Greenhouse heat-storage type solar hot-wind drying device for grains

Abstract

A greenhouse heat-storage type solar hot-wind drying device for grains belongs to a utilization technology of renewable energy. An underground heat storage tank is arranged under the ground surface inside a greenhouse drying room; a solar-air heat collector is arranged at the upper part outside the greenhouse drying room; an automatic controller, a blower, a hot wind discharge pipe, a hot wind delivery pipe and a cold air returning pipe are arranged in the greenhouse drying room; two ends of the hot wind delivery pipe with a suction fan and a third valve are respectively communicated with thesolar-air heat collector and the underground heat storage tank; two ends of the cold air returning pipe with a first valve are respectively connected on the solar-air heat collector and the underground heat storage tank; two ends of the hot wind discharge pipe with a second valve are respectively communicated with the hot wind delivery pipe and the cold air returning pipe; an exhaust outlet is arranged on the wall of the greenhouse drying room; and the automatic controller is connected with the suction fan, the blower, the first valve, the second valve and the third valve respectively by leads. The greenhouse heat-storage type solar hot-wind drying device fully utilizes solar energy as drying energy and has the characteristics of being simple in structure, low in operation cost and excellent in environment-friendly effect.

Description

Technical field [0001] The invention belongs to renewable energy utilization technology, and mainly relates to a device that uses solar energy in combination with a greenhouse to undertake and complete crop drying operations. Background technique [0002] Grain drying is an important process in the processing of agricultural products. The purpose is to remove excess moisture in the grains to facilitate product processing, transportation, storage and use. The use of conventional dry grains and other agricultural products requires a large investment and consumes a large amount of energy such as coal and oil, which increases the cost of agricultural products and causes environmental pollution to varying degrees. The drying temperature required for cereals and general agricultural products is relatively low, about 40-55℃, which matches the low-temperature heat utilization in the field of solar thermal utilization. Using artificial solar energy to dry the cereals can shorten the dryin...

AI Technical Summary

Problems solved by technology

The use of conventional dry grains and other agricultural products requires a large investment and consumes a large amount of energy such as coal and fuel oil, which increases the cost of agricultural products and causes different degrees of environmental pollution.

The drying temperature required for grain and general agricultural products is relatively low, about 40-55°C, which matches the low-temperature heat utilization in the field of solar thermal utilization. Using artificial collection of solar energy to dry grain can shorten the drying cycle and improve product quality, but At present, this technology has not been developed and utilized, and it is still blank

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