| Title |
Experimental Verification for Particle Removal Efficiency of Heat Recovery Ventilation Systems with Air Filters |
| Authors |
조예림(Jo, Ye-Lim) ; 성민기(Sung, Min-Ki) |
| DOI |
https://doi.org/10.5659/JAIK.2021.37.10.149 |
| Keywords |
PM(Particulate Matter); Ventilation System; Filter; Performance Verification |
| Abstract |
Recently, the importance of filters used in mechanical ventilation systems has been increasing in Korea due to a surge in the concentration
of pollutants in the atmosphere. The filter should be tested for performance and then issued a test report in accordance with specifications,
and the performance test is currently conducted exclusively by the filter. However, air purifiers and ventilation systems are designed to allow
filter replacement, so when a filter is installed, there is a possibility of leakage due to a gap between the machine and the filter. Because
the particle removal efficiency of the filter is affected by various factors as well as leakage, it is not possible to know the exact filter
performance without considering these. Accordingly, this study measured filter performance when filters were installed in ventilation systems
in operation. Three other ventilation systems were used for the experiment, and test results and the test reports were compared to the particle
size used for the performance test. As a result, all three models were less efficient than test reports, and three additional experiments were
conducted in accordance with KS specifications to determine the cause of these errors. Experiments show that the filter efficiency itself is
likely to be problematic, but there are several differences between the field test methods and the KS specification. Therefore, it is deemed
necessary to conduct performance verification in a similar environment after minimizing these differences and emphasized the need for a new
performance test specification to verify removal efficiency when used in the field by installing filters on mechanical ventilation systems. |