Cool storage air-conditioning system using air energy

Abstract

The invention discloses a cool storage air-conditioning system using air energy. The cool storage air-conditioning system using the air energy comprises a cool storage system and a radiation cooling system, the cold storage system uses the air energy to store cold, and the radiation cooling system cools the use of the cold source stored in the cold storage system. According to the cool storage air-conditioning system using the air energy, a conventional cold water unit is omitted, low-grade energy sources such as energy in the air are used, and high-grade energy sources such as electricity aresaved, so that electricity costs of users are saved and energy-saving requirements under the international trend are met. Because the radiation cooling system is used on the user side, and the characteristic of uniform cooling is achieved, for users, the thermal comfort is also high; in addition, unavoidable noise for an air conditioner, a fan-coil unit, an inducer unit and the like cannot be produced; and moreover, bacteria can be eliminated due to the dried surface of a radiation plate, so that sanitary conditions are improved.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an air energy cold storage air conditioning system. Background technique [0002] With the improvement of people's living standards, the use of air conditioners is becoming more and more popular. However, due to the high energy consumption of air conditioners, its centralized use will cause the gap between peak and valley electricity consumption in cities to increase. In order to shave peaks and fill valleys of the power grid, the Chinese government has implemented different electricity price policies for power supply peaks and valleys, and uses cold storage technology for power demand management to achieve peak shaving and valley filling. [0003] At present, there are many cold storage methods used in air conditioners, which can be divided into sensible heat storage and latent heat storage according to energy storage methods; according to cold storage media, they can be d...

AI Technical Summary

Problems solved by technology

However, due to the low cold storage density of water, only 8°C temperature difference can be used, so the cold storage capacity is low

At the same time, water cold storage has the following disadvantages: the system occupies a large area, which is not conducive to the intensive use of land; the cold loss is large during the cold storage process; waterproof and heat preservation is more complicated, which is not conducive to popularization and use

However, ice storage has the following disadvantages: the evaporation temperature of the refrigeration unit decreases, which reduces the performance coefficient of the compressor; the equipment and pipelines of the air conditioning system are more complicated than the water storage air conditioning system, and the cost is higher, which is not conducive to popularization and use; using ice storage to supply air at low temperature It will cause the moisture in the air to condense, and the air volume sent to the air-conditioning area will be insufficient and the air will flow backward.

Moreover, from the perspective of energy saving, ice storage is not an energy-saving solution, but can only reduce operating costs and adjust the load of the power grid, and does not achieve energy saving.

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