Results 31 to 40 of about 2,961,144 (192)

Effect of finned structure on critical heat flux (CHF) in downward-face pool boiling

Mechanical Engineering Journal, 2020
Critical heat flux (CHF) plays an important role as the upper limit of heat dissipation process during the in-vessel reactor external reactor vessel cooling (IVR-ERVC). IVR-ERVC is regarded as a very effective way to release the decay heat after the core
Kai WANG, Nejdet ERKAN, Koji OKAMOTO
doaj   +1 more source

Structural assessment of reactor pressure vessel under multi-layered corium formation conditions

Nuclear Engineering and Technology, 2015
External reactor vessel cooling (ERVC) for in-vessel retention (IVR) has been considered one of the most useful strategies to mitigate severe accidents.
Tae Hyun Kim, Seung Hyun Kim, Yoon-Suk Chang   +2 more
doaj   +1 more source

Multi-nozzle spray cooling of a reactor pressure vessel steel plate for the application of ex-vessel cooling

, 2021
Spray cooling is a versatile technology for various cooling applications involving high surface heat fluxes. Experimental facility was built to study heat transfer performance of an upward multi-nozzle array of water sprays impacting a surface of heated ...
Bechta, Sevostian,, Bandaru, S V Ravikumar,, Thakre, Sachin,, Villanueva, Walter,   +3 more
core   +1 more source

Assessment of thermal safety margins for the IVR-ERVC strategy of the i-SMR using the CINEMA code

Nuclear Engineering and Technology
In-vessel corium retention with external reactor vessel cooling (IVR-ERVC) is a key severe accident mitigation strategy to prevent lower-head failure and retain fission products inside the reactor vessel. This study assesses the applicability of IVR-ERVC
Dong-Hun Shin, Sang Ho Kim, Donggun Son, Yonadan Choi, Young Hee Kim, Hyoung Suk Yu, Yong Hoon Jeong   +6 more
doaj   +1 more source

In-Vessel Melt Retention of Pressurized Water Reactors: Historical Review and Future Research Needs

Engineering, 2016
A historical review of in-vessel melt retention (IVR) is given, which is a severe accident mitigation measure extensively applied in Generation III pressurized water reactors (PWRs).
Weimin Ma, Yidan Yuan, Bal Raj Sehgal
doaj   +1 more source

Modelling thermal effects in agitated vessel and reactor design consideration [PDF]

, 2007
The knowledge of the heat transfer coefficient on the inner side of a heated vessel wall is of utmost importance for the design of agitated vessels. The present contribution deals with heat transfer in an agitated vessel containing non-Newtonian liquid ...
Chergui, Nacera, Aldoori, Hamid, Debab, Abdelkader, Bertrand, Joël   +3 more
core  

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Effect of new drywell cooler application for venting start time during severe accidents

Mechanical Engineering Journal, 2020
Nuclear power plants are equipped with a hardened containment venting system and a filtered containment venting system to avoid a primary containment vessel (PCV) break by over-pressurization. Considering the gas release from these venting systems, it is
Naoyuki ISHIDA, Yasunori NAGATA, Ryusuke KIMURA, Koji ANDO   +3 more
doaj   +1 more source

Kinetic study of defluoridation of drinking water by electrocoagulation/electroflotation in a stirred tank reactor and in an external-loop airlift reactor [PDF]

, 2010
A kinetic study of defluoridation of drinking water was carried out using the electrocoagulation/electroflotation process in two batch reactors of identical volume (20 L): a stirred tank reactor (STR) and an external-loop airlift reactor (ELALR).
A.H. Essadki, Essadki, A.H., Azzi, Mohammed, M. Azzi, H. Delmas, Essadki, Abdel Hafid, Vial, Ch., Delmas, Henri, Vial, Christophe, Gourich, Bouchaib, Ch. Vial, Gourich, B., Delmas, H., B. Gourich   +13 more
core   +1 more source

Hydrophobic MFI‐Type Zeolites via Alkali‐Cation‐Induced Defect Healing: Implications for Adsorbent and Catalyst Design

Advanced Materials, EarlyView.
Sub‐stoichiometric amounts of Na+ or K+ enhance defect healing during Silicalite‐1 (MFI) and TS‐1 calcination by promoting Si–O–Si annealing and healing framework vacancies. The resulting defect‐free zeolites are more hydrophobic and show improved butanol/water separation and improved activity and selectivity in the epoxidation of 1‐hexene, offering a ...
Christos Kanteler, Pau Ferri, Francisco Javier Escobar‐Bedia, Álvaro Mayoral, Alejandro Vidal‐Moya, Richard Kendra, Chen Lei, Miguel Palomino, Fernando Rey, Lukáš Grajciar, Christopher James Heard, Pedro Serna, Mercedes Boronat, Cristina Martínez, Manuel Moliner   +14 more
wiley   +1 more source