Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Joon-Hyuk Lee"'
Publikováno v:
Case Studies in Thermal Engineering, Vol 61, Iss , Pp 104864- (2024)
Mixed refrigerant (MR) Cascade Refrigeration Systems are widely employed in industries requiring both extremely low temperatures and large cooling capacity, such as semiconductors and displays. The composition of the MR has a significant impact on th
Externí odkaz:
https://doaj.org/article/b3802e5b8f6a4fe58d7eeca829a2ccaf
Autor:
Joon-Hyuk Lee, Jung-Hoon Kim, In-Young Heo, Jung-In Yoon, Chang-Hyo Son, Jung-Wook Nam, Hyun Joong Kim, Seung-Yoon Cha, Sung-Hoon Seol
Publikováno v:
Case Studies in Thermal Engineering, Vol 59, Iss , Pp 104461- (2024)
The refrigerants used to cool the heat generated in semiconductor production are Freons, which are now subject to regulation because of their high ozone depletion potential (ODP) and global warming potential (GWP). Therefore, R-744 is considered an e
Externí odkaz:
https://doaj.org/article/960933655c874ff6896aaaa364c6df39
Publikováno v:
Journal of Sensor and Actuator Networks, Vol 13, Iss 5, p 64 (2024)
The optimal functionality and dependability of mechanical systems are important for the sustained productivity and operational reliability of industrial machinery, and have a direct impact on its longevity and profitability. Therefore, the failure of
Externí odkaz:
https://doaj.org/article/46cfd94e314b49029b84fc18c015a826
Publikováno v:
Energies, Vol 17, Iss 20, p 5144 (2024)
This study investigates the implementation of a cryogenic chiller utilizing a mixed-refrigerant cascade refrigeration cycle (MRCRC). In this setup, R-404A is employed in the high-temperature circuit (HTC), while a mixture of refrigerants is utilized
Externí odkaz:
https://doaj.org/article/e1210ffd03a249d09075adbfd245d772
Publikováno v:
Energies, Vol 17, Iss 19, p 4969 (2024)
Recent advancements in cryogenic etching, characterized by high aspect ratios and etching rates, address the growing demand for enhanced performance and reduced power consumption in electronics. To precisely maintain the temperature under high loads,
Externí odkaz:
https://doaj.org/article/51d31705c19d4e59864cbfd10b748071
Autor:
Min-Ju Jeon, Joon-Hyuk Lee
Publikováno v:
Energies, Vol 17, Iss 18, p 4708 (2024)
The cascade refrigeration systems (CRS) used in hypermarkets and supermarkets, which are used by many people, have been employing R744 for the low-temperature cycle (LTC) and R404A for the high-temperature cycle (HTC) due to environmental and public
Externí odkaz:
https://doaj.org/article/b4e16f851a3247cd92343c825afcb1c2
Autor:
Min-Ju Jeon, Joon-Hyuk Lee
Publikováno v:
Energies, Vol 17, Iss 17, p 4481 (2024)
The R744/R404A cascade refrigeration system (CRS) has been widely used in supermarkets and hypermarkets, but due to the refrigerant regulation of R404A, research on alternative refrigerants is necessary. In addition, although there have been quite a
Externí odkaz:
https://doaj.org/article/2a677ad9ae484dc6b3f06034e4cb9ebb
Autor:
Min-Ju Jeon, Joon-Hyuk Lee
Publikováno v:
Energies, Vol 17, Iss 16, p 4127 (2024)
In this study, the performance characteristics of an R404A indirect refrigeration system (IRS) applied to an internal heat exchanger (IHX) is evaluated for supermarkets and hypermarkets. In a direct expansion system, R404A is the primary refrigerant
Externí odkaz:
https://doaj.org/article/1664a74aa7e044349d62af81722ced07
Autor:
Min-Ju Jeon, Joon-Hyuk Lee
Publikováno v:
Energies, Vol 17, Iss 16, p 4143 (2024)
Although the R404A indirect refrigeration system (IRS) with an internal heat exchanger (IHX) and R744 as the secondary fluid has potential applications in supermarkets and hypermarkets, the exergy characteristics of this IRS have not been extensively
Externí odkaz:
https://doaj.org/article/6872eb6f3faa46378122087cd35ebc9a
Autor:
Joon-Hyuk Lee, Mehak M. Khan, Amanda P. Stark, Soobin Seo, Aliya Norton, Zhiyi Yao, Christopher H. Chen, Wade G. Regehr
Publikováno v:
Cell Reports, Vol 42, Iss 5, Pp 112429- (2023)
Summary: Within the cerebellar cortex, mossy fibers (MFs) excite granule cells (GCs) that excite Purkinje cells (PCs), which provide outputs to the deep cerebellar nuclei (DCNs). It is well established that PC disruption produces motor deficits such
Externí odkaz:
https://doaj.org/article/cf6ce60d919840059e711ae00151bf5f