Multilayer partition heat insulation ventilating low-temperature granary and temperature control method thereof

Abstract

The invention discloses a multilayer partition heat insulation ventilating low-temperature granary and a temperature control method thereof. Air between the top of the granary and a heat insulation layer is sealed to perform heat insulation, a partition heat insulation layer is added on an upper layer of a grain pile to lead a granary external cold source in to perform heat insulation, air between the upper layer of the grain pile and a heat insulation plate is at a low temperature, so that grains are stored at a low temperature or a quasi low temperature all year round; a control instrument performs automatic control to start and shut down an air source and an axial flow fan and open and close a sealing door and regulate the opening degree of the door, and accordingly the automatic ventilation temperature control of the granary is achieved. Cold air independently flows in a sealed mode in a sealed compartment and is not in direct contact with a grain layer, the moisture condensation is eliminated fundamentally, the quality of the stored grains is effectively maintained, the management risk and cost are reduced, and the goal of green grain storage is achieved.

Description

technical field [0001] The invention relates to the technical field of low-temperature storage of grain, in particular to a low-temperature grain storage silo with thermal insulation and ventilation on the upper layer of a grain pile and a method for controlling the temperature of grain storage. Background technique [0002] Low-temperature grain storage is a technologically advanced, economical and practical method of grain storage and preservation. Combining its own situation and geographical conditions, the grain storage industry has introduced and tested various types of low-temperature grain storage technology solutions, but they all have certain limitations: air-conditioners refrigerate low-temperature grain storage, simple construction and quick results, but the energy efficiency ratio low, and it is impossible to cool down the inside and part of the grain pile in time. Large-scale grain coolers refrigerate and store grain at low temperature. Although they can cool d...

AI Technical Summary

Problems solved by technology

Combining its own situation and geographical conditions, the grain storage industry has introduced and tested various types of low-temperature grain storage technology solutions, but they all have certain limitations: air-conditioners refrigerate low-temperature grain storage, simple construction and quick results, but the energy efficiency ratio low, and it is impossible to cool down the inside and part of the grain pile in time

Large-scale grain coolers refrigerate and store grain at low temperature. Although they can cool down the interior and local areas of grain piles in time, they consume too much energy, have high costs, and have the lowest energy efficiency ratio.

Solar cooling is the most energy-efficient, but its production cost is high and it is greatly affected by the climate; ground source low temperature can meet the storage requirements of conventional grain in summer, but the structure is huge, the amount of engineering is large, the one-time input cost is high, and it is limited by geographical conditions It is very large. Since the granary only needs a cold source but not a heat source, whether it can be recycled remains to be studied, which will affect its application

And their common defect is: the low-temperature air-conditioning directly contacts with the grain, which inevitably produces grain condensation

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