Numerical investigation on photocatalytic CO2 reduction by solar energy in double-skin sheet reactor

摘要: Abstract Double-skin sheet reactor (DSSR) attracts attention in recent years due to the simple design and high mass transfer, but its application photocatalytic CO 2 reduction with immobilized catalyst is still a new trial. In this paper, three-dimensional models describing DSSR by means of solar energy were developed numerically simulated, on basis transient continuous light distributions. A performance evaluation approach was proposed guide structural optimization reduction. The effects operation parameters structures CH 3 OH concentration analyzed discussed. results show that outlet 2.68 × 10 −4  mol m −3 much greater than 1.77 × 10 −5 optical fiber monolith under same conditions. It increases as both inlet water vapor ratio day-average flux increase, decreases increasing velocity, all which are beneficial productivity. will decrease increase number parallel-flow channels, thanks rise width–height inserting flow guiding pieces, recommended for higher DSSR.