Hi,

We have a warehouse building with office section. In contrast to office areas that are mechanically ventilated and cooled, the reception area is just mechanically ventilated (i.e. not cooled). This space failes on the ISO7730 criteria in summer (we are using Option 2 of the credit).

Question:

Would that be permissible to use the EN 15251:2007 - adaptive thermal comfort approach for the given space for summer? (we understand that this method is primarily for naturally conditioned spaces, but given that the space is not condtitioned [i.e. not cooled as per se], we are building on the logic that the adaptive thermal comfort model [i.e. based on the running mean of external temperature] would be better suited for the given application). Given that the air exchange is facilitated mechanically and not naturally, we would limit the air speed to 0.2m/s (summer elevated).

We are using the IES VE software, where the 15251:2007 nat vent method is implemented within the CIBCE TM52 report.

Has anybody ever taken this route?

Thanks for any thoughs on this.

Anna K.