Abstract
Printed circuit heat exchangers (PCHE) with high strength and high efficiency have been widely selected for supercritical CO2 Brayton cycle systems. Precise design and multi-objective optimization of PCHEs are the key to further cost reduction and overall performance improvement. In this paper, a precise design and targeted optimization method of microchannel heat exchangers is proposed. The drastic change of thermophysical properties and the local inhomogeneity of heat transfer during coupled heat transfer on both sides are fully considered and matched with the structural design along the course. Optimization is performed using the NSGA-III algorithm, which couples the working condition parameters with the structural parameters. It is found that the exact method, consisting of a segmented objective non-uniform model, reduces the volume by 9.59% compared to the conventional uniform model. The volume of the optimized PCHE is 0.099 m3. The heat transfer coefficient is significantly improved within the allowable pressure drop. The results of this work can provide important theoretical and technical support for the design, optimization and application of microchannel heat exchangers.
| Original language | English |
|---|---|
| Title of host publication | Proceedings - 2025 IEEE 2nd International Conference on Energy and Electrical Engineering, EEE 2025 |
| Editors | Mengqi Zhou |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9798331518271 |
| DOIs | |
| State | Published - 2025 |
| Event | 2nd IEEE International Conference on Energy and Electrical Engineering, EEE 2025 - Nanchang, China Duration: 20 Jun 2025 → 21 Jun 2025 |
Publication series
| Name | Proceedings - 2025 IEEE 2nd International Conference on Energy and Electrical Engineering, EEE 2025 |
|---|
Conference
| Conference | 2nd IEEE International Conference on Energy and Electrical Engineering, EEE 2025 |
|---|---|
| Country/Territory | China |
| City | Nanchang |
| Period | 20/06/25 → 21/06/25 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Flow and heat transfer
- Multi-objective optimization
- Printed circuit heat exchanger
- Segmented targeted design
- Supercritical carbon dioxide
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