New feature - ASHRAE 90.1 SZVAV control for Unitary Systems #5994

rraustad · 2017-01-27T20:32:22Z

Pull request overview

ASHRAE Standard 90.1 requires low speed air flow when zone loads are 50% of design. AirloopHVAC:UnitarySystem now conforms to this specification. As zone loads increase, the fan speed increases while maintaining a user specified outlet air temperature. When fan speed reaches maximum speed, outlet air temperature is allowed to increase to maintain zone thermostat set point temperatures.

Work Checklist

Add to this list or remove from it as applicable. This is a simple templated set of guidelines.

Title of PR should be user-synopsis style (clearly understandable in a standalone changelog context)
At least one of the following appropriate labels must be added to this PR to be consumed into the changelog:
- Defect: This pull request repairs a github defect issue. The github issue should be referenced in the PR description
- Refactoring: This pull request includes code changes that don't change the functionality of the program, just perform refactoring
- NewFeature: This pull request includes code to add a new feature to EnergyPlus
- Performance: This pull request includes code changes that are directed at improving the runtime performance of EnergyPlus
- DoNoPublish: This pull request includes changes that shouldn't be included in the changelog

Review Checklist

This will not be exhaustively relevant to every PR.

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests Conflicts: doc/input-output-reference/src/overview/group-unitary-equipment.tex

rraustad · 2017-02-10T20:24:02Z

This appears to be working well although I still need to test other configurations and weather to be sure.

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

Myoldmopar · 2017-02-14T02:36:03Z

idd/Energy+.idd.in

@@ -52999,9 +53001,13 @@ AirLoopHVAC:UnitarySystem,
       \type choice
       \key Load
       \key SetPoint
+       \key ASHRAE90VariableFan


I won't hold anything up if this key has already been approved during calls, but I will say that, to me, ASHRAE90VariableFan doesn't have a good feel to it. Maybe SingleZoneVAV? SingleZoneVariable?

It was discussed early on, but if it strikes you as odd now, then we should revisit it.

Pausing......I don't really care that much. I really don't want to make a big discussion, but it seems like the other two keys for that object are specific, clear control terms. This new key should also be a clear control term. Is this control mode something specific to only ASHRAE? Or is it just that ASHRAE requires it?

The choice key matches what is used in fan coil. I don't mind changing this now since I have a few other details to correct. The term is meant to describe the ASHRAE 90.1 method of two- or variable-speed fans used with DX and water coils, and allowing low speed fan during low load conditions. If it were to change, I do like SingleZoneVAV although UnitarySystem has a multi-zone capability.

ZoneHVAC:FourPipeFanCoil, A3 , \field Capacity Control Method \required-field \type choice \key ConstantFanVariableFlow \key CyclingFan \key VariableFanVariableFlow \key VariableFanConstantFlow \key MultiSpeedFan \key ASHRAE90VariableFan

There are so many similar choices in the fan coil that ASHRAE90 is almost required to distinguish this from the other variable fan options. But for the UnitarySystem, I like SingleZoneVAV. The "Load" option works off the single control zone as well, correct?

Correct. Both SingleZoneVAV and Load require a control zone name input. I'll make the change.

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

rraustad · 2017-02-14T19:19:09Z

Finally got the docs to build and will be uploading a new version with minor edits (e.g., get rid of "ASHRAE' in docs, reformat lists, etc.). I'll wait on comments before committing a new version.

…791-New-Feature---SZVAV-Code-and-Unit-Tests

rraustad · 2017-02-15T16:25:50Z

I am comfortable with what I see as diff's from the CI. The one big MTR diff I can't replicate since all files here show no diff's between develop and this branch. I still have one more check-in to update my changes to the docs but am waiting on comments before that happens.

* * * * * * * * * * * * 
HVACTemplate-5ZoneUnitarySystem.csv vs HVACTemplate-5ZoneUnitarySystem_new.csv
All Records are Equal.    48 records compared
* * * * * * * * * * * * 
UnitarySystem_5ZoneWaterLoopHeatPump.csv vs UnitarySystem_5ZoneWaterLoopHeatPump_new.csv
All Records are Equal.    48 records compared
* * * * * * * * * * * * 
UnitarySystem_DXCoilSystemAuto.csv vs UnitarySystem_DXCoilSystemAuto_new.csv
All Records are Equal.    48 records compared
* * * * * * * * * * * * 
UnitarySystem_FurnaceWithDXSystemRHcontrol.csv vs UnitarySystem_FurnaceWithDXSystemRHcontrol_new.csv
All Records are Equal.    480 records compared
* * * * * * * * * * * * 
UnitarySystem_HeatPumpAuto.csv vs UnitarySystem_HeatPumpAuto_new.csv
All Records are Equal.    48 records compared
* * * * * * * * * * * * 
UnitarySystem_MultiSpeedCoils_SingleMode.csv vs UnitarySystem_MultiSpeedCoils_SingleMode_new.csv
All Records are Equal.    576 records compared
* * * * * * * * * * * * 
UnitarySystem_VSHeatPumpWaterToAirEquationFit.csv vs UnitarySystem_VSHeatPumpWaterToAirEquationFit_new.csv
All Records are Equal.    1536 records compared
* * * * * * * * * * * * 
UnitarySystem_WaterCoils_wMultiSpeedFan.csv vs UnitarySystem_WaterCoils_wMultiSpeedFan_new.csv
All Records are Equal.    480 records compared
* * * * * * * * * * * *

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

rraustad · 2017-02-15T21:52:26Z

Considering this the final commit.

rraustad · 2017-02-15T21:55:12Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -1479,54 +1414,6 @@ namespace HVACUnitarySystem {
 			}
 		}

-		// Find the number of zones (zone Inlet Nodes) attached to an air loop from the air loop number


Moved this code to sizing since I needed to know the control zone fraction in order to autosize the min/max temperature limits.

rraustad · 2017-02-15T21:56:32Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -2221,7 +2110,25 @@ namespace HVACUnitarySystem {

 			SizingMethod = SystemAirflowSizing;

-			if ( UnitarySystem( UnitarySysNum ).NoCoolHeatSAFMethod == FractionOfAutoSizedCoolingValue ) {
+			if ( UnitarySystem( UnitarySysNum ).NoCoolHeatSAFMethod <= SupplyAirFlowRate && UnitarySystem( UnitarySysNum ).ControlType == CCM_ASHRAE ) {
+				SizingMethod = AutoCalculateSizing;


autosizes no load air flow rate to 67% of max if using DX coils, otherwise 50%

rraustad · 2017-02-15T21:57:24Z

src/EnergyPlus/HVACUnitarySystem.cc

+
+
+		if ( UnitarySystem( UnitarySysNum ).ControlType == CCM_ASHRAE ) {
+


autosize no load air flow for single zone VAV model

rraustad · 2017-02-15T21:58:29Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -3136,6 +3122,10 @@ namespace HVACUnitarySystem {
 				UnitarySystem( UnitarySysNum ).ControlType = LoadBased;
 			} else if ( SameString( Alphas( iControlTypeAlphaNum ), "SetPoint" ) ) {
 				UnitarySystem( UnitarySysNum ).ControlType = SetPointBased;
+			} else if ( SameString( Alphas( iControlTypeAlphaNum ), "ASHRAE90VariableFan" ) ) {
+				UnitarySystem( UnitarySysNum ).ControlType = CCM_ASHRAE;


Really! this needs to be changed to SingleZoneVAV

Do you mean this still needs to be changed?

Yes, this is the key field from the idd. I'll test to make sure it works and check in a final today.

rraustad · 2017-02-15T22:00:16Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -6133,6 +6140,52 @@ namespace HVACUnitarySystem {
 				}
 			}

+			// check for specific input requirements for ASHRAE90.1 model
+			if ( UnitarySystem( UnitarySysNum ).ControlType == CCM_ASHRAE ) {


checking here for coils allowed for the SingleZoneVAV model.

rraustad · 2017-02-15T22:01:31Z

src/EnergyPlus/HVACUnitarySystem.cc

-								TempMaxPLR = 1.0; // enforce a perfect 1.0 at the top end
+		// use the ASHRAE 90.1 method of reduced fan speed at low loads
+		if ( UnitarySystem( UnitarySysNum ).simASHRAEModel ) {
+


here is the single zone VAV model

rraustad · 2017-02-15T22:01:55Z

src/EnergyPlus/HVACUnitarySystem.cc

+		if ( UnitarySystem( UnitarySysNum ).simASHRAEModel ) {
+
+			// set up mode specific variables to use in common function calls
+			if ( CoolingLoad ) {


set up locals based on cooling or heating load to be used in common calls

rraustad · 2017-02-15T22:02:23Z

src/EnergyPlus/HVACUnitarySystem.cc

+				coilAirOutletNode = 0;
+			}
+			// set up RegulaFalsi variables
+			Par( 1 ) = double( UnitarySysNum );


set up RegulaFalsi arguments and only change when needed in the model

rraustad · 2017-02-15T22:02:57Z

src/EnergyPlus/HVACUnitarySystem.cc

+			//                     Step 9: not enough cooling or heating, increase coil capacity
+			//       DONE
+			//
+			// Step 1: set min air flow and full coil capacity


Then follow Step x instructions

rraustad · 2017-02-15T22:03:38Z

src/EnergyPlus/HVACUnitarySystem.cc

 							}
-							SetSpeedVariables( UnitarySysNum, true, TempMaxPLR );
-							CalcUnitarySystemToLoad( UnitarySysNum, AirLoopNum, FirstHVACIteration, TempMaxPLR, HeatPLR, OnOffAirFlowRatio, TempSensOutput, TempLatOutput, HXUnitOn, _, _, CompressorONFlag );


Nothing deleted here, Git is just confused.

rraustad · 2017-02-15T22:04:22Z

src/EnergyPlus/HVACUnitarySystem.cc

+			if( coilLoopNum > 0 ) SetComponentFlowRate( Node( coilFluidInletNode ).MassFlowRate, coilFluidInletNode, coilFluidOutletNode, coilLoopNum, coilLoopSide, coilBranchNum, coilCompNum );
+
+		} else { // not ASHRAE model
+


if not single zone VAV, then do what we've always done.

rraustad · 2017-02-15T22:05:29Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -6945,155 +6935,567 @@ namespace HVACUnitarySystem {
 			// if no load, or only a moisture load which can't be met at PLR=1, RETURN
 			return;
 		}
-		// must test to see if load is bounded by capacity before calling RegulaFalsi
-		if ( ( HeatingLoad && ZoneLoad < SensOutputOn ) || ( CoolingLoad && ZoneLoad > SensOutputOn ) ) {


These next pink code were not deleted, they are now part of he ELSE after the IF ASHRAE model code...see below at ESLE

rraustad · 2017-02-15T22:06:00Z

src/EnergyPlus/HVACUnitarySystem.cc

-							TempMaxPLR += 0.1;
-							if ( TempMaxPLR > 0.95 && TempMaxPLR < 1.05 ) {
-								TempMaxPLR = 1.0; // enforce a perfect 1.0 at the top end
+		// use the ASHRAE 90.1 method of reduced fan speed at low loads


This next line is the IF ASHRAE model

rraustad · 2017-02-15T22:06:46Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -7258,6 +7660,172 @@ namespace HVACUnitarySystem {

 	}

+	Real64
+	CalcUnitarySystemWaterFlowResidual(


new function to iterate on either air flow or coil capacity

rraustad · 2017-02-15T22:07:47Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -8108,7 +8610,11 @@ namespace HVACUnitarySystem {
 			SimulateHeatingCoilComponents( CompName, FirstHVACIteration, _, 0, _, _, UnitarySystem( UnitarySysNum ).FanOpMode, PartLoadRatio, UnitarySystem( UnitarySysNum ).HeatingSpeedNum, UnitarySystem( UnitarySysNum ).HeatingSpeedRatio );
 			UnitarySystem( UnitarySysNum ).HeatingCycRatio = PartLoadRatio;
 		} else if ( SELECT_CASE_var == Coil_HeatingWater ) {
-			mdot = min( Node( UnitarySystem( UnitarySysNum ).HeatCoilFluidOutletNodeNum ).MassFlowRateMaxAvail, UnitarySystem( UnitarySysNum ).MaxHeatCoilFluidFlow * PartLoadRatio );


to trick the water coils to use a different PLR than the fan

rraustad · 2017-02-15T22:09:24Z

src/EnergyPlus/HVACUnitarySystem.cc

 		// SUBROUTINE LOCAL VARIABLE DECLARATIONS:
 		int InletNode; // inlet node number
 		Real64 AverageUnitMassFlow; // average supply air mass flow rate over time step
 		int SpeedNum; // speed for multi-speed or variable-speed coils
 		bool FanOn;
+		Real64 fanPartLoadRatio; // local variable for PLR



here I introduced a local fanPLR variable so I could bait and switch when the ASHRAE model was active. The fan PLR and coil PLR are independent. Maybe a better way to do this, but this is what's here now.

rraustad · 2017-02-15T22:11:34Z

src/EnergyPlus/ReportSizingManager.cc

@@ -1238,6 +1238,22 @@ namespace ReportSizingManager {
 						ShowContinueError( "SizingString = " + SizingString + ", DataCapacityUsedForSizing = " + TrimSigDigits( DataCapacityUsedForSizing, 1 ) );
 						ShowContinueError( "SizingString = " + SizingString + ", DataFlowUsedForSizing = " + TrimSigDigits( DataFlowUsedForSizing, 1 ) );
 					}


New function to calculate SAT based on zone temp and not coil inlet temp. Using zone temp represents SAT needed to meet a zone load, using coil inlet temp represents SAT needed to meet a system capacity. Subtle difference.

rraustad · 2017-02-15T22:12:37Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -344,29 +345,12 @@ namespace HVACUnitarySystem {
 		// PURPOSE OF THIS SUBROUTINE:
 		// This subroutine manages unitary system component simulation.

-		// METHODOLOGY EMPLOYED:


Deleted lots of these unnecessary comments, blow right by them when reviewing.

rraustad · 2017-02-15T22:13:18Z

src/EnergyPlus/HVACUnitarySystem.cc

@@ -437,7 +421,7 @@ namespace HVACUnitarySystem {
 			} else {
 				ControlUnitarySystemtoSP( UnitarySysNum, AirLoopNum, FirstHVACIteration, CompOn, OAUCoilOutTemp, HXUnitOn );
 			}
-		} else if ( SELECT_CASE_var == LoadBased ) {
+		} else if ( SELECT_CASE_var == LoadBased || SELECT_CASE_var == CCM_ASHRAE ) {


Single zone VAV is actually the same as Load based, with new logic for control.

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

rraustad · 2017-02-16T18:42:51Z

The 1 test had: MTR big diffs still bugs me. So this time I added report variables that make up the Electricity:HVAC meter hoping to track this down. Comparing current develop to this branch still gives no diff's. I'm confused as to why CI shows diff's and I don't, but at least I tried.

HVACTemplate-5ZoneUnitarySystem.csv vs HVACTemplate-5ZoneUnitarySystem_new.csv
All Records are Equal.    48 records compared
* * * * * * * * * * * * 
HVACTemplate-5ZoneUnitarySystemMeter.csv vs HVACTemplate-5ZoneUnitarySystem_newMeter.csv
All Records are Equal.    2 records compared
* * * * * * * * * * * * 
HVACTemplate-5ZoneUnitarySystemZsz.csv vs HVACTemplate-5ZoneUnitarySystem_newZsz.csv
All Records are Equal.    99 records compared
* * * * * * * * * * * * 
HVACTemplate-5ZoneUnitarySystemSsz.csv vs HVACTemplate-5ZoneUnitarySystem_newSsz.csv
All Records are Equal.    98 records compared

For Meter=Electricity:HVAC [J], ResourceType=Electricity, Group=HVAC, contents are:
  SYS 2 FURNACE DX COOL MULTISPD SUPPLY FAN:Fan Electric Energy
  SYS 1 FURNACE DX COOL SNGLSPD SUPPLY FAN:Fan Electric Energy
  SYS 3 HEAT PUMP AIRSOURCE SNGLSPD SUPPLY FAN:Fan Electric Energy
  SYS 4 HEAT PUMP WATERSOURCE SNGLSPD SUPPLY FAN:Fan Electric Energy
  SYS 5 HW CHW SYSTEM SUPPLY FAN:Fan Electric Energy
  SYS 2 FURNACE DX COOL MULTISPD HEATING COIL:Heating Coil Electric Energy
  SYS 3 HEAT PUMP AIRSOURCE SNGLSPD SUPP HEAT OR REHEAT COIL:Heating Coil Electric Energy
  SYS 4 HEAT PUMP WATERSOURCE SNGLSPD SUPP HEAT OR REHEAT COIL:Heating Coil Electric Energy
  SYS 1 FURNACE DX COOL SNGLSPD HEATING COIL:Heating Coil Electric Energy
  SYS 1 FURNACE DX COOL SNGLSPD COOLING COIL:Cooling Coil Electric Energy
  SYS 3 HEAT PUMP AIRSOURCE SNGLSPD COOLING COIL:Cooling Coil Electric Energy
  SYS 3 HEAT PUMP AIRSOURCE SNGLSPD HEATING COIL:Heating Coil Electric Energy
  SYS 3 HEAT PUMP AIRSOURCE SNGLSPD HEATING COIL:Heating Coil Defrost Electric Energy
  SYS 3 HEAT PUMP AIRSOURCE SNGLSPD HEATING COIL:Heating Coil Crankcase Heater Electric Energy
  SYS 2 FURNACE DX COOL MULTISPD COOLING COIL:Cooling Coil Electric Energy
  SYS 4 HEAT PUMP WATERSOURCE SNGLSPD COOLING COIL:Cooling Coil Electric Energy
  SYS 4 HEAT PUMP WATERSOURCE SNGLSPD HEATING COIL:Heating Coil Electric Energy
  SYS 1 FURNACE DX COOL SNGLSPD UNITARY SYSTEM:Unitary System Heating Ancillary Electric Energy
  SYS 2 FURNACE DX COOL MULTISPD UNITARY SYSTEM:Unitary System Heating Ancillary Electric Energy
  SYS 2 FURNACE DX COOL MULTISPD UNITARY SYSTEM:Unitary System Cooling Ancillary Electric Energy
  SYS 3 HEAT PUMP AIRSOURCE SNGLSPD UNITARY SYSTEM:Unitary System Heating Ancillary Electric Energy
  SYS 4 HEAT PUMP WATERSOURCE SNGLSPD UNITARY SYSTEM:Unitary System Heating Ancillary Electric Energy
  SYS 5 HW CHW SYSTEM UNITARY SYSTEM:Unitary System Heating Ancillary Electric Energy

Myoldmopar · 2017-02-16T20:00:11Z

Our branches are moving much faster than poor CI can keep up with, so I wouldn't be completely surprised if the diffs are unrelated. As far as you're concerned, are you done with this branch?

rraustad · 2017-02-16T20:06:47Z

Yes, this should be complete. I asked Safvat today about the status of running CI on FSEC blades and he said there has been no movement. You should consider that since his blades would be smokin' right now.

EnergyArchmage · 2017-02-16T20:23:52Z

I have looked at this code briefly and agree it won't conflict with the VS coil project very much. Probably makes sense to merge this one before #5943, then I will fix up whatever conflicts there are.

Myoldmopar · 2017-02-16T20:26:24Z

OK, I'm willing to risk just a little to get this in before CI is all done. I'll merge it now. @EnergyArchmage prepare for resolving any merge issues.

rraustad added 7 commits November 14, 2016 16:26

Initial NFP for SZVAV for other equipment

0f263a2

Update NFP

227b74c

Mod to IDD and add new variable for CapacityControlType

e1fc58d

Initial commit for SZVAV for other equipment

806c402

Merge branch 'develop' of https://github.com/NREL/EnergyPlus into Bra…

d041a3b

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

Code and unit tests, doc updates, final mods to SZVAV for UnitarySystem

fcef22c

Merge branch 'develop' of https://github.com/NREL/EnergyPlus into Bra…

6d7c131

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests Conflicts: doc/input-output-reference/src/overview/group-unitary-equipment.tex

mjwitte added IDDChange Code changes impact the IDD file (cannot be merged after IO freeze) NewFeature Includes code to add a new feature to EnergyPlus labels Feb 13, 2017

mjwitte added this to the EnergyPlus 8.7.0 milestone Feb 13, 2017

rraustad changed the title ~~Branch pt133379791 new feature szvav code and unit tests~~ New feature - ASHRAE 90.1 SZVAV control for Unitary Systems Feb 13, 2017

rraustad added 2 commits February 13, 2017 16:20

Minor edit, checking why so many errors on CI

18d5f5d

Merge branch 'develop' of https://github.com/NREL/EnergyPlus into Bra…

4932c9d

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

Myoldmopar reviewed Feb 14, 2017

View reviewed changes

rraustad added 2 commits February 14, 2017 13:18

Final documentation and minor cleanup for SZVAV

2c24386

Merge branch 'develop' of https://github.com/NREL/EnergyPlus into Bra…

5f8d6a2

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

mjwitte mentioned this pull request Feb 15, 2017

SZVAV for other equipment #5938

Closed

20 tasks

rraustad added 2 commits February 15, 2017 08:19

Merge branch 'SZVAV-Control-for-other-equipment' into Branch_PT133379…

ad01124

…791-New-Feature---SZVAV-Code-and-Unit-Tests

Doc update, merge 5938

0586a38

rraustad added 2 commits February 15, 2017 16:49

Final sizing update.

db4d0a9

Merge branch 'develop' of https://github.com/NREL/EnergyPlus into Bra…

4a75aa5

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

rraustad commented Feb 15, 2017

View reviewed changes

rraustad added 2 commits February 16, 2017 12:26

Cleanup

9823fcd

Merge branch 'develop' of https://github.com/NREL/EnergyPlus into Bra…

a5b71f8

…nch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests

Myoldmopar merged commit 915298a into develop Feb 16, 2017

Myoldmopar deleted the Branch_PT133379791-New-Feature---SZVAV-Code-and-Unit-Tests branch February 16, 2017 20:26

aaron-boranian mentioned this pull request Mar 29, 2018

Improve the AirLoop:UnitarySystem object to support VAV fan control #6665

Open

Myoldmopar mentioned this pull request Jul 18, 2022

SZVAV Appears to be having issues #9546

Open



		if ( UnitarySystem( UnitarySysNum ).ControlType == CCM_ASHRAE ) {

		if( coilLoopNum > 0 ) SetComponentFlowRate( Node( coilFluidInletNode ).MassFlowRate, coilFluidInletNode, coilFluidOutletNode, coilLoopNum, coilLoopSide, coilBranchNum, coilCompNum );

		} else { // not ASHRAE model

New feature - ASHRAE 90.1 SZVAV control for Unitary Systems #5994

New feature - ASHRAE 90.1 SZVAV control for Unitary Systems #5994

Conversation

rraustad commented Jan 27, 2017 • edited Loading

Pull request overview

Work Checklist

Review Checklist

rraustad commented Feb 10, 2017

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

rraustad commented Feb 14, 2017

rraustad commented Feb 15, 2017

rraustad commented Feb 15, 2017

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

rraustad Feb 15, 2017 • edited Loading

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

rraustad commented Feb 16, 2017

Myoldmopar commented Feb 16, 2017

rraustad commented Feb 16, 2017

EnergyArchmage commented Feb 16, 2017

Myoldmopar commented Feb 16, 2017

rraustad commented Jan 27, 2017 •

edited

Loading

rraustad Feb 15, 2017 •

edited

Loading