Off-network photovoltaic direct-drive ice storage air conditioning refrigerator system

Abstract

The invention relates to an off-network photovoltaic direct-drive ice storage air conditioning refrigerator system which primarily comprises a photovoltaic power generation mechanism, a refrigeratingmechanism and an ice storage air conditioning refrigerator mechanism. The photovoltaic power generation mechanism comprises a solar panel photovoltaic panel and a compressor controller. The refrigerating mechanism comprises a direct current compressor, a condenser and an evaporating coil, and the direct current compressor, the condenser and the evaporating coil are connected in series successivelyto form a refrigerating loop; the ice storage air conditioning refrigerator mechanism comprises a refrigerating chamber, an ice storage room, a small capacity direct current water pump and a heat exchanger. A soft start function is achieved by using the direct current inverter compressor, so that the system can be also started to operate successfully in a low irradiation condition. By adopting ice storage, fluctuant and periodical changes of solar energy can be solved, and meanwhile, a cooling capacity is provided at night for indoor cooling. The off-network photovoltaic direct-drive ice storage air conditioning refrigerator system does not use electric energy of a power grid, can meet the cold using demand in a remote tropical zone and demands on conservation and storage of food and drugs, and has far-reaching significance to utilization of renewable energy sources more effectively.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic utilization, and relates to photovoltaic power generation, refrigeration, ice storage technology and air conditioning, in particular to a photovoltaic ice storage air conditioning / refrigerator system with dynamic ice storage cooling. Background technique [0002] Solar energy has the advantages of green safety, convenient access, huge energy, no pollution, and good safety. Photovoltaic refrigeration converts solar energy into electrical energy, and then uses the electrical energy to drive a variable-speed DC compressor. The biggest advantage of using solar energy for cooling is good seasonal matching. The hotter the weather and the more cooling is needed, the greater the cooling capacity of the system. Using solar cooling in tropical areas can greatly meet people's cooling needs and reduce energy consumption. At the same time, solar energy is volatile and unstable, and is greatly affe...

AI Technical Summary

Problems solved by technology

[0004] In the existing research, the photovoltaic energy storage system is basically composed of photovoltaic cell components, controllers, batteries, inverters, and refrigeration equipment. Although its use can alleviate the limitation of photovoltaic refrigerators from solar radiation to a certain extent, it has many shortcomings. The main points are as follows: 1. The use of batteries will greatly increase the initial investment cost of the system. Compared with other components of the system, the life of batteries is much shorter, generally only two to three years, and later maintenance and replacement will also increase costs; 2. The production and use of batteries and the final recycling process may cause serious waste pollution to the environment

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