¨ç The present invention can uniformize weight of PCM by rapidly cooling PCM to a wanted temperature and preventing a precipitation phenomenon, and accumulate cold by recovering the used PCM.¨è The present invention can always supply PCM of a fixed temperature.
¨è The present invention can uniformize weight of PCM by rapidly cooling PCM to a wanted temperature and preventing a precipitation phenomenon, and accumulate cold by recovering the used PCM.¨è The present invention can always supply PCM of a fixed temperature.