Study of Total-Freeze-Up Ice Storage Tank

• Main Authors: Chun-Chia Hsu, 許君嘉
• Other Authors: Hsiao-Kang Ma
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/43632406968085883105

碩士 === 國立臺灣大學 === 機械工程學研究所 === 98 === The study builds a numerical model of a round- type horizontal- twined total-freeze-up Ice Storage Tank (IST). This model tool can be use to analysis the relationship of the IST‘s discharge heat transfer characteristic and heat exchange effectiveness (ε), the combined parameter of total discharge heat coefficient (UAC), the discharge heat transfer characteristic effective of changing IST‘s parameters which include IST‘s brine flow rate (Vb), total number of coils inside the tank (N) and thermal conductivity of coil‘s material (Km). The numerical model can be further analysis of the imperfect of present IST‘s standard and proposing a conception of using the discharge heat exchange effectiveness (ε) to build a new IST‘s approach. The major contribution of this IST‘s approach could solve the existing problem of testing feasibility. Further more, the study use the new IST‘s approach to examine 「the fixed load」, 「the progressively increasing load」and 「the progressively decreasing load」. These three type of load have the same total load. The numerical result shows that IST‘s capacity have to increase 1.18 times, 1.32 times and unchanged separately. The study can use as a design information to help personnel in the air conditioning field to understand the IST‘s characteristic for HVAC system.