xchen's profile - activity

Coil:Heating sizing temperature not correct In my model with a DOAS 100% OSA system, Coil Entering Air Drybulb at Ideal

I made a visualizer for nodes using the bnd file, bndVisualizer. Hopefully that can help.

From what I read in the link below, when using the ProportionalControls, the zone CO2 concentration is considered in osa

Thanks Keigo. I tested it on a 5 zone model and found that I need to do the following to enable ProportionalControlBased

DesignSpecification:OutdoorAir ProportionalControlBasedOnOccupancySchedule method I'm reading the Input Output Reference

DesignSpecification:OutdoorAir ProportionalControlBasedOnOccupancySchedule method I'm reading the Input Output Reference

DesignSpecification:OutdoorAir ProportionalControlBasedOnOccupancySchedule method I'm reading the Input Output Reference

DesignSpecification:OutdoorAir ProportionalControlBasedOnOccupancySchedule method I'm reading the Input Output Reference

Thanks rraustad. I will try look into the example file. I also want to know how this is calculated in the engine, someth

Thanks rraustad. What is the zonecrossmixing airflow you used in this exercise, and how much higher or lower is it compa

How does ZoneCrossMixing object in zone affects sizing? I have ZoneCrossMixing objects in both the source and receiving

I looked up the EnergyPlus repo on github and it seems to be a flag for autosize. https://github.com/NREL/EnergyPlus/blo

For example, in the Coil Sizing Details Report, "Coil Sensible Capacity at Ideal Loads Peak [Btu/h]" for the example zon

For example, in the Coil Sizing Details Report, "Coil Sensible Capacity at Ideal Loads Peak [Btu/h]" for the example zon

Difference of zone heating load reported in HVAC Sizing Summary and Coil Sizing Summary I have a VAV with reheat system

It turns out the cause for the variation is because I had ZoneCrossMixing objects in the model, which mix air across a b

It turns out the cause for the variation is because I had ZoneCrossMixing objects in the model, which mix air across a b

After poking around, I think this is caused by the ZoneCrossMixing objects in my model, similar to this post here, https

I think the fact that I have an availability manager that turns of chiller in winter season causes this abnormal behavio

So I changed the system to a 100% OSA, constant volume but still see higher CO2 concentration in summer and lower in win

This is a core zone without any exterior surfaces and no infiltration defined.

No the outdoor air does not change by season. And the supply air does not change by season either.

Why does Zone Air CO2 Concentration output vary by season I plotted out the hourly "Zone Air CO2 Concentration" output a

No the outdoor air does not change by season.

Why does Zone Air CO2 Concentration output varies by season I plotted out the hourly "Zone Air CO2 Concentration" output

Why does Zone Air CO2 Concentration output varies by season I plotted out the hourly "Zone Air CO2 Concentration" output

Coil:Cooling:Water has cooling rate output when chilled water flow is 0 In my energyplus 9.5 model for a VAV reheat AHU,

Create .rdd without running simulation Is there a way to get the .rdd file straight from an idf file without running any

Unit heater sizing with no outdoor air My model has both PTAC and unit heater in zones. PTAC provides cooling only (heat

Both design days and a run period using a epw weather file.

Energyplus water heater sizing -99999.0 In the energyplus html report, I noticed that the Equipment Summary section re

Does the OS:AirTerminal:SingleDuct:InletSideMixer provide any outside air control for the zone?

I'm trying to model a DOAS system with four pipe fan coils and osa/return air mixing before supply to the fan coils, using this configuration.

When I check the primary airflow for the inlet mixer, it does not seem to control for minimum outside air for the zone.

The four pipe fan coil object only provide maximum osa input and schedule.

My question is how can I model the system to make sure that the DOAS unit delivers minimum required outside air cfm to the zone? I'm using the latest openstudio v2.8.1.

Energyplus documentation shows there's a "Design Specification Outdoor Air Object" field and "Per Person Ventilation Rate Mode" field. But no input shown in openstudio.

Actually I was able to get it from the .hpp files.

Besides the getter and setters, is there a way to get the constructor for an object? For example, what's in the bracket:

I have multiple version openstudio installed and when I check in terminal on mac, it returns version 2.6. How can I change it to version 3.1.0 so that I can run 3.1.0 models?

openstudio openstudio_version

Thanks, it'll be really helpful to include this information in the OS command line interface help file.

how to change openstudio version in CLI on mac I have multiple version openstudio installed and when I check in terminal

I tried and it returned a list of methods that contain "equipment", including "removeEquipment", but not "addEquipment".

I tried use .instance_methods(false) and noticed that what I got did not 100% match what's on the SDK website. For examp

Is there a way to get all the os objects and the public member function in some format of data structure? For example, based on the class reference here, https://openstudio-sdk-documentation....

BuildingStory:

.defaultConstructionSet

.defaultScheduleSet

.renderingColor

.resetDefaultConstructionSet

...

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