What is the working process of air energy drying equipment?

What is the working process of air energy drying equipment?

Generally speaking, the air energy drying equipment means that the mouth water temperature and the outlet air temperature can reachThe heat pump above 80 ℃, and the heat pump with the outlet water temperature reaching 65 ℃ is called medium temperature heat pump or medium air energy drying equipment. The emergence of air energy drying equipment has greatly expanded the application field of heat pump. Can be directly recovered 20~55 degrees of low-grade residual (waste) heat resources, the production of 65~95 degrees of hot water for heating, crude oil heating, industrial insulation, production heat and other fields. It can replace oil, gas and coal-fired boilers, can save a lot of primary energy, and has very good energy saving and environmental protection benefits.

with the output temperature belowCompared with the 60 ℃ air source heat pump technology, the heating temperature of the air energy drying equipment exceeds 60 ℃ without changing the operating environment of the equipment, maintaining a high operating efficiency and stable operating state. In general, the following key technical issues need to be addressed.

1. The choice of compressor: heat pump equipment commonly used in the compressor type is mainly screw compressor, fully enclosed scroll compressor and semi-enclosed piston compressor. After comparing the working characteristics of different types of compressors, the high temperature air source heat pump equipment generally uses a fully enclosed scroll compressor.

2, the choice of working medium: in order to ensure that the air can be used under stable and allowable working pressure, the working medium adopts special refrigerant, which has high heat exchange efficiency, no pollution to the environment and no damage to the ozone layer.

3. Fluorine circuit system control optimization: to ensure long-term stable high-temperature operation and service life of the entire unit, and automatically adjust the operating status and components of the high-temperature air heat pump equipment according to the ambient temperature and evaporation temperature.

air can drying equipment workflow:

(1) Compression process: The low-temperature and low-pressure refrigerant gas is compressed into high-temperature and high-pressure gas by the compressor. At this time, the work done by the compressor is converted into the internal energy of the refrigerant gas to increase its temperature and pressure, which is called an adiabatic process in thermodynamics.

(2) Condensation process: The high-temperature and high-pressure refrigerant gas from the compressor flows through the condenser, uses wind or water to continuously release heat to the outside, and condenses into a medium-temperature and high-pressure refrigerant liquid. During the liquefaction process, the temperature of the refrigerant decreases, but the pressure remains the same. This is called an isobaric process in thermodynamics.

(3) Throttling process: The medium-temperature and high-pressure refrigerant liquid from the condenser is throttled by the throttling device to become a low-temperature and low-pressure refrigerant liquid. Thermodynamically, it is called an isenthalpic process.

(4) Evaporation process: The low-temperature and low-pressure refrigerant liquid from the throttling device flows through the evaporator, continuously absorbs heat through wind or water, enters the room, and evaporates into low-temperature and low-pressure refrigerant gas. The absorbed heat becomes latent heat of the refrigerant. Although the temperature has risen slightly, the internal energy has increased a lot. Because the pressure changes very little, it is called an isobaric process in thermodynamics.