الفهرس | Only 14 pages are availabe for public view |
Abstract The application of ice slurry as secondary refrigerant is limited up to now. The main objective of this research is to study the thermal and hydro behavior of an ice slurry system during different operational processes of the ice slurry such as: Generation Process inside different types of ice slurry generators, Transportation process inside straight circular pipes, Melting process in heat exchanger and inside straight circular pipes, and Thermal storage process inside the thermal storage tank. Other objective is to compare the super-cooled water jet type as ice slurry generator with competitive scraped surface traditional ice slurry generator. A final objective is to study the thermal behavior and the hydro behavior of produced ice slurry in other ice slurry system components. A test rig with all the necessary measuring instrumentation has been set up to carry out the different kinds of the experiments performed. The generation process focus on the influence of ice slurry generator parameters on the prevention of ice scaling in tested ice slurry generators at different conditions. The transportation process of ice slurry in circular straight pipes is thoroughly studied and investigated. Pressure drops, and friction factors, and flow coefficients across flow meters are evaluated. The melting process of ice slurry in artificial heat exchanger is thoroughly investigated in the present work. Heat transfer coefficients and superheating were measured during ice slurry melting process experiments in a tube-in-tube heat transfer electrical heating coil. Historical pictures were taken during the thermal storage experiments demonstrate the developing of the ice layers inside the thermal storage tank of cylindrical shape. A comparative CFD Study for two different type of ice slurry generators is presented and demonstrated using commercial CFD Package. A comparison between the experimental work results, and the CFD results obtained, was performed to validate the tested numerical model and the tested ice slurry generator of super-cooled water jet type. The conclusions from the different experiments are summarized to give the integral conclusions. |