Design optimization method for ice storage air-conditioning system based on full life circle

An ice-storage air-conditioning technology with a full life cycle, which is applied in air-conditioning systems, heating and ventilation safety systems, heating and ventilation control systems, etc., and can solve problems such as saving operating costs for users, increasing initial investment costs, and limiting the use of ice storage , to achieve the effect of reducing constraints, reducing costs and improving economic benefits

Inactive Publication Date: 2016-11-23
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

In the ice storage air conditioning system, the selection of the capacity of the refrigeration unit and ice storage equipment is not only directly related to the initial investment of the user, but may also limit the formulation of the economic operation strategy of the ice storage air conditioning system
Because the ice storage air conditioner increases the initial investment cost compared with the conventional air conditioner, if it cannot achieve the effect of economic operation, it will not be able to save operating costs for users, which has great restrictions on the promotion and use of ice storage

Method used

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  • Design optimization method for ice storage air-conditioning system based on full life circle

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specific Embodiment

[0035] The target building of the study is the renovation of a shopping mall. The total commercial building area is 200,000 square meters, the air-conditioning area is 187,600 square meters, and the building height is 40.6 meters.

[0036] The electricity price of the building is divided into four periods: low valley period (00:00~8:00), parity period (12:00~20:00), peak period (8:00~12:00, 20:00~24: 00).

[0037] According to the characteristics of the building, the cooling load in a typical meteorological year is simulated, the operation model of the ice storage air-conditioning system is established, and the annual operating cost of the system is calculated. Combined with the initial investment cost of the equipment, the nonlinear objective function with the lowest cost in the whole life cycle of the system is obtained. The system design capacity is obtained through the connection of the objective function with the particle swarm optimization algorithm.

[0038] According t...

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Abstract

The invention discloses a design optimization method for an ice storage air-conditioning system based on a full life circle. The design optimization method comprises the following steps that an operation model of the ice storage air-conditioning system is established according to the characteristics of the ice storage air-conditioning system; the hourly loads of the ice storage air-conditioning system, obtained through TRNSYS simulation, in the operation periods in a typical meteorological year are taken as a basis; the design capacity and the cooling capacity per hour of a refrigeration host and an ice storage device are set; the annual operating cost of the ice storage air-conditioning system is represented; an objective function for representing the lowest full life circle cost of the ice storage air-conditioning system is established by combination with the initial cost of an ice storage air-conditioning device; and the model is solved by using an improved particle swarm optimization algorithm, so that the design capacity of a refrigerating unit and the ice storage device through which the full life cycle cost of the ice storage air-conditioning system is lowest is obtained, and can save the system costs for users.

Description

technical field [0001] The invention belongs to the scheme design in the technical field of energy saving, and in particular relates to a method for optimizing the design of an ice-storage air-conditioning system based on a full life cycle. Background technique [0002] In summer cooling conditions, the electricity load of the air conditioner is mainly concentrated in the peak period of electricity consumption during the day, and the large electricity consumption of the air conditioning system aggravates the load pressure on the power grid. The ice-storage air conditioner uses a cold storage device to store ice during the low-peak period of electricity consumption at night, and uses the ice stored at night for cooling during the peak period of electricity consumption during the day, which can achieve the effect of peak-shaving and valley-filling. On the one hand, the use of ice storage air conditioners can reduce the pressure on the power grid during the peak period of elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F5/00F24F11/00
CPCF24F5/0017F24F11/30F24F11/62Y02E60/14
Inventor 于军琪王胤钧赵安军黄健恒严龙山
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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