Method for predicting heat preservation period of heat preservation box

Abstract

The invention discloses a method for predicting heat preservation period of a heat preservation box. The method comprises the following steps that goods are put into a refrigeration area of the heat preservation box, physical property parameters of the goods are obtained, and the time for putting the goods is recorded; temperature of the refrigeration area in the heat preservation box is adjustedaccording to a set value through heat convection of a hold-over plate arranged in a cold storage area; and in a preset temperature range, a heat exchange coupling model of the refrigeration area is established, the temperature of the goods is calculated, and the effective heat preservation period of the goods is calculated according to total quantity of heat loads generated by the heat preservation box in the unit time and total quantity of remaining solid coolants in the hold-over plate. According to the method, on-line prediction of the heat preservation period of the cold storage and heat preservation transport box is realized, the goods transport quality can be guaranteed, and popularization and application of the cold storage and heat preservation transport box can be promoted.

Description

technical field [0001] The invention relates to the field of cold storage transportation, in particular to a method for predicting the insulation period of an incubator. Background technique [0002] In cold chain transportation, temperature maintenance is the key to ensure the quality of goods transportation. At present, mechanical refrigeration and cold storage plate refrigeration are the main temperature maintenance methods widely used in cold chain transportation. Mechanical refrigeration is one of the traditional refrigeration methods. It mainly uses the compressor to compress the refrigerant, and then condenses the refrigerant through the condenser and sends it to the evaporator. Cool the air inside. Mechanical refrigeration has the characteristics of stable and mature technology, but the purchase and use costs are relatively high. The cold storage refrigeration method can use peak and valley electricity for cold storage, which can achieve the purpose of energy savi...

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Problems solved by technology

In the existing models, the temperature change of the air in the insulated transport box is mainly predicted by calculating the heat load of the insulated transport box and the environmental control strategy (CN201710290612.2, CN201410552844.7), but there is still a lack of calculation of the temperature of the cargo in combination with the ambient air change , an online prediction method for the insulation period of cold storage insulated transport boxes

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