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Air turbulence and sensation of draught

Fanger, P. O., Melikov, A. K., Hanzawa, H. and Ring, J.
1988
Energy and Buildings, 12(1): 21-39

Fanger, P. O., Melikov, A. K., Hanzawa, H. and Ring, J., (1988), "Air turbulence and sensation of draught", Energy and Buildings, 12(1): 21-39.
Abstract:
The impact of turbulence intensity (Tu) on sensation of draught has been investigated. Fifty subjects, dressed to obtain a neutral thermal sensation, were in three experiments exposed to air flow with low (Tu<12%), medium (20%55%) turbulence intensity. In each experiment the sedentary subjects were exposed to six mean air velocities ranging from 0.05 m/s to 0.40 m/s. The air temperature was kept constant at 23ˇăC. They were asked whether and where they could feel air movement and whether or not it felt uncomfortable. The turbulence intensity had a significant impact on the occurence of draught sensation. A model is presented which predicts the percentage of people dissatisfied because of draught as a function of air temperature, mean velocity and turbulence intensity. The model can be a useful tool for quantifying the draught risk in spaces and for developing air distribution systems with a low draught risk.

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Author Information and Other Publications Notes
Fanger, P. O.
Technical University of Denmark, Kongens Lyngby, Denmark,
  1. Airflow characteristics in the occupied zone of ventilated spaces.
  2. Impact of temperature and humidity on the perception of indoor air qualit
  3. Indoor air quality in the 21st century: search for excellence
  4. Subjective perceptions, symptom intensity and performance: a comparison of two independent studies, both changing similarly the pollution load in an office
  5. The impact of sorption on perceived indoor air quality.
  6. Thermal Comfort
  7. Ventilation and health in non-industrial indoor environments: report from a European Multidisciplinary Scientific Consensus Meeting (EUROVEN)  
Melikov, A. K.
  1. Accuracy Limitations for Low-Velocity Measurements and Draft Assessment in Room
  2. Comparison of different methods for the determination of dynamic characteristics of low velocity thermal anemometers
  3. Methods for air cleaning and protection of building occupants from airborne pathogens
  4. Requirements and guidelines for low velocity measurements
  5. Total uncertainty of low velocity thermal anemometers for measurement of indoor air movements  
Hanzawa, H.
  1. Airflow characteristics in the occupied zone of ventilated spaces.  
Ring, J.
     


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