Effect of the Evaporative Cooling on the Human Thermal Comfort and Heat Stress in a Greenhouse under Arid Conditions
Joint Authors
al-Helal, Ibrahim M.
Abdel-Ghany, Ahmed M.
Shady, M. R.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-07
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Thermal sensation and heat stress were evaluated in a plastic greenhouse, with and without evaporative cooling, under arid climatic conditions in Riyadh, Saudi Arabia.
Suitable thermal comfort and heat stress scales were selected for the evaluation.
Experiments were conducted in hot sunny days to measure the required parameters (i.e., the dry and wet bulb temperatures, globe temperature, natural wet bulb temperature, and solar radiation flux) in the greenhouse.
The results showed that in the uncooled greenhouse, workers are exposed to strong heat stress and would feel very hot most of the day time; they are safe from heat stress risk and would feel comfortable during night.
An efficient evaporative cooling is necessary during the day to reduce heat stress and to improve the comfort conditions and is not necessary at night.
In the cooled greenhouse, workers can do any activity: except at around noon they should follow a proposed working schedule, in which the different types of work were scheduled along the daytimes based on the heat stress value.
To avoid heat stress and to provide comfort conditions in the greenhouses, the optimum ranges of relative humidity and air temperature are 48–55% and 24–28°C, respectively.
American Psychological Association (APA)
Abdel-Ghany, Ahmed M.& al-Helal, Ibrahim M.& Shady, M. R.. 2013. Effect of the Evaporative Cooling on the Human Thermal Comfort and Heat Stress in a Greenhouse under Arid Conditions. Advances in Meteorology،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-465894
Modern Language Association (MLA)
Abdel-Ghany, Ahmed M.…[et al.]. Effect of the Evaporative Cooling on the Human Thermal Comfort and Heat Stress in a Greenhouse under Arid Conditions. Advances in Meteorology No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-465894
American Medical Association (AMA)
Abdel-Ghany, Ahmed M.& al-Helal, Ibrahim M.& Shady, M. R.. Effect of the Evaporative Cooling on the Human Thermal Comfort and Heat Stress in a Greenhouse under Arid Conditions. Advances in Meteorology. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-465894
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-465894