KR20240071469A - Eco-friendly building technology feasibility evaluation system for green remodeling implementation - Google Patents

Abstract

A business evaluation system for eco-friendly building technology to implement green remodeling is launched. The business feasibility evaluation system of eco-friendly building technology for implementing green remodeling according to the present invention includes an economic feasibility DB construction unit that builds a whole life cycle economic feasibility database for each eco-friendly building technology, and a carbon cost DB construction unit that constructs a carbon cost database for each eco-friendly building technology. , and a business feasibility evaluation department that evaluates the business feasibility of eco-friendly building technology by integrating the economic feasibility and environmental feasibility of green remodeling through linkage with the economic feasibility database and the carbon cost database.

Description

Business feasibility evaluation system for eco-friendly building technology for implementing green remodeling {ECO-FRIENDLY BUILDING TECHNOLOGY FEASIBILITY EVALUATION SYSTEM FOR GREEN REMODELING IMPLEMENTATION}

Embodiments of the present invention relate to a business evaluation system for building technology, and more specifically, to a business evaluation system for eco-friendly building technology for implementing green remodeling.

In the construction field, which consumes large amounts of natural and energy resources and emits more than 30% of greenhouse gas emissions worldwide, the concept of green building was introduced to practice the ideology of sustainable development, and legal regulations and policies were implemented. The construction of green buildings is gradually expanding through support. Even in the market of old buildings, green buildings refer to buildings that have high energy use efficiency and a high rate of use of renewable energy and minimize greenhouse gas emissions, and are a key technology for realizing green remodeling in old buildings, represented by active/passive technologies. Eco-friendly building technologies are being applied in a variety of ways. Eco-friendly building technologies generally have inseparable initial costs and increased maintenance costs.

It is most important to select eco-friendly building technology by comprehensively considering the costs incurred by installing active/passive technologies and the environmental benefits from a life-cycle perspective that can be obtained from eco-friendly building technology. However, in the past, the environmental benefits that can be obtained from eco-friendly building technology were mainly analyzed only in terms of carbon emission reduction, and the environmental and economic feasibility of eco-friendly building technology were not integrated, but were presented only as individual analysis values.

Research on deriving priorities for active/passive technologies using the above analysis values also has limitations in that the priorities were derived subjectively using a survey method. Accordingly, there is a need for technology to help architects more objectively and efficiently select eco-friendly building technologies at the architectural design stage, where the potential for realizing green buildings is highest.

Related prior art documents include Republic of Korea Patent Publication No. 10-2020-0145876 (Title of the invention: Integrated evaluation method and evaluation system for remodeling business feasibility through integrated evaluation index for remodeling business feasibility of buildings, publication date: December 31, 2020).

The purpose of the present invention is to evaluate business feasibility by applying economic and carbon costs when remodeling an existing building by applying eco-friendly building technology, and to provide the results of the evaluation of business feasibility to users (decision makers). The goal is to provide a business evaluation system for eco-friendly building technology for implementing green remodeling that can provide users with information to help them make decisions about whether to proceed with remodeling and, if so, to what extent.

The problem to be solved by the present invention is not limited to the problem(s) mentioned above, and other problem(s) not mentioned will be clearly understood by those skilled in the art from the description below.

The above purpose is, according to an embodiment of the present invention, an economic DB construction unit for constructing a life cycle economic database for each eco-friendly building technology, a carbon cost DB construction unit for constructing a carbon cost database for each eco-friendly building technology, and the economic database. and a business feasibility evaluation unit that evaluates the business feasibility of eco-friendly building technology by integrating the economic and environmental feasibility of green remodeling through linkage with the carbon cost database. achieved.

Preferably, the eco-friendly building technology is divided into active technology and passive technology, the economic DB construction unit constructs the life cycle economic database for each active and passive technology, and the carbon cost DB construction unit constructs the active technology. And the carbon cost database is established for each passive technology, and the business feasibility evaluation department can evaluate the business feasibility of active and passive technologies.

Preferably, the economic DB construction unit selects major cost categories that have a significant impact on stakeholders' decision-making in the early stages of the green remodeling project, sets active and passive technologies for the green remodeling, and sets up the selected major costs. Unit price information for each stage of the life cycle can be constructed based on the category and the active and passive technologies set above.

Preferably, the carbon cost DB construction unit can calculate the carbon cost for each active and passive technology by applying the carbon emissions trading unit price to the CO ₂ emissions for each active and passive technology.

Preferably, the business feasibility evaluation department adds the environmental cost (carbon cost) calculated by applying the amount of CO ₂ generated in the construction stage, operation stage, and demolition stage and the carbon emission trading unit price to the economic feasibility evaluation cost item to determine the business feasibility of active and passive technologies. can be evaluated.

Preferably, the business evaluation unit may separately evaluate the business feasibility of active technology and the business feasibility of passive technology, and provide the business evaluation result to the user by dividing it into active technology and passive technology.

Preferably, the business feasibility evaluation department reports the business feasibility analysis results by dividing the annual energy cost savings, payback period, net reduction, internal rate of return (IRR), and life cycle cost into cases of applying passive technology and cases of applying active technology. It can be provided to the user.

According to an embodiment of the present invention, when remodeling an existing building by applying eco-friendly building technology is attempted, the business feasibility is evaluated by applying economic and carbon costs, and the results of the business feasibility evaluation are provided to the user (decision maker). By providing the user with a decision on whether to proceed with remodeling and, if so, how far to proceed (e.g., whether to proceed with remodeling by applying only passive technology or whether to proceed with remodeling by applying active technology as well as passive technology) We can provide helpful information.

Figure 1 is a block diagram illustrating a business evaluation system for eco-friendly building technology for implementing green remodeling according to an embodiment of the present invention.
Figure 2 is a diagram showing the number of economic databases built for each active/passive technology as an example.
Figure 3 is a diagram showing an example of an economic feasibility database for each active/passive technology.
Figure 4 is a diagram showing an example of building a carbon cost database for each active/passive technology.
Figure 5 is a diagram showing an algorithm for building a carbon cost database for each active/passive technology.
Figures 6 to 12 are examples showing a project registration screen, an information input screen, and a business evaluation result output screen in the business feasibility assessment algorithm for active/passive technologies including carbon costs (GRLCC).
Figure 13 is a flowchart illustrating a business evaluation method of eco-friendly building technology for implementing green remodeling according to an embodiment of the present invention.

The advantages and/or features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and are within the scope of common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In addition, preferred embodiments of the present invention to be implemented below are provided in each system function configuration in order to efficiently explain the technical components constituting the present invention, or system functions commonly provided in the technical field to which the present invention pertains. The configuration will be omitted whenever possible, and the description will focus on the functional configuration that must be additionally provided for the present invention. If a person has ordinary knowledge in the technical field to which the present invention pertains, he or she will be able to easily understand the functions of conventionally used components among the functional configurations not shown and omitted below, as well as the omitted configurations as described above. The relationships between elements and components added for the present invention will also be clearly understood.

In addition, in the following description, "transmission", "communication", "transmission", "reception" and other similar terms of signals or information refer to the direct transmission of signals or information from one component to another component. In addition, it also includes those transmitted through other components. In particular, “transmitting” or “transmitting” a signal or information as a component indicates the final destination of the signal or information and does not mean the direct destination. This is the same for “receiving” signals or information.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a block diagram illustrating a business evaluation system for eco-friendly building technology for implementing green remodeling according to an embodiment of the present invention.

Referring to FIG. 1, the business feasibility evaluation system 100 of eco-friendly building technology for implementing green remodeling according to an embodiment of the present invention includes an economic database (DB) construction unit 110, a carbon cost DB construction unit 120, It may be configured to include a business evaluation unit 130 and a control unit 140. Here, eco-friendly building technologies subject to business feasibility assessment can be divided into active technologies and passive technologies.

The economic feasibility DB construction unit 110 can construct a life cycle economic feasibility database for each active and passive technology for eco-friendly building technology. At this time, as shown in FIG. 2, the economic DB construction unit 110 includes boilers, combustors, radiators, air-conditioning equipment, lighting equipment, heating equipment, drying equipment, air-conditioning and heating equipment, air-conditioning equipment, wind power equipment, new and renewable energy, and insulation materials. , a full life cycle economic feasibility database of approximately 2,000 cases can be built for windows, doors, and glass.

As shown in Figure 3, the detailed life cycle economic database includes material costs, direct labor costs, indirect labor costs, other expenses, general management costs, industrial accident insurance premiums, employment insurance premiums, health insurance premiums, long-term care insurance premiums for the elderly, pension insurance premiums, and retirement deduction contribution costs. , it can be composed of environmental conservation cost, replacement cycle, and replacement rate.

To this end, the economic DB construction unit 110 may select major cost categories that have a significant impact on stakeholders' decision-making in the early stages of the green remodeling project. At this time, the economic DB construction unit 110 may select direct construction costs (material cost + labor cost + security), operating energy cost, and maintenance cost that are dependent on the physical aspect of the building as the main cost categories.

Additionally, the economic DB construction unit 110 can set active and passive building materials for the green remodeling. The economic DB construction unit 110 may construct unit price information for each stage of the life cycle based on the selected main cost category and the set active and passive building materials.

At this time, the economic DB construction unit 110 selects an architectural method through envelope technology as a passive technology as a remodeling element technology to improve the energy efficiency of the building, and air conditioning, heat source equipment system, and renewable energy as active technologies. Technology can be selected.

Here, the unit price information for each stage of the life cycle may include material costs in the production stage, labor costs and expenses in the construction stage, and repair costs and replacement parts in the operation stage. The economic DB construction unit 110 can calculate indirect labor costs and expenses according to the scale and period of construction, taking into account the remodeling characteristics of the existing building.

Below, in relation to the process of building a full life cycle economic feasibility database for each active and passive technology, the details are divided into 1) setting major cost categories, 2) setting green remodeling active and passive building materials, and 3) building unit price information for each life cycle stage. It is explained as follows.

1) Establish main cost categories

The initial stage of a construction project is the stage with the highest potential for cost reduction throughout the entire process, and predicting the cost to be invested in the building at this point is a very important factor in determining the success or failure of the entire project.

Therefore, in order to efficiently evaluate the entire cost of a construction project in the early stages of a construction project, it is very important to select major cost categories that have a significant impact on decision-making and simplify the information required for evaluation.

In general, in the life cycle cost evaluation, the cost by life cycle is classified into the production and construction stage (initial investment cost), operation stage (operating cost), and disposal stage (demolition cost), and is specifically divided into planning/design cost. , It is divided into direct construction costs, operating energy costs, maintenance costs, general management costs, and demolition costs.

In one embodiment of the present invention, among the various life-cycle cost categories, planning/design costs and general management costs that are not dependent on the physical aspects of the building and are related to the construction project or building management are excluded from the main cost category.

Meanwhile, demolition cost is a cost category that is dependent on the physical aspects of the building, but there are many constraints on cost prediction and estimation in the early stages of a construction project, and its contribution was found to be relatively insignificant from the perspective of the life cycle cost of the building. .

Therefore, in one embodiment of the present invention, the main cost categories that have a significant impact on the decision-making of stakeholders in the early stages of the project are direct construction costs (material costs + labor costs + expenses), operating energy costs, and maintenance, which are dependent on the physical aspects of the building. Repair costs can be selected.

2) Green remodeling active and passive building material settings

Green remodeling refers to the act of reducing energy consumption to improve the energy efficiency of a building, or major repairs or partial expansion to meet eco-friendly building standards. According to the Ministry of Land, Infrastructure and Transport's Green Together Green Remodeling element technology and Zero Energy Billing certification system components, green remodeling representative element technology is divided into resource reduction technology, energy reduction technology, environmental load reduction technology, and spatial performance improvement technology.

Resource-reduction technologies are divided into low-carbon technologies, resource circulation technologies, and PC methods, and energy-reduction technologies can be divided into envelope systems, high-efficiency facilities, and new and renewable fields. Environmental load reduction technology can be divided into energy and resource utilization technology through building operation management technology, and spatial performance improvement technology can be divided into maintenance and expansion technology.

In particular, as a result of the analysis of green remodeling cases, energy-saving technologies were intensively investigated, and as representative element technologies, they can be broadly divided into the architectural field, facility field, and renewable energy field. Depending on the target classification, element technology can be selected according to passive elements and active elements.

In one embodiment of the present invention, as a remodeling element technology to improve the energy efficiency of buildings, an architectural method through envelope technology can be selected as a passive technology, and air conditioning, heat source equipment system, and new renewable technology can be selected as active technologies. there is.

3) Establishment of unit price information for each stage of life cycle

3-1) Production stage

Unit price information at the production stage refers to the material cost represented by the initial investment cost, and the Korea Price Information (KPI), Korea Price Research Center (KPRC), and Korea Environmental Industry & Technology Institute's eco-friendly construction Unit price information can be constructed based on the procurement unit price of the material information system. Unit price information for all products can be entered through data provided by KPI and KPRC's Green Construction Materials Information System.

Korea Price Information provides price information on approximately 250,000 construction-related materials. In detail, it includes joint construction materials, civil engineering materials, landscaping construction materials, building construction materials, water supply and drainage construction materials, heating and cooling construction materials, and machinery/ We are building the most influential system for construction-related unit cost information, including tool materials, environmental construction materials, electrical construction materials, information and communication materials, and firefighting construction materials.

Information on eco-friendly construction materials from the Korea Price Association and the Korea Environmental Industry and Technology Institute (KEITI), an organization under the Ministry of Environment (ME), provides EPD certification, carbon footprint certification, low-carbon product certification, and eco-label certification products. Provides information.

The Good Recycled Products Information System of the Resources Circulation Industry Certification Institute (RCICI), an organization under the Ministry of Trade, Industry and Energy (MTI), provides information on GR certified products. As of June 2020, there are 87,707, including 542 EPD certifications, 2,151 carbon footprint certifications, 512 low-carbon product certifications, 82,855 eco-label certifications, and 1,647 GR certifications.

As remodeling element technology, passive technology can be selected as an architectural method through envelope technology, and active technology can be air conditioning, heat source equipment system, and new and renewable technology. As major cost categories, direct construction costs (material costs + labor costs + expenses), operating energy costs, and maintenance costs that are dependent on the physical aspects of the building can be selected.

Building unit price information for each stage of the life cycle was divided into the production stage, construction stage, and operation stage. The unit price information in the production stage corresponds to the material cost represented by the initial investment cost, and the Korea Price Information (KPI) of the Korea Price Information, Korea Price Association, and Unit price information can be constructed based on the procurement unit price of the Korea Environmental Industry and Technology Institute's eco-friendly construction material information system.

Unit price information at the construction stage consists of labor costs and expenses. Direct labor costs are based on the Ministry of Land, Infrastructure and Transport's standard market unit price and standard product price. Indirect labor costs are based on the Public Procurement Service's construction cost calculation ratio application standards, and expenses are based on the Public Procurement Service's construction cost calculation standards. Cost calculation was based on the ratio application standard.

Unit price information at the operation stage consists of repair and replacement costs. Repair costs may apply to passive materials, and replacement costs may apply to active materials. The replacement cycle can be set based on the replacement cycle of the Housing Act Enforcement Rules' long-term repair plan establishment standards, the useful life of the Public Procurement Service Notice, and the ASHRAE Handbook.

3-2) Construction stage

Unit price information at the construction stage consists of labor costs and expenses. Direct labor costs are based on the Ministry of Land, Infrastructure and Transport's standard market unit price and standard product price. Indirect labor costs are based on the Public Procurement Service's construction cost calculation ratio application standards, and expenses are based on the Public Procurement Service's construction cost calculation standards. Cost calculation was based on the ratio application standard.

Regarding the application standards (scale) of the standard market unit price for construction work, Article 37 of the 'Standards for Preparation of Expected Prices (Calculation of Expected Prices Based on Standard Market Unit Prices)' and Supplementary Provisions Article 3, which are subordinate provisions of the Act on Contracts to which the State is a party. (Special provisions for application of standard market unit price)' and applies to estimated prices of KRW 10 billion or more.

In one embodiment of the present invention, considering the characteristics of remodeling existing buildings, the construction cost calculation ratio is determined according to the construction scale and period in the case of indirect labor costs and expenses, so the direct construction cost is KRW 5 billion or more, which is the level of remodeling construction rather than new construction. , indirect labor costs and expenses can be calculated based on a scale of less than 30 billion won and a construction period of 7 to 12 months.

3-3) Operation/maintenance stage

Unit price information at the operation stage consists of repair and replacement costs. Repair costs correspond to passive materials, and replacement costs correspond to active materials. In the case of passive materials constructed in the current year, the replacement cycle can be set based on the replacement cycle of the housing law enforcement rules for establishing a long-term repair plan, the useful life of the Public Procurement Service notification, and the ASHRAE Handbook.

Meanwhile, the carbon cost DB construction unit 120 can build a carbon cost database for each active and passive technology for eco-friendly building technology. To this end, the carbon cost DB construction unit 120 can calculate the carbon cost for each active and passive technology by applying the carbon emissions trading unit price to the CO ₂ emissions for each active and passive technology.

Carbon cost generally refers to the energy cost due to energy use and the cost due to _CO2 emissions. Since energy costs are treated as operating costs incurred at the operation stage in life cycle economic analysis (LCC), carbon costs refer to the _CO2 cost incurred when using fossil fuels to produce the energy needed for building operation. do.

CO ₂ costs are calculated by applying the carbon emissions trading unit price to CO ₂ emissions. The carbon emissions trading unit price is calculated by applying the EUA (Europe Union Alliance) transaction price of the European Climate Exchange (ECX), which is currently used as an international indicator of the carbon emissions trading unit price.

Referring to Figures 4 and 5, the performance of active/passive technologies is compared with alternatives based on the Reference Model, and the evaluation items are divided into heating, cooling, lighting, hot water supply, return, and other to calculate the total amount of electricity and gas consumption. can do. By converting this into carbon emissions by energy source, a carbon cost database for each active/passive technology can be built. That is, the carbon cost DB construction unit 120 can construct the carbon cost database for each active/passive technology by calculating the carbon cost using Equation 1 below.

[Equation 1]

Carbon cost (CO ₂ cost) = Consumption by energy source by active/passive technology * Carbon emission factor by energy source * Carbon emissions trading unit price

The business feasibility evaluation unit 130 can evaluate the business feasibility of eco-friendly building technologies (active and passive technologies) by integrating the economic feasibility and environmental feasibility of green remodeling through linkage with the economic feasibility database and the carbon cost database.

In other words, the business feasibility evaluation department 130 adds the environmental cost (carbon cost) calculated by applying the amount of CO ₂ generated in the construction stage, operation stage, and demolition stage and the carbon emissions trading unit price to the economic feasibility evaluation cost items to determine active and passive The business feasibility of technology can be evaluated.

At this time, the business evaluation unit 130 may separately evaluate the business feasibility of the active and passive technologies, and provide the business feasibility evaluation results to the user by dividing them into active and passive technologies.

Meanwhile, the business feasibility evaluation unit 130 can apply a business feasibility evaluation algorithm of active/passive technology including the carbon cost. The business feasibility evaluation algorithm calculates the carbon cost calculated by applying CO ₂ emissions and the carbon emissions trading unit price as the cost. It was added to the item. Accordingly, the present invention applies the CO ₂ emissions and carbon emissions trading unit price generated in the construction stage, operation stage, and demolition stage to the cost items consisting of the existing construction cost in the construction stage, maintenance cost in the operation stage, and demolition cost in the demolition stage. By adding the calculated environmental costs to the economic evaluation cost items, we present a more reasonable method of evaluating the business feasibility of active/passive technologies.

In general, when reviewing green remodeling feasibility and establishing a project cost procurement plan, calculating costs and profitability depending on whether active/passive technology is applied is complicated, but the feasibility evaluation department 130 uses a feasibility evaluation algorithm to conduct integrated analysis with minimal input. By presenting the results, the information necessary for decision-making in selecting the optimal business model can be provided. In addition, the business feasibility evaluation department (130) reports annual energy cost savings, payback period, net reduction, internal rate of return (IRR), life cycle cost (LCC), etc. through the reporting function of the business feasibility analysis results. It can be provided to users by dividing into cases where passive technology is applied and cases where active technology is applied.

According to one embodiment, Equations 2 to 5 below may be applied in the business evaluation algorithm.

[Equation 2]

Life cycle cost (LCC) = construction cost + maintenance cost + carbon cost

Construction cost = passive/active technology cost + initial project cost

Maintenance cost = operating energy cost + operating management cost

Carbon cost = CO2 cost in construction phase + CO2 cost in operation phase

[Equation 3]

Present value coefficient for costs that occur periodically

=

i = nominal discount rate, e = inflation rate, N = occurrence period

[Equation 4]

Present value coefficient of costs incurred each year =

i = nominal discount rate, n = analysis period

[Equation 5]

Present value coefficient of future costs =

i = nominal discount rate, n = analysis period

The control unit 140 can generally control the operation of the business feasibility evaluation system 100, that is, the economic feasibility DB building unit 110, the carbon cost DB building unit 120, and the business feasibility evaluation unit 130. there is. The control unit 140 may be implemented by functionally including some or all of the components such as the economic DB construction unit 110, the carbon cost DB construction unit 120, and the business feasibility evaluation unit 130. That is, the control unit 140 may perform some functions of the components or may perform all functions of the components.

The control unit 140 controls the overall operation of the business evaluation system 100 and may include a processor such as a CPU. The control unit 140 may control other components included in the business evaluation system 100 to perform operations corresponding to user input received through the input/output unit. Here, the processor can process instructions within the computing device, such as displaying graphic information to provide a GUI (Graphic User Interface) on an external input or output device, such as a display connected to a high-speed interface. This may include instructions stored in memory or a storage device. In other embodiments, multiple processors and/or multiple buses may be utilized along with multiple memories and memory types as appropriate. Additionally, the processor may be implemented as a chipset comprised of chips including multiple independent analog and/or digital processors.

In this way, the business feasibility evaluation system 100 of eco-friendly building technology for implementing green remodeling according to an embodiment of the present invention can provide user convenience and speed when promoting a green remodeling project, and can provide annual and business feasibility analysis support through business feasibility analysis support. It can be used to establish action plans for each model.

In addition, the effect of reducing national building energy and reducing greenhouse gases can be expected through activating green remodeling projects, and can be used to establish activation policies according to type and size of green remodeling buildings. In addition, it provides business plan establishment and decision-making support for each passive/active technology for green remodeling, and can be used to analyze the green remodeling effect of passive/active technology and establish activation policies.

Figures 6 to 12 are examples showing a project registration screen, an information input screen, and a business evaluation result output screen in the business feasibility assessment algorithm for active/passive technologies including carbon costs (GRLCC).

Figure 6 is a project registration screen, which is a screen for modifying, confirming, and printing projects from a list of existing registered green remodeling projects.

Figure 7 is a basic information input screen, where the responsible organization registers basic information on the building to be remodeled. On the basic information input screen, you can enter basic information through the following process.

STEP 1. Enter basic information necessary for evaluating the feasibility of building remodeling, such as building use, structure, size, area, year of completion, and year of evaluation.

STEP 2. Enter the monthly rent and deposit, leased area, vacancy rate, deposit operating interest rate, etc. of the building before and after remodeling, depending on whether detailed analysis can provide cash flow assessment.

Figure 8 is a construction stage (passive/active technology) input screen, where passive materials/active materials required for green remodeling are selected. Passive materials target exterior walls/roofs/slabs and window systems among the envelope systems. On the construction stage input screen, you can enter information related to passive and active materials through the following process.

STEP 1. New passive material combinations can be added to the skin and window system through the add button at the bottom.

STEP 2. Delete the combination of envelope and window system through the delete button.

STEP 3. When you click the Add passive material shell button, if there is a shell material combination built in the GRLCC database, it will be displayed in the passive material shell list window. Otherwise, it will be displayed as blank. You can add new shell combinations through the Create button.

STEP 4. When selecting active/passive materials, the cost value is automatically calculated in connection with the life cycle cost database and carbon cost database.

Figure 9 is a construction stage (project cost) input screen, where construction cost information and project cost procurement conditions required when implementing green remodeling are entered, and basic financial data is automatically input according to the time of remodeling. On the construction stage input screen, you can enter project cost-related information through the following process.

STEP 1. Project cost: This is the step to enter the total project cost, construction cost, and incidental expenses required when carrying out remodeling of the project.

STEP 2. Project cost procurement conditions: The project period, project cost support rate, repayment conditions, and loan period according to the building manager's selection of fund type (project cost procurement) are automatically linked to the fund DB and can be entered automatically or entered directly by the manager.

STEP 3. Basic financial data: The latest average database values for inflation rate, discount rate, and energy price index increase rate (electricity, city gas, district heating, and other energy) are included in the basic financial data DB data* (see attached table) in the web program. It is linked and entered automatically, and when evaluating business feasibility, basic financial data is automatically combined and evaluated.

Figure 10 is an operating energy information input screen, which is a screen for inputting energy information for each energy source before green remodeling. On the operating energy information input screen, you can enter operating energy-related information through the following process.

STEP 1. Enter the monthly energy usage and cost of electricity (kWh), city gas (MJ), and district heat source (Mcal) for a minimum of 1 year and a maximum of 3 years.

STEP 2. The energy saving rate simulating green remodeling from the green remodeling affiliated organization is linked and entered on the web. Energy after remodeling is calculated depending on the selection of the total energy savings rate or the savings rate by energy source. And the energy consumption after remodeling is automatically calculated based on the energy saving rate.

Figure 11 is an operation management information input screen, which is a screen for entering operation management cost information before green remodeling. On the operation management information input screen, you can enter operation management-related information through the following process.

STEP 1. Enter operational and management costs for construction repairs, cleaning, replacement, and others on a monthly basis.

STEP 2. The increase/decrease rate of operating and management costs after simulation of the green remodeling affiliated organization is automatically linked and entered into the increase/decrease rate of operating and management costs after remodeling column. By entering the operation management cost information before remodeling, the operation management cost for each item after remodeling the project building is calculated and presented in the results.

Figure 12 is a business feasibility evaluation result output screen, and is a step in which the energy information/operation management information/economic analysis evaluation results of the project are divided on the web and the business feasibility evaluation results are provided. On the business feasibility evaluation result output screen, you can print the business feasibility evaluation results through the following process.

STEP 1. You can check the energy consumption of electricity, city gas, and local heat sources after remodeling using simulation values.

STEP 2. You can find out the unit price for each energy source based on the energy cost and savings rate before remodeling.

STEP 3. You can check the operation and management cost information for architecture, electricity, machinery, etc. after remodeling by applying the operation and management cost increase/decrease rate to the operation and management expenses for architecture, electricity, machinery, etc. before remodeling.

STEP 4. You can see the net reduction amount by year before and after remodeling, life cycle CO ₂ cost, revenue investment ratio (SIR) results, investment payback period, and economic analysis results table.

STEP 5. You can check the energy costs before and after remodeling used in the net savings and SIR results.

The device described above may be implemented with hardware components, software components, and/or a combination of hardware components and software components. For example, devices and components described in embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA), and a programmable logic unit (PLU). ), a microprocessor, or any other device capable of executing and responding to instructions. A processing device may execute an operating system (OS) and one or more software applications that run on the operating system. Additionally, a processing device may access, store, manipulate, process, and generate data in response to the execution of software. For ease of understanding, a single processing device may be described as being used; however, one of ordinary skill in the art will recognize that a processing device may include multiple processing elements and/or multiple types of processing elements. You can see that there is. For example, a processing device may include multiple processors or one processor and one controller. Additionally, other processing configurations, such as parallel processors, are possible.

Software may include computer programs, code, instructions, or a combination of one or more of these, and may configure or, independently or in combination, instruct a processing device to operate as desired. Software and/or data may be transmitted to any type of machine, component, physical device, virtual device, computer storage medium or device, or transmitted signal wave, for the purpose of being interpreted by or providing instructions or data to the processing device. It can be embodied permanently or temporarily. Software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored on one or more computer-readable recording media.

Figure 13 is a flowchart illustrating a business evaluation method of eco-friendly building technology for implementing green remodeling according to an embodiment of the present invention.

The business feasibility evaluation method of eco-friendly building technology for implementing green remodeling described here can be performed by the business feasibility evaluation system (see 100 in FIG. 1). The above business feasibility evaluation method is only one embodiment of the present invention. In addition, various steps may be added as necessary as follows, and the steps below may also be performed by changing the order, so the present invention is as follows. It is not limited to each step described or its order.

Referring to FIGS. 1 and 13 , in step 1310, the economic feasibility database construction unit 210 of the business feasibility evaluation system 100 may build a full life cycle economic feasibility database for each active and passive technology.

Next, in step 1320, the carbon cost DB construction unit 220 of the business evaluation system 100 may build a carbon cost database for each active and passive technology.

Next, in step 1330, the business feasibility evaluation unit 230 of the business feasibility evaluation system 100 integrates the economic feasibility and environmental feasibility of green remodeling through linkage with the economic feasibility database and the carbon cost database to evaluate active and passive technologies. Business feasibility can be evaluated.

Next, in step 1340, the business evaluation unit 230 may provide the business evaluation results to the user. At this time, the business evaluation unit 230 may provide the business evaluation results by dividing them into the active technology and the passive technology.

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., singly or in combination. Program instructions recorded on the medium may be specially designed and configured for the embodiment or may be 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 CDROMs and DVDs, magneto-optical media such as floptical disks, and ROM and RAM. It includes specially configured hardware devices to store and execute program instructions, such as flash memory, etc. Examples of program instructions include machine language code, such as that produced 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 operations of the embodiments, and vice versa.

As described above, although the embodiments have been described with limited examples and drawings, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent.

Therefore, other implementations, other embodiments and equivalents of the claims also fall within the scope of the following claims.

100: Business feasibility evaluation system for eco-friendly building technology
110: Economic DB Construction Department
120: Carbon cost DB construction department
130: Business Evaluation Department
140: control unit

Claims (7)

Economic DB Construction Department, which builds a life cycle economic database for each eco-friendly building technology;
Carbon Cost DB Construction Department, which builds a carbon cost database for each eco-friendly building technology; and
A business evaluation department that evaluates the business feasibility of eco-friendly building technology by integrating the economic feasibility and environmental feasibility of green remodeling through linkage with the economic feasibility database and the carbon cost database.
A business evaluation system for eco-friendly building technology for implementing green remodeling, comprising:
According to paragraph 1,
The eco-friendly building technology is divided into active technology and passive technology.
The economic feasibility DB construction unit constructs the entire life cycle economic feasibility database for each active and passive technology,
The carbon cost DB construction unit builds the carbon cost database for each active and passive technology,
The business feasibility evaluation department is a business evaluation system for eco-friendly building technology for implementing green remodeling, characterized in that it evaluates the business feasibility of active and passive technologies.
According to paragraph 2,
The economic DB construction department
In the initial stage of the green remodeling project, major cost categories that have a significant impact on stakeholders' decision-making are selected, active and passive technologies of the green remodeling are set, and the selected major cost categories and the active and passive technologies set above are selected. A business feasibility evaluation system for eco-friendly building technology for implementing green remodeling, which is characterized by establishing unit price information for each stage of the life cycle based on .
According to paragraph 2,
The carbon cost DB construction department
A business evaluation system for eco-friendly building technologies for implementing green remodeling, which is characterized by calculating the carbon cost for each active and passive technology by applying the carbon emissions trading unit price to the CO ₂ emissions for each active and passive technology.
According to paragraph 2,
The business feasibility evaluation department
It is characterized by evaluating the business feasibility of active and passive technologies by adding the environmental cost (carbon cost) calculated by applying the amount of CO ₂ generated in the construction stage, operation stage, and demolition stage and the carbon emission trading unit price to the economic evaluation cost item. A business evaluation system for eco-friendly building technology to implement green remodeling.
According to clause 5,
The business feasibility evaluation department
A business evaluation system for eco-friendly building technology for implementing green remodeling, which is characterized by separately evaluating the business feasibility of active technology and passive technology, and dividing the business evaluation results into active technology and passive technology and providing them to users.
According to clause 6,
The business feasibility evaluation department
The business feasibility analysis result reporting function provides users with annual energy cost savings, payback period, net reduction, internal rate of return (IRR), and life cycle cost divided into cases of applying passive technology and cases of applying active technology. A business evaluation system for eco-friendly building technology to implement green remodeling.