2.2 SARS-CoV-2 Test Room and the Electric Heater
Fig. 1 is the schematic representation of the 30 m3test room where the experiments were carried out. The test room has an entry point for injection of the aerosolized SARS-CoV-2 by a venturi injector, an exit point for sample collection, an entry point for humidity regulation, air conditioning for temperature regulation, and a fan to homogenize the distribution of the aerosolized virus. A nebulizer (M102, Jiangsu Yuyue Medical Equipment & Supply Co., Ltd., Danyang Jiangsu, China) aerosolized the virus at an average nebulization rate of 0.2 mL/min at a particle size of 3.7 microns (as specified by the manufacturer).