基于超临界天然气的PCHE流动传热特性数值模拟

doi:10.3969/j.issn.1006-8805.2023.02.002

Petro-chemical Equipment Technology ›› 2023, Vol. 44 ›› Issue (2): 7-12.doi: 10.3969/j.issn.1006-8805.2023.02.002

• STATIC EQUIPMENT • Previous Articles

Numerical Simulation of PCHE Flow and Heat Transfer Characteristics Based on Supercritical Natural Gas

Guo Zhifang¹, Zhang Xiaohui², Li Fangqiu², Yu Zhenzhen¹, Mi Xiaoguang²

1. Offshore Oil Engineering Co., Ltd., Tianjin, 300451;
2. Technology R&D Center of CNOOC Gas and Power Group, Beijing, 100028

Received:2022-12-03 Accepted:2023-02-28 Online:2023-03-15 Published:2023-03-17
Contact: Zhang Xiaohui E-mail:guozf@cooec.com.cn

Abstract

Abstract: Printed circuit board heat exchanger (PCHE) is a microchannel heat exchanger based on chemical etching and diffusion bonding. When PCHE is applied to domestic offshore oil platforms, it often occurs that the heat exchange medium is supercritical natural gas. In order to explore the effects of different medium flow rates, different medium components and different plate structures on the flow and heat transfer characteristics of the heat exchanger, the physical properties, flow and heat transfer characteristic parameters of natural gas supercritical fluid are systematically analyzed by FLUENT software. The results show that the flow velocity has the most significant effect on the flow and heat transfer characteristics of the heat exchanger and the convective heat transfer coefficient increases linearly with the increase of flow velocity. The channel diameter is the second largest factor affecting the flow and heat transfer characteristics of the heat exchanger. The effects of different medium components, plate thickness and channel rib width on the fanning friction factor and average surface convective heat transfer coefficient of the heat exchange medium can be ignored. The research results can provide theoretical guidance for the process design of PCHE in the future.

Key words: printed circuit plate heat exchanger (PCHE), supercritical, natural gas, numerical simulation, heat exchanger

Guo Zhifang, Zhang Xiaohui, Li Fangqiu, Yu Zhenzhen, Mi Xiaoguang. Numerical Simulation of PCHE Flow and Heat Transfer Characteristics Based on Supercritical Natural Gas[J].Petro-chemical Equipment Technology, 2023, 44(2): 7-12.

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Numerical Simulation of PCHE Flow and Heat Transfer Characteristics Based on Supercritical Natural Gas

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