Control system and method for energy consumption reduction of commercial buildings using water source

Abstract

A control system for reducing energy consumption in a commercial building utilizing hydrothermal energy according to one embodiment of the present invention may include a battery for storing electrical energy, a thermal storage tank for storing thermal energy, a combined heat and power generator that generates electrical energy and thermal energy from gas and stores the generated electrical energy and thermal energy in the battery and the thermal storage tank, respectively, and a controller that controls the operation of the combined heat and power generator based on the battery capacity of the battery or the thermal storage capacity of the thermal storage tank, thereby controlling the charging or discharging of the battery or inducing the storage or dissipation of heat from the thermal storage tank.

Description

Technology Field

[0001] The present invention relates to a commercial building energy consumption reduction control system and method utilizing hydrothermal energy. Background Technology

[0002] In conventional building energy systems, single units such as heat pumps and boilers were utilized to handle the building's heating, cooling, and hot water loads. Additionally, the electricity required by the building is produced at a central power plant and supplied to the building through the power grid.

[0003] Figure 1 is a diagram showing a building energy supply system.

[0004] Referring to FIG. 1, the building energy supply system can receive energy from an energy source (110), such as a grid (111), natural gas (112), and water supply (113), and supply electricity to the building load (120) or provide heating and cooling. Electricity supplied from the grid (111) can directly supply electricity (121) to the building load (120) and can supply electricity to a cooling tower (131) and an electric cooler (132). The electric cooler (132) can receive electricity from the grid (111) and cool the building space (112) through a cooling coil (133). Additionally, natural gas (112) is supplied to a first gas boiler (134), and the first gas boiler (134) can heat the building space (123) through a heating coil (135). The above natural gas (112) is supplied to a second gas boiler (136) and heats the water supply (113) through a heat exchanger (137) to supply hot water (124) to the building.

[0005] The aforementioned conventional building energy supply system relies heavily on electricity produced from a central power plant, which entails high primary energy consumption and carbon dioxide emissions. Furthermore, multi-generation systems introduced to improve conventional building energy systems operate combined heat and power (CHP) generators based on simple control logic, resulting in limited reductions in primary energy consumption and carbon dioxide emissions compared to conventional systems. Additionally, following conventional control logic leads to a surplus of energy produced by CHP generators after meeting the building's load, resulting in the waste of significant amounts of electrical and thermal energy.

[0006] Therefore, a system capable of maximizing the performance of the building energy supply system through integrated control logic is required. Prior art literature

[0007] Korean Registered Patent No. 10-1203573, "Cogeneration Generator Control System and Method" The problem to be solved

[0008] The present invention aims to provide a control system and method for reducing energy consumption in commercial buildings using hydrothermal energy, which can maximize the performance of a building energy supply system through integrated control logic by including a heat pump utilizing hydrothermal energy and an energy production unit utilizing solar / thermal energy in a multi-generation system. means of solving the problem

[0009] A control system for reducing energy consumption in a commercial building utilizing hydrothermal energy according to one embodiment of the present invention may include a battery for storing electrical energy, a thermal storage tank for storing thermal energy, a combined heat and power generator that generates electrical energy and thermal energy from gas and stores the generated electrical energy and thermal energy in the battery and the thermal storage tank, respectively, and a controller that controls the operation of the combined heat and power generator based on the battery capacity of the battery or the thermal storage capacity of the thermal storage tank, thereby controlling the charging or discharging of the battery or inducing the storage or dissipation of heat from the thermal storage tank.

[0010] The above controller can control the battery to be charged when the charge amount of the battery is 50% or less.

[0011] The above controller can control the heat storage tank to store heat when the amount of heat stored in the heat storage tank is 50% or less.

[0012] The above controller can check the cooling and heating distribution ratio in which the equivalent load heat-electric ratio and the heat-electric ratio of the combined heat and power generator match, and control the operation of the combined heat and power generator based on the partial load ratio corresponding to the checked cooling and heating distribution ratio.

[0013] The above controller can adjust the heating and cooling distribution ratio by a set value and, based on the adjusted heating and cooling distribution ratio, determine whether the equivalent load heat-electric ratio matches the heat-electric ratio of the combined heat and power generator.

[0014] A method for controlling the reduction of energy consumption in a commercial building using hydrothermal energy according to an embodiment of the present invention may include the steps of: generating electrical energy from gas in a combined heat and power generator and storing the generated electrical energy in a battery; generating thermal energy from gas in the combined heat and power generator and storing the generated thermal energy in a thermal storage tank; and, in a controller, controlling the operation of the combined heat and power generator based on the battery capacity of the battery or the thermal storage capacity of the thermal storage tank, thereby controlling the charging and discharging of the battery or inducing the storage and dissipation of heat from the thermal storage tank.

[0015] The above method may further include a step of controlling the battery to be charged when the charge amount of the battery is 50% or less.

[0016] The above method may further include a step of controlling the heat storage tank to store heat when the heat storage amount of the heat storage tank is 50% or less.

[0017] The above method may include the step of verifying a cooling and heating distribution ratio in which the equivalent load heat-electric ratio and the heat-electric ratio of the combined heat and power generator match, and the step of controlling the operation of the combined heat and power generator based on a partial load ratio corresponding to the verified cooling and heating distribution ratio.

[0018] The above method may include the step of adjusting the heating and cooling distribution ratio by a set value, and the step of determining whether the equivalent load heat-electric ratio matches the heat-electric ratio of the combined heat and power generator based on the adjusted heating and cooling distribution ratio. Effects of the invention

[0019] According to the present invention, a heat pump utilizing hydrothermal energy and an energy production unit utilizing solar / thermal energy are included in a multi-generation system, and the performance of a building energy supply system can be maximized by an integrated control logic.

[0020] Furthermore, according to the present invention, by introducing a thermal and electrical energy storage system (thermal storage tank, battery) into a multi-generation system, the mismatch between the building's energy demand and the energy supply of the combined heat and power generator is mitigated, and wasted energy can be minimized. In addition, intermittent energy produced from a solar / thermal energy production unit is stored and can be reflected in the control logic.

[0021] In addition, according to the present invention, electricity and thermal energy produced from a combined heat and power generator are supplied to a hybrid air conditioning system to handle the cooling and heating load, which can maximize the energy efficiency of the combined heat and power generator.

[0022] In addition, according to the present invention, the performance of a multi-generation system can be maximized compared to a conventional building energy system by adding an integrated control logic that considers an energy production unit (cogeneration generator, solar / thermal panel), an energy conversion unit (hybrid air conditioning system), and an energy storage unit (thermal storage tank, battery). Brief explanation of the drawing

[0023] Figure 1 is a diagram showing a building energy supply system. FIG. 2 is a drawing showing a commercial building energy consumption reduction control system utilizing hydrothermal energy according to an embodiment of the present invention. FIG. 3 is a flowchart illustrating a method for controlling the reduction of energy consumption in commercial buildings using hydrothermal energy according to an embodiment of the present invention. Figure 4 is a graph showing the control logic of a combined heat and power generator according to an embodiment of the present invention. FIG. 5 is a graph showing the control logic of a combined heat and power generator according to an embodiment of the present invention. FIG. 6 is a graph showing the energy storage distribution of a mode-specific energy storage system according to an embodiment of the present invention. Figure 7 is a graph showing the yearly load distribution in a hospital according to an embodiment of the present invention. FIG. 8 is a graph showing the yearly load distribution in an office according to an embodiment of the present invention. Specific details for implementing the invention

[0024] Embodiments of the present invention will be described in detail below with reference to the attached drawings and the contents described therein, but the present invention is not limited or restricted by the embodiments.

[0025] The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, actions, and / or elements to the mentioned components, steps, actions, and / or elements.

[0026] As used herein, terms such as “examples,” “examples,” “aspects,” “examples,” etc., are not to be interpreted as implying that any described aspect or design is superior or advantageous to other aspects or designs.

[0027] Furthermore, the term 'or' refers to an inclusive or rather an exclusive or. That is, unless otherwise noted or is clear from the context, the expression 'x uses a or b' refers to any one of the natural inclusive permutations.

[0028] Additionally, singular expressions (“a” or “an”) used in this specification and claims should generally be interpreted to mean “one or more” unless otherwise stated or it is clear from the context that they relate to the singular form.

[0029] Additionally, terms such as "first," "second," etc., as used in this specification and claims may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0030] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0031] Meanwhile, in describing the present invention, if it is determined that a detailed description of related known functions or configurations could unnecessarily obscure the essence of the invention, such detailed description will be omitted. Furthermore, the terminology used in this specification is used to appropriately express embodiments of the present invention, and such terminology may vary depending on the intent of the user or operator, or the conventions of the field to which the invention belongs. Accordingly, the definitions of these terms should be based on the content throughout this specification.

[0032] FIG. 2 is a drawing showing a commercial building energy consumption reduction control system utilizing hydrothermal energy according to an embodiment of the present invention.

[0033] Referring to FIG. 2, a commercial building energy consumption reduction control system utilizing hydrothermal energy can receive energy from an energy source (110) such as a grid (111), natural gas (112), water supply (113), hydrothermal source (114), and solar power (115), and can supply electricity to or heat / cool a building load (120).

[0034] According to various embodiments, electricity supplied from the grid (111) may be stored in a battery (211) (or a battery energy storage system (BESS)). The electrical energy stored in the battery (211) may supply electricity (121) to a building load (120).

[0035] According to various embodiments, natural gas (112) may be supplied to a combined heat and power generator (220) (e.g., a prime mover). The combined heat and power generator (220) may produce electrical energy and thermal energy from the supplied natural gas.

[0036] According to various embodiments, the combined heat and power generator (220) may include a power generation unit (221), a heat recovery unit (222), and a controller (223). The controller (223) may control various equipment of the system, including the combined heat and power generator (220). For example, the controller (223) may be placed outside the combined heat and power generator (220).

[0037] According to various embodiments, the power generation unit (221) of the combined heat and power generator (220) may receive the natural gas (112) to produce electricity, and the produced electricity may be stored in the battery (221). The heat recovery unit (222) of the combined heat and power generator (220) may recover waste heat generated during the power production process of the combined heat and power generator (220) and store it in the thermal storage tank (230). An auxiliary boiler (232) provided separately from the combined heat and power generator (220) may receive the natural gas (112) to generate thermal energy and store the generated thermal energy in the thermal storage tank (230).

[0038] According to various embodiments, thermal energy supplied from a water source (114) can be supplied to a cooling / heat pump (or thermal pump) (213) and an absorption cooler (214) through a first heat exchanger (212) (plate heat exchanger). The cooling / heat pump (213) operates by receiving electricity from a battery (213) and can supply thermal energy supplied from the water source (113) to a cooling coil (216) or a heating coil (231). A second heat exchanger (215) is disposed between the absorption cooler (214) and the thermal storage tank (230) to supply thermal energy to the regenerator of the absorption cooler.

[0039] According to various embodiments, the cooling coil (216) may handle the cooling (122) of the building load by utilizing the cooling / heat pump (213) or the absorption cooler (214). The heating coil (231) may handle the heating (123) of the building load by utilizing the cooling / heat pump (213) or the thermal storage tank (230).

[0040] According to various embodiments, the PVT (240) may generate electrical energy and / or thermal energy by receiving solar energy / heat from solar energy (113). The electrical energy generated by the PVT (240) may be stored in a battery (211). The thermal energy generated by the PVT (240) may be stored in a thermal storage tank (230) via a third heat exchanger (241) and a fourth heat exchanger (241). According to various embodiments, the water supply (133) supplied to the building may supply hot water (124) to the building via the third heat exchanger (241) and the fourth heat exchanger (242).

[0041] Meanwhile, if the combined heat and power generator (220) is operated by considering only the electrical energy required by the building (e.g., electric tracking method) or by considering only the thermal energy required by the building (e.g., thermal tracking method), energy efficiency may be reduced. For example, referring to FIG. 4, if the combined heat and power generator is controlled by the electric tracking method according to conventional control logic, a heat shortage and a heat surplus may occur.

[0042] Referring to FIG. 4, PLR (Part load ratio) represents the partial load rate of the combined heat and power generator (220), and as it approaches 1 from 0, it operates closer to the rated capacity of the combined heat and power generator (220). PLR E and PLR Q represents the load rate of the electricity and heat production parts, respectively. As the combined heat and power generator (220) produces electricity and heat simultaneously, it exhibits a proportional linear performance curve as shown in FIG. 4.

[0043] Meanwhile, the electrical energy required by the building is E user and the thermal energy required by the building is Q user When this is done, the building's load exhibits an equivalent load curve as illustrated. At this time, if the combined heat and power generator (220) is controlled in an electric tracking manner according to conventional control logic, a heat shortage or excess heat may occur as illustrated in Fig. 4. Consequently, the energy produced by the combined heat and power generator (220) remains after satisfying the building's load, and a large amount of electrical and thermal energy may be wasted.

[0044] In the embodiment described below, as shown in FIG. 6, the capacity of the battery and the thermal storage capacity of the thermal storage tank are maintained at a constant level by the controller (223), and as shown in FIG. 5, the thermal efficiency can be maximized by controlling the thermal power generator (220) so that the equivalent load thermal ratio according to the equivalent load curve and the thermal ratio according to the performance curve of the thermal power generator (220) match.

[0045] FIG. 3 is a flowchart illustrating a method for controlling the reduction of energy consumption in commercial buildings using hydrothermal energy according to an embodiment of the present invention.

[0046] Referring to FIG. 3, the commercial building energy consumption reduction control system utilizing hydrothermal energy according to the present invention can receive external data and store it in a storage unit (302). The external data may include a building load profile, a hydrothermal temperature profile, weather conditions, an air conditioning system performance map, and a performance curve of a combined heat and power generator (220) (e.g., a prime mover). For example, the performance curve may be determined according to the type of combined heat and power generator (220).

[0047] In addition, according to an embodiment of the present invention, the system can set the capacity of the prime mover and the air conditioning system, set the capacity of the energy storage system (e.g., battery, thermal storage tank), and set the control logic. (304)

[0048] Next, according to an embodiment of the present invention, the system can generate an initial equivalent load curve (306). The initial equivalent load curve represents the electrical energy (E) required by the building as shown in FIG. 5. user ) and thermal energy (Q user It can be represented in the form of a curve based on ). For example, the above initial equivalent load curve can be generated depending on the capacity of the hybrid air conditioning system.

[0049] Next, according to an embodiment of the present invention, the system can monitor an internal storage system (308). For example, the system can check the amount of heat stored in the heat storage tank (230) and the amount of charge in the battery (211). If, as a result of the check, the amount of heat stored and / or the amount of charge is less than or equal to a reference value (e.g., 50%) (310), the initial equivalent load curve can be shifted upward (312). On the other hand, if the amount of heat stored and / or the amount of charge exceeds the reference value (e.g., 50%) (310), the initial equivalent load curve can be shifted downward (314).

[0050] Next, according to an embodiment of the present invention, the system can identify a cooling and heating distribution ratio (α) in which the equivalent load heat-electric ratio and the heat-electric ratio of the combined heat and power generator match, and control the operation of the combined heat and power generator based on a partial load rate corresponding to the identified cooling and heating distribution ratio. For example, the system can compare the equivalent load heat-electric ratio according to the current cooling and heating distribution ratio with the heat-electric ratio of the combined heat and power generator (316). As a result of the comparison, if the equivalent load heat-electric ratio according to the current cooling and heating distribution ratio matches the heat-electric ratio of the combined heat and power generator (318), the combined heat and power generator (220) can be operated at the corresponding partial load rate (322). The fact that the equivalent load heat-electric ratio and the heat-electric ratio of the combined heat and power generator match means the intersection point of the combined heat and power generator performance curve and the equivalent load curve in FIG. 5, and the controller (223) can control the combined heat and power generator (220) to operate at a partial load rate corresponding to the intersection point.

[0051] If, as a result of the above comparison, the equivalent load heat-electric ratio according to the current cooling and heating distribution ratio does not match the heat-electric ratio of the combined heat and power generator (318), the current cooling and heating distribution ratio (α) can be increased by a set value (e.g., Δα) (320) and then compared again. By repeating the above operation, a cooling and heating distribution ratio in which the equivalent load heat-electric ratio and the heat-electric ratio of the combined heat and power generator match can be confirmed. The process of adjusting the cooling and heating distribution ratio in which the equivalent load heat-electric ratio and the heat-electric ratio of the combined heat and power generator match is as follows: on the equivalent load curve of FIG. 5, electrical energy (E user ) and thermal energy (Q user This may refer to the process of moving the coordinates of the combined heat and power generator to a point on the performance curve. According to an embodiment of the present invention, the controller (223) can control the operation of the combined heat and power generator based on a partial load rate corresponding to the identified cooling and heating distribution ratio.

[0052] According to various embodiments, the initial equivalent load curve shifts upward or downward depending on the energy storage distribution of the energy storage system (e.g., thermal storage tank (230), battery (211)) for each mode of FIG. 6 described below. Additionally, the heat-to-electricity ratio of the equivalent load can be adjusted according to changes in the distribution ratio (α) of the cooling and heating load. The controller (223) of the system controls the system through the control logic of FIG. 3 as described above, thereby reaching a point where the heat-to-electricity ratio of the equivalent load matches the heat-to-electricity ratio of the combined heat and power generator (e.g., E in FIG. 5). user * and Q user *) can be found, and the combined heat and power generator can be controlled to operate at a partial load rate corresponding to the matching point.

[0053] According to various embodiments, in a hybrid air conditioning system according to the present invention, as shown in FIG. 1, a cooling / heat pump (213) of electric power and an absorption chiller (214) of thermal power are utilized to handle the cooling load, and a heating load is handled through a cooling / heat pump (213) of electric power and a heating heat exchanger of thermal power. At this time, an equivalent load curve can be drawn as shown in FIG. 5 according to the cooling / heating distribution ratio (α) allocated to electric and thermal power devices. As described above, when the control logic is operated by the controller (223), electric energy (E user ) and thermal energy (Q user ) can prevent energy waste or shortages by matching the performance curve of the combined heat and power generator, and maximize the energy efficiency of the combined heat and power generator.

[0054] According to various embodiments, the system releases stored energy from an energy storage system (e.g., a thermal storage tank (230), a battery (211)) to additionally support the load of the building, and as a result, can reach the electrical and thermal energy load required by the building.

[0055] For example, the combined heat and power generator (220) is operated by taking into account the stored energy in the energy storage system (e.g., thermal storage tank (230), battery (211)) under the control of the controller (223). That is, the combined heat and power generator (220) can overproduce energy than the building's load to replenish / charge the storage system, or underproduce energy to induce heat dissipation / discharge of the storage system.

[0056] FIG. 6 is a graph showing the energy storage distribution of a mode-specific energy storage system according to an embodiment of the present invention.

[0057] Referring to FIG. 6, when the stored energy of the thermal storage tank (230) and the battery (211) exceeds 50% of the capacity, as in Mode 1, the controller (223) can induce heat dissipation and discharge so that the released energy can handle the load of the building. Additionally, when the stored energy of the thermal storage tank (230) and the battery (211) is less than 50% of the capacity, as in Mode 2, the controller (223) can induce heat storage and charging and control the combined heat and power generator (220) to operate in consideration of the energy. Additionally, when the thermal energy stored in the thermal storage tank (230) exceeds 50% of the capacity and the electrical energy stored in the battery (211) is less than 50% of the capacity, heat dissipation and charging can be induced, respectively, as in Mode 3. In addition, as in Mode 4, when the thermal energy stored in the thermal storage tank (230) is less than 50% of the capacity and the electrical energy stored in the battery (211) exceeds 50% of the capacity, thermal storage and discharge can be induced, respectively.

[0058] As described above, the controller (223) can maintain the stored energy of the energy storage system (e.g., thermal storage tank (230), battery (211)) at a constant level through the control logic, which can prevent the energy produced by the combined heat and power generator (220) from being wasted or insufficient.

[0059] FIG. 7 is a graph showing the yearly load distribution in a hospital according to an embodiment of the present invention. FIG. 8 is a graph showing the yearly load distribution in an office according to an embodiment of the present invention.

[0060] Referring to FIGS. 7 and 8, it can be seen that the building load of electrical energy and thermal energy changes according to the season throughout the year. As described above, the system according to the embodiment of the present invention maintains the stored energy of the energy storage system (e.g., thermal storage tank (230), battery (211)) constant by means of control logic, and checks the distribution ratio of the heating and cooling load to maintain the electrical energy (E user ) and thermal energy (Q user By controlling it to match the performance curve of the combined heat and power generator, it is possible to prevent energy waste or shortage and maximize the energy efficiency of the combined heat and power generator.

[0061] The device described above may be implemented as a hardware component, a software component, and / or a combination of a hardware component and a software component. For example, the device and components described in the embodiments may be implemented using one or more general-purpose or special-purpose computers, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing unit may execute an operating system (OS) and one or more software applications executed on said operating system. Additionally, the processing unit may access, store, manipulate, process, and generate data in response to the execution of the software. For ease of understanding, the processing unit may be described as being used as a single unit, but those skilled in the art will understand that the processing unit may include multiple processing elements and / or multiple types of processing elements. For example, the processing unit may include multiple processors or one processor and one controller. In addition, other processing configurations, such as parallel processors, are also possible.

[0062] Software may include computer programs, code, instructions, or a combination of one or more of these, and may configure a processing unit to operate as desired or command the processing unit independently or collectively. Software and / or data may be permanently or temporarily embodied in any type of machine, component, physical device, virtual equipment, computer storage medium or device, or transmitted signal wave so as to be interpreted by the processing unit or to provide instructions or data to the processing unit. Software may be distributed over networked computer systems and may be stored or executed in a distributed manner. Software and data may be stored on one or more computer-readable recording media.

[0063] The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., either alone or in combination. The program instructions recorded on the medium may be those specifically designed and configured for the embodiment, or they may be those known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes; optical recording media such as CD-ROMs and DVDs; magneto-optical media such as floptical disks; and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Examples of program instructions include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. The hardware devices described above may be configured to operate as one or more software modules to perform the operation of the embodiment, and vice versa.

[0064] Although the embodiments have been described above with reference to limited examples and drawings, those skilled in the art can make various modifications and variations from the description above. For example, suitable results can be achieved even if the described techniques are performed in a different order than described, and / or the components of the described system, structure, device, circuit, etc. are combined or assembled in a form different from described, or replaced or substituted by other components or equivalents.

[0065] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below.

Claims

Claim 1 A commercial building energy consumption reduction control system utilizing hydrothermal energy comprises: a battery for storing electrical energy; a thermal storage tank for storing thermal energy; a combined heat and power generator for generating electrical energy and thermal energy from gas and storing the generated electrical energy and thermal energy in the battery and the thermal storage tank, respectively; and a controller for controlling the operation of the combined heat and power generator based on the battery capacity of the battery or the thermal storage capacity of the thermal storage tank, thereby controlling the charging or discharging of the battery or inducing the storage or dissipation of heat from the thermal storage tank, wherein the controller identifies a cooling and heating distribution ratio in which the equivalent load heat-electric ratio matches the heat-electric ratio of the combined heat and power generator, and controls the operation of the combined heat and power generator based on a partial load ratio corresponding to the identified cooling and heating distribution ratio. Claim 2 A commercial building energy consumption reduction control system utilizing hydrothermal energy, wherein the controller controls the battery to be charged when the charge amount of the battery is 50% or less. Claim 3 A commercial building energy consumption reduction control system utilizing hydrothermal energy, wherein the controller controls the thermal storage tank to store heat when the amount of heat stored in the thermal storage tank is 50% or less. Claim 4 delete Claim 5 A commercial building energy consumption reduction control system utilizing hydrothermal energy, wherein, in claim 1, the controller adjusts the cooling and heating distribution ratio by a set value and, based on the adjusted cooling and heating distribution ratio, determines whether the equivalent load heat-electric ratio matches the heat-electric ratio of the combined heat and power generator. Claim 6 A method for controlling the reduction of energy consumption in a commercial building using hydrothermal energy, comprising: a step of generating electrical energy from gas in a cogeneration generator and storing the generated electrical energy in a battery; a step of generating thermal energy from gas in the cogeneration generator and storing the generated thermal energy in a thermal storage tank; a step of controlling the operation of the cogeneration generator based on the battery capacity of the battery or the thermal storage capacity of the thermal storage tank in a controller, thereby controlling the charging and discharging of the battery or inducing the storage and release of heat from the thermal storage tank; a step of confirming a cooling and heating distribution ratio in which the equivalent load heat-electric ratio matches the heat-electric ratio of the cogeneration generator; and a step of controlling the operation of the cogeneration generator based on a partial load rate corresponding to the confirmed cooling and heating distribution ratio. Claim 7 A method for controlling energy consumption reduction in commercial buildings utilizing hydrothermal energy, wherein, in claim 6, the method further comprises the step of controlling the battery to be charged when the charge amount of the battery is 50% or less. Claim 8 A method for controlling the reduction of energy consumption in a commercial building using hydrothermal energy, wherein, in claim 6, the method further comprises the step of controlling the thermal storage tank to store heat when the amount of heat stored in the thermal storage tank is 50% or less. Claim 9 delete Claim 10 A method for controlling energy consumption reduction in commercial buildings utilizing hydrothermal energy, wherein, in claim 6, the method comprises: a step of adjusting the cooling and heating distribution ratio to a set value; and a step of determining whether the equivalent load heat-electric ratio matches the heat-electric ratio of the combined heat and power generator based on the adjusted cooling and heating distribution ratio.

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