Drying system with combination of hot air drying and cold air drying

Abstract

The invention relates to a drying system with combination of hot air drying and cold air drying. The drying system comprises a solar greenhouse (1), an air condenser (2), a water-bath deduster (9), a heat source, an air heater (4), a smoke refrigerating device, an air cooler (8), pipes, valves and a fan, wherein the various devices are connected to one another through the pipes; the valves are arranged on the pipes; the solar greenhouse (1) is a sealed structure; the air condenser (2) is a cylindrical structure; the heat source is connected with the air heater (4); an air inlet of the solar greenhouse (1), an air outlet of the air condenser (2) and an outlet of the air heater (4) communicate with one another via the pipes; an air outlet of the solar greenhouse (1) communicates with an air box (2.1) above the air condenser (2) via the pipe; and a smoke outlet of the air heater (4) is connected with the smoke refrigerating device. The drying system can be used for different materials, and can be used for drying the materials in a mode of combining solar energy, hot air and cold air completely, multistage utilization of energy is realized, and thermal efficiency of drying is improved.

Description

technical field [0001] The invention belongs to the drying technology utilizing solar energy, and specifically refers to a drying system combining hot air drying and cold air drying. Background technique [0002] In recent years, the global energy crisis and the resulting energy "scramble" are gradually escalating. At the same time, the current energy structure dominated by conventional energy such as coal, oil, and natural gas is still going on. The exhaust gas is discharged into the atmosphere, which not only wastes energy, but also pollutes the environment. For this reason, the development of new energy has been vigorously developed in recent years, but the focus is on industrial projects and cities, and agriculture is only used in solar greenhouses, and little progress has been made in other aspects. [0003] Solar energy also has a vast space in rural areas, and the quality of life of farmers needs to be greatly improved, and farmers need to get rich quickly. There ar...

AI Technical Summary

Problems solved by technology

Drying these agricultural products, aquatic products, and wastes in the production process of agriculture and forestry can reduce the storage and transportation costs of these materials and commodities and improve the economic benefits of rural areas. However, if traditional energy is used, not only the cost is high, but also the thermal efficiency is low and the environment is polluted.

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