Heat pump drying equipment has the following advantages for drying nuts, beans and other products:

(1) Improve labor intensity, such as improving the automation of drying equipment.

(2) Eliminate environmental pollution such as dust collection, noise reduction, etc.

(3) Reduce thermal energy consumption. Such as heat recovery and utilization, improve the thermal insulation effect of equipment and so on.

(4) The drying process can be customized. In order to meet the drying characteristics and requirements of the material, the hot air can be customized (temperature, flow rate and relative humidity), for example, a single temperature zone can be changed to a multi-temperature zone to improve product quality and drying efficiency.

(5) Serialization and high thermal efficiency. At present, domestic drying equipment is mainly small and medium-sized, and it is gradually developing towards serialization and high thermal efficiency. Heat pump dryers are unanimously favored by the industry. As a new type of drying equipment, they have the advantages of less heat energy consumption and low operating costs.

Process composition:

The heat pump dryer is mainly composed of four parts: evaporator (outer unit), compressor, condenser (inner unit) and expansion valve. The heat is released in the indoor drying room) → throttling → re-evaporation thermodynamic cycle process, so that the heat in the external low temperature environment is transferred to the drying room, and the refrigerant circulates in the system under the action of the compressor.

It completes the gaseous boosting and heating process in the compressor (the temperature is as high as 100°C), it enters the inner unit and releases high temperature heat to heat the air in the drying room, and at the same time, it is cooled and converted into liquid state. When it runs to the outer unit , Through throttling and depressurization, the liquid quickly absorbs heat and evaporates into a gaseous state again, and the temperature can be lowered to 15℃~-15℃. At this time, the air around the heat absorber will continuously transfer heat to the refrigerant.

The heating efficiency of the high-temperature heat pump dryer is much higher than that of other heating equipment. It can be seen that using a high-temperature heat pump dryer as a drying device can save energy, and at the same time reduce the emissions of pollutants such as carbon dioxide, and achieve the effect of energy saving and emission reduction. .