

  5 and 6 are functional block diagrams showing the functions provided in the heat trading support device 1 in an expanded manner. As illustrated in FIG. 5, the heat trading support device 1 includes a first storage unit 11, a first communication unit (reception unit) 12, a processing unit 13, a second storage unit 14, and a second communication unit (transmission). Means) 15.

  The first storage unit 11 shows a heat medium system including a plurality of bases 30 that exist in the area in charge of the heat trading support device 1 and that exchanges heat, and a heat medium flow passage 40 that connects the bases. Basic frames are stored. In the present embodiment, one area of the city is assumed as the predetermined charge area, and heat interchange is assumed when a sewage network is used as the heat transfer passage 40.

  The second storage unit 14 stores various conditions related to heat use registered by each base 30. Specifically, in the second storage unit 14, information on heat collection or exhaust heat, requirements for required potential heat amount and required potential temperature when performing heat use, and heat use usage time are associated with each other. 1 information is stored. Further, the second storage unit 14 stores second information in which a desired heat use unit price and a use time when heat is used are associated with each other.

  The conditions for the required potential calorie and the required potential temperature can be set within a certain range, for example. The utilization time of heat utilization, required heat quantity, required potential temperature, and desired heat utilization unit price can be set and updated from the client terminal 3 in a preset minimum time unit. For example, the WEB server 4 of the heat trading support device 1 displays the heat interchange usage site for the base side to set necessary information, such as the first information and the second information, on the display device 5 of the client terminal 3, and this The above information etc. can be registered / changed from the site side through the heat interchange use site. The information input on the site side is stored in the second storage unit 15 in association with the identification information of the site, for example.

  The first communication unit 12 is a communication interface with the communication device 2, and the second communication unit 15 is a communication interface with the client terminal 3. If the communication network 6 and the communication network 7 are the same, the first communication unit 12 and the second communication unit 15 may be shared.

  As illustrated in FIG. 6, the processing unit 13 includes a potential calculation unit 13 a, a heat charge calculation unit (heat charge calculation unit) 13 b, a heat interchange establishment determination unit (heat interchange establishment determination unit) 13 c, and a display processing unit (display process). Means) 13d.

The potential calculation unit 13a uses the heat collection amount of each site 30 received by the first communication unit 12 and the temperature before and after the heat collection, or the amount of exhaust heat and the temperature before and after the exhaust heat. The potential, specifically, the potential temperature and the potential heat amount are calculated, and the calculation results are output to the heat charge calculation unit 13b, the heat interchange establishment determination unit 13c, and the display processing unit 13d.
Specifically, the potential calculation unit 13a has the above-described arithmetic expressions (5) to (7), and calculates the potential temperature and the potential heat amount at each base 30. The calculation method is as described above.

  The heat rate calculation unit 13b is based on the amount of exhaust heat or the amount of heat collected and the heat medium temperature of each base 30 received by the first communication unit 12, the potential temperature and the potential heat amount calculated by the potential calculation unit 13a, the external temperature, and the like. Thus, the unused heat unit price at each base 30 is calculated. Here, the unused heat means the heat of the heat medium flowing through the heat medium flow passage 40, and the unused heat unit price means the unit price of unused heat.

The unused heat unit price will be described below.
The unused heat unit price is calculated in consideration of two factors, for example, the absolute value of heat and the relative value of heat.

  The unused heat unit price is expressed as a value obtained by multiplying the absolute value of the unused heat and the relative value, as in the following equation (10).

  Cf = Cfa × Cfr (10)

  In the equation (10), Cf is a unit price of unused heat, Cfa is an absolute value of unused heat, and Cfr is a relative value of unused heat.

  The absolute value Cfa of unused heat is expressed by the following equation (11), for example.

  Cfa = f (To, Tu) (11)

  In the above equation (11), To is the outside air temperature (° C.), and Tu is the exhaust heat or heat collection temperature (° C.). Further, a potential temperature based on the outside air temperature may be used in place of the above To and Tu.

  The relative value Cfr of unused heat is determined from the supply and demand balance of exhaust heat and heat collection, and is expressed by the following equation (12), for example.

  Cfr = f (Q ′) (12)

In the equation (12), Cfr is a relative value of unused heat, and Q ′ is a surrounding utilization balance (kW).
In the present embodiment, the unit price of heat at the base that contributes to the supply and demand balance of heat accommodation is set high. For example, the greater the absolute value of the difference between the temperature of heat collection and exhaust heat and the temperature potential of the heat medium flowing into the site, the greater the effect on the surrounding sites. Therefore, the relative value of unused heat may be set higher as the influence on surrounding bases is larger. In this case, the above expression (12) can be expressed as the following expression (13).

  Cfr = f (| Tu−Tp |, | Qu / Qp |) (13)

  In the equation (13), Cfr is the relative value of unused heat, Tp is the potential temperature of the heat medium flowing into the base, Tu is the potential temperature of the heat medium discharged from the base, and Qu is the amount of exhaust heat or sampling at the base. The amount of heat (kW) and Qp are the potential amount of heat (kW) of the heat medium flowing into the base.

  The above-described method for calculating the absolute value Cfa of the unused heat and the relative value Cfr is an example. For example, how much the absolute value Cfa of the unused heat is set, The amount of the relative value at each base is set to be determined by the person who operates the heat interchange arbitrarily from the relationship between exhaust heat and heat collection in the area in charge of the heat trading support device 1 It is possible to use a specific mathematical formula in accordance with the operation.

The heat rate calculation unit 13b holds an arithmetic expression for calculating the above-described unit price of unused heat in advance, and first, the amount of exhaust heat or heat collected from each base 30 received by the first communication unit 12 and the heat medium. Based on the temperature, the potential temperature and the amount of potential heat calculated by the potential calculation unit 13a, the external air temperature received from an external server, etc., the unused heat unit price at each base 30 is calculated.
Subsequently, the heat rate calculation unit 13b acquires the number of exhaust heat bases and the number of heat collection bases at the next time from the second storage unit 14, and sets the larger one as a charging target and the smaller one as a purchase target. Here, the next time means the time after the minimum time unit from the present time. Then, information associated with the calculated unused heat unit price and billing or purchase information is associated with the identification information assigned to each base and output to the heat interchange establishment determination unit 13c and the display control unit 13d.

  The heat interchange establishment determination unit 13c compares the current potential temperature calculated by the potential calculation unit 13a with the condition of the required potential temperature at the next time stored in the second storage unit 14 for each base, It is determined whether or not the potential temperature satisfies the required potential temperature condition.

  Furthermore, the heat interchange establishment determination unit 13c compares the potential heat amount calculated by the potential calculation unit 13a with the condition of the required potential heat amount at the next time stored in the second storage unit 14 for each base, It is determined whether or not the potential heat quantity satisfies the condition of the required potential heat quantity.

If any of the above conditions is not satisfied as a result of the determination, it is determined that the heat interchange is not established. On the other hand, if both conditions are satisfied, that is, if the current potential temperature satisfies the required potential temperature condition and the current potential heat quantity satisfies the required potential heat quantity condition, then The desired heat usage unit price at the next time is compared with the unused heat unit price calculated by the heat unit price calculation unit 13b, and the success or failure of the heat interchange is determined. That is, for the base to be charged, if the unused heat unit price is lower than the desired heat unit price, it is determined that heat accommodation is established. In addition, as for the bases to be purchased, each base was thinking of charging, but it was judged that it was purchased from the surrounding heat utilization balance, and it turned to the side where the fee was paid, so there was a loss of the base If not, it is automatically determined that the heat interchange has been established.
The heat interchange establishment determination unit 13 c stores the determination result in the second storage unit 14 in association with the identification information of the base 30.

  The display processing unit 13d has a function of creating first display information that visualizes information on the potential heat quantity of each site 30 calculated by the potential calculation unit 13a, and information on the use of the heat medium at each site. 2 Has a function of creating display information.

  Specifically, the display processing unit 13d displays the “current potential heat amount distribution” in which the current potential heat amount at each site 30 calculated by the potential calculation unit 13a is stored, and the next stored in the second storage unit 14. Created as the first display information "Potential calorie distribution at the next time" showing the required potential calorie at each time point and "Heat interchange establishment distribution" by adding the current potential calorie distribution and the potential calorie distribution at the next time To do.

  FIG. 7 is a diagram illustrating an example of the first display information. In FIG. 7, the upper part is the current potential heat quantity distribution, and the latest potential heat quantity calculated by the potential calculation unit 13 a is associated with each site. In FIG. 7, the potential heat quantity is represented by the height of a mountain, and the potential heat quantity is higher as the mountain is higher. The middle row shows the “required potential calorie distribution”, where heat collection is indicated by valleys and exhaust heat is indicated by peaks.

  The lower row is a “thermal accommodation establishment distribution”, which is a distribution obtained by adding the “current potential heat distribution” and the “required potential heat distribution at the next time”. In this distribution, for sites where the current potential calorie satisfies the required potential calorie requirement, the potential calorie is represented by a mountain, and for sites where the current potential calorie does not meet the required potential calorie requirement, The amount of heat is represented by a valley. The created first display information is stored in the second storage unit 14 in association with a predetermined URL.

  Further, the display processing unit 13d reads out the basic frame of the heat medium system from the first storage unit 11, and sends the base 30 of each base 30 received by the first communication unit 12 to each base 30 indicated on the read basic frame. A heat medium system diagram is created by displaying the amount of exhaust heat or the amount of heat collected and the heat medium temperature in association with each other. Further, the display processing unit 13d creates second display information by adding the unused heat unit price and billing or purchase information at each base inputted from the heat rate calculation unit 13b to the created heat medium system diagram. .

  FIG. 8 is a diagram showing an example of the second display information at a certain base. In the second display information, the heat collection amount or the exhaust heat amount is displayed as a numerical value at each base 30. Whether heat collection or exhaust heat is indicated by the direction of the arrow, where the arrow is displayed toward the base 30, the heat is collected, and the arrow is displayed from the base 30 toward the heat medium system. Is exhausting heat. Moreover, the thickness of the arrow is changed according to the heat collection amount or the exhaust heat amount. Further, the temperature of the heat medium flowing through the heat medium system is represented by a color. In FIG. 8, the temperature is divided into a plurality of temperature zones, and different colors are assigned to the respective temperature zones. The heat medium temperature is determined based on the temperature flowing into each site 30 and the temperature discharged. Furthermore, the unused heat unit price and billing or purchase information at the base are displayed at the upper left of the heat medium system diagram. The created second display information is stored in the second storage unit 14 in association with the URL assigned to each site 30.

  Then, when the client terminal 3 accesses the URL on the WEB, the first display information and the second display information stored in the second storage unit 14 are transmitted to the client terminal 3 by the second communication unit 15. . At this time, the information on whether or not the heat interchange is determined by the heat interchange establishment determining unit 13c is also added to the second display information and transmitted to the client terminal 3. As a result, the display device 5 of the client terminal 3 displays the first display information, the second display information, and the determination result as to whether or not heat accommodation is possible as shown in FIGS. 7 and 8.

Next, operation | movement of a heat accommodation support system provided with the said structure is demonstrated.
First, in performing heat utilization, a user at each site who desires heat utilization operates the client terminal 3 to display a heat interchange utilization site on the display device 5, and exhausts or collects heat from this site. Input information such as required potential temperature, required potential calorific value, usage time, desired heat usage unit price, and send operation. Thereby, the information regarding the various heat utilization conditions input is transmitted to the heat trading support device 1 and stored in the second storage unit 14 in association with the identification information of each base.

  Further, the heat collection amount of the heat source device at each base 30 and the heat medium temperature before or after the heat collection or the exhaust heat amount and the heat medium temperature before and after the heat collection are acquired and calculated in the control board of each heat source device, and these information is obtained from the communication device 2. Sent to. The communication device 2 transmits the input information to the heat trading support device 1 in association with the identification information of the base 30.

  In the heat trading support device 1, the identification information of the base 30 transmitted from the communication device 2 by the first communication unit 12, the heat collection amount of the heat source machine at this base 30, the heat medium temperature before or after the heat collection, the exhaust heat amount, and the exhaust heat The front and rear heat medium temperatures are received, and this information is output to the potential calculation unit 13a, the heat rate calculation unit 13b, and the display processing unit 13d.

  The potential calculation unit 13a calculates the current potential temperature and potential heat quantity at each site 30 using the above-described equations (5) to (7) based on information received from the communication device 2 at each site 30. The calculation result is output to the heat unit price calculation unit 13b, the heat interchange establishment determination unit 13c, and the display processing unit 13d.

  The heat rate calculation unit 13b calculates based on the information received from each base 30, the potential temperature and potential calorie calculated by the potential calculation unit 13a, the outside air temperature received from an external predetermined server, and the like. An unused heat unit price is calculated for each base using an expression (for example, the above-described expressions (10) to (13)), and information indicating whether to charge or purchase is added to the calculated unused heat unit price. It outputs to the accommodation establishment determination part 13c and the display process part 13d.

  When the potential temperature and the amount of potential heat are input from the potential calculation unit 13a, the heat accommodation establishment determination unit 13c receives the required potential temperature, the required potential heat amount, and the desired heat at the next time stored in the second storage unit 14. Read the usage unit price. Then, based on these pieces of information, it is determined whether or not heat accommodation is possible, and the determination result is stored in the second storage unit 14 in association with the identification information of each base 30.

When the potential calorific value of each base 30 is input from the potential calculating unit 13a, the display processing unit 13d reads out information on the required potential calorific value at the next time stored in the second storage unit 14, and based on the information. First display information is created and stored in the second storage unit 14 in association with a predetermined URL.
In addition, when the unused heat unit price and billing or purchase information of each base 30 is input from the heat rate calculation unit 13b, the display processing unit 13d receives the basic frame of the heat medium system stored in the first storage unit 11. The heat medium system diagram is created by reflecting the amount of heat exhausted or collected from each base 30 input from the first communication unit 12 at the location of each base 30 displayed on the basic frame, Second display information is created for each site by adding the unused heat unit price and billing or purchase information of each site 30 input from the heat rate calculation unit 13b to this heat medium system diagram. And stored in the second storage unit 14.

In the second storage unit 14, when the second display information is already stored in association with the URLs of the respective bases 30, the display processing unit 13 d displays the heat medium stored in the second storage unit 14. A process of updating the information on the heat use of each site 30 in the system diagram, the unused heat unit price, and information on charging or purchase may be performed.
And the first display information and the second display information reflecting the latest heat utilization information at each base 30 are created by performing the above-described processing at each base 30 at a predetermined time interval, 2 is stored in the storage unit 14.

  Then, by accessing the URL on the WEB server assigned to itself from the client terminal 3, the latest first display information and second display information at the base stored in the second storage unit 14 are second. The data is transmitted to the client terminal 3 via the communication unit 15 and displayed on the display device 5 of the client terminal 3.

In addition, at this time, the base where the heat accommodation is not established may be notified of the reason why the heat accommodation was not established, and in that case, it may be inquired whether or not the start of the heat accommodation is desired.
For example, if it is determined that the heat interchange has not been established because the unused heat unit price exceeds the desired heat unit price, both the unused heat unit price and the desired heat unit price are presented. The fact that the heat interchange has not started because the unit price of heat usage did not match the user's wish is presented. Further, the user is inquired whether or not heat utilization is started at the current unused heat unit price. As a result, when information indicating that the user desires heat accommodation at the current unused heat unit price is input from the client terminal 3 and the information is transmitted to the heat trading support device 1, the heat trading support device 1 Determines that heat accommodation has been established.

As described above, the heat trading support device 1 and the heat trading support system according to the present embodiment have the following effects.
Since the unit price of unused heat is calculated from the viewpoint of both absolute value and relative value, it is possible to present to each base an unused heat unit price that takes into account the supply and demand balance of heat collection and exhaust heat, external temperature, etc. It becomes possible.

  Since the unit price of unused heat at each site is determined using the potential of the heat medium, which is a parameter obtained by quantifying the value of the heat medium when a predetermined temperature is used as a reference, heat is collected from the heat medium and converted to the heat medium. In the heat interchange in which both usage modes of exhaust heat exist, it is possible to calculate the unit price of unused heat at each base regardless of these usage modes.

  A display screen is displayed on the display device 5 of the client terminal 3 on the heat medium system diagram in which the state of heat use performed at each base 30 and the temperature of the heat medium are displayed, and the unit price of unused heat at each base is added. Therefore, the state of heat accommodation in the area in charge of the heat trading support device 1 can be visualized and presented to the user. As a result, by checking this display screen, the user adjusts the heat usage of his / her base taking into account the unit price of unused heat and the status of heat usage at other bases, and schedules future heat usage. It becomes possible.

  By comparing the desired unused heat unit price set in advance with the current unused heat unit price, it is determined whether or not the heat interchange can be established at the next time. Therefore, it is possible to confirm whether or not the heat interchange can be established at each base 30.

  In this embodiment, among the heat collection and exhaust heat, the one with the higher client demand is treated as a charge, and the mechanism for purchasing the heat from the one with the lower client demand is adopted. Instead, the charge is made in either case. It may be the target. In this case, the unused heat unit price is set to zero yen or a low price for a base that is judged to have low client demand and high heat value.

  Further, in the case of purchasing heat, it is also possible to determine whether or not to start selling heat according to the desired unit price, as in the case of the billing described above. In this case, for example, each base registers the heat selling period and the desired heat purchase unit price in association with each other and transmits this information to the heat trading support device 1 for registration. The registered information is stored in the second storage unit 14 of the heat trading support device 1. Then, when the period for selling heat is started, the heat trading support device 1 compares the heat purchase unit price calculated by the heat rate calculation unit 13b with the desired heat purchase unit price, and the heat purchase unit price is equal to the desired heat purchase price. If the purchase unit price is exceeded, heat utilization (purchase of heat) is started, and the client terminal 3 at the base is notified that heat utilization has been started. On the other hand, when the heat purchase unit price is lower than the desired heat purchase unit price, the client terminal 3 is notified that the heat use has not started without starting the heat use.

  Further, in the present embodiment, the case where the heat rate calculation unit 13b calculates only the unused heat unit price has been described. For example, in accordance with a request from the client terminal 3, the charging information at each base is calculated, It is also possible to provide the client terminal 3 with a heat medium system diagram to which the billing information and the unused heat unit price are added.

  The billing information is given by the following equation (14), for example.

  Ccu = Cf × Q = Cfa × Cfr × Q (14)

  In the equation (14), Ccu is billing information, Cf is the unused heat unit price, and Q is the unused heat usage (kW).

  Further, in the present embodiment, the case where the required potential heat quantity and the required potential temperature at the next time are set from the client terminal 3 and stored in the second storage unit 14 has been described, but the required potential heat quantity and the required potential at the next time are described. The temperature may be estimated from past usage records, and the estimated information may be used to determine whether heat accommodation is possible. By doing in this way, for example, even when the required potential at the next time is not registered, it is possible to determine whether or not heat accommodation is possible, and it is possible to eliminate the need for the user to register these information. It becomes possible.

  In the present embodiment, the heat trading support device 1 transmits the first display information and the second display information to the client terminal 3, but in addition to these, the following information is sent to the client terminal 3. It is good also as transmitting.

[System diagram]
For example, as shown in FIG. 9, a system diagram in the facility at the base 30 may be transmitted and displayed on the display device 5 of the client terminal 3. In this case, display switching between the above-described second display information and the system system diagram may be possible. In the system system diagram, for example, a system diagram including heat pumping from the heat medium flow passage 40 is used. In FIG. 9, the state quantity and the unit price of heat charge are displayed as an example.

The state quantity includes the potential of the inflowing heat medium, the state quantity at each measurement point in the system, the amount of exhaust heat or heat collection, the ratio of the sewage use heat quantity to the current time potential, the system performance, and the like. Examples of the potential of the inflowing heat medium include potential temperature, potential flow rate, and potential heat quantity.
Since each measurement point in the system normally has measurement points related to items necessary for operating the system, the state quantities of those measurement points are displayed. Examples of these include temperature and flow rate measurement results.
Examples of the system performance include a heat source machine COP and a system COP.

The measurement results and the system performance information at the measurement points are included in, for example, information on heat use transmitted from the communication device 2 at each site 30 to the heat trading support device 1, and using these information, FIG. Display information as shown in FIG. Moreover, what is necessary is just to acquire the information regarding the basic frame of the system system | strain in each base 30 in advance from the base 30, and to store in the predetermined memory | storage part (for example, 1st memory | storage part) with which the heat trading support apparatus 1 is provided.
Further, other information can be easily obtained by performing arithmetic processing using the information that the heat trading support device 1 has.

[Past heat use results]
The past usage record may be transmitted to the client terminal 3. Examples of past utilization results include the amount and price of unused heat used, the unit price of heat charges, the amount of heat produced, the amount of power consumed, and the system performance.
Here, the amount of production heat means the amount of heat output from the heat source machine side (primary side) to the heat demand on the building side (secondary side). For example, in the case of cooling, it refers to the amount of heat produced by the heat source device with respect to the cooling load on the building side (the heat demand necessary to remove the heat in the room).

  About the utilization heat amount and charge of unused heat, you may make it display every month, every day, every hour by a bar graph. As for the heat charge unit price, for example, the fluctuation of the unit price may be displayed as a line graph. At this time, the temperature of the inflowing unused heat and the unit price of heat charge may be displayed simultaneously. Moreover, you may add outside temperature to such information, for example, it is good also as displaying together on the bar graph of the said heat bill unit price. As described above, the outside air temperature is an important factor in determining the unit price of heat charges. Therefore, the outside air temperature is advantageous information when making a schedule for heat utilization at the base 30.

The production heat quantity may be displayed as a bar graph every month, every day, and every hour. Of the amount of production heat, the amount of heat produced using unused heat, other than that, for example, the use of other heat sources of the facilities of the base 30 and the use of external heat supply facilities may be displayed in different colors. .
For example, the information on the amount of manufacturing heat is received from the communication device 2 at the base at predetermined time intervals, and the received information may be used.

The power consumption may be displayed as a bar graph for every month, every day, and every hour.
As for the power consumption, for example, the heat trading support device 1 may acquire and use it from an external system that manages power consumption via a predetermined network.

  Regarding the system performance, for example, the fluctuation of the system COP including the heat source machine COP and the auxiliary machine may be displayed in a line graph. In this case, it is good also as displaying for every month, every day, and every time, for example. Further, the system status may be displayed together. FIG. 10 shows a display example of system performance for a turbo refrigerator. In FIG. 10, the chilled water outlet temperature, the chilled water flow rate ratio, the cooling water inlet temperature, the cooling water outlet temperature, the heat source unit COP, and the refrigerator load factor for each day are displayed.

[Operational support for bases]
It is also possible to provide information useful for operational support for heat utilization at the site, such as setting the unit price of heat charges at the site from past data.
For example, comparison information between the inflow potential and the required potential is provided. For example, the inflow potential and the required potential are displayed in a line graph every month, every day, and every hour. Thereby, the user who confirmed the display screen can grasp the time and the time zone in which heat interchange is easily established. At this time, particularly important items are potential temperature, potential flow rate, and potential heat quantity. Moreover, it is good also as displaying outside temperature, manufacturing calorie | heat amount, etc. with these information.

  FIG. 11 shows an example of comparison information regarding the potential heat quantity. In FIG. 11, the horizontal axis represents time, and the vertical axis represents the amount of potential heat. In the example of FIG. 11, it can be seen that the heat accommodation was not established because the required potential heat amount exceeded the inflow potential heat amount from 12:00 to 24:00. By confirming this display information, the user at the base can grasp the tendency of the potential heat quantity, and can consider the time zone of heat utilization.

  In addition, when using a heat medium that has already been controlled to a desired temperature from an external facility such as a heat supply company owned by the government, etc., or after setting unused heat whose temperature is unstable to a desired temperature at the base, this For sites where both can be used as a heat medium, the heat supply unit price set by external equipment such as a heat supply public corporation and the case where a heat medium of a desired temperature is manufactured using unused heat Heat production unit price (= unused heat unit price + necessary to bring the heat medium (for example, cold water in the case of a turbo refrigerator) to a desired temperature using unused heat per unit in the base system) Information that is compared to the cost to be provided.

  The user of the site 30 can adjust the ratio of the amount of heat supplied from external equipment and the amount of heat supplied from unused heat by checking the display screen. That is, as shown in FIG. 12, when the heat production unit price is higher than the heat supply unit price, priority is given to heat supply from external equipment, and when the heat production unit price is lower than the heat supply unit price, Prioritize the use of heat. Thereby, cost reduction can be aimed at. Thus, it becomes possible to examine the utilization ratio of the system by the unused heat unit price.

  Furthermore, it is good also as providing the comparison information of the calorie | heat amount which can be manufactured by utilization of an actual heat production value and unused heat. For example, as shown in FIG. 13, the actual production heat quantity value and the manufacturable heat quantity are compared and displayed every time. At this time, the maximum manufacturable heat amount of the facility at the base is set as the upper limit. Within one day, the heat demand for hot water supply, heating, and cooling, and the amount of heat that can be produced by using unused heat fluctuate. For this reason, it becomes possible to propose to the user at the site a method of storing heat in a time zone in which the amount of heat that can be manufactured exceeds the demand and supplementing the amount of heat in a time zone in which the amount of heat that can be manufactured is below the demand.

The amount of heat that can be produced is calculated using the potential of the heat medium flowing into the base and the measurement data of the heat source equipment provided in the base.
For example, when the heat source facility is hot water supply, the amount of heat collected is calculated from the heat source water temperature and preset device characteristics for a certain heating capability between the heating capability and the maximum heating capability. If the calculated heat collection amount is smaller than the potential heat amount of the heat medium flowing into the base, heat interchange is established. Therefore, the heating capability at this time is set as the manufacturable heat amount.

  When the heat source equipment is a refrigerator, the amount of exhaust heat is calculated from the cooling water temperature and preset device characteristics for a certain refrigeration capacity between the refrigeration capacity and the rated refrigeration capacity at a certain time. The calculated exhaust heat quantity is compared with the potential heat quantity of the heat medium flowing into the base, and if heat interchange is established, the refrigeration capacity at this time is set as the manufacturable heat quantity. This is expressed by the following equation (15).

  Qu '= F (Q', T) (15)

  In the above equation (15), Qu ′ is the amount of heat exhausted or collected (kW) in the amount of heat that can be produced at a certain time, Q ′ is the amount of heat that can be produced at that time, and T is the temperature of the heat source water or cooling water (° C.) at that time. It is.

DESCRIPTION OF SYMBOLS 1 Heat trading support apparatus 2 Communication apparatus 3 Client terminal 4 WEB server 5 Display apparatus 11 1st memory | storage part 12 1st communication part 13 Processing part 13a Potential calculation part 13b Heat rate calculation part 13c Heat interchange establishment determination part 13d Display processing part 14 Second storage unit 15 Second communication unit

Claims (9)

It is applied to a heat medium system in which a plurality of bases that use heat are connected by a heat medium flow passage through which a heat medium circulates, and heat can be collected from the heat medium or exhausted to the heat medium at each of the bases. A heat trading support device,
Receiving means for receiving information on heat use at each of the bases at a predetermined time interval from a communication device provided at each of the bases;
Heat rate calculation means for calculating the unit price of the heat medium at each base using the information on the heat utilization at each base received by the receiving means and the outside air conditions;
A heat trading support apparatus comprising: a transmission unit that transmits a unit price calculated by the heat rate calculation unit to a client terminal at each site. First storage means storing a basic frame visualizing the heat medium system;
On the basic frame read from the first storage means, a heat medium system diagram showing information on heat utilization of the bases was created, and the unit price of the heat medium at each base was displayed on the heat medium system diagram Display processing means for creating display information for each site,
The heat trading support device according to claim 1, wherein the transmission unit transmits the display information to the client terminal at each of the corresponding bases. The heat rate calculation means has a calculation formula including a calculation element for calculating the relative value of heat that changes according to the state of heat use at a plurality of the bases that use heat,
The heat trading support device according to claim 1, wherein the unit price of the heat medium is calculated using the calculation formula. Second storage means for storing heat utilization scheduling information at the site;
The heat utilization scheduling information includes information on exhaust heat or heat collection as a period and utilization mode in which heat utilization is desired,
The heat rate calculation means obtains the number of bases desired to exhaust heat and the number of bases desired to collect heat from the information stored in the second storage means for the same time period, and uses the one with the larger number of bases. 4. The heat trading support device according to claim 3, wherein a desired base is set as a billing target, and a base that desires a usage mode with a smaller number of bases is set as a purchase target.   The calculation formula is configured such that the unit price of the heat medium increases as the absolute value of the difference between the temperature of the heat medium flowing into the base and the temperature of the heat medium discharged from the base increases. The heat trading support device according to claim 4, wherein the unit price of the heat medium is calculated using the same calculation formula for both the target and the purchase target. The heat utilization scheduling information includes a desired heat utilization unit price desired by the base,
The unit price of the heat medium at the base calculated by the heat rate calculation unit is compared with the unit price of the desired heat usage of the base stored in the second storage unit, and the unit price of the heat medium is the unit price of the desired heat usage. The heat trading support device according to claim 5, further comprising a heat interchange establishment determination unit that determines that the heat interchange is established if the following is true. The heat utilization scheduling information includes a desired heat purchase unit price desired by the base,
The unit price of the heat medium at the base calculated by the heat rate calculation unit is compared with the desired heat purchase unit price of the base stored in the second storage unit, and the unit price of the heat medium is the desired heat purchase unit price. The heat trading support device according to claim 5, further comprising a heat interchange establishment determination unit that determines that heat accommodation is established when the above is true. The heat rate calculation means calculates the heat medium usage fee by multiplying the calculated unit price of the heat medium by the usage amount of the heat medium at each base,
The heat trading support device according to claim 1, wherein the transmission unit transmits the heat medium usage fee to the client terminal. The heat trading support device according to any one of claims 1 to 8,
A plurality of communication devices that are provided at each of the plurality of bases and transmit heat utilization information at the bases to the heat trading support device;
A heat trading support system comprising: a client terminal that is connected to the heat trading support device via a communication network and includes display means capable of displaying information received from the heat trading support device.

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