Abstract
Dynamic simulation of a Brayton cryocooler is presented as a partial effort of a Korean governmental project to develop 1∼3 km HTS cable systems at transmission level in Jeju Island. Thermodynamic design of a 10 kW Brayton cryocooler was completed, and a prototype construction is underway with a basis of steady-state operation. This study is the next step to investigate the transient behavior of cryocooler for two purposes. The first is to simulate and design the cool-down process after scheduled or unscheduled stoppage. The second is to predict the transient behavior following the variation of external conditions such as cryogenic load or outdoor temperature. The detailed specifications of key components, including plate-fin heat exchangers and cryogenic turbo-expanders are incorporated into a commercial software (Aspen HYSYS) to estimate the temporal change of temperature and flow rate over the cryocooler. An initial cool-down scenario and some examples on daily variation of cryocooler are presented and discussed, aiming at stable control schemes of a long cable system.
Chang, Ho-Myung;
Park, Chan Woo;
[1]
Yang, Hyung Suk;
Hwang, Si Dole
[2]
- Hong Ik University, Department of Mechanical Engineering, Seoul, 121-791 (Korea, Republic of)
- KEPCO Research Institute, Daejeon, 305-760 (Korea, Republic of)
Citation Formats
Chang, Ho-Myung, Park, Chan Woo, Yang, Hyung Suk, and Hwang, Si Dole.
Dynamic simulation of 10 kW Brayton cryocooler for HTS cable.
United States: N. p.,
2014.
Web.
doi:10.1063/1.4860922.
Chang, Ho-Myung, Park, Chan Woo, Yang, Hyung Suk, & Hwang, Si Dole.
Dynamic simulation of 10 kW Brayton cryocooler for HTS cable.
United States.
https://doi.org/10.1063/1.4860922
Chang, Ho-Myung, Park, Chan Woo, Yang, Hyung Suk, and Hwang, Si Dole.
2014.
"Dynamic simulation of 10 kW Brayton cryocooler for HTS cable."
United States.
https://doi.org/10.1063/1.4860922.
@misc{etde_22262760,
title = {Dynamic simulation of 10 kW Brayton cryocooler for HTS cable}
author = {Chang, Ho-Myung, Park, Chan Woo, Yang, Hyung Suk, and Hwang, Si Dole}
abstractNote = {Dynamic simulation of a Brayton cryocooler is presented as a partial effort of a Korean governmental project to develop 1∼3 km HTS cable systems at transmission level in Jeju Island. Thermodynamic design of a 10 kW Brayton cryocooler was completed, and a prototype construction is underway with a basis of steady-state operation. This study is the next step to investigate the transient behavior of cryocooler for two purposes. The first is to simulate and design the cool-down process after scheduled or unscheduled stoppage. The second is to predict the transient behavior following the variation of external conditions such as cryogenic load or outdoor temperature. The detailed specifications of key components, including plate-fin heat exchangers and cryogenic turbo-expanders are incorporated into a commercial software (Aspen HYSYS) to estimate the temporal change of temperature and flow rate over the cryocooler. An initial cool-down scenario and some examples on daily variation of cryocooler are presented and discussed, aiming at stable control schemes of a long cable system.}
doi = {10.1063/1.4860922}
journal = []
issue = {1}
volume = {1573}
journal type = {AC}
place = {United States}
year = {2014}
month = {Jan}
}
title = {Dynamic simulation of 10 kW Brayton cryocooler for HTS cable}
author = {Chang, Ho-Myung, Park, Chan Woo, Yang, Hyung Suk, and Hwang, Si Dole}
abstractNote = {Dynamic simulation of a Brayton cryocooler is presented as a partial effort of a Korean governmental project to develop 1∼3 km HTS cable systems at transmission level in Jeju Island. Thermodynamic design of a 10 kW Brayton cryocooler was completed, and a prototype construction is underway with a basis of steady-state operation. This study is the next step to investigate the transient behavior of cryocooler for two purposes. The first is to simulate and design the cool-down process after scheduled or unscheduled stoppage. The second is to predict the transient behavior following the variation of external conditions such as cryogenic load or outdoor temperature. The detailed specifications of key components, including plate-fin heat exchangers and cryogenic turbo-expanders are incorporated into a commercial software (Aspen HYSYS) to estimate the temporal change of temperature and flow rate over the cryocooler. An initial cool-down scenario and some examples on daily variation of cryocooler are presented and discussed, aiming at stable control schemes of a long cable system.}
doi = {10.1063/1.4860922}
journal = []
issue = {1}
volume = {1573}
journal type = {AC}
place = {United States}
year = {2014}
month = {Jan}
}