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针对目前常用的电热、热氨和热水除霜方法导致冷库温度波动、耗能高的问题 ,提出用超声波除霜的方法。以交换面积为 4 0 m2 的冷风机为样机进行了试验研究 ,结果表明 ,在冷风机上采用超声波技术除霜是可行的 ,能达到连续运行不停机除霜的效果 ,并达到稳定库温、节约能源的目的。采用横波除霜的效果优于纵波 ,采用纵、横联合的方法可以获得最优的除霜效果 ,并且可以根据冷风机交换面积的大小 ,采用双声源或多声源纵横联合除霜技术。
In view of the current commonly used electric, hot ammonia and hot water defrosting methods lead to temperature fluctuations in cold storage, high energy consumption, the proposed method of defrosting with ultrasound. The experimental results show that it is feasible to use the ultrasonic technology on the chiller to achieve the effect of continuous operation without stopping the defrosting and to reach the stable temperature and save The purpose of energy. The use of shear wave defrosting is better than the longitudinal wave, the use of vertical and horizontal joint method can get the best defrost effect, and according to the size of the exchange area of the chiller, dual sound source or multi-source vertical and horizontal joint defrosting technology.