Transcritical carbon dioxide circulation and solution dehumidification air temperature and humidity regulation system

Abstract

The invention provides a transcritical carbon dioxide circulation and solution dehumidification air temperature and humidity regulation system, and belongs to the technical field of air conditioner system regulation. Heat cascade integration of a carbon dioxide transcritical refrigeration system and a liquid absorption type dehumidification system is achieved, the energy utilization rate is increased, and the energy consumption of an air conditioner refrigeration system is reduced. Fresh air is dehumidified and then cooled through a refrigeration system evaporator, independent step control of temperature and humidity is truly achieved, the cooling capacity of the evaporator is not consumed in the dehumidification process, and energy is saved to the maximum extent. A refrigeration unit inner cooler exchanges heat with desorption air, and the system performance is improved. Cooling water is used as the hot water resource used for life after being heated by the system in a cascade manner. A low-circulation-ration solution circulation system is adopted. By means of the unique structural design of an inner heat exchange type absorber and a regenerator, it is ensured that the heat transfer process and the mass transfer process are conducted in a container at the same time. By applying the nanometer technology to the inner surfaces of the absorber and the regenerator, the surface infiltration performance is improved, and the heat transfer and mass transfer effects are improved.

Description

technical field [0001] The invention relates to an air temperature and humidity adjustment system for transcritical carbon dioxide circulation and solution dehumidification, and belongs to the technical field of air conditioning system adjustment. Background technique [0002] The problem that the present invention intends to solve is by introducing CO 2 As a refrigerant transcritical refrigeration system and effectively combined with the absorption dehumidification system, it can achieve cascade utilization of energy within the entire system, improve the energy comprehensive utilization efficiency of the air conditioning refrigeration system or heat pump during use, and conventional refrigerants that are harmful to the environment to replace. Because of its high efficiency, stability, and low price, most of the commonly used air-conditioning refrigeration or heat pump systems currently use R134a, R22, etc. as refrigerants, but because these working fluids have high GWP (Gl...

AI Technical Summary

Problems solved by technology

[0008] 1. The traditional refrigerant is still used, and the condensation temperature is low, which leads to the low temperature of the regeneration solution partially heated by the condenser and insufficient regeneration capacity;

[0009] 2. Traditional refrigerants have adverse effects on the environment;

[0010] 3. The evaporator first cools the dehumidification solution, and then dehumidifies and cools the air at the same time through the contact between the solution and the air. It does not achieve independent control of temperature and humidity in the true sense, and the condensation heat of water in the dehumidification process has another Some of them are returned to the air, which does not maximize the effect of energy saving;

[0011] 4. Both the cooling of the absorption solution and the heating of the regeneration solution are completed in the external heat exchanger, and the heat and mass transfer are carried out independently. The solution in the absorber and regenerator has a significant temperature rise and fall with the absorption and analysis process, resulting in absorption in the middle and later stages of the reaction. The analysis ability drops significantly, which seriously affects the system performance

[0015] 1. The evaporator is still used to cool the dehumidification solution first, and then dehumidify and cool the air at the same time through the contact between the solution and the air. It has not achieved independent control of temperature and humidity in the true sense, and the condensation heat of moisture in the dehumidification process Some of them are returned to the air, which does not maximize the energy-saving effect;

[0016] 2. The heating process of the regenerating solution is completed in the external heat exchanger, and the heat and mass transfer are carried out independently. The heated solution then makes the air warm up through direct contact with the air. Decreased analytical ability in the middle and late stages

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