An ice slurry generator for was developed for the experimental study of its heat transfer characteristics. One of the main characteristic of ice slurry is that it can be pumped as any liquid. The ice slurry generator is an evaporator, with mechanical heat transfer enhancement, by surface scraping. The dependence of several parameters on heat exchanger performance was established. They included: mass flow rate, scraped rotational velocity, surface temperature, solution operating temperature. Single and two-phase flow was studied. Aqueous ethanol solutions, of different concentrations, were used. Ice slurry was produced on a continuous basis. The experimental apparatus consisted of the heat exchanger itself, an on-line ice mass fraction measurement device, a helicoidal positive displacement variable flow rate pump, an electrical heater, the data acquisition system and a R22 condensing unit. The ice slurry was pumped continuously on a closed circuit, providing a homogeneous fluid, as no accumulation of ice was possible. Ice slurry systems have the potential of significant reduction on capital and maintenance costs, when compared to traditional technologies, static or dynamic, of ice thermoaccumulation.