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A platform for research: civil engineering, architecture and urbanism
Effect of installing a venetian blind to a glass window on human thermal comfort
https://orcid.org/0000-0001-7368-6929
Abstract This paper studies the effect on the thermal environment caused by installing a curved venetian blind to a glass window in a building located in a tropical climate. A mathematical model was developed to determine the mean radiant temperature affected by solar radiation on a person sitting near a glass window with a venetian blind. The concept of shading fraction of the surface temperature of the glass window and blind is introduced. The predicted percentage of dissatisfied (PPD) was chosen as the thermal comfort index for this study. The experiment was performed in a test room with a 6 mm clear glass window to which a curved venetian blind was attached. The test was performed with blind settings at three different slat angles: 0°, 45° and −45°. The accuracy of the mathematical model was verified by comparing experimental results with predicted results. Agreement between experimental and predicted results was good. The effect of surface temperature and the effect of solar radiation on the mean radiant temperature and PPD were also studied. The discomfort of the person sitting near the glass window with a venetian blind is dependent on the level of solar radiation striking the body. The slat angle adjustment does affect the amount of solar radiation striking the person and hence, dictate the thermal environment of the space.
Highlights Shading fraction method is used to find the surface temperature of the fenestration. Mathematical model is developed for finding the thermal environment in a room. Amount of the solar radiation striking on the person is dependent on the slat angle. The discomfort comes from the solar radiation effect and surface temperature effect. The discomfort is dependent on the amount of solar radiation entering into the room.
Effect of installing a venetian blind to a glass window on human thermal comfort
https://orcid.org/0000-0001-7368-6929
Abstract This paper studies the effect on the thermal environment caused by installing a curved venetian blind to a glass window in a building located in a tropical climate. A mathematical model was developed to determine the mean radiant temperature affected by solar radiation on a person sitting near a glass window with a venetian blind. The concept of shading fraction of the surface temperature of the glass window and blind is introduced. The predicted percentage of dissatisfied (PPD) was chosen as the thermal comfort index for this study. The experiment was performed in a test room with a 6 mm clear glass window to which a curved venetian blind was attached. The test was performed with blind settings at three different slat angles: 0°, 45° and −45°. The accuracy of the mathematical model was verified by comparing experimental results with predicted results. Agreement between experimental and predicted results was good. The effect of surface temperature and the effect of solar radiation on the mean radiant temperature and PPD were also studied. The discomfort of the person sitting near the glass window with a venetian blind is dependent on the level of solar radiation striking the body. The slat angle adjustment does affect the amount of solar radiation striking the person and hence, dictate the thermal environment of the space.
Highlights Shading fraction method is used to find the surface temperature of the fenestration. Mathematical model is developed for finding the thermal environment in a room. Amount of the solar radiation striking on the person is dependent on the slat angle. The discomfort comes from the solar radiation effect and surface temperature effect. The discomfort is dependent on the amount of solar radiation entering into the room.
Effect of installing a venetian blind to a glass window on human thermal comfort
https://orcid.org/0000-0001-7368-6929
Abstract This paper studies the effect on the thermal environment caused by installing a curved venetian blind to a glass window in a building located in a tropical climate. A mathematical model was developed to determine the mean radiant temperature affected by solar radiation on a person sitting near a glass window with a venetian blind. The concept of shading fraction of the surface temperature of the glass window and blind is introduced. The predicted percentage of dissatisfied (PPD) was chosen as the thermal comfort index for this study. The experiment was performed in a test room with a 6 mm clear glass window to which a curved venetian blind was attached. The test was performed with blind settings at three different slat angles: 0°, 45° and −45°. The accuracy of the mathematical model was verified by comparing experimental results with predicted results. Agreement between experimental and predicted results was good. The effect of surface temperature and the effect of solar radiation on the mean radiant temperature and PPD were also studied. The discomfort of the person sitting near the glass window with a venetian blind is dependent on the level of solar radiation striking the body. The slat angle adjustment does affect the amount of solar radiation striking the person and hence, dictate the thermal environment of the space.
Highlights Shading fraction method is used to find the surface temperature of the fenestration. Mathematical model is developed for finding the thermal environment in a room. Amount of the solar radiation striking on the person is dependent on the slat angle. The discomfort comes from the solar radiation effect and surface temperature effect. The discomfort is dependent on the amount of solar radiation entering into the room.
Effect of installing a venetian blind to a glass window on human thermal comfort
Khamporn, Nopparat (author) / Chaiyapinunt, Somsak (author)
Building and Environment ; 82 ; 713-725
2014-10-23
13 pages
Article (Journal)
Electronic Resource
English
Effect of installing a venetian blind to a glass window on human thermal comfort
| British Library Online Contents | 2014
Effect of installing a venetian blind to a glass window on human thermal comfort
| Online Contents | 2014
Effect of installing a venetian blind to a glass window on human thermal comfort
| British Library Online Contents | 2014