Peixin Dong

Hong Kong Polytechnic University China

Peixin Dong obtained his Ph.D. from the University of Queensland, Australia, and is a researcher at The Hong Kong Polytechnic University. He has published more than thirty academic journal papers on heat transfer, twelve as first author and corresponding author. His research interests include natural draft dry cooling towers, printed circuit heat exchangers, electric vertical take-off and landing (eVTOL), aircraft thermal management, and wave propagations. He has been selected for the Hong Kong ITF-Talent Hub 2024. His mission and dedication are investigating the best solution for the thermal management of eVTOLs, which are expected to relieve urban congestion.

1books edited

1chapters authored

Latest work with IntechOpen by Peixin Dong

This book offers a comprehensive overview of the latest technological advancements in heat exchangers, providing valuable insights for researchers, engineers, and students in related fields. It investigates the latest developments and practical applications across various sectors, depicting both foundational concepts and emerging trends. The book is structured into three sections: “Phase-Change Material (PCM) Heat Exchangers”, “Modeling Methodologies”, and “Material Thermodynamics”. In Section 1, two chapters explore the principles and applications of PCMs, focusing on their role in enhancing thermal management and energy storage. In Section 2, three chapters provide an extensive review of the evolution of different heat exchanger designs and modeling methodologies, highlighting innovation-aided performance improvements. In Section 3, the final chapter investigates the practical aspects of heat transfer in thermal materials, emphasizing optimization techniques and real-world applications. Edited by Peixin Dong, a recognized expert from Hong Kong ITF-Talent Hub 2024, and Xin Sui, a senior researcher/engineer, this book serves as an essential resource for anyone involved in studying and utilizing heat exchanger technologies. Whether you are looking to understand the latest research, explore new design methodologies, or apply advanced heat transfer techniques, this volume offers the insights and knowledge required to stay at the forefront of the field. Innovative Heat Exchanger Technologies, Developments and Applications is your gateway to understanding the future of heat exchanger technology and its impact on diverse industries.

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Innovative Heat Exchanger Technologies, Developments and Applications

Edited by Peixin Dong

Chapters authored

Two Modeling Approaches for sCO₂-PCHEs Transients

By Xin Sui and Peixin Dong

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. Both the significant computational resources required and the high investment costs of experiments limit their widespread application. To model the component- and system-level transients of sCO₂-PCHEs, this study presents two 1D modeling approaches for different purposes: one for component-level simulation based on local properties of sCO₂, and the other for system-level simulation based on transfer functions. Given the significant discrepancies observed when using a fixed time constant in the latter approach, this paper introduces the concept of an optimal time constant to model the transient behavior of PCHEs as a first-order system with minimal prediction error. This optimal time constant varies with operating conditions, contrary to what the name might suggest. These results demonstrate the potential of PCHEs in advanced power cycles and provide valuable insights for accurate system-level sCO₂ power cycle control studies.

Part of the book: Innovative Heat Exchanger Technologies, Developments and Applications

Peixin Dong

Latest work with IntechOpen by Peixin Dong

Innovative Heat Exchanger Technologies, Developments and Applications

Chapters authored

Related collaborators

Seiji Kojima

Jorge Sergio Téllez-Martínez

Xin Sui

Shen Tian

Jiahui Ma

Lingling Tian

Jiawei Li

Tieying Wang

Aragaw Alamnia

José Luis Zuñiga-Cerroblanco

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