@article{141781, author = {H. Guo and E. Teitelbaum and N. Houchois and M. Bozlar and F. Meggers}, title = {Revisiting the use of globe thermometers to estimate radiant temperature in studies of heating and ventilation}, abstract = { The globe thermometer has been considered a reliable instrument to quantify~mean radiant temperature~(MRT) since Bedford \& Warner isolated its readings from~air movement~in their 1934 paper so that radiation could be quantified. Recent expanded use of~radiant heating~and~cooling systems~has presented new challenges for the usage of globe thermometers in the built environment by causing additional radiant asymmetries and performance expectations. Therefore, we replicate the original Bedford \& Warner work to reconsider and develop a more holistic understanding of black globe performance and the determination of MRT in buildings. We recreate the MRT and~air temperature~separation to investigate the accuracy of globe thermometers on measuring MRTs. A radiantly heated open-plan laboratory and a radiantly cooled~conference room~were selected and measured with multiple globe thermometers and non-contacting~infrared sensors. The~globe temperature~results were then corrected with air movement to produce MRTs and compared against MRTs simulated from measured~surface temperatures. We demonstrate a significant impact of~air speed~on the MRTs obtained from globe thermometers. We also illustrate a less-investigated non-graybody~emissivity~variation and~spatial variation~of MRTs of up to 5~{\textdegree}C at the same height. We believe the increasing temporal and~spatial resolution~of digital sensors may create new challenges for using globe thermometers to measure MRTs, since fluctuating readings may~camouflage~potential MRT changes. Through a validation of our spatial MRT distribution with~experimental results, we believe there is a need for better sensors that could spatially resolve MRTs, and recognize issues with both air speed and emissivity. }, year = {2018}, journal = {Energy and Buildings}, volume = {180}, pages = {83-94}, url = {https://doi.org/10.1016/j.enbuild.2018.08.029}, language = {eng}, }