Open AccessMitigating air problems and producing renewable energy with solar downdraft tower
Author(s) -
Liu Yang,
Li Zhou
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/508/1/012022
Subject(s) - environmental science , haze , megacity , meteorology , renewable energy , solar chimney , air pollution , solar energy , environmental engineering , atmospheric sciences , engineering , geology , geography , chemistry , economy , organic chemistry , electrical engineering , economics
Over the past three decades, China, especially in the megacity areas, has suffered from air pollution and heavy haze with its decades-long burst of economic growth and rapidly expanding clout as an industrial giant. The important two elements of air pollutant in China are the fine particles (PM 2.5-PM 10) and non-natural greenhouse gases. To overcome these problems, in this study, we propose a novel inversion solar chimney approach for mitigating the air pollution and haze problems in the megacities of China by using water to scavenge air pollution through spraying water into the atmosphere. For a water drop floating in air or falling through air, the sensible heat of air would transfer to the latent heat of droplets and will cause a decrease in drop size. In a quite short transient time, the droplet evaporates and cools down to air ‘wet-bulb’ temperature. The Direct air capture devices (DAC) are installed at the bottom of the solar downdraft tower to reduce the CO2 in the atmosphere.