Grain mass and heat transfer and condensation parameter detection device and method

Abstract

The invention discloses a grain mass and heat transfer and condensation parameter detection device and method. The grain mass and heat transfer and condensation parameter detection device comprises acuboid simulation experiment bin, wherein each wall surface of the simulation experiment bin is of an inner layer-outer layer structure, and the inner layers of the wall surfaces define a cuboid cavity; the two opposite bin walls of the simulation experiment bin are connected with a cold source and a heat source respectively; a plurality of sampling ports and wall surface temperature detection ports are arranged on the cold and hot wall surfaces of the simulation experiment bin separately; and a cube of an external heating source can be placed in the center of the inner cavity. The detection device and method can be used for detecting the grain damp heat transfer rule and the condensation critical parameter and disclosing a coupling relation of the mass and heat transfer phenomenon of thegrain pile and micro-environment factors, and has important significance for guiding and improving the grain storage conditions, preventing condensation and reducing grain loss.

Description

technical field [0001] The invention relates to the field of grain storage, in particular to a grain quality heat transfer detection device and a method for measuring critical parameters of dew condensation in grain piles. Background technique [0002] my country currently has about 150 million tons of grain reserves, and the safety of grain reserves is a national strategic requirement. According to statistics, the annual loss rate of my country's national grain reserves is about 0.5% to 1%. If the dynamic amount of national grain reserves is 150 million tons, the loss will reach 750,000 to 1.5 million tons; the annual loss rate of national farmers' grain reserves is about 8 %, the amount of grain loss is as high as 20 million tons. Grain condensation and heat and mildew are the main reasons for grain loss. Among them, grain condensation has always been a difficult problem to overcome. [0003] At present, there are few domestic studies on the critical parameters of dew cond...

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Problems solved by technology

[0003] At present, there are few domestic studies on the critical parameters of dew condensation in grain storage. The basic research involving multi-field coupling in the field of grain storage lags behind the actual application and demand, and the mathematical model simulation based solely on abstract assumptions is difficult to guide the actual application demand.

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