2024-05-16 11:30:43 -0500 | commented question | Error in UserDefined HVAC Objects assembled I posted issue 10507 to get this fixed. |
2024-05-16 11:23:49 -0500 | answered a question | Error in UserDefined HVAC Objects assembled The program is comparing the AirTerminal:SingleDuct:UserDefined Primary Air Outlet Node Name to the ZoneHVAC:AirDistribu |
2024-05-15 08:55:40 -0500 | received badge | ● Rapid Responder (source) |
2024-05-15 08:55:40 -0500 | answered a question | no_load_supply_air_flow_rate_control_set_to_low_speed - Failed to match against any enum values. Change the input for this line: SupplyAirFlowRate, !- No Load Supply Air Flow Rate Control Set To Low Speed t |
2024-05-15 07:44:24 -0500 | commented question | Error in UserDefined HVAC Objects assembled You should just email me the file to the address in my profile. I would rather not install the file transfer app. |
2024-05-15 07:41:08 -0500 | commented answer | Convert IDF geometry objects from Relative to World coordinate system The Number of Vertices field can be left blank and the number of vertices will be calculated internally. Does a blank fi |
2024-05-15 07:40:10 -0500 | commented answer | Convert IDF geometry objects from Relative to World coordinate system The Number of Vertices field can be left blank and the number of vertices will be calculated internally. BuildingSurfac |
2024-05-08 20:13:31 -0500 | commented question | Error in UserDefined HVAC Objects assembled I have never connected user defined components before but if you send me the input file I could investigate what is trip |
2024-05-07 14:23:18 -0500 | commented answer | How should I fix the UpdateZoneSizing message? Why does one error produce a warning and the other a severe warning? You can see similar numbers of m3/s/W in the Engineering Reference under DX Coil Sizing. Then also search for "0.00004" |
2024-05-07 08:04:34 -0500 | edited answer | How should I fix the UpdateZoneSizing message? Why does one error produce a warning and the other a severe warning? The message is telling you that the supply air temperature is close to the zone temperature (a small delta T). During si |
2024-05-07 08:03:27 -0500 | edited answer | How should I fix the UpdateZoneSizing message? Why does one error produce a warning and the other a severe warning? The message is telling you that the supply air temperature is close to the zone temperature (a small delta T). During si |
2024-05-07 08:02:59 -0500 | answered a question | How should I fix the UpdateZoneSizing message? Why does one error produce a warning and the other a severe warning? The message is telling you that the supply air temperature is close to the zone temperature (a small delta T). During si |
2024-05-07 08:02:59 -0500 | received badge | ● Rapid Responder (source) |
2024-04-18 13:04:03 -0500 | answered a question | set point not met for the period of 01/04 - 31/09 The loss of temperature control is likely due to undersized cooling coil(s). You can tell this by looking at a day where |
2024-03-20 15:34:34 -0500 | received badge | ● Rapid Responder (source) |
2024-03-20 15:34:34 -0500 | answered a question | Modeling an inverter based AC as a VRF Probably should be using cycling fan mode and also check the cooling EIRfPLR curve to make sure it represents the VS com |
2024-03-15 09:55:06 -0500 | commented answer | FindRootSimpleController Disregard the warning for now. We are working to correct the problem in https://github.com/NREL/EnergyPlus/pull/10435 |
2024-03-14 10:28:55 -0500 | edited answer | FindRootSimpleController It appears from the warning message that you have set the temperature set point to a humidity ratio instead of a tempera |
2024-03-14 10:28:18 -0500 | edited answer | FindRootSimpleController It appears from the warning message that you have set the temperature set point to a humidity ratio instead of a tempera |
2024-03-14 07:20:50 -0500 | commented answer | FindRootSimpleController The effect will be to NOT overcool to meet the dehumidification load. If you plot zone temperature/RH and cooling coil o |
2024-03-12 15:43:54 -0500 | commented answer | FindRootSimpleController See discussion at https://github.com/NREL/EnergyPlus/pull/10435 |
2024-03-12 15:43:02 -0500 | commented answer | FindRootSimpleController @mjwitte is working on modifying this warning message to be more clear. He noted that the CW temperature set point is li |
2024-03-12 11:48:45 -0500 | commented answer | FindRootSimpleController Also show the Setpointmanager:MultiZoneHumidity:Maximum and MInimum objects so I can see where the issue is coming from. |
2024-03-12 11:46:14 -0500 | commented answer | FindRootSimpleController And now show this object: Chilled Water Loop Setpoint Node List |
2024-03-12 11:06:25 -0500 | commented answer | FindRootSimpleController Can you paste in the SetPointManager:Scheduled object used for this cooling coil? Or add it to your question above. |
2024-03-12 09:44:47 -0500 | commented answer | FindRootSimpleController Yes, that is your water coil controller. But you also need SetpointManager* objects to place a temperature set point and |
2024-03-12 08:16:50 -0500 | edited answer | FindRootSimpleController It appears from the warning message that you have set the temperature set point to a humidity ratio instead of a tempera |
2024-03-12 08:14:46 -0500 | received badge | ● Rapid Responder (source) |
2024-03-12 08:14:46 -0500 | answered a question | FindRootSimpleController It appears from the warning message that you have set the temperature set point to a humidity ratio instead of a tempera |
2024-02-26 10:32:22 -0500 | answered a question | How to report actual total autosized capacity of HVAC system (not just based on sensible load)? I am looking at the HVAC Sizing summary in the latest version of EnergyPlus and I do see "total" coil capacity. Dependin |
2024-02-21 12:20:15 -0500 | edited answer | Heat Index vs. Heat Index OccupantHour vs. Heat Index OccupiedHour Does this help? It looks like it's hours, occupancy * hours, and occupancy when > 0 * hours. So total occupancy * hou |
2024-02-21 12:18:48 -0500 | edited answer | Heat Index vs. Heat Index OccupantHour vs. Heat Index OccupiedHour Does this help? It looks like it's occupancy * hours, and occupancy when > 0 * hours. So total occupancy * hours and |
2024-02-21 12:17:42 -0500 | edited answer | Heat Index vs. Heat Index OccupantHour vs. Heat Index OccupiedHour Does this help? It looks like it's occupancy * hours, and occupancy when > 0 * hours. So total occupancy * hours and |
2024-02-21 12:16:53 -0500 | edited answer | Heat Index vs. Heat Index OccupantHour vs. Heat Index OccupiedHour Does this help? It looks like it's occupancy * hours, and occupancy when > 0 * hours. So total occupancy * hours and |
2024-02-21 12:14:44 -0500 | received badge | ● Rapid Responder (source) |
2024-02-21 12:14:44 -0500 | answered a question | Heat Index vs. Heat Index OccupantHour vs. Heat Index OccupiedHour Does this help? state.dataHeatBalFanSys->ZoneHeatIndexHourBinsRepPeriod(ZoneNum, ReportPeriodIdx)[0] += state.dataGl |
2024-02-21 11:35:28 -0500 | answered a question | I am getting error like - In calculating the design coil UA for Coil:Cooling:Water It may be that the Sizing:Zone Zone Cooling Design Supply Air Humidity Ratio is higher than what is calculated for the c |
2024-02-21 11:35:28 -0500 | received badge | ● Rapid Responder (source) |
2024-02-20 12:27:19 -0500 | commented answer | negative coil bypass factor calculated The warning shows Rated Vol Flow Per Watt=[1.648E-005] which is very low. You might try increasing the supply air temper |
2024-02-13 08:15:23 -0500 | commented answer | Refrigeration system in EnergyPlus I am not familiar with this model but it may be that the comment is wrong. It looks like these coefficients are applied |
2024-01-31 11:16:56 -0500 | edited answer | Air-to-Water Heat Pump PLR performance curve issue Your EIRfPLR curve looks correct. However, this curve is not properly implemented in code. The EIRfPLR should output a c |
2024-01-31 11:14:55 -0500 | edited answer | Air-to-Water Heat Pump PLR performance curve issue Your EIRfPLR curve looks correct. However, this curve is not properly implemented in code. The EIRfPLR should output a c |
2024-01-31 11:09:08 -0500 | edited answer | Air-to-Water Heat Pump PLR performance curve issue Your EIRfPLR curve looks correct. However, this curve is not properly implemented in code. The EIRfPLR should output a c |
2024-01-31 10:55:45 -0500 | answered a question | Air-to-Water Heat Pump PLR performance curve issue Your EIRfPLR curve looks correct. However, this curve is not properly implemented in code. The EIRfPLR should output a c |
2024-01-31 10:55:45 -0500 | received badge | ● Rapid Responder (source) |
2024-01-30 09:02:40 -0500 | answered a question | IDF Setpoint Value A heating set point temperature of 24 C means there will be a heaing load in the zone if the zone temperature is predict |
2024-01-30 09:02:40 -0500 | received badge | ● Rapid Responder (source) |
2023-12-14 13:48:56 -0500 | commented question | Error when using PTHP Yes, that is the issue. The cooling and heating air flow rate was 0. At least this question shows that the messge you go |
2023-12-13 11:27:37 -0500 | commented answer | Simulation taking way too long Do you have many surfaces and zones? Could the number of surfaces or zones be reduced? What type of HVAC and/or plant? H |
2023-12-13 11:27:20 -0500 | commented answer | Simulation taking way too long Do you have many surfaces and zones? Could the number of surfaces or zones be reduced? What type of HVAC and/or plant? H |