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2019-03-05 17:13:52 -0500 commented question Too many figures in a Shading Overlap

How many total shading surfaces are there in this model?

2019-03-05 17:07:39 -0500 answered a question EnergyPlus: Can Refrigeration:AirChiller be connected to Refrigeration:SecondarySystem through a Glycol loop?

It should be possible to connect Refrigeration:AirChiller to a secondary system. Reference the Refrigeration:AirChiller

2019-03-05 16:58:28 -0500 commented answer When do you actually need a bypass pipe?

And note that the ice storage units have a built-in bypass to regulate how much flow goes through the ice coils.

2019-03-05 16:55:40 -0500 answered a question When do you actually need a bypass pipe?

A bypass pipe is not required as long at the pump flow is variable or the parallel components can take all of the pump o

2019-03-05 16:52:03 -0500 answered a question DOAS modeling with varying/scheduled OA cfm

The current best practice for this is: Use AirTerminal:SingleDuct:ConstantVolume:NoReheat which can reference a Design

2019-03-05 16:31:58 -0500 answered a question Frame's area too large

In EnergyPlus, the area of a window (fenestration) surface is the glazed area inside the frame. The frame is added outsi

2019-03-05 16:29:06 -0500 answered a question How to model an off-grid building?

I am not completely sure this can be done. All electric demands must be met. If the PV plus storage cannot meet the curr

2019-03-05 16:10:21 -0500 answered a question New date formatting in "RUNPERIOD" section of idf file? fileupdate does not deal with this

The file conversion probably did not complete - check the version number in the final idf. It's probably not v9.0. The

2019-03-05 16:07:25 -0500 edited answer IDF Version Updater failing to convert

There is a known problem with the v9.0.1 transition programs (for transitions from v8.9 or older). See #7010 for a worka

2019-03-05 16:06:42 -0500 answered a question IDF Version Updater failing to convert

There is a known problem with the v9.0.1 transition programs (for transitions from v8.9 or older). See #7010 for a worka

2019-03-05 16:02:05 -0500 commented answer Issues with multiple FunctionalMockupUnitImport:To:Variables for same FMU.

@Thierry Nouidui There was a bug in the v9.0-9.1 transition packaged in the v9.1 idd freeze release. If you pull current

2019-03-05 15:58:15 -0500 commented answer Output average demand over a specific period with EnergyPlus?

To answer both questions, each table expects all of the columns to share a common key name, so there is no syntax for sp

2019-03-05 15:53:36 -0500 commented answer Zone Ideal Loads mismatch

Most likely yes. Report the System Node temperatures and humidities to see what's happening to help understand.

2019-02-08 14:04:57 -0500 commented answer Error while modeling radiant underfloor cooling system

ZoneHVAC:LowTemperatureRadiant:VariableFlow should work fine as cooling-only. Make sure that all of the fields related t

2019-02-07 17:48:32 -0500 commented answer Error while modeling radiant underfloor cooling system

It's still complaining about missing nodes and schedules. Will need to see your idf file in order to help further. Eithe

2019-02-07 17:38:52 -0500 answered a question Model using Zero Heating and Cooling

In the table output, the last subtable in the ABUPS reports is "Comfort and Setpoint Not Met Summary" which shows 1000s

2019-02-07 16:43:07 -0500 commented question CENTRAL HEAT PUMP SYSTEM INPUT

Is this what you mean by an air cooled chiller-heater? https://unmethours.com/question/1898/air-cooled-heat-pumps-to-pro

2019-02-07 16:34:18 -0500 answered a question Output average demand over a specific period with EnergyPlus?

If you wanted the monthly and annual averages during certain time windows, then you could use Output:Table:Monthly with

2019-02-04 15:44:22 -0500 commented answer How to model condensing gas-fired DHW tank in EnergyPlus?

@mldichter Yes, no change to this. @Julien Marrec Seems it would be fairly straightforward to allow WaterHeater:Mixed to

2019-02-04 15:23:46 -0500 commented answer Error while modeling radiant underfloor cooling system

See EnvironmentalImpactFactors and FuelFactors.

2019-01-28 17:14:17 -0500 answered a question May you help me to understand following warnings, please?

Just guessing, but it appears that most of the HVAC objects in this file are not autosized and have values entered for f

2019-01-28 17:06:30 -0500 answered a question Humidistat setting in Eneryplus

HVACTemplate:Zone:IdealLoadsAirSystem tries to make things simple for you and it automatically creates a ZoneControl:Hum

2019-01-28 16:56:40 -0500 commented answer Error while modeling radiant underfloor cooling system

Because this is a radiant system, use output variables "Zone Radiant HVAC Heating Energy" and cooling.

2019-01-18 09:48:13 -0500 answered a question Why the building load is not constant even if the weather file/internal loads/thermostats are set constant?

Add output variables for Site Sky Temperature and all of the Surface Outside Face * variables (well, the key ones). That

2019-01-18 09:25:44 -0500 answered a question Is A/K or V/K same as %/C on Temperature Coefficient?

/K and /C are equivalent, but not %. Take the mfr %/C for Voc and multiply it by the value for Open Circuit Voltage [V]

2019-01-18 09:19:48 -0500 answered a question energyplus zip window

You mean the zip file that is available on the GitHub release page. That is not an installer. It's just an archival zip

2019-01-18 09:07:04 -0500 answered a question Design Builder AirCooled Chiller with CelDek Pad using AHU condensate.

The simplest approach would be to set the Chiller:Electric:EIR Condenser Type to EvaporativelyCooledand adjust the total

2019-01-18 08:50:08 -0500 commented question solar oriention effect on energyplus output

With ideal loads, you won't see any change in electricity, but you should see changes in District Cooling and District H

2019-01-18 08:42:35 -0500 answered a question EP-Launch simulation: lbl Window5 data not reading / causes crashes

The preferred method for exporting from Window is to generate a "Report" for a specific window and select Report Type "E

2019-01-08 17:25:31 -0500 commented answer Glycol Cooling coil with Temperature below zero in E+. How to model?

In theory, yes, can be used with refrigerant or brine. See example file SupermarketSecondary.idf to see how secondary sy

2019-01-08 17:18:31 -0500 answered a question EMS:ProgramCallingManager with 4 plant loops without overwriting?

If you have unique variable names for the actuators, then there should be no overlap. Check the detailed line-by-line ou

2019-01-08 17:16:27 -0500 commented answer Control LowTemperatureRadiant using indoor and outdoor temperature with EMS?

Oh, I see. You could use a unique availability schedule for each ZoneHVAC:LowTemperatureRadiant:ConstantFlow and then ac

2019-01-07 15:02:34 -0500 answered a question Error while modeling radiant underfloor cooling system

Based on the error messages, it appears that the radiant system has not been connected to a working plant loop. If that'

2019-01-07 14:54:41 -0500 answered a question OpenStudio Simulation Went Wrong. Help, Please!

A quick review of the HVAC system shows a single duct VAV system with reheat with a fixed supply temperature year-round

2019-01-07 14:35:29 -0500 edited answer Controlling the zone thermostat with thermal comfort models

In the EnergyPlusVn-m-0\ExamplesFiles folder, there are two files that index all of the example files. ExampleFiles.html

2019-01-07 14:34:58 -0500 answered a question Controlling the zone thermostat with thermal comfort models

In the EnergyPlusVn-0-0\ExamplesFiles folder, there are two files that index all of the example files. ExampleFiles.html

2019-01-07 14:26:57 -0500 commented answer Control LowTemperatureRadiant using indoor and outdoor temperature with EMS?

What is "TABS"? I am not sure I understand the question, but here is a suggestion: SET BoilerTABSday=0, IF (Outd

2019-01-07 14:15:48 -0500 commented answer Glycol Cooling coil with Temperature below zero in E+. How to model?

See example file RefrigeratedWarehouse.idf to see how Refrigeration:AirChiller is applied.

2018-12-31 09:56:30 -0500 commented question Command line interface (CLI) and EPMacro

But that would be the same on Windows - file extension.

2018-12-31 09:55:45 -0500 commented question Command line interface (CLI) and EPMacro

Not sure what else it could be, the CLI code is the same for Windows and Linux unless you happen to be using Win32 exe.

2018-12-31 09:35:36 -0500 answered a question Equipment not sizing

In the chiller objects, the "Reference Chilled Water Flow Rate" is not autosized. This can be seen in the "Component Siz

2018-12-31 09:11:20 -0500 answered a question Is there a way to model "proper" control of a UFAD system in EnergyPlus?

You are correct that the RoomAirSettings:* objects define the UFAD characteristics for the thermal stratification model.

2018-12-31 08:53:47 -0500 commented question Earth Tube Zone Sensible Cooling/heating Energy is unusual!

Please post a link here to the idf files, or send them to the helpdesk at energyplus-support@gard.com (include a link to

2018-12-31 08:49:41 -0500 answered a question Control LowTemperatureRadiant using indoor and outdoor temperature with EMS?

Disabling a boiler or chiller will not shut down the entire plant loop. Add an AvailabilityManager:Scheduled for each pl

2018-12-31 08:43:47 -0500 commented question Command line interface (CLI) and EPMacro

For both Windows and Linux, the CLI links the idf path to the current-working-directory/in.imf. From the error message,

2018-12-31 08:43:12 -0500 commented question Command line interface (CLI) and EPMacro

For both Windows and Linux, the CLI links the idf path to the current-working-directory/in.imf. From the error message,

2018-12-31 08:42:32 -0500 commented question Command line interface (CLI) and EPMacro

For both Windows and Linux, the CLI links the idf path to the <current working="" directory=""> /in.imf. From the

2018-12-31 08:42:05 -0500 commented question Command line interface (CLI) and EPMacro

For both Windows and Linux, the CLI links the idf path to the <current working="" directory="">/in.imf. From the e

2018-12-31 08:41:45 -0500 commented question Command line interface (CLI) and EPMacro

For both Windows and Linux, the CLI links the idf path to the <current working="" directory="">\in.imf. From the e

2018-12-31 08:17:51 -0500 commented answer Ground Slab/basement Modelling-water reservoirs and wells

Given that the thermal mass varies as water enters and leave the cistern, and these flows move energy in and out of the