PMV/PPD calculations

Hello, My project was given the following comment. We haven't seen this comment before and we don't know how we would provide PMV/PPD calculations. Can anyone on here help to clarify? Thanks in advance! ___________________________________________________ However, although the narrative provides sufficient information to confirm that the thermal comfort conditions meet ASHRAE 55 requirements for the typical office space, dining space, and meeting rooms (since Figure 5.2.1.1 of the Graphical Method can be applied), sufficient information has not been provided for the kitchen/cooking areas. Figure 5.2.1.1 would not apply to these spaces since the metabolic rates listed are between 1.6 and 2.0 which exceeds the upper limit of 1.3 met for using the Graphical Method. TECHNICAL ADVICE: Please provide further information, such as PMV/PPD calculations to demonstrate that the thermal comfort conditions for the kitchen/cooking areas meet ASHRAE 55 requirements.