Construction of Rotated Disinfection-Box for Degree Certificates with UVC

EasyChair Preprint no. 7971

Abstract

The rotated disinfection box for degree certificates with UVC was constructed to study the Ultraviolet dose (HUV, exp) and determine the appropriate killing rate (KR) for the disinfection of degree certificates. The degree certificate disinfection box was rotated at three different speeds (N), namely: 6, 8, and 10 rpm. The radiation intensity values were measured by the UVC meter at the grille in 4 measurement positions.: y0 = 0 m, y1 = 0.19 m, y2 = 0.39 m, and y3 = 0.59 m. In a rotated disinfection box measuring 120 cm x 120 cm x 200 cm, an Ultraviolet Germicidal Irradiation system (UVGI) with a wavelength of 254 nm, a power of 32 W, and eight UVC lamps were employed. The UV rate constant (z) is set at 0.079 m2/J and the SARS-CoV-2 virus was killed with a criterion of radiation exposure of more than 134 J/m2. The results revealed that in all situations, HUV, exp would be larger than 134 J/m2 in the case of Tm greater than 50 s, and KR would reach 100% in 26 s. As a result, the UVC-constructed Rotated Disinfection-Box for Degree Certificates may sterilize certificates with confidence.

Keyphrases: Disinfection system, Killing rate, Rotated Disinfection Box, ultraviolet radiation

@Booklet{EasyChair:7971,
  author = {Prin Nachaisit and Jattupon Pongkun and Ratinun Luampon and Bundit Krittacom},
  title = {Construction of Rotated Disinfection-Box for Degree Certificates with UVC},
  howpublished = {EasyChair Preprint no. 7971},

  year = {EasyChair, 2022}}