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Fanger Model PPD output problems

asked 2020-04-09 11:30:48 -0500

michalis Terzo's avatar

updated 2020-04-09 14:12:07 -0500

__AmirRoth__'s avatar

I have a model with HVACs in EnergyPlus and i have this people objects : All peoples are in zones allDays until 24:00 , Fraction Radiant: 0.3 in all zones , Activity schedule: allDays until 24:00 with value 117 , Work efficiency:0.7 , Air velocity: 0.25 clothing factor 1 ,1 people per zone and i use PTAC HVAC the Zone Air Temperature change to the setpoint .I try 15 to 30 setpoints and the PPD comfort outputs is always 100% can help me anyone ?

Thanks

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answered 2020-05-21 16:59:55 -0500

Ag's avatar

updated 2020-07-10 02:51:09 -0500

Work efficiency 0.7 is not reasonable.

Usually it shlud be 0 or around it. It rapresent the mechanical work done by people, e.g. the difference in height going up the stairs that in a minimum part of the metabolic rate.

Plase see calc below (from Fanger equations), as example:

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Asked: 2020-04-09 10:56:08 -0500

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Last updated: Jul 10 '20

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