Full
Outline
To address the challenge of the unclear coupling mechanism between cross‑flow and counter‑flow heat transfer in printed circuit heat exchanger（PCHE） operation，a key issue hindering equipment design，a numerical model was developed to simulate conjugate flow and heat transfer processes within PCHEs.The SLENDER BLOCK+ structured meshing method was introduced for discretizing the PCHE core，enabling quality mesh generation and numerical simulation for industrial‑scale units.The industrialized test data were used to verify the model's accuracy.The error in heat transfer load was less than 10%，and the pressure drop error was less than 5%.The results revealed two critical phenomena：Significant natural gas channel temperature non‑uniformity，characterized by an enhanced heat transfer zone near the seawater inlet and an impaired zone near the outlet；a calculated overdesign margin of 40.5%，indicating considerable potential for flow‑path optimization.This method establishes a robust framework for PCHE performance prediction and engineered optimization design in domestic engineering applications.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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