Energy saving, indoor thermal comfort and indoor air quality evaluation of an office environment using corner impinging jet ventilation

Abstract

The performance of a corner based impinging jet ventilation system (CIJV) in an office environment was evaluated numerically. The evaluation was done both in terms of the local thermal comfort and the local indoor air quality. Three different inlet configurations were tested for a range of outdoor temperatures that included both winter and summer conditions. In terms of indoor air quality, the results showed that CIJV performed better than a traditional mixing system. The study also revealed that CIJV creates a stronger temperature stratification in summertime compared to wintertime. When evaluating the energy saving potential the results showed a possible reduction of 7% for the ventilation flowrate when the outdoor temperatures were between −15 °C and −5 °C, 8% when the outdoor temperatures were between 0 °C and 10 °C and 9% when the outdoor temperatures were between 15 °C and 25 °C.