Speaker
Description
The cold box for the cryogenic liquefaction process of the liquid air energy storage (LAES) device is a facility that produces cryogenic liquid air by introducing gas at high pressure/room temperature. Inside the cold box, various devices such as heat exchangers, cryogenic valves, filters, expansion turbines, and phase separators are installed, and each component must be optimally designed for high efficiency operation. Especially, expansion turbines are high speed rotating machines and require components such as filters and expansion joints to prevent mechanical damages. The various internal components of cold boxes are connected by process piping, and the cold box piping system must have sufficient structural strength to withstand high pressure and minimizes pressure loss of working fluid, as well as considering thermal deformation of the piping system due to cool-down operation. In this study, thermal and structural analysis were performed to design a process piping system for the cold box with a liquefaction capacity of 10 tons/day. Through analysis, the structural robustness of the pipe as well as the force / moment acting on the nozzle of the heat exchanger and the pipe support were evaluated. Additionally, pressure losses in the pipe were evaluated. Finally the detailed design of a cold box for the LAES was completed.
Acknowledgment : This work was supported by a grant of the Basic Research Program funded by the Korea Institute of Machinery and Materials (grant number : NK249E).
| Submitters Country | Republic of Korea |
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