Garretón, J Y; Rodriguez, R and Pattini, A (2016) Effects of perceived indoor temperature on daylight glare perception. Building Research & Information, 44(8), pp. 907-919. ISSN 0961-3218
Abstract
This research investigates the effects of perceived indoor temperature on glare sensation. A laboratory experiment was carried out where volunteers (n = 19) performed an office-like computer task. Three scenarios with sunspots over the desk were evaluated: a cold scenario, a comfort scenario and a hot scenario. All had the same vertical illuminance at the eye and luminance ratios. Discomfort glare was measured with the predictive daylight glare probability (DGP) model; actual perception of glare was assessed with glare sensation vote (GSV) scale; while thermal comfort was evaluated with thermal sensation vote (TSV) scale. In order to know how much the perceived temperature contributes to the model, an ordinal regression was performed. The result showed a Nagelkerke pseudo-R2 = 0.52, p = 0.001, indicating that the perceived temperature affected glare predictions. This is an improvement in the understanding of daylight glare, which will allow researchers and practitioners to make informed decisions about sustainable design and occupant comfort. In conclusion, a more comprehensive glare model should include perceived temperature as a variable of the current glare model. Also, the results suggest that DGP should be used only when the person is in thermal comfort.;This research investigates the effects of perceived indoor temperature on glare sensation. A laboratory experiment was carried out where volunteers (n = 19) performed an office-like computer task. Three scenarios with sunspots over the desk were evaluated: a cold scenario, a comfort scenario and a hot scenario. All had the same vertical illuminance at the eye and luminance ratios. Discomfort glare was measured with the predictive daylight glare probability (DGP) model; actual perception of glare was assessed with glare sensation vote (GSV) scale; while thermal comfort was evaluated with thermal sensation vote (TSV) scale. In order to know how much the perceived temperature contributes to the model, an ordinal regression was performed. The result showed a Nagelkerke pseudo-R 2 = 0.52, p = 0.001, indicating that the perceived temperature affected glare predictions. This is an improvement in the understanding of daylight glare, which will allow researchers and practitioners to make informed decisions about sustainable design and occupant comfort. In conclusion, a more comprehensive glare model should include perceived temperature as a variable of the current glare model. Also, the results suggest that DGP should be used only when the person is in thermal comfort.;
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | glare; daylight; natural light; offices; occupant satisfaction; visual comfort; thermal comfort; comfort; perceptions; building construction; temperature; facilities planning; office lighting |
| Index terms: | visual comfort, natural light, glare, occupant satisfaction, thermal comfort, practitioner, comfort, facilities planning, experiment, sensation, discomfort, thermal sensation, building construction, volunteer, office lighting, indoor temperature, sustainable design, illuminance, laboratory |
| Subjects: | environmental science, data collection methods, user-centered design, human factors and perception, practitioner, occupational health and safety management, research management, building performance, building construction, environmental engineering, health risk and incident analysis, design process |
| Topics: | Design Practice, Research Practice, Health and Safety, Sustainability, Construction Technology, Roles and Professions |
| Descriptive scope: | 3 PCE |
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