Energy performance index of air distribution: Thermal utilization effectiveness

Ventilation indices for evaluation of airborne infection risk control performance of air distribution

“…This study develops the air utilization effectiveness ( AUE ) as an analogy to the thermal utilization effectiveness (a ventilation index regarding energy performance) [ 21 ]. AUE is the ratio of contaminant concentration change between the air exhaust and breathing zone to the contaminant concentration change between the air exhaust and air supply (Eq.…”

“…Although ventilation indices are widely used to indicate the airborne infection risk control performance of air distribution in practice because of their convenience, their applicability in evaluating the airborne infection risk control performance of air distribution is not yet clear. The monotonic relationship between the ventilation indices and airborne infection risk, particularly a linear relationship, makes the ventilation indices effectively indicate the airborne infection risk control performance of air distribution [ [19] , [20] , [21] , [22] , [23] ]. Novoselac and Srebric [ 17 ] found that ACE was less suitable for evaluating the air distribution with the known contaminant sources.…”

“…This study further validates the ventilation indices for airborne infection risk control performance evaluation of air distribution. Compared with the existing studies [ [19] , [20] , [21] , [22] , [23] ], the contributions of this study are as follows. First, as the ventilation indices are widely used to evaluate the airborne infection control performance of the air distribution, this study investigates the validity of using ventilation indices to indicate the airborne infection risk through the qualitative and quantitative analyses.…”

Integrated system of exhaust air heat pump and advanced air distribution for energy-efficient provision of outdoor air

“…When the energy performance is concerned, the advanced air distribution can be represented by the heat removal efficiency [19] , [20] , [62] . The heat removal efficiency has been widely used for the energy performance evaluation of advanced air distribution like stratum ventilation and displacement ventilation [19] , [20] , [42] , [43] , [63] , [64] . Since this study concerns the energy performance, air distribution is modeled by the heat removal efficiency.…”

“…The 1-D air temperature distribution in Fig. 4 is sufficient for the calculation of the heat removal efficiency [19] , [20] , [42] , [43] , [63] , [64] .

Fig.

…”