Dealing with EnergyPlus Warnings

asked 2020-03-30 12:57:28 -0500

Eko123 gravatar image

updated 2020-04-18 07:05:47 -0500

I am currently setting up a simulation for research purposes and could need some help regarding EnergyPlus Warnings. I am not sure whether the warnings have to do with sizing problems or if there are bigger issues in my simulation setup. I tried to autosize most of the components and am not sure if this is maybe leading to this warnings. The warnings I receive are listed below. Does anyone have tips how to deal with them or what to do to make them disappear? Any help is appreciated. If needed I could also send you the idf file.

   ** Warning ** MapShadeDeploymentOrderToLoopNumber: found empty map for window in zone B001
   ** Warning ** Calculated design cooling load for zone=B001 is zero.
   **   ~~~   ** Check Sizing:Zone and ZoneControl:Thermostat inputs.    
   ** Warning ** HVACControllers: GetControllerInput: Controller:WaterCoil="RLT HEIZREGISTER CONTROLLER". 
   **   ~~~   **  ..Sensor node not found on water coil air outlet node.
   **   ~~~   **  ..The sensor node may have been placed on a node downstream of the coil or on an airloop outlet node.
   ** Warning ** HVACControllers: GetControllerInput: Controller:WaterCoil="RLT KUEHLREGISTER CONTROLLER". 
   **   ~~~   **  ..Sensor node not found on water coil air outlet node.
   **   ~~~   **  ..The sensor node may have been placed on a node downstream of the coil or on an airloop outlet node.
   ** Warning ** ManageSizing: Calculated Cooling Design Air Flow Rate for System=RLT LOOP 1 is zero.
   **   ~~~   ** Check Sizing:Zone and ZoneControl:Thermostat inputs.
   ************* Beginning Plant Sizing Calculations
   ** Warning ** In calculating the design coil UA for Coil:Cooling:Water RLT KUEHLREGISTER
   **   ~~~   ** no apparatus dew-point can be found for the initial entering and leaving conditions;
   **   ~~~   ** the coil outlet design conditions will be changed to correct the problem.
   **   ~~~   ** The initial design conditions are: Tair,in = 32.0000
   **   ~~~   **                                    Wair,in = 1.800000E-002
   **   ~~~   **                                    Twater,in = 6.0000
   **   ~~~   **                                    Tair,out = 20.0000
   **   ~~~   **                                    Wair,out = 1.200000E-002
   **   ~~~   ** The revised design conditions are: Tair,out = 18.3483
   **   ~~~   **                                    Wair,out = 1.266922E-002
   ** Warning ** Check input. Pump nominal power or motor efficiency is set to 0, for pump=PUMPE KKHT SUPPLY
   ** Warning ** Check input. Pump nominal flow rate is set or calculated = 0, for pump=PUMPE KKHT SUPPLY
   ************* Testing Individual Branch Integrity
   ************* All Branches passed integrity testing
   ************* Testing Individual Supply Air Path Integrity
   ************* All Supply Air Paths passed integrity testing
   ************* Testing Individual Return Air Path Integrity
   ************* All Return Air Paths passed integrity testing
   ************* No node connection errors were found.
   ** Warning ** HeatExchanger:AirToAir:SensibleAndLatent "RLT WAERMERUECKGEWINNUNG"
   **   ~~~   ** Average air volume flow rate is <50% or >130% of the nominal HX supply air volume flow rate.
   **   ~~~   ** Air volume flow rate ratio = 1.000E-002. Environment=MUNICH ANN HTG 99.6% CONDNS DB HVAC Sizing Pass 1, at Simulation time=01/21 00:00 - 00:15
   ** Warning ** SizePlantLoop: Calculated Plant Sizing Design Volume Flow Rate=[0.00] is too small. Set to 0.0
   **   ~~~   ** ..occurs for PlantLoop=KUEHLDECKEN
   ** Warning ** SizePump: Calculated Pump Nominal Volume Flow Rate=[0.00] is too small. Set to 0.0
   **   ~~~   ** ..occurs for Pump=PUMPE KKHT SUPPLY
   ************* Beginning Simulation
   ** Warning ** CoolingTower:VariableSpeed "KUEHLTURM" - Tower range temperature is outside model boundaries at 1.52E-004.
   **   ~~~   **  ...Valid range = 1.11 to 22.22 ...
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