First time here? Check out the Help page!
2024-03-22 04:50:39 -0500 | answered a question | Indirect evaporative cooler modelling in openstudio I have used it successfully, though it was a few years ago. You do not set "capacity" for this object / equipment since |
2024-03-22 04:50:39 -0500 | received badge | ● Rapid Responder (source) |
2024-02-01 06:53:28 -0500 | commented answer | Seeking Insights on Abnormal Cooling Behavior in EnergyPlus Air-Chiller Model I wonder if you might adapt a "standard" DX cooling system which serves a zone defined with: - proper R-value walls - co |
2024-02-01 06:50:12 -0500 | commented answer | Seeking Insights on Abnormal Cooling Behavior in EnergyPlus Air-Chiller Model Short comment: I don't think I can help further with your specific interest. :( For your consideration: Energy models ar |
2024-02-01 06:37:04 -0500 | commented question | Seeking Insights on Abnormal Cooling Behavior in EnergyPlus Air-Chiller Model Zakaria, I prepared a model years ago using the Refrigerated Warehouse scheme and had great difficulty using it. I spoke |
2024-01-29 07:59:24 -0500 | received badge | ● Rapid Responder (source) |
2024-01-29 07:59:24 -0500 | answered a question | Seeking Insights on Abnormal Cooling Behavior in EnergyPlus Air-Chiller Model The capacity of any refrigeration object is normally specified as the "rated" or "nominal" capacity because that capacit |
2024-01-29 06:42:38 -0500 | commented question | Seeking Insights on Abnormal Cooling Behavior in EnergyPlus Air-Chiller Model Zakaria, I prepared a model years ago using the Refrigerated Warehouse scheme and had great difficulty using it. I spoke |
2023-12-14 05:38:22 -0500 | received badge | ● Nice Question (source) |
2023-08-10 09:09:32 -0500 | commented answer | SEER and HSPF in E+/Design Builder Anna, the "various outdoor air temperatures" are specific values that are independent of the climate. Single speed heat |
2023-08-10 05:13:29 -0500 | received badge | ● Rapid Responder (source) |
2023-08-10 05:13:29 -0500 | answered a question | SEER and HSPF in E+/Design Builder Anna, I don't think the weather file has anything to do with the SEER or HSPF calculations, Their test conditions are se |
2023-05-11 05:40:47 -0500 | answered a question | Long waiting time when openning eso file in Designbuilder Result Viewer DesignBuilder just released a new version (v4), which might be faster. I have also experienced long waits for opening fi |
2023-04-24 04:46:30 -0500 | answered a question | Is there were a way to build a one line diagram for the plant loop and then export it to EnergyPlus? Another possibility is DesignBuilder, which builds air and water loops in a graphical environment. |
2023-04-24 04:46:30 -0500 | received badge | ● Rapid Responder (source) |
2023-03-31 05:12:39 -0500 | answered a question | DesignBuilder/E+: Is it possible to reduce the supply air flow rate of the VAV-system during night time (22.00 - 5.00) constantly to 60 %? I assign a schedule with values of 1.0 and .6 to the Air Distribution Unit. That should work! |
2023-03-21 02:13:48 -0500 | commented answer | What optimization software is there for building optimization? You did not mention it ... so I will :) Optimization should not be conducted apart from it relationship to the construct |
2023-03-19 05:48:20 -0500 | commented question | Warnings while simulating a walk-in freezer using Air-chiller object Zakaria, Have you created some output variables and reviewed them to see what is happening (in more detail than is given |
2023-02-28 13:14:21 -0500 | commented answer | Night ventilation not working Happy to take a look at your IDF (jvdirkes2@protonmail.com). If you send it, also describe the sequence of operation tha |
2023-02-23 06:00:32 -0500 | received badge | ● Rapid Responder (source) |
2023-02-23 06:00:32 -0500 | answered a question | A calibration question. My opinion: I have prepared models of existing buildings AFTER inspecting the site, noting details about HVAC equipment |
2023-02-12 05:25:26 -0500 | commented question | Compressor Performance Curves The key difference between DX coils and refrigeration compressors (which I think is a weakness in E+) is that the result |
2023-02-11 16:30:26 -0500 | commented question | Compressor Performance Curves Do you know about the curve data set available in EnergyPlus? If not, look for RefrigerationCompressorCurves.idf in the |
2023-02-11 15:29:13 -0500 | commented question | Compressor Performance Curves I may be able to assist. Please contact me at: jvdirkes2@protonmail.com for more discussion. |
2023-02-11 06:07:29 -0500 | commented question | Compressor Performance Curves Clarifying: Refrigeration compressors (such as for a refrigerated warehouse) require curves which are very different. If |
2023-02-05 08:03:47 -0500 | commented answer | Multiple SwimmingPool:Indoor objects do not work jvdirkes2@protonmail.com |
2023-02-05 05:17:18 -0500 | answered a question | Multiple SwimmingPool:Indoor objects do not work Dear Keigo, Before E+ had a pool object, I developed a swimming pool calculation procedure that uses: The Shah proced |
2023-02-05 05:17:18 -0500 | received badge | ● Rapid Responder (source) |
2023-01-29 05:18:19 -0500 | received badge | ● Rapid Responder (source) |
2023-01-29 05:18:19 -0500 | answered a question | How can I turn off an indoor unit of a VRF system? I'm not looking at the object, but I think you can set the fan to cycle (as opposed to continuous operation). With inter |
2023-01-23 04:52:00 -0500 | commented question | Description of Chiller EIRFPLR in I/O Reference The nature of EIR is power (W) / cooling capacity (W), so I'm confident that the I/O Reference is correct. You might che |
2023-01-23 04:47:45 -0500 | received badge | ● Rapid Responder (source) |
2023-01-23 04:47:45 -0500 | answered a question | How to model reasonable VRF EIRFPLR curve with insufficient data Keigo, As usual, you are giving thoughtful consideration to the problem - I appreciate that very much. I think there are |
2022-12-02 05:07:46 -0500 | answered a question | Humidification control with ZoneHVAC objects Try adding an OtherEquipment object with the "FractionLatent" field as 1.0 |
2022-12-02 05:07:46 -0500 | received badge | ● Rapid Responder (source) |
2022-11-30 07:58:39 -0500 | answered a question | designbuilder v7 simple hvac seasonal cop has no effect DesignBuilder does not use certain inputs, depending on the way you have configured HVAC calculations in the Model Optio |
2022-11-30 07:58:39 -0500 | received badge | ● Rapid Responder (source) |
2022-11-20 05:05:56 -0500 | commented question | Question about modelling in Energyplus However, if there is no energy, then the supply and inlet temps will be equal. I'd look at your plant definitions and se |
2022-11-18 15:13:18 -0500 | commented answer | Modelling heat loss from an outdoor heated pool using tools/inputs intended for basements For a wall, the impact of the "air film", which contribute to the overall U-value, is greater/lesser depending on air sp |
2022-11-18 04:13:04 -0500 | answered a question | Modelling heat loss from an outdoor heated pool using tools/inputs intended for basements A pool is indeed a basement as far as conduction through its walls is concerned. The pool water temperature is the "room |
2022-11-16 07:58:31 -0500 | asked a question | Compliance model lighting takeoff Compliance model lighting takeoff There's got to be a better way - than counting light fixtures, calculating their power |
2022-11-05 08:36:04 -0500 | received badge | ● Self-Learner (source) |
2022-10-21 08:13:19 -0500 | answered a question | Manually specified airflow is "ignored" I was reminded of something I "learned" several months ago by Shaun Wang at DesignBuilder: If I autosize AirDistributio |
2022-10-21 08:13:19 -0500 | received badge | ● Rapid Responder (source) |
2022-10-20 10:57:50 -0500 | asked a question | Manually specified airflow is "ignored" Manually specified airflow is "ignored" I'm scratching my head! I've specified a very simple, electric heating-only syst |
2022-10-17 05:53:00 -0500 | commented question | Why is DX coil's rated airflow per rated cooling/heating capacity limited? and.... I don't think E+ crashes when you exceed the ranges. Instead, it gives MANY warnings. If you have reviewed the s |
2022-10-06 06:13:53 -0500 | commented answer | Chiller performance curve adjustment for ASHRAE90.1 Baseline case Please report the apparent error to E+ Issues page at https://github.com/NREL/EnergyPlus/issues. Since the program bug |
2022-10-05 09:37:38 -0500 | answered a question | Chiller performance curve adjustment for ASHRAE90.1 Baseline case ASHRAE 90.1's IP version is definitely NOT applicable for use with E+. All E+ curves must use SI units (and the coeffici |
2022-10-05 09:37:38 -0500 | received badge | ● Rapid Responder (source) |
2022-10-04 09:32:28 -0500 | commented answer | Chiller IPLV Calculation A few thoughts: 1) 1.5% difference is small and I wouldn't worry as long as it's consistently small. It might be roundin |