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Study on the Performance Testing of the Closed Ice Thermal Energy Storage System using Screw Capsules  

Kim, Kyung-Hwan (Division of Facilities, Changwon National University)
Publication Information
Journal of the Korean Solar Energy Society / v.26, no.4, 2006 , pp. 39-45 More about this Journal
Abstract
The decrease in the summer peak electric load in our country is very important. The government has arranged and implemented a lot of support policies and statutes to decrease the peak electric load. And the ice thermal energy storage system is known as one of the alternatives. The purpose of this paper is to evaluate the efficiency and thermal characteristics of the closed ice thermal energy storage system using screw capsules. The measured thermal energy storage density is about 18.4 USRT-h/m3 (=232.9 MJ/m3), which is higher than 13.0 USRT-h/m3 (=164.6 MJ/m3), a low criterion of normal performance. And The efficiency of the discharging process and the total energy utilization is 96.2% and 2028.4 kcal/kWh respectively.
Keywords
Closed ice thermal energy storage; Thermal energy storage density; Efficiency of total energy utilization;
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