I have specified Fanger comfort model. So the only way to control PMV for the zones is by the zone temperature control actuators, controlling the zone's heating and cooling setpoints?
On Wednesday, September 24, 2014 10:50 AM, "'Brent Griffith' brent.griffith@xxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
You cannot really actuate PMV directly, you would need to alter the comfort level in the zone to get a different PMV result. For example, the native comfort controls in E+ (ZoneControl:Thermostat:ThermalComfort) dynamically calculate a new setpoint for the zoneâ??s HVAC system that would deliver the desired PMV in the zone. To get the PMV calculations going to be available for EMS sensor you only need to specify comfort model in the People object.
It could be that your Erl sensor is seeing an interim PMV result that is updated early in the timestep (before predictor) and by the end of the timestep you have
done some action to change the outcome (corrector), in which case they values should not be expected to agree. It depends on the calling point(s) and the details of whatever actuator you using.
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Tuesday, September 23, 2014 12:04 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] PMV
Sent: Tuesday, September 23, 2014 12:04 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] PMV
I already checked that, no the values are not lagging by one time step. The values are very different. If I want to actuate the PMV values, is it necessary to activate the thermal comfort thermostat so that the PMV actuator appears in the EDD file. If I have to activate the thermostat how can I do so so that only the actuator appears but the thermostat itself is not operational.
On Tuesday, September 23, 2014 1:41 PM, "'Brent Griffith' brent.griffith@xxxxxxxxxxxxxxxxxx
[EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
First check to see if the values are lagging by one timestep, e.g at 16:10 did the regular output have 0.58. Often the Erl value will be lagged one timestep behind a regular one.
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Tuesday, September 23, 2014 8:58 AM
To: Energy Plus Support Group; EnergyPlus_Support
Subject: [EnergyPlus_Support] PMV
Sent: Tuesday, September 23, 2014 8:58 AM
To: Energy Plus Support Group; EnergyPlus_Support
Subject: [EnergyPlus_Support] PMV
I am sensing the Zone Thermal Confort Fanger PMV values. I am then using them in IF statements and have them as Erl outputs. On the other hand, I am also viewing the regular zone thermal comfort Fanger PMVvalues as output. Problem is these two outputs Erl PMV values and regular PMV values for the zones should be same but they are not. Why?
For example at 16:20 Erl PMV values for top floor perimeter zone 4 is EMS:Erl Top Flr Zone 4 PMV[] (TimeStep)= 0.58
but regular PMV output for zone 4 top floor is
PERIMETER_TOP_ZN_4 PEOPLE:Zone Thermal Comfort Fanger Model PMV [](TimeStep)=0.26.
__._,_.___
Posted by: Fakeha Sehar <fakeha_s@xxxxxxxxx>
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.