The COVID-19 that broke out at the beginning of 2020 has touched the hearts of every Chinese. How does COVID-19 spread in a closed space? Will centralized air conditioning systems exacerbate the spread of viruses in space? How to design ventilation systems that can effectively respond to the epidemic is a common concern in the HVAC industry. On the proposal of Academician Jiang Yi, the Chinese Refrigeration Society and Tsinghua University held the "Seminar on the Transmission Law of COVID-19 in Enclosed Space" on March 11. The conference was chaired by Professor Li Xianting from Tsinghua University, and more than ten well-known experts and scholars from multiple domestic universities gave wonderful presentations.
The conference is divided into two topics: communication mechanisms and ventilation methods. The first half of the special report included Academician Jiang Yi's Understanding and Thinking on Air Transmission of COVID-19; Lin Borong from Tsinghua University; Professor Liu Li, Progress in Real time Monitoring of Indoor Environment in Diagnosis and Treatment Space of COVID-19 Hospital; Professor Zhao Bin from Tsinghua University's "Opinions on COVID-19 Prevention and Control of Aerosol Transmission and Ventilation Protection"; Qian Hua, Professor of Southeast University, COVID-19 Indoor Environmental Communication and Ventilation Control; Professor Gao Naiping from Tongji University, "Transmission Characteristics of Exhaled Particulate Matter in Indoor and Household to Household Environments"; Professor Ge Xingyi from Hunan University, "Collection of Hospital Environmental Samples and Virus Detection"; Xu Lin, professor of Tongji University, "Problems to be solved in risk assessment of new coronavirus transmission in public places such as hospitals"; Professor Li Yuguo of the University of Hong Kong, Some Thoughts on the Possibility of COVID-19 Aerosol Transmission; Professor Tan Hongwei of Tongji University reported 9 expert reports on the multi-dimensional thinking triggered by the transmission of the diamond princess COVID-19.
The second half special report includes Professor Zhang Tengfei from Tianjin University's "Risk of Particle Aerosol Transmission from Toilets in Aircraft/High Speed Rail Restrooms"; Deng Qihong, Professor of Central South University, Prediction of COVID-19 Outbreak of COVID-19 and Intervention Effect; Professor Wang Lihui from Shanghai Institute of Technology conducted a predictive study on the effective increase of new air volume in subway stations during the epidemic prevention period; Chen Yanhua, Chief Engineer of CITIC Architecture Design and Research Institute, "Defects in Architectural Design from the Perspective of Creating a Healthy and Comfortable Indoor Environment"; Professor Liu Junjie from Tianjin University, "Adapting to the Control of Closed Space Environment in Hospitals during Regular/Epidemic Situations: Mobile Industrial FFU Air Purification"; Professor Li Angui from Xi'an University of Architecture and Technology, 'Effectiveness of Ward Airflow Organization and Pollutant Control'; Professor Lin Zhang from City University of Hong Kong presented a report by seven experts titled 'Striving for Excellence and Effective Dilution - Insights on Airflow Organization in the Thunder and Fire Twin Mountain Ward'.
The experts at the meeting mainly shared the indoor air transmission characteristics of COVID-19, monitoring data, ventilation control, actual engineering cases, etc. Academician Jiang Yi expressed gratitude to all experts and colleagues for their active participation in the conference summary! He pointed out that whether the virus can spread through the air is a fundamental issue, and we must seize the opportunity to clarify the problem; At the meeting, everyone proposed practical engineering solutions, ideas, and research results. Wards and public places are two completely different types of places, with different airflow organization and practices. How to solve practical engineering problems requires in-depth research; In addition, in the face of the epidemic, it should prompt us to think more and make future Chinese construction and air conditioning healthier and more in line with future development.