Application of different ventilation strategies in residential buildings - case study

Abstract

Buildings have become a key issue in developing sustainable solutions due to their significant contribution to total CO2 emissions and substantial energy consumption. Special attention is devoted to building ventilation, which has a significant rate of building energy consumption. HVAC systems are essential for maintaining a healthy environment for building occupants. Natural ventilation uses natural forces such as wind and temperature differences to fresh air circulation. Mechanical ventilation systems are designed to provide continuous circulation of fresh air in buildings, thereby improving indoor air quality. Modernly designed mechanical ventilation systems utilize advanced technologies such as heat recovery units, which reduce energy consumption and improve building energy efficiency. This paper presents modeling of different ventilation strategies in a residential building, using EnergyPlus software. Simulations were provided for selected summer and winter days. Obtained results for natural ventilation showed zone ventilation heat losses and gains, while mechanical ventilation system with heat recovery is modeled with emphasis on indoor air quality.