Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question

Aly ElHefny's profile - activity

2021-09-23 08:37:57 -0500 commented answer Solar Irradiance [TMY vs Actual data]

Hey Debayan, For the location, I'm using the exact station location for the both cases. I understand that TMY presents a

2021-09-23 08:37:23 -0500 commented answer Solar Irradiance [TMY vs Actual data]

For the location, I'm using the exact station location for the both cases. I understand that TMY presents averaging valu

2021-09-18 13:36:55 -0500 answered a question Modify effectiveness in rotational HeatExchanger:AirToAir:SensibleAndLatent

I believe this discussion covers part of your question : Air to air rotary exchanger rpm

2021-09-14 17:32:04 -0500 asked a question Solar Irradiance [TMY vs Actual data]

Solar Irradiance [TMY vs Actual data] Hello everyone, I hope you are in good health. The following plot presents the gl

2021-09-01 21:46:49 -0500 commented answer ReadVarsEso message

Thank you so much for the useful information. Yes saving 3-5 seconds would result in major time savings for the scale I'

2021-09-01 14:54:33 -0500 edited question ReadVarsEso message

ReadVarsEso message Hello everyone, I hope you are all in good health. Currently, I don't have any reported items unde

2021-09-01 14:53:55 -0500 edited question ReadVarsEso message

ReadVarsEso message Hello everyone, I hope you are all in good health. Currently, I don't have any reported items unde

2021-09-01 14:52:53 -0500 edited question ReadVarsEso message

ReadVarsEso message Hello everyone, I hope you are all in good health. Currently, I don't have any inputs under "Outpu

2021-09-01 14:52:22 -0500 asked a question ReadVarsEso message

ReadVarsEso message Hello everyone, I hope you are all in good health. Currently, I don't have any inputs under "Outpu

2021-09-01 14:08:50 -0500 commented answer Using custom solar profile within TMY file

Hello Bonnema and Aaron, thanks for your helpful replies. All the alternatives look very helpful. That would enable me t

2021-09-01 14:06:50 -0500 commented answer Using custom solar profile within TMY file

Hello Bonnema and Aaron, thanks for your helpful replies. Option 2 looks the best. That would enable me test the current

2021-09-01 13:43:27 -0500 marked best answer Using custom solar profile within TMY file

Hello everyone, I hope you are all doing well.

Is there a way to have the TMY file run a custom solar trajectory ? Or I have to construct a custom weather file and include all inputs (Not TMY) ?

2021-08-28 11:25:35 -0500 edited question Using custom solar profile within TMY file

Declaring a specific solar profile within TMY file Hello everyone, I hope you are all doing well. Is there a way to hav

2021-08-28 11:25:15 -0500 edited question Using custom solar profile within TMY file

Declaring a specific solar profile within TMY file Hello everyone, I hope you are all doing well. Is there a way to hav

2021-08-28 11:24:40 -0500 asked a question Using custom solar profile within TMY file

Declaring a specific solar profile within TMY file Hello everyone, I hope you are all doing well. Is there a way to hav

2021-08-28 11:11:46 -0500 commented question Ideal load air system returning low load values

No I'm using ideal model for only one case of the two. But even comparing the sensible loads has difference.

2021-08-26 19:44:41 -0500 commented answer Report VAV/CAV reheat load in EnergyPlus

To have the energy consumed in reheat you simply add the energy consumed by all the reheat coils. Reheat does not mean t

2021-08-25 20:03:57 -0500 commented question Ideal load air system returning low load values

Hello Aaron, I hope you are well. For the prototype building I'm reporting the variable: Cooling Coil Total Cooling Rate

2021-08-25 20:03:09 -0500 commented question Ideal load air system returning low load values

Hello Aaron, I hope you are well. For the prototype building I'm reporting the variable: Cooling Coil Total Cooling Rate

2021-08-25 15:34:54 -0500 edited question Ideal load air system returning low load values

Ideal load air system returning low load values Hello everyone, I hope you are all in good health. I'm using ideal load

2021-08-25 15:33:38 -0500 asked a question Ideal load air system returning low load values

Ideal load air system returning low load values Hello everyone, I hope you are all in good health. I'm using load air s

2021-08-23 15:01:06 -0500 answered a question Report VAV/CAV reheat load in EnergyPlus

You can generate output for your reheat coil similar to any heating coil, for example: Heating Coil Electric Energy , He

2021-08-23 15:01:06 -0500 received badge  Rapid Responder (source)
2021-08-23 14:49:48 -0500 answered a question how can i get inlet and out let air temperature of the cooling coil in energyplus

To view the temperatures at the inlet and outlet of the cooling coil you can output the variable: "System Node Mass Flow

2021-06-24 12:57:13 -0500 marked best answer Generating weather file from one year measured data

Hello Everyone, I hope you are all doing well and safe.

I'm trying to create an epw file out of real data to be used in an energyplus simulation. I have pasted my one year hour by hour outdoor air and solar data into the "Elements" tool and generated an epw file. I've also adjusted the location related inputs in Elements. To validate that, I have then used the file to run a simulation and output the outdoor conditions. They don't match, for example here is the site outdoor air temperature compared with my raw data. Temperatures compared

I would appreciate it if I can get some hints on that procedure. Thanks in advance

2020-11-26 22:56:53 -0500 edited question Weather file, cannot find the first day

Weather file, cannot find the first day Hello everyone, I hope you are all doing well. I'm facing the following error,

2020-11-25 13:29:13 -0500 edited question Weather file, cannot find the first day

Weather file, cannot find the first day Hello everyone, I hope you are all doing well. I'm facing the following error,

2020-11-25 09:07:26 -0500 edited question Question about load in residential building

Question about load in residential building Hello everyone, I hope you are all in good health. I have a simple question

2020-11-25 09:06:35 -0500 edited question Question about load in residential building

Question about load in residential building Hello everyone, I hope you are all in good health. I have a simple question

2020-11-25 09:06:12 -0500 edited question Question about load in residential building

Question about load in residential building Hello everyone, I hope you are all in good health. I have a simple question

2020-11-09 07:17:49 -0500 commented answer Weather file, cannot find the first day

Hello Lawrie, I'm happy to know that you are in good health. Yes, I believe that's exactly what is happening , and my qu

2020-11-08 15:49:25 -0500 commented answer Weather file, cannot find the first day

So I think the problem is that the code just stops early when searching for the start day. And that's why it runs ok whe

2020-11-08 15:42:19 -0500 commented answer Weather file, cannot find the first day

Hello Linda Lawrie, I'm happy to know that you are in good health. Yes, I believe that's exactly what is happening , and

2020-11-07 18:53:20 -0500 commented question Question about load in residential building

Hello Aaron, I hope you are well. This load is in the prototypical single family residential building model. The simulat

2020-11-07 18:43:02 -0500 commented question Question about load in residential building

Hello Aaron, I hope you are well. This load is in the prototypical single family residential building model. The simulat

2020-11-07 12:23:06 -0500 edited question Weather file, cannot find the first day

Weather file, cannot find the first day Hello everyone, I hope you are all doing well. I'm facing the following error,

2020-11-06 19:42:23 -0500 received badge  Critic (source)
2020-11-06 18:54:40 -0500 asked a question Question about load in residential building

Question about load in residential building Hello everyone, I hope you are all in good health. I have a simple question

2020-11-04 13:12:25 -0500 edited question Weather file, cannot find the first day

Weather file, cannot find the first day Hello everyone, I hope you are all doing well. I'm facing the following error,

2020-11-04 13:09:39 -0500 commented answer Weather file, cannot find the first day

@Jason DeGraw It seems that the code is giving up early on finding the start day since it runs ok at January and Februar

2020-11-04 13:08:11 -0500 commented answer Weather file, cannot find the first day

@Jason DeGraw It seems that the code is giving up early on finding the start day since it runs ok at January and Februar

2020-11-04 13:05:57 -0500 edited question Weather file, cannot find the first day

Weather file, cannot find the first day Hello everyone, I hope you are all doing well. I'm facing the following error,

2020-11-04 11:45:14 -0500 edited question Weather file, cannot find the first day

Weather file, cannot find the first day Hello everyone, I hope you are all doing well. I'm facing the following error,

2020-11-04 11:35:59 -0500 commented answer Weather file, cannot find the first day

Hello Jason DeGraw and kwalkerman, I have turned all the weather indicators of RunControl to no and the problem is still

2020-11-04 10:54:13 -0500 commented answer Weather file, cannot find the first day

Hello Jason DeGraw and kwalkerman, I have turned all the weather indicators of RunControl to no and the problem is still

2020-11-04 10:51:55 -0500 commented answer Weather file, cannot find the first day

Hello Jason DeGraw and kwalkerman, I have turned all the weather indicators of RunControl to no and the problem is still

2020-11-04 10:50:39 -0500 commented answer Weather file, cannot find the first day

The problem seems to happen when simulating multiple fmus wrapped including the custom minute weather file (simulating m

2020-11-04 10:49:24 -0500 commented answer Weather file, cannot find the first day

Hello Jason DeGraw and kwalkerman, I have turned all the weather indicators of RunControl to no and the problem is still

2020-11-04 10:49:05 -0500 commented answer Weather file, cannot find the first day

Hello Jason DeGraw and kwalkerman, I have turned all the weather indicators of RunControl to no and the problem is still