Method for quickly estimating air conditioner investment control based on building air conditioner cooling load

Abstract

The invention relates to a method for quickly estimating air conditioner investment control based on a building air conditioner cooling load, which is applied to a project proposal stage or a bidding estimation stage, and comprises the following steps: determining the cooling load of a target building; determining the building type of the target building; according to the building type of the target building, querying a pre-created cold load average cost index database, and determining a cold load average cost index of the target building; and determining the air conditioner project investment of the target building according to the cooling load of the building and the average cost index of the cooling load. According to the technical scheme, the air conditioner investment can be quickly estimated in a project proposal stage or a bidding estimation stage.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioning engineering, and particularly to a method for quickly estimating air conditioning investment control based on the cooling load of a building. Background Art

[0002] In the related art, in an Engineering, Procurement, Construction (EPC) project, the investment estimate of an air conditioning project requires a preliminary feasibility study plan or a preliminary design plan. According to the equipment list of the above-mentioned feasibility study plan or preliminary design plan, referring to the equipment unit prices of implemented projects, the investment estimate of the air conditioning project is determined. This method requires in-depth participation of HVAC design and has certain requirements for the design depth. In the project proposal stage or the tender estimate stage, due to the lack of a complete design plan, it is impossible to quickly estimate the air conditioning investment. Summary of the Invention

[0003] To overcome the problems existing in the related art, the present disclosure provides a method for quickly estimating air conditioning investment control based on the cooling load of a building, so as to solve the problem that in the project proposal stage or the tender estimate stage in the related art, due to the lack of a complete design plan, it is impossible to quickly estimate the air conditioning investment.

[0004] According to the first aspect of the embodiments of the present disclosure, there is provided a method for quickly estimating air conditioning investment control based on the cooling load of a building, which is applied to the project proposal stage or the tender estimate stage. The method includes:

[0005] Determine the cooling load of the target building;

[0006] Determine the building type of the target building;

[0007] According to the building type of the target building, query the pre-created database of cooling load average cost indexes to determine the cooling load average cost index of the target building;

[0008] Determine the air conditioning project investment of the target building according to the cooling load and the cooling load average cost index of the building.

[0009] In one implementation, the determination of the cooling load of the building includes:

[0010] When the building is a civil building, determine the cooling load of the civil building according to the cooling load estimation index list in the "Practical Heating and Air Conditioning Design Manual".

[0011] In one implementation, when the building is an industrial building, determine the cooling load of the industrial building according to the actual process equipment load or the plant load index.

[0012] In one embodiment, when the building is a civil building, according to the list of cold load estimation indicators in the "Practical Heating and Air Conditioning Design Manual", the cold load of the civil building is determined, including:

[0013] Determine the building area of the building;

[0014] Determine the cold load per unit area of the building according to the list of cold load estimation indicators in the "Practical Heating and Air Conditioning Design Manual";

[0015] Determine the cold load of the building according to the building area and the cold load per unit area.

[0016] In one embodiment, the list of cold load estimation indicators is as follows:

[0017]

[0018]

[0019] In one embodiment, the method further includes:

[0020] Determine the auxiliary verification air conditioning project price of the target building according to the equipment price and the price of auxiliary materials and equipment installation of the target building, so as to perform auxiliary verification on the air conditioning project price.

[0021] In one embodiment, the cold load average cost index database is as follows:

[0022]

[0023] .

[0024] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0025] By pre-creating a cold load average cost index database, according to the building type of the target building, query the pre-created cold load average cost index database to determine the cold load average cost index of the target building. Determine the air conditioning project investment of the target building according to the cold load and the cold load average cost index of the building. The estimation efficiency of the air conditioning project investment of the target building is improved. It is beneficial to be applied in the project proposal stage or the tender estimation stage to quickly estimate the air conditioning investment.

[0026] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0028] Figure 1 is a method for rapidly estimating air-conditioning investment control based on the cooling load of a building, shown according to an exemplary embodiment. Detailed implementation manners

[0029] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] It should be noted that all actions of obtaining signals, information, or data in this application are carried out on the premise of complying with the corresponding data protection regulations and policies of the country where it is located and obtaining authorization from the owner of the corresponding device.

[0031] A method for rapidly estimating air-conditioning investment control based on the cooling load of a building, which is applied to the project proposal stage or the tender estimate stage. The method specifically includes:

[0032] In step S102, determine the cooling load of the target building.

[0033] In this embodiment, when the target building is a civil building, the cooling load of the target building can be determined according to the existing technical manuals. When the target building is an industrial building, the cooling load of the industrial building can be determined according to the actual process equipment load or the plant load index.

[0034] In step S104, determine the building type of the target building.

[0035] In this embodiment, the building types include standard guest rooms, western restaurants, stores, large conference rooms, offices, hospital wards, hospital clean operating rooms, theaters, exhibition halls, display rooms, scientific research offices, apartments, and residences.

[0036] In step S106, according to the building type of the target building, query the pre-created cooling load average cost index database to determine the cooling load average cost index of the target building.

[0037] In this embodiment, a cooling load average cost index database can be pre-created, and in this cooling load average cost index database, the cooling load average cost index databases of each building type are recorded.

[0038] In step S108, the air-conditioning project investment of the target building is determined according to the cooling load and the average construction cost index of the building.

[0039] In this embodiment, the cooling load of the building and the average construction cost index are multiplied to obtain the air-conditioning project investment of the target building.

[0040] The technical solution of the present application pre-creates a database of average construction cost indexes for cooling loads, queries the pre-created database of average construction cost indexes for cooling loads according to the building type of the target building, and determines the average construction cost index for cooling loads of the target building. The air-conditioning project investment of the target building is determined according to the cooling load and the average construction cost index of the building. The estimation efficiency of the air-conditioning project investment of the target building is improved. It is beneficial to be applied in the project proposal stage or the tender estimation stage to quickly estimate the air-conditioning investment.

[0041] In some embodiments, in step S102, determining the cooling load of the building includes the following steps:

[0042] When the building is a civil building, the cooling load of the civil building is determined according to the cooling load estimation index list in the "Practical Heating and Air Conditioning Design Manual".

[0043] In this embodiment, the cooling load estimation index list is as follows:

[0044]

[0045]

[0046] In some embodiments, when the building is an industrial building, the cooling load of the industrial building is determined according to the actual process equipment load or the plant load index.

[0047] In this embodiment, first, the process equipment load is determined, including collecting equipment data: obtaining key parameters such as the rated power, usage time, and energy utilization rate of the process equipment. These parameters will directly affect the cooling load demand of the equipment.

[0048] The following formula is used to calculate the equipment cooling load:

[0049] Cooling load (kW) = Equipment power (kW) × Equipment usage time (hours) × Equipment efficiency ÷ Cooling water flow (m 3 / h) × Cooling water temperature difference (°C).

[0050] Substitute the collected equipment data into the formula to calculate the cooling load of each piece of equipment.

[0051] Secondly, calculate the plant load index, including the following:

[0052] Cooling load due to heat transfer through the building envelope: Considering the heat transfer coefficient, area of the building envelope such as exterior walls and roofs, and the temperature difference between indoors and outdoors, calculate the heat transferred through the building envelope. This part of the heat will increase the cooling load demand of the factory building.

[0053] Cooling load due to solar radiation: Considering the impact of solar radiation on the factory building, especially on the exterior windows and transparent building envelope parts. The heat from solar radiation will increase the cooling load demand of the factory building.

[0054] Cooling load due to internal heat sources: Considering the heat generated by heat sources such as personnel, lighting, and other equipment inside the factory building. These heat sources will increase the cooling load demand of the factory building.

[0055] In the third step, comprehensively calculate the cooling load. Superimpose the cooling load of process equipment, the cooling load due to heat transfer through the building envelope, the cooling load due to solar radiation, and the cooling load due to internal heat sources to obtain the total cooling load of the factory building.

[0056] Adjustment and verification: According to the actual situation of the factory building and the characteristics of load changes, adjust the calculated cooling load. Verify whether the calculation results are reasonable to ensure that the refrigeration requirements of the factory building are met.

[0057] In summary, determining the cooling load of industrial buildings based on the actual process equipment load or the load index of the factory building is a complex process that requires considering multiple factors and variables. By steps such as collecting equipment data, calculating the cooling load of equipment, considering the load index of the factory building, and comprehensively calculating the cooling load, a relatively accurate cooling load demand can be obtained. This will help ensure that the refrigeration system of industrial buildings can meet the actual needs, improve energy utilization efficiency and comfort.

[0058] In some embodiments, when the building is a civil building, according to the list of cooling load estimation indicators in the "Practical Heating, Ventilation, and Air Conditioning Design Handbook", determine the cooling load of the civil building, including the following steps:

[0059] Determine the floor area of the building.

[0060] According to the list of cooling load estimation indicators in the "Practical Heating, Ventilation, and Air Conditioning Design Handbook", determine the cooling load per unit area of the building.

[0061] According to the floor area and the cooling load per unit area, determine the cooling load of the building.

[0062] In this embodiment, assume that the floor area of the building is A = 1000 square meters, and the cooling load per unit area obtained from the handbook is q = 150 W / m 2 . Then the cooling load of the building is:

[0063] Q = 1000 m 2×150 W / m 2 = 150000 W = 150 kW.

[0064] Therefore, the cooling load of the building is 150 kW.

[0065] In some embodiments, the method further includes the following steps:

[0066] Determine the auxiliary verification air-conditioning project price of the target building according to the equipment price, auxiliary materials and equipment installation price of the target building, so as to conduct auxiliary verification on the air-conditioning project price.

[0067] In this embodiment, assume that the target building is an office building and the installation of a central air-conditioning system is required. The project goal is to assist in verifying the price reasonableness of the entire air-conditioning project based on equipment price, auxiliary material price, and equipment installation price.

[0068] The price composition analysis is as follows: The equipment price includes: The equipment price of the central air-conditioning system usually includes the costs of key components such as the host, terminal equipment (such as fan coil units, fresh air handling units, etc.), and control systems.

[0069] The auxiliary material price is as follows: The auxiliary materials include copper pipes, insulation materials, wires, refrigerants, brackets, etc. The costs of these materials depend on the quality and quantity of the selected materials, and the costs of high-end materials are higher. The equipment installation price includes labor costs, material transportation costs, taxes, etc. By implementing the above steps, it can be ensured that the selected central air-conditioning installation plan has a reasonable price, stable performance, and perfect after-sales service. At the same time, it can also provide strong basis and support for subsequent air-conditioning project price negotiation and contract signing. Determining and assisting in verifying the air-conditioning project price according to the equipment price, auxiliary materials and equipment installation price of the target building is a complex and meticulous process, which requires comprehensive consideration of various factors and comprehensive market research and professional design. By implementing the above steps, the rationality and feasibility of the selected plan can be ensured.

[0070] In some embodiments, the cooling load average cost index database is as follows:

[0071]

[0072] .

[0073] The technical solution of this application, aiming at the characteristics of the early stage of construction projects, gives full play to the integration advantages of the design specialty and the cost specialty, and estimates the air-conditioning investment in the early stage according to the cooling load. In the process of project investment estimation in the early stage, especially when using the plan for tender offer, the core technical ability of investment control can be reflected.

[0074] Other embodiments of the present disclosure will be readily apparent to those skilled in the art in view of the specification and practice of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0075] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A method for quickly estimating air conditioning investment control based on building air conditioning cooling load, characterized in that: Applied to the project proposal stage or bidding estimation stage, the method includes: Determine the cooling load of the target building; Determining the building type of the target building; According to the building type of the target building, querying a pre-created cooling load average cost index database to determine the cooling load average cost index of the target building; The air conditioning project investment of the target building is determined according to the cooling load of the building and the average cooling load cost index.

2. The method for quickly estimating air conditioning investment control based on building air conditioning cooling load according to claim 1 is characterized in that: The determining of the cooling load of the building comprises: When the building is a civil building, the cooling load of the civil building is determined according to the cooling load estimation index list in the "Practical Heating and Air Conditioning Design Manual".

3. The method for quickly estimating air conditioning investment control based on building air conditioning cooling load according to claim 1 is characterized in that: When the building is an industrial building, the cooling load of the industrial building is determined according to actual process equipment load or plant load index.

4. The method for quickly estimating air conditioning investment control based on building air conditioning cooling load according to claim 1 is characterized in that: If the building is a civil building, the cooling load of the civil building is determined according to the cooling load estimation index list in the "Practical Heating and Air Conditioning Design Manual", including: Determine the floor area of ​​the said building; Determine the cooling load per unit area of ​​the building according to the cooling load estimation index list in the "Practical Heating and Air Conditioning Design Manual"; The cooling load of the building is determined according to the building area and the cooling load per unit area.

5. The method for quickly estimating air conditioning investment control based on building air conditioning cooling load according to claim 4 is characterized in that: The cooling load estimation index list is as follows:

6. The method for quickly estimating air conditioning investment control based on building air conditioning cooling load according to claim 1, characterized in that: The method further comprises: The auxiliary verification air conditioning project price of the target building is determined based on the equipment price and the auxiliary materials and equipment installation price of the target building to perform auxiliary verification on the air conditioning project price.

7. The method for quickly estimating air conditioning investment control based on building air conditioning cooling load according to claim 1, characterized in that: The cooling load average cost index database is as follows:

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