The optimization for the straight-channel PCHE size for supercritical CO2 Brayton cycle
| Autor: | Gang Hong, Houjun Gong, Hao Ding, Hong Xu, Yaoli Zhang, Duan Chengjie, Li Wenhuai |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Heat transfer rate
Pressure drop Next Generation Nuclear Plant 020209 energy Nuclear engineering Pumping power TK9001-9401 02 engineering and technology Supercritical CO2 Printed circuit heat exchanger Multi-objective optimization Brayton cycle Supercritical fluid 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Nuclear Energy and Engineering Volume (thermodynamics) Heat transfer Heat exchanger 0202 electrical engineering electronic engineering information engineering Nuclear engineering. Atomic power Mathematics |
| Zdroj: | Nuclear Engineering and Technology, Vol 53, Iss 6, Pp 1786-1795 (2021) |
| ISSN: | 1738-5733 |
| Popis: | Printed Circuit Heat Exchanger (PCHE) is a widely used heat exchanger in the supercritical carbon dioxide (sCO2) Brayton cycle because it can work under high temperature and pressure, and has been a hot topic in Next Generation Nuclear Plant (NGNP) projects for use as recuperators and condensers. Most previous studies focused on channel structures or shapes. However, no clear advancement has so far been seen in the allover size of the PCHE. In this paper, we proposed an optimal size of the PCHE with a fixed volume. Two boundary conditions of PCHE were simulated, respectively. When the volume of PCHE was fixed, the heat transfer rate and pressure loss were picked as the optimization objectives. The Pareto front was obtained by the Multi-objective optimization procedure. We got the optimized number of PCHE channels under two different boundary conditions from the Pareto front. The comprehensive performance can be increased by 5.3% while holding in the same volume. The numerical results from this study can be used to improve the design of PCHE with straight channels. |
| Databáze: | OpenAIRE |
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