Numerical analysis of a negative emission technology of methane to mitigate climate change

Hanbing Xiong, Tingzhen Ming, Yongjia Wu, Wei Li, Liwen Mu, Renaud De richter, Suying Yan, Yanping Yuan, Chong Peng

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The increase of 1.09 °C in global temperature resulted in significant catastrophes because of the extreme climate. The climate change rate can be slowed down by reducing the levels of CH4 and CO2 in the atmosphere. The solar chimney power plant integrated with a honeycomb photocatalytic reactor (SCPP-HPCR) uses the photocatalytic technology to remove atmospheric CH4. In addition, CO2 emissions can be reduced from coal fired power plant due to the generating capacity of the system. In this paper, the influence of the geometric parameters of the reactor and turbine on the overall performance of the SCPP-HPCR is studied by numerical simulation. The obtained results showed that the flow resistance inside the system was mostly caused by the HPCR at low turbine speed, and primarily by the turbine at high turbine speed. Reducing the pore diameter of the reactor could improve the photocatalytic performance of the SCPP-HPCR more than increasing the turbine speed. The SCPP-HPCR having a pore diameter of 3 mm, porosity of 0.85, and constant turbine speed of 180 rpm, built in Qianyanzhou, China, could remove 2.38 kg of CH4 and reduce 375.52 kg of CO2 in one day.
Original languageEnglish
Pages (from-to)416-424
JournalSolar Energy
Early online date25 Mar 2023
Publication statusPublished - 1 May 2023


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