“…In order to circumvent the subjectiveness of both the PMV and PPD indexes, the majority of authors as well as practitioners opt for simply defining temperature envelopes to be respected in each environment [Mantovani and Ferrarini, 2015, Ma et al, 2015, Ben-Nakhi and Mahmoud, 2017. The reader is referred to [Garnier et al, 2014, Garnier et al, 2015, Gupta and Kar, 2018 for exceptions of this tendency. Besides temperature, carbon dioxide levels (CO 2 ), air humidity and pressure, and the presence of particles must also controlled, especially in the…”