[TRNSYS-users] Calculation of PMV and PPD

[Jeroen Van der Veken]

Dear Kim,
We experienced the same problem when calculating the PMV at high  
temperatures (above 25°C), even with inclusion of the same RH% and  
local wind speed.
It's probably safer to calculate the PMV in a spreadsheet for those cases.

Best regards,
Jeroen Van der Veken



Quoting Kim Goethals <kim.goethals at ugent.be>:

> Dear TRNSYS users,
>
> When I compare the outputted PMV and PPD of TRNSYS with the results
> which I have calculated using the equations in accordance with ISO
> 7730, the PMV and PPD differ on average respectively 0.18 and 10. At
> first I have used the mean surface temperature of the room. I have also
> calculated the mean radiant temperature estimated from the values of
> the plane radiant temperatures for a sitting and a standing person with
> different orientations. However, none of the calculated values of the
> mean radiant temperature produces the same PMV and PPD as outputted in
> TRNSYS. Can somebody explain me this?
>
> Thanks in advance,
> best regards,
> Kim
>
> -- 
> kim goethals
>
> engeneer-architect
>
> department of architecture and urban planning
>
> faculty of engineering
>
> ghent university
>
> t + 32 (0)9 264 78 61
>
> f + 32 (0)9 264 41 85
>
> www.architectuur.ugent.be



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