Heat transfer performance of a newly developed ice slurry generator: A comparative study

An advanced super-cooling type heat exchanger is presented as an ice slurry generator. It reduces investment costs and it can be operated with high heat transfer rates and at less power consumption compared with traditional heat exchangers of super-cooling type of shell and tube design, and of scraped surface type, which are commonly used up to now. The different ice slurry generation methods were reviewed. A super-cooling ice slurry generator type was experimentally tested and compared with a traditional scraped surface type. Some interesting advantages were observed in case of super-cooling type, developed in this paper. The stable operating range was slightly smaller compared with the traditional scraped surface type, and heat transfer coefficients were somewhat smaller due to smaller amount of generated ice fraction as common super-cooling type. It is supposed that higher velocity of the super-cooled water jets than reported will lead to increase the produced ice concentration.