| IEQ | Indoor environmental quality |
| SBS | Sick building syndrome |
| CO2 | Carbon dioxide |
| PM | Particulate matter |
| HVAC | Heating, ventilation, and air conditioning |
| IAQ | Indoor air quality |
| CFD | Computational fluid dynamics |
| nZEB | Nearly zero-energy buildings |
| PVC | Polyvinylchloride |
| θae | Average outdoor temperature |
| Rhe | Average outdoor relative humidity |
| θhr | Temperature after heat recovery |
| ηr | Efficiency of heat recovery |
| Фr | Loss by heat recovery ventilation |
| Epreh | Energy consumption for preheating |
| Etot | Total energy consumption |
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.