Results 71 to 80 of about 1,938,048 (277)

Optimizing the refrigerants in ultra-low temperature Semiconductor processing chiller with mixed Refrigerant

Case Studies in Thermal Engineering
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.
Hye-In Jung, Chang-Hyo Son, Joon-Hyuk Lee   +2 more
doaj   +1 more source

Relaxor Ferroelectricity Enables Enhanced Thermoelectric Performance in In2Se3‐Alloyed GeTe

Advanced Science, EarlyView.
A non‐equimolar In3+/Se2− alloying strategy creates Ge vacancies in GeTe, inducing relaxor ferroelectricity that broadens the low thermal conductivity window. Simultaneously, cubic phase stabilization broadens optimal electrical transport, achieving an average zT > 1.0 over 330–625 K.
Yuting Zhang, Yang Li, Jianguo Chen, Kai Guo, Jun Luo, Jiye Zhang   +5 more
wiley   +1 more source

Viscosity Measurements and Modeling for R32 and Binary Mixture of R32/R1234yf

Zhileng xuebao, 2018
Recently, the Paris Agreement which many nations agreed to limit greenhouse gas emissions, has come into effect. According to the agreement, many of the compounds currently used in the refrigeration sector are scheduled for phase out due to ozone ...
Meng Xianyang, Sun Yukun, Cao Fali, Wen Chenyang, Wu Jiangtao   +4 more
doaj  

The adsorption and desorption processes of organic working fluids R1234yf, R134a, R32 in MOF-5 and Co-MOF-74: a molecular simulation study

Frontiers in Energy Research
The combination of nanoporous materials with organic working fluids holds the promise of further enhancing the performance of refrigerants based thermodynamics cycles.
Xinping Chen
doaj   +1 more source

Programming Structural Symmetry and Emission in Low‐Dimensional Hybrid Perovskites via Time and Temperature

Advanced Science, EarlyView.
We demonstrate programmable structural symmetry and emission in benzylammonium‐based low‐dimensional hybrid perovskites. Continuous shaking transforms orthorhombic platelets into a lower‐symmetry monoclinic phase with broadband emission, whereas thermal activation drives the reverse pathways toward a higher‐symmetry configuration resembling the ...
Luiz G. Bonato, Sirous Khabbaz Abkenar, Balaji Dhanabalan, Quentin Evrard, Luca Goldoni, Sergio Marras, Giorgio Divitini, Milena P. Arciniegas   +7 more
wiley   +1 more source

Mixed refrigerant cooling system using non-flammable refrigerants [PDF]

, 2011
The mixed refrigerant JT (Joule-Thomson) cooling system has been investigated in this study. The mixed refrigerant is composed of completely non-flammable refrigerants while the preceding studies have focused on the flammable refrigerants.
정상권, 백승환, 황규완
core   +1 more source

Impact of the mixing theories on the performance of ejector expansion refrigeration cycles for environmentally-friendly refrigerants

International Journal of Refrigeration, 2019
Abstract Ejector expansion refrigeration cycle was investigated theoretically to compare the constant pressure mixing and constant area mixing ejector theories making use of thermodynamic models. Performance improvement was presented according to optimum and constant value pressure drop assumptions in order to simulate the design and off-design ...
Atmaca, Aye Ugurcan, Erek, Aytunc, Ekren, Orhan   +2 more
openaire   +4 more sources

Heat Stress Promotes Fibroblast‐Derived WNT5A Secretion Through m6A Modification to Activate Melanogenesis

Advanced Science, EarlyView.
Heat stress promotes WNT5A secretion from fibroblasts via METTL3/YTHDC1‐dependent m6A methylation. Subsequently, WNT5A binds to FZD10 on melanocytes, activating β‐catenin‐driven melanogenesis. ABSTRACT As the impact of global warming continues to intensify, the effects of heat stress on the skin are becoming increasingly evident.
Yuanyuan Wan, Yaqing Wen, Yushan Zhang, Lan Zhang, Jianjian Zhu, Zhen Tang, Ling Jiang, Chuhan Fu, Shu Zhou, Keyi Zhang, Jiangfeng Huang, Li Lei, Jing Chen, Qinghai Zeng   +13 more
wiley   +1 more source

A Novel Approach of −80 °C Cascade Refrigeration System Using Non-Flammable Quaternary Refrigerants for Semiconductor Process Applications

Energies
Ultra-low temperature chillers have seen increasing demand with the advancement of semiconductor technology. Mixed refrigerant (MR) cascade refrigeration systems (CRSs) are widely utilized for their stability and high cooling performance at low ...
Su-Been Lee, Chang-Hyo Son, Joon-Hyuk Lee   +2 more
doaj   +1 more source

Soft Hypoxia‐Adaptive Bioelectronics Integrating PEDOT:PSS/Polydopamine/Enzyme Biocomposites for Closed‐Loop Therapeutics of Chronic Wounds

Advanced Science, EarlyView.
Hypoxia‐adaptive bioelectronics based on poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/polydopamine (PDA)/enzyme biocomposites couple O2‐centric biosensing with embedded O2 therapy to address oxygen‐deficient chronic wounds. Local O2 provision restores enzyme‐based metabolite sensing, while catalase‐mediated oxygen generation and
Songrui Liu, Bowen Yang, Cao Qi, Zhijie Zhou, Haochen Zou, Anjum Qureshi, Xiao Zhao, Ting Li, Li Gao, Ye Tao, Gang Song, Pingqiang Cai, Zheng Li, Zhiyuan Liu, Dianpeng Qi, Ting Wang, Lianhui Wang   +16 more
wiley   +1 more source