Solar intelligent drying closed system and drying method thereof

Abstract

The invention discloses a solar intelligent drying closed system which comprises a PLC, a solar thermoelectric assembly, a solar water tank, a cooling tower, a drying room, an evaporator, a condenser, a radiator, a dehumidification fan, a water storage tank inverter, a grid-connected cabinet and a power cabinet. The solar thermoelectric assembly, the solar water tank, the cooling tower, the drying room, the evaporator, the condenser, the radiator, the dehumidification fan, the water storage tank inverter, the grid-connected cabinet and the power cabinet are connected with the PLC through cables. The solar thermoelectric assembly, the solar water tank, the evaporator, the condenser and the radiator are sequentially connected through pipelines. The solar water tank is also connected with the cooling tower through a pipeline; the evaporator, the condenser and the radiator are respectively arranged in the drying room; the dehumidification fan is arranged in the drying room and connected with one end of the evaporator through a pipeline. The solar thermoelectric assembly is sequentially connected with the inverter, the grid-connected cabinet and the power cabinet through cables. The closed dehumidification drying system is adopted, the heat recovery efficiency is high, the dehumidification rate is improved by 30% compared with a traditional open drying system, waste heat in the drying room is recycled, and energy is saved.

Description

technical field [0001] The invention relates to the field of cogeneration of heat and power, in particular to a solar intelligent drying closed system and a drying method thereof. Background technique [0002] At present, in industries such as agriculture, food, chemical industry, ceramics, medicine, mineral processing, pulp and paper, the advantages of heat pump drying technology and traditional drying technology, wood processing and other industries, drying is used in almost all production processes. The quality of the material depends on whether the temperature is well controlled and constant. [0003] At present, most of the dehydrated vegetable production still adopts the traditional drying method-the drying method of heating and drying in the drying room back to the dragon, and there are several problems in it: [0004] 1. Large energy consumption. In the traditional drying technology, the thermal efficiency is low, about 30%-60%. In the drying process, the heat of d...

AI Technical Summary

Problems solved by technology

In the traditional drying technology, the thermal efficiency is low, about 30%-60%. In the drying process, the heat of drying and evaporating water accounts for about 36%, and the loss of exhaust gas accounts for about 58%. Dry materials are taken away Heat and dryer heat losses account for 2% and 2% respectively, and thermal efficiency is only 40%

[0005] 2. The drying temperature is too high

With the traditional drying technology, the drying temperature is not easy to control. Generally, the drying temperature is around 75-90°C, while the dehydrated vegetable drying process requires that the drying temperature should not exceed 65°C.

[0006] 3. The drying time is too long

With the traditional drying technology, it takes at least 24 hours to process 1 ton of vegetables, and sometimes it takes longer to rework due to poor drying effect

[0007] At the same time, the original coal-fired barn uses coal as fuel for baking, and emits toxic gases such as sulfur monoxide and sulfur dioxide, which endanger human health. Other dust and smoke emitted by it cause a sharp drop in air cleanliness, and the stacking site seriously affects the surrounding environmental sanitation

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