An air-conditioning subcooler, method and device for adjusting the subcooling degree of an air-conditioning system

Abstract

The invention discloses an air conditioner subcooler and a method and device for adjusting the subcooling degree of an air conditioner system. The air conditioner subcooler includes: a cold end heat exchanger 11 connected to the outlet of the condenser, and the surface of the cold end heat exchanger 11 is connected to the condenser. The cold surface of the semiconductor cooling sheet 10 is connected; one end of the hot end radiator 12 is placed in the external environment, and the other end is connected to the hot surface of the semiconductor cooling sheet 10 . The methods for adjusting the subcooling degree of the air conditioning system include: S1: Obtain the current control voltage and the number of semiconductor refrigeration chips currently in operation; S2: Determine whether the subcooling degree of the outdoor unit refrigerant reaches the preset temperature, and if so, execute S3; otherwise, change the control voltage Execute S1 after counting the working quantity of the semiconductor refrigeration sheet; S3: Determine whether the temperature of the air inlet and outlet of the indoor unit reaches the preset temperature, if the air conditioning system continues to operate in the current state; otherwise, adjust the supercooling degree and execute S2. The invention increases the subcooling degree at the outlet of the condenser by 1.5°C, and the system heating energy efficiency ratio COP is increased by 6.5%.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioning subcooler, a method and a device for adjusting the subcooling degree of an air conditioning system. Background technique [0002] The refrigeration industry is one of the large energy-consuming industries in the national economy, and the energy saving of refrigeration devices has also become an important link in the country's energy conservation and emission reduction work. The cooling capacity of the refrigeration system has a lot to do with the subcooling degree of the refrigerant before throttling. The greater the subcooling degree, the greater the unit cooling capacity of the refrigeration cycle, and the greater the refrigerant flow rate of the expansion valve, thereby increasing the cooling capacity and refrigeration coefficient at the same time. [0003] The subcooling degree of the air conditioning system affects the efficiency and cooling cap...

AI Technical Summary

Problems solved by technology

The traditional way to increase the subcooling of the system is to increase the condenser and heat transfer area, which costs and uses more materials, resulting in higher system cost and volume

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