Table 1.
The efficiency of different filter/purification equipment in the air conditioning system
| Filtration efficiency α1 | Purification efficiency α2 | |
|---|---|---|
| Minimum configuration | 30% | 40% |
| Medium configuration | 50% | 75% |
| Top configuration | 70% | 95% |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.