Results 261 to 270 of about 10,164 (305)

Analysis of printed circuit heat exchanger (PCHE) potential in exhaust waste heat recovery

Applied Thermal Engineering, 2022
Abstract Exhaust waste heat recovery technology based on power cycles requires high efficiency, low flow resistance, and a compact structure for exhaust gas heat exchangers. It is a huge challenge for traditional heat exchangers, such as double tube or shell and tube heat exchangers.
Hongfei Zhang, Lingfeng Shi, Wang Xuan, Tianyu Chen, Yurong Li, Hua Tian, Gequn Shu   +6 more
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Investigation of Printed Circuit Heat Exchangers for VHTRs

Fourth International Topical Meeting on High Temperature Reactor Technology, Volume 1, 2008
Very High Temperature Reactors (VHTRs) require high temperature (900–950 °C), high integrity, and high efficiency heat exchangers during normal and off-normal conditions. A class of compact heat exchangers, namely, the Printed Circuit Heat Exchangers (PCHEs), made of high temperature materials, found to have the above characteristics, are being ...
Sai K. Mylavarapu, Xiaodong Sun, Justin Figley, Noah J. Needler, Richard N. Christensen   +4 more
openaire   +1 more source

Optimization of Printed Circuit Heat Exchanger Using Exergy Analysis

Journal of Heat Transfer, 2015
A printed circuit heat exchanger (PCHE) with zigzag flow channels in a double-faced configuration was optimized to enhance its thermal–hydraulic performance. Using exergy analysis, the objective function was defined as the net exergy gain of the system considering the exergy gain by heat transfer and exergy loss due to friction in the channels.
Sang-Moon Lee, Kwang-Yong Kim
openaire   +1 more source

Review on Mechanical Design of Printed Circuit Heat Exchangers

Volume 9: Student Paper Competition, 2017
As a critical component in the advanced non-light water nuclear power plants with indirect power cycles, an intermediate heat exchanger (IHX) is used to transfer the heat from the primary coolant system to the secondary system. Generally, such reactors are operated at very high temperatures and pressures.
Xiaoqin Zhang, Shanbin Shi, Richard N. Christensen, Xiaodong Sun   +3 more
openaire   +1 more source

Conceptual Design of Aeropropulsion Engine Heat Exchangers Part 3: Printed Circuit Heat Exchanger (PCHE)

51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2013
A major challenge which emerged in developing innovative approaches for significantly reducing the aviation Greenhouse Gas (GHG) emissions was the design of a compact heat exchanger. As a part of the FAA program under US Department of Transportation Contract Number DTRT57-11-P-80083, an LP Turbine Exhaust Driven (TED-T) secondary cycle was proposed for
Pratikash Panda, Vineet Kumar, Hukam Mongia   +2 more
openaire   +1 more source

Heat Transfer of Supercritical Carbon Dioxide in Printed Circuit Heat Exchanger Geometries

2010 14th International Heat Transfer Conference, Volume 4, 2010
The increasing importance of improving efficiency and reducing capital costs has lead to significant work studying advanced Brayton cycles for high temperature energy conversion. Using compact, highly efficient, diffusion-bonded heat exchangers for the recuperators, has been a noteworthy improvement in the design of advanced carbon dioxide Brayton ...
Alan Kruizenga, Mark Anderson, Roma Fatima, Michael Corradini, Aaron Towne, Devesh Ranjan   +5 more
openaire   +1 more source

Development of tritium permeation model for Printed Circuit Heat Exchanger

Annals of Nuclear Energy, 2016
Abstract The Very High Temperature Reactor (VHTR) has been noticed for its capability to provide process heat to various industrial processes due to its high operation temperature. However, this integration concept of VHTR and other industrial processes can potentially create a possibility of tritium exposure to other industrial processes and even to
Min Young Park, Min Seop Song, Eung Soo Kim   +2 more
openaire   +1 more source

Heat transfer characteristics of printed circuit heat exchangers under mechanical vibrations

International Journal of Numerical Methods for Heat & Fluid Flow
Purpose The purpose of this paper is to investigate the impact of mechanical vibration on the heat transfer and pressure drop characteristics of semicircular channel printed circuit heat exchangers (PCHEs), while also establishing correlations between vibration parameters and thermal performance.
Zhengqiang Ding, Li Xu, Yiping Zhang
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Design Optimization of a Printed Circuit Heat Exchanger Using Surrogate Models

Journal of Fluid Machinery, 2011
Shape optimization of a Printed circuit heat exchanger (PCHE) has been performed by using three-dimensional Reynolds-Averaged Navier-Stokes (3-D RANS) analysis and surrogate modeling techniques. The objective function is defined as a linear combination of effectiveness of the PCHE term and pressure drop in the cold channels of the PCHE.
Sang-Moon Lee, Kwang-Yong Kim
openaire   +1 more source

Performance Analysis of Printed Circuit Heat Exchanger for Supercritical Carbon Dioxide

Journal of Heat Transfer, 2017
A printed circuit heat exchanger (PCHE) was selected as the recuperator of supercritical carbon dioxide (S-CO2) Brayton cycle, and the segmental design method was employed to accommodate the rapid variations of properties of S-CO2. The local heat capacity rate ratio has crucial influences on the local thermal performance of PCHE, while having small ...
Jiangfeng Guo, Xiulan Huai
openaire   +1 more source