I am unable to figure about below
I have three floors, with one core zone and five perimeter zones each. When the core zone cooling set point is 24C, the top floor is slightly more hot (higher PMV index) as it receives more sunlight, than the mid and bottom floors. Similarly, mid floor has higher PMV index than bottom.
Now when I raise the set point to 27C, I notice that mid floor has the lowest PMV index. Bottom floor has much higher PMV index than mid floor. The sensible cooling rate is higher than that of mid floor, why? Bottom floor PMV index should still have been the lowest.