2024-05-16 12:38:25 -0500 | answered a question | Error when using PTHP See related answer here. https://unmethours.com/question/98420/unable-to-determine-fan-air-flow-rate-error/?answer=99042 |
2024-05-16 12:34:56 -0500 | answered a question | Unable to determine fan air flow rate Error There is a clue in the warnings above the fatal error: * Warning * Calculated design cooling load for zone=THERMAL ZONE |
2024-01-02 10:44:18 -0500 | commented answer | Does E+ consider interior shading when calculating the operative temperature? There have been some recent changes related to MRT Calculations but this issue has not been resolved yet. The surface he |
2024-01-02 10:43:46 -0500 | commented answer | Does E+ consider interior shading when calculating the operative temperature? There have been some recent changes related to MRT Calculations but this issue has not been resolved yet. The surface he |
2024-01-02 10:41:17 -0500 | commented answer | Does E+ consider interior shading when calculating the operative temperature? There have been some recent changes related to (https://github.com/NREL/EnergyPlus/pull/10244 "MRT Calculations"), but t |
2024-01-02 10:36:25 -0500 | commented answer | Does E+ consider interior shading when calculating the operative temperature? There have been some recent changes related to (https://github.com/NREL/EnergyPlus/pull/10244 "MRT Calculations"), but t |
2024-01-02 10:36:07 -0500 | commented answer | Does E+ consider interior shading when calculating the operative temperature? There have been some recent changes related to (https://github.com/NREL/EnergyPlus/pull/10244 "MRT Calculations")), but |
2024-01-02 10:34:06 -0500 | commented answer | Does E+ consider interior shading when calculating the operative temperature? There have been some recent changes related to MRT calculations, but this issue has not been resolved yet. The surface h |
2023-12-08 10:57:18 -0500 | commented answer | Heat Balance of a Thermal Zone Note that some of these outputs require "Output:Diagnostics, DisplayAdvancedReportVariables;" to activate them. |
2023-11-07 13:20:42 -0500 | received badge | ● Nice Answer (source) |
2023-07-12 11:27:53 -0500 | answered a question | EMS actuator override of mass flow rate and temperature provide strange behaviour. See answer here https://github.com/NREL/EnergyPlus/issues/9311#issuecomment-1632849178 |
2023-07-10 09:13:34 -0500 | answered a question | Outdoor Air Schedule Name in DesignSpecification:OutdoorAir does not work DesignSpecification:OutdoorAir (DSOA) is primarily used for sizing (which ignores the schedule), but it can also be used |
2023-01-30 09:14:51 -0500 | answered a question | Unitary system (Water- Air) CC control issues Both of these approaches should work, and they did for this coil type until EnergyPlus v9.5. AirloopHVAC:UnitarySystem w |
2023-01-09 09:41:36 -0500 | commented question | Unitary system (Water- Air) CC control issues Solutions 1 and 2 should both work. Please share the full idf files with a link here or send to the helpdesk at energypl |
2023-01-03 12:41:59 -0500 | edited answer | Solar gain distribution between zones in Solar enclosures (Construction: Airboundary) The zones which are connected by Construction:Airboundary become one continuous enclosure for solar and radiant exchange |
2023-01-03 12:41:45 -0500 | edited answer | Solar gain distribution between zones in Solar enclosures (Construction: Airboundary) The zones which are connected by Construction:Airboundary become one continuous enclosure for solar and radiant exchange |
2023-01-03 12:39:20 -0500 | commented answer | Solar gain distribution between zones in Solar enclosures (Construction: Airboundary) You are correct that PixelCounting will handle the solar properly (if using FullInteriorAndExterior solar distribution), |
2023-01-03 10:11:12 -0500 | edited answer | Solar gain distribution between zones in Solar enclosures (Construction: Airboundary) The zones which are connected by Construction:Airboundary become one continuous enclosure for solar and radiant exchange |
2022-12-01 14:09:55 -0500 | received badge | ● Rapid Responder (source) |
2022-12-01 14:09:55 -0500 | answered a question | Solar gain distribution between zones in Solar enclosures (Construction: Airboundary) The zones which are connected by Construction:Airboundary become one continuous enclosure for solar and radiant exchange |
2022-11-14 08:35:22 -0500 | commented answer | Minimum Heat Pump PLR in HVACTemplate:System:VRF is not changed Fixed for v23.1 in PR 9708. |
2022-07-22 09:54:06 -0500 | answered a question | Peak Heating vs Boiler Sizing Two suggestions. It's possible there's an issue with multipliers in the Sensible Heat Gain Component report. Try runn |
2022-07-01 11:12:57 -0500 | commented answer | Humidistat setting in Eneryplus @Donner More details, please. |
2022-05-02 14:25:52 -0500 | answered a question | Scheduled sunlit fractions for windows SurfaceProperty:LocalEnvironment can be applied to any surface, including fenestration surfaces. See example files Surfa |
2022-05-02 10:01:38 -0500 | commented question | Why does Controller:OutdoorAir not set OA-Flow to zero as specified ? @enriquesissa There are multiple places to specify and report OA. Please post a link to the idf. |
2022-02-07 22:05:59 -0500 | answered a question | DLL Errors installing OS and E+ on Windows 11? Installing the Visual C++ Redistributable library should fix things (at least for EnergyPlus, not sure about OpenStudio) |
2022-01-04 13:32:04 -0500 | commented answer | Modelling a gas absorption heat pump in EnergyPlus Still the same in v9.6. |
2021-12-02 10:00:39 -0500 | commented answer | value for cp Specific heat of air See answer here. |
2021-12-02 09:59:41 -0500 | answered a question | how to find Zone Infiltration Rate? or equivalent in [W] I'm not sure I follow the question. To answer the question in the title, the infiltration gain or loss in W is simply th |
2021-12-01 14:13:58 -0500 | answered a question | value for cp Specific heat of air In general, EnergyPlus uses variable specific heat of air. The psychrometric function PsyCpAirFnW calculates specific he |
2021-08-05 13:46:58 -0500 | received badge | ● Enlightened (source) |
2021-08-05 13:46:58 -0500 | received badge | ● Nice Answer (source) |
2021-03-29 01:12:16 -0500 | received badge | ● Necromancer (source) |
2021-03-24 21:45:49 -0500 | commented answer | Mismatch in outside surface heat balance in EnergyPlus Issue #6939 was fixed in EnergyPlus v9.2.0. |
2021-03-01 09:40:33 -0500 | answered a question | EMS incorrectly reads output variable The idf snippet shown above is using calling point AfterPredictorAfterHVACManagers. The "Managers" in this calling point |
2020-09-01 17:39:52 -0500 | commented answer | Long simulation time : Fully glazed room with a large number of glazing I would have expected some improvement (assuming your schedule does not change the blind status very often during the da |
2020-07-13 10:15:08 -0500 | commented answer | Long simulation time : Fully glazed room with a large number of glazing Part of the slow-down with any shading device is a recalculation of the SciptF approximate view factors for a given zone |
2020-07-09 11:23:12 -0500 | commented question | Clarification on Outdoor, Mixed, Supply, Exhaust Flow Rates and Temperatures in EnergyPlus Ideal Loads Air System It there is no outdoor air, all of the air is recirculated from the zone, so there cannot be any heat recovery. |
2020-07-09 11:20:17 -0500 | answered a question | Output data visualization during simulation in E+! I am not aware of any existing software that displays live data during the simulation. Some of the commercial interfaces |
2020-05-29 17:54:31 -0500 | commented question | E+ DOAS Night Cycle Control and FourPipeFanCoil MultiSpeedFan Control Questions @RyanCGuan new issue 8025 posted for the electric heating coil problem. |
2020-05-29 17:28:19 -0500 | commented question | What equation does EnergyPlus use to calculate Surface Outside Face Beam Solar Incident Angle Cosine Value? @mademarc Where do you get the EnergyPlus equation quoted above? In the code, I only see CTHETA calculated as a product |
2020-05-29 16:51:10 -0500 | answered a question | Create zero-heat flux boundary condition From the Input Output Reference, the "Adiabatic" outside boundary condition will not transfer heat out of the zone, but |
2020-03-23 12:17:03 -0500 | commented question | Construction:AirBoundary - "Solar Enclosures" for Grouped Zones Solar Distribution One remaining question noted below was 1-2% solar imbalance between transmitted solar, absorbed solar, and outgoing sola |
2020-03-23 12:15:19 -0500 | commented question | Construction:AirBoundary - "Solar Enclosures" for Grouped Zones Solar Distribution @jmwoolley et al Adding this comment at the top for good visibility. Several issues with Construction:AirBoundary have b |
2020-03-06 15:58:30 -0500 | commented answer | Using Airflow Network with Ideal HVAC load system? If you use EMS to override the availability schedule in the ideal loads object, you should be able to accomplish this. |
2020-03-06 15:53:59 -0500 | commented answer | Error PsyRhoAirFnPbTdbW: RhoAir (Density of Air) is calculated <= 0 [-2.17716] eio will have all autosizing results. Sizing results may also be found in various table outputs. |
2020-03-06 15:33:27 -0500 | answered a question | EnergyPlus : json.exception.type_error.305 The EnergyPlus input processor is failing, because one of the objects generated by HVACTemplate is incomplete. Examining |
2020-01-31 17:08:24 -0500 | commented answer | Using Airflow Network with Ideal HVAC load system? AvailabilityManager:HybridVentilation is used to control natural ventilation vs HVAC system operation. However, this onl |
2020-01-24 17:11:09 -0500 | answered a question | Discrepancies when using EMS to assign Construction:ComplexFenestrationState compared to assigning by construction name Prompted by a helpdesk ticket (15357) referencing this post... The user file is attempting to replace a standard windo |
2019-12-17 12:15:57 -0500 | commented answer | Construction:AirBoundary - "Solar Enclosures" for Grouped Zones Solar Distribution Surface Inside Face Initial Transmitted Diffuse Transmitted Out Window Solar Radiation Rate may be the missing 1-2%. A q |