Hi there,
a quick question regarding the locations of the sensors/measurements required for this credit.
As stated by Ashrae 55-2010, Air temperature
and air speed shall be measured at the 0.1, 0.6, and
1.1 m (4, 24, and 43 in.) and radiant asymmetry at 0.6 m (24 in.). I was wondering if these measurements are required for the permanent and continuous sensor system or just the periodic measurements for this credit? Otherwise, is it OK to have one sensor per each thermal zone installed at any height for at least the continuous monitoring system?
Thank you in advance!
Laura
Ben Stanley
Senior Sustainability ManagerWSP - Built Ecology
LEEDuser Expert
250 thumbs up
March 8, 2017 - 3:59 pm
Hi Laura,
In my experience, the measurement locations you cite from ASHRAE 55-2010 apply to the periodic measurements of air speed and radiant temperature but not to the permanent air temperature sensors. I think this is supported by the LEED reference guide language that states "at least one air temperature sensor must be installed for each thermal zone with occupied spaces. The sensors may be placed close to where the occupants are known to spend time. Sensors in the return air duct to the air-handling unit are not acceptable. Additional sensors are required if a single measurement point is not representative of the entire thermal zone because of its use or configuration, if a space includes both perimeter and core area, if a space can be subdivided (e.g., with a movable wall), or if other drivers of large air temperature variance are present."