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| The HOBOs shown below were placed around the Ecotrust office on the 2nd floor at about the height of a seated person. The thermal comfort zone is indicated by the beige horizontal band covering 68 degrees to 76 degrees. Notice how these temperatures follow a pattern, essentially steadying at a plateau of 71.57 degrees (indicated by green line rollover), and then stabilizing there for most of the day. 2nd FLOOR HOBO MAP |
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| The HOBOs shown below were placed around the CFPC Office on the 3rd floor at about the height of a seated person. Notice that the temperatures here are much more sporadic than those of the Ecotrust Office, resulting in frequent jumps and drops in temperatures. 3RD FLOOR HOBO MAP |
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The green datum line is from Hobo S2, which was placed in the east 'display pod'. Notice that the temperatures here extend above the thermal comfort zone of 68 degrees to 76 degrees on Monday and Thursday during normal working hours, and on Monday, Tuesday, Wednesday, Thursday and Friday just before most occupants arrive. The dark blue datum line is from Hobo P2, which was placed at about the height of a seated person near the entrance of the office. Notice that P2 extends below the thermal comfort zone one time during a workday.
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| It appears from these graphs that there are time periods in certain spaces of the CFPC Office on the third floor when and where the temperatures at head height of a seated person extend out of ASHRAE's thermal comfort zone of 68-76 degrees. However, the situations in which the temperatures extended or fell out of the zone were few and mostly limited to the display pod, which is a space that is only used occasionally. These minor deviances are probably not causing notable discomfort to occupants. |
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HOWEVER We noticed a very significant pattern in these graphs that can begin to explain why occupants in the 3rd floor may feel more discomfort, even though the temperatures are within the comfort zone. The 2nd floor ambient temperatures plateau at a steady 71.57 degrees, and stay just around that all day. Conversely, the 3rd floor ambient temperatures jump up and down a few degrees as the overall daily heating cycle occurs, preventing occupants from being able to adjust to one stable temperature.
For example, on the graph to the left is an overlay of Ecotrust Hobos and Certified Forest Products Council Hobos for Friday, March 1, 2001.
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