Asked by: Spiridon Marievskyhome and garden indoor environmental quality
What is PMV and PPD?
Last Updated: 10th April, 2020
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Also to know is, what is the PMV?
PMV is an index that aims to predict the mean value of votes of a group of occupants on a seven-point thermal sensation scale. These variables, along with given inputs for clothing insulation, relative humidity, and mean radiative temperature provide the basis to calculate PMV.
Similarly, what is PPD in thermal comfort? PPD - Predicted Percentage Dissatisfied Index Predicted Percentage Dissatisfied - PPD - index is a quantitative measure of the thermal comfort of a group of people at a particular thermal environment.
Similarly one may ask, what is PMV thermal comfort?
The predicted mean vote (PMV) was developed by Povl Ole Fanger at Kansas State University and the Technical University of Denmark as an empirical fit to the human sensation of thermal comfort. It predicts the average vote of a large group of people on the a seven-point thermal sensation scale where: +3 = hot. +2 = warm.
How do you calculate PMV?
The value of PMV is calculated from the heat balance of the human body, in this case - 2.70 W/m2, obtained by the difference between the heat produced [(MW) = 69.8 W/m2] and the sum of the exchanges with the surrounding environment (Q = 72.48 W/m2).