The liquid refrigerant defrost process is continuous during the defrost. The temperature fluctuation of thecold storage is small and the additional energy consumption isn’t needed. In order to solve the difficulty ofmeasuring the frost mass and frost thickness in the experiment process, and to investigate the law of the frostformation, a thermodynamic model of the duplex air cooler was established. The results showed that whenthe environment temperature was 25°C and the cold storage temperature was -20°C, the part of the pipebehind the 4.5m didn't frost when the frost time was within 48h. This is because the air relative humidity ofthe rear row pipe was low and the frost temperature difference increased, it was hard to frost, which wasbasically the same as the experimental results.
展开▼