Numerical analysis of the methods for reducing the energy use of air-conditioning systems in non-uniform indoor environments

摘要: Abstract Previous studies have shown that using efficient airflow distributions for a non-uniform indoor environment can reduce the space cooling load significantly. However, system (SCL) of air-conditioning is decreased only little when fresh-air ratio small, causing limited decrease in energy use (SEU). To fully exploit energy-saving potentials to SEU, SCL large-space building with different was simulated, and SEU compared between single source multiple low-grade sources handle air. The results show (1) actually provide air; contrast, will abandon result saving; (2) supply air, return fresh air make available, rate could be 13.9%–27.5% numerical cases displacement ventilation; (3) although increase inefficient grade increased significantly so 22.9% more needed case short-circuit ventilation. This study beneficial design systems environments higher capacity.