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A CO2 supercritical or transcritical Brayton cycle is one of the prospective thermodynamic cycles for power generation with medium and high-grade heat sources due to its high system thermal efficiency and compact system structure. As an important component in the cycle, a shell-and-tube CO2 supercritical heater plays an important role in the overall system performance and controls as such a detailed performance analysis of the heat exchanger is necessary. Correspondingly, a three-dimensional (3D) computational fluid dynamic (CFD) model of the shell-and-tube CO2 heat exchanger has been developed based on actual structural data and operating conditions of an operational biomass CO2 power generation test rig. The model has been validated with manufacture data in term of heating capacity and compared with literatures on the calculations of pressure drop and heat transfer coefficients. The model is then applied to simulate and optimize the coil performance at different operating and design conditions.
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- Original title: Performance analysis of a shell-and-tube CO2 supercritical heater with CFD modelling
- Record ID : 30027565
- Languages: English
- Subject: Technology
- Source: 6th IIR International Conference on Sustainability and the Cold Chain. Proceedings: Nantes, France, August 26-28 2020
- Publication date: 2020/08/26
- DOI: http://dx.doi.org/10.18462/iir.iccc.2020.292303
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