Study on thermal comfort by using an atmospheric pressure dependent predicted mean vote index

The thermal environment index Predicted Mean Vote is a descriptor largely applied to evaluate the comfort sensation of people in moderate environments. Software tools based on the Fanger's method have been created and used, which application is limited for the sea level atmospheric pressure. A...

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Bibliographic Details
Published in:Building and environment 2021-12, Vol.206, p.108370, Article 108370
Main Authors: Ruivo, Celestino Rodrigues, Gameiro da Silva, Manuel, Broday, Evandro Eduardo
Format: Article
Language:English
Subjects:
Air conditioning
Atmospheric pressure
Index of thermal comfort
Indoor environments
Indoor thermal environment
Insulation
Predicted Mean Vote index
Pressure dependence
Relative humidity
Sea level
Software
Software development tools
Thermal comfort
Thermal environments
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Summary:The thermal environment index Predicted Mean Vote is a descriptor largely applied to evaluate the comfort sensation of people in moderate environments. Software tools based on the Fanger's method have been created and used, which application is limited for the sea level atmospheric pressure. A procedure for estimating the index of thermal comfort of individuals in environments at air pressure different from barometric pressure 0 m of altitude was recently introduced. In present study, indoor air state associated with neutral thermal comfort conditions of individuals in seating activity are predicted for atmospheric pressure values in the range between 65.0 kPa and 101.3 kPa. It was observed that neutral temperature diminishes with the decrease of barometric pressure. Dependencies of index PMV on the activity level, the clothing insulation, relative, air velocity and on relative humidity for two atmospheric pressure values are investigated. It is concluded that the impact of pressure of the environment on the index of thermal comfort must be also considered when sizing an air-conditioning system. •PMV-PS method uses an environment air pressure-sensitive thermal comfort index.•Three correlations for the metabolic rate are considered in present study.•Influence of air pressure on the neutral temperature is investigated.•Not taking into account the altitude effect may lead to wrong sizing of HVAC systems.•PMV-PS method is a useful approach for further investigations.
ISSN:0360-1323
1873-684X
DOI:10.1016/j.buildenv.2021.108370