Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14368
Title: Ice slurry storage system in district cooling application for air-conditioning
Authors: MOHAMMAD KAMAL HOSSAIN
Keywords: Ice slurry formation, Ice slurry storage, Energy extraction, Direct contact heat transfer, Thermal energy storage
Issue Date: 9-Nov-2004
Source: MOHAMMAD KAMAL HOSSAIN (2004-11-09). Ice slurry storage system in district cooling application for air-conditioning. ScholarBank@NUS Repository.
Abstract: In this study, generation of ice slurry through direct contact heat transfer, freezing of binary solution and the circulation of this ice slurry for space cooling application were investigated. Three types of spray nozzles: a shower spray, a fountain spray and nozzle from the bottom were used for ice slurry production. It was found that, for 3.025 kg of ice formation, time needed was about 35 min, 50 min and 30 min for shower spray, fountain and nozzle from the bottom, respectively. The effects of the mole fraction on binary solution freezing were examined. A change in the freezing point temperature from -20 C to -50 C was found for a small change in the mole fraction from 0.025 to 0.045. Overall heat transfer coefficient for the extraction of energy from the ice slurry was 1.43kW/m2 K, 1.18 kW/m2K and 1.086 kW/m2K for flow rates of 12 l/min, 10l/min and 8 l/min, respectively. The heat transfer capacity of the shell and tube heat exchanger was found to increase more than 35-40% compared with the single-phase fluid (chill water only).
URI: http://scholarbank.nus.edu.sg/handle/10635/14368
Appears in Collections:Master's Theses (Open)

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