The University of Tokyo, Daikin Kogyo Co., Ltd., and Nippon Paint Holdings Co., Ltd. have jointly conducted an engineering demonstration for managers of educational facilities such as schools as a measure to reduce the risk of respiratory infections such as the new coronavirus infection. We have formulated a reference guide that summarizes specific measures for improving the indoor environment based on.
Regarding the epidemic of the new coronavirus infection since last year, governments and government agencies have presented basic measures to prevent infection.Measures are being taken mainly in offices and commercial facilities, but educational facilities have unique issues.As part of industry-academia collaborative creation activities, this reference guide is a two-part compilation of specific countermeasures based on field experiments and simulations at school sites.
Part 1 is a guide to measures against airborne and aerosol infections.Ventilation with open windows in summer and winter reduces the comfort of the indoor environment and affects the learning effect and physical condition.If a heat exchange type ventilation device is used, it is possible to ventilate while suppressing fluctuations in indoor temperature and humidity.It was also confirmed that in the case of an air purifier (filter filtration type, air volume 7 cubic meters per minute), one unit (installed at the rear of the classroom) can obtain the equivalent ventilation volume for about 1 people.In either case, regular cleaning and replacement of filters are important.
The second part is a guide on contact infection control.The risk of contact infection can be reduced by applying an antiviral / antibacterial coating to the surface of substances (desks, chairs, handrails, etc.) that are often contacted in actual educational settings.The guide comes with a product selection guide for effective paints and coatings.You can check performance data, test methods, maintenance, repainting time, etc.
It is said that the widespread implementation of the reference guide formulated this time will contribute to the construction of a safe, secure and comfortable educational environment.
