Our analysis of the collected data has proven that conditions in the library at Ash Creek Intermediate School are consistently cooler than comfort standards provided by ASHRAE 55-1992.

Comparison of graphs showing thermal conditions in several places in the library and graphs showing the heat load coming from the vents in the library confirm that thermal comfort conditions in the library are primarily driven by the HVAC system. It follows that the HVAC system in the library at Ash Creek Intermediate School are failing to produce conditions specified in ASHRAE 55-1992.

We were a little surprised to find that our hypothesis was true. Initially when looking at the data it seemed as though the conditions were within the standard. However, upon further analysis, we found the opposite to be true. We have tried to think of reasons that the library is less than adequate.

One possible reason for the library’s failure to meet the standard could be the placement of the thermostat in the library. The temperature in the library is likely monitored from the thermostat and an error in placing the thermostat could be detrimental to the resulting conditions. We believe that the thermostat is placed in a relatively warm area within the library. The proximity of the thermostat to the librarian’s computer and the clerestory windows on the east side of the room could easily throw off readings taken from the thermostat, and the resulting supply of warm air to the library.

Another possible reason for the failure of the library to meet ASHRAE 55-1992 standards is that the HVAC system could be inappropriately calibrated. Perhaps the mechanical engineers of the building planned for a higher met level in children, or a more active activity than might be expected to occur in a library due to the age of the majority of the occupants.

A third possible reason for the library’s coolness could be that the HVAC is on a schedule that is inappropriate for the space. Graphs in the analysis section showing heat delivery from the vents in the library prove that the HVAC system is on some sort of predetermined schedule. The system must be set in order for it to go on at 4 a.m. daily. It is possible that the system is not scheduled to begin early enough in the morning for appropriate thermal conditions or that it is scheduled to go off at inappropriate times during the day.