Coupling of integral and differential numerical models applied in the evaluation of integral thermal comfort, air quality and draught risk

Abstract

In this work is used the coupling of integral and differential numerical models applied in the evaluation of integral thermal comfort, indoor air quality (IAQ), Draught Risk (DR) and Air Distribution Index (ADI). In this study, a confined space, using a new Heating, Ventilation and Air-Conditioning (HVAC) system, based in confluent jets ventilation systems (CJVS) is used. This system is built with four vertical ducts, located in the corner of the wall surfaces, with horizontal nozzles turned to the two vertical walls. This study, done in summer conditions, evaluates the thermal comfort, the air quality, the DR around the occupants and the ADI for two possible arrangement of the nozzles: 0.5 m or 1.5 m. The results show that DR is acceptable for both cases but the ADI is better for the 0.5 m than the 1.5 m nozzles arrangement.