研究目的
To theoretically predict the irradiance of multiple UR-UVGI fixtures for the practical evaluation of their disinfection efficiencies.
研究成果
A mathematical model based on the view factor was developed to predict the spatial irradiance of multiple UR-UVGI fixtures. The prediction of the model compared well with the measurement results reported by other researchers. The mathematical model has high beneficial to the design of the UR-UVGI disinfection system.
研究不足
The reflection from the room internal wall is ignored because when the emissive irradiance reaches the wall surface, the value near the wall is low. The reflectivity of the wall surface is so low that the reflection of the wall can be neglected.
1：Experimental Design and Method Selection:
A mathematical model based on the view factor approach from radiative heat transfer was developed. The reflector and tedious fixture were simplified as a fictitious surface and the shading effect of the louvers was considered.
2：Sample Selection and Data Sources:
The model was validated by comparing with a literature experiment case where two upper-room wall-mounted UVC germicidal fixtures were installed in a room.
3：List of Experimental Equipment and Materials:
Two upper-room wall-mounted UVC germicidal fixtures (Atlantic Ultraviolet Corp., Hauppauge, NY) with a 25-W tubular lamp each.
4：Experimental Procedures and Operational Workflow:
The irradiance was measured at z = 2.44 m for 7 rows and 5 columns locations. The mathematical model was solved with ANSYS FLUENT 14.0 and the equations were coded into the software via the user-defined function.
5：44 m for 7 rows and 5 columns locations. The mathematical model was solved with ANSYS FLUENT 0 and the equations were coded into the software via the user-defined function.
Data Analysis Methods:
5. Data Analysis Methods: The predicted irradiance was compared with the measured values reported by Rudnick et al.
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