Experimental study on microorganism ecological distribution and contamination mechanism in supply air ducts

▸ Study the effect of deposition dust on surface roughness in supply air ducts. ▸ Testing microbial counts (including bacteria and fungus) and identifying microorganism species. ▸ Study the effect of supply air velocity on dust distribution in supply air ducts. ▸ Study the effect of supply air velocity, temperature and RH on microbial growth. ▸ Orthogonal experiment design determined the main factor affecting microorganism growth.