Results 71 to 80 of about 3,518 (204)

Numerical study of the heat transfer characteristics of Helium-Air flow in PCHE with zigzag channel

Case Studies in Thermal Engineering
The PCHE is a critical component in the intermediate heat exchanger of mobile micro-reactors. This study conducts a numerical investigation of the flow and heat transfer characteristics of helium-air within the zigzag channels of the PCHE under 69 ...
Haidong Liu, Qiao Zeng, Deqi Chen, Yi Xiao, Yangyang Wang, Mingxia Liu, Xiaoli Qu   +6 more
doaj   +1 more source

Gender and ethnicity in post-conflict Kosovo [PDF]

, 2008
The paper examines the comparative economic wellbeing of female- and male-headed households among Serbs and Albanians in post-conflict Kosovo. Evidence from the living standards measurement study (LSMS) household survey, 2001, shows that Serb households,
Bhaumik, Sumon Kumar, Gang, Ira N., Yun, Myeong-Su   +2 more
core  

Two Modeling Approaches for sCO2-PCHEs Transients

Printed circuit heat exchangers (PCHEs) are ideal for sCO2 power cycles due to their compactness, effectiveness, and high-pressure capability. However, their unique architecture complicates the modeling of their dynamic behavior in power cycles, which experience rapid transients.
Xin Sui, Peixin Dong
openaire   +1 more source

Thermal-mechanical coupled stress prediction of printed circuit heat exchanger in the supercritical CO2 Brayton cycle

Case Studies in Thermal Engineering
Printed circuit heat exchanger (PCHE) is widely recognized as the most promising heat exchanger for supercritical CO2 (SCO2) Brayton cycle. Stress assessment is critical to ensuring the safety and longevity of PCHE. This study addresses a critical gap in
Junlin Chen, Wenhai Du, Keyong Cheng, Xunfeng Li, Xiulan Huai, Jiangfeng Guo, Pengfei Lv, Hongsheng Dong   +7 more
doaj   +1 more source

On the Design of Recuperator for Transcritical Cycle Adopting CO2‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction

Energy Technology, Volume 12, Issue 1, January 2024.
CO2 binary mixtures in transcritical power cycles offer efficiency improvements compared to sCO2 in hot‐environments, but no studies on transport properties are available for complex/asymmetric CO2 mixtures. This work proves that the friction theory model, calibrated on pure component data, has superior predictivity compared to traditional models.
Michele Doninelli, Gioele Di Marcoberardino   +1 more
wiley   +1 more source

基于贝叶斯优化GPR模型的PCHE流动传热性能三维降阶分析方法

He jishu
印刷电路板式换热器（Printed Circuit plate Heat Exchanger，PCHE）具有高效紧凑的换热特点，但基于有限体积法（Finite Volume Method，FVM）开展PCHE流动换热性能分析效率较低、不易开展优化计算。本文将本征正交分解（Proper Orthogonal Decomposition，POD）、截断奇异值分解（Truncated Singular Value Decomposition，tSVD）与高斯过程回归（Gaussian Process ...
赵 梓炎, 温 从义, 赵 鹏程, 刘 紫静   +3 more
doaj   +1 more source

Theoretical Analysis on Thermodynamic and Economic Performance Improvement in a Supercritical CO2 Cycle by Integrating with Two Novel Double‐Effect Absorption Reheat Power Cycles

International Journal of Energy Research, Volume 2024, Issue 1, 2024.
To enhance the overall performance of recompression supercritical carbon dioxide‐ (sCO2‐) based systems, two new double‐effect absorption reheat power cycles (DARPC) were developed in this study. These methods are based on the typical absorption power cycle (APC).
Shilin Yan, Minwei Zhao, Hongfu Zhang, Hongtao Zheng, Fuquan Deng, Mahmoud Ahmed   +5 more
wiley   +1 more source

Effects of Elastic Walls on the Thermal Performance of a Counterflow Heat Exchanger

International Journal of Energy Research, Volume 2024, Issue 1, 2024.
Using elastic plates in combination with counterflow heat exchangers is an innovative aspect of thermal energy storage systems (TES). The incorporation of elastic plates dramatically enhances heat transfer. However, prior studies have yet to thoroughly investigate the effects of exerting force on these elastic plates.
Tohid Adibi, Seyed Esmail Razavi, Shams Forruque Ahmed, Shakhawan Mohammed Shakor, Gang Liu, Muharrem Hilmi Aksoy   +5 more
wiley   +1 more source

Numerical study on bionic airfoil fins used in printed circuit plate heat exchanger

Open Physics
Airfoil printed circuit heat exchangers (PCHEs) possess exceptional comprehensive performance. In recent years, extensive research has been conducted on the layout and structure optimization of airfoil fins.
Yu Chulin, Liu Binfeng, Cui Yulin, Wang Wenqing, Yang Yuxi   +4 more
doaj   +1 more source

Reduced Levels of Serum Potassium and Plasma Cholinesterase in Acute Organophosphate Poisoning: Possible Predictive Markers [PDF]

Asia Pacific Journal of Medical Toxicology, 2014
Background: It is becoming apparent that although inhibition of cholinesterase plays a key role in organophosphate (OP) toxicity, other factors are also important.
Devanur Prasad
doaj