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

yoshiwara's profile - activity

2023-03-15 18:51:19 -0500 marked best answer When two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects are specified, energyPlus clashes.

Hi all,

I am using EnergyPlus Version 22.1. When I specified two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects in IDF file, EnergyPlus clashed.

https://drive.google.com/file/d/1acIU...

The IDF file linked is only a partially modified version of a sample file. Two Cracks were replaced with SpecifiedFlowRate.

The console displayed the following messages.

EnergyPlus Starting

EnergyPlus, Version 22.1.0-ed759b17ee, YMD=2023.03.06 11:04

Adjusting Air System Sizing

Adjusting Standard 62.1 Ventilation Sizing

Initializing Simulation

The ERR file was broken off in the middle and there was no clear description of the error.

Is there anything wrong with the above IDF file description? Or is this a glitch or limitation of EnergyPlus?

Thanks.

2023-03-15 18:50:51 -0500 commented answer When two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects are specified, energyPlus clashes.

Thank you @Jason DeGraw for fix the bug. And thank you for your advice about conservation of mass.

2023-03-09 00:25:15 -0500 received badge  Enthusiast
2023-03-05 22:05:16 -0500 edited question When two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects are specified, energyPlus clashes.

When two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects are specified, energyPlus clashes. Hi all, I am using Ener

2023-03-05 22:04:45 -0500 edited question When two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects are specified, energyPlus clashes.

When two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects are specified, energyPlus clushes. Hi all, I am using Ener

2023-03-05 20:34:37 -0500 asked a question When two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects are specified, energyPlus clashes.

When two AirflowNetwork:MultiZone:SpecifiedFlowRate objeects are specified, energyPlus clushes. Hi all, I am using Ener

2023-01-17 02:54:30 -0500 commented answer Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API.

Thank you for posting this issue and quick fix.

2023-01-17 02:53:43 -0500 received badge  Supporter (source)
2023-01-17 02:53:36 -0500 marked best answer Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API.

I found a bug in a source file of EnergyPlus/api/datatransfer.cc. (Version 22.2.0)

At the end of the definition of listAllAPIDataCSV function, there are following codes.

char *p = new char[std::strlen(output.c_str())];
std::strcpy(p, output.c_str());
return p;

I think that strcpy function copies null character after the string, so length of new char[] has to be strlen() + 1 byte or more.

2023-01-17 02:53:36 -0500 received badge  Scholar (source)
2023-01-17 02:51:50 -0500 commented question Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API.

Thank you for posting this issue and quick fix.

2023-01-16 01:57:48 -0500 edited question Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API.

Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API. I found a bug in a source file of EnergyPlus/a

2023-01-16 00:52:57 -0500 edited question Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API.

Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API. I found a bug in a source file of EnergyPlus/a

2023-01-15 23:24:24 -0500 asked a question Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API.

Client programs may crash by calling listAllAPIDataCSV of EnergyPlus API. I found a bug in a source file of EnergyPlus/a

2022-08-19 02:23:17 -0500 edited question Can IdealLoadsAirSystem be used in conjunction with both AirflownetWork and AirLoopHVAC at the same time?

Can IdealLoadsAirSystem be used in conjunction with both AirflownetWork and AirLoopHVAC at the same time? Hi all, I am

2022-08-19 02:21:03 -0500 asked a question Can IdealLoadsAirSystem be used in conjunction with both AirflownetWork and AirLoopHVAC at the same time?

Can IdealLoadsAirSystem be used in conjunction with both AirflownetWork and AirLoopHVAC at the same time? Hi all, I am

2022-07-31 20:18:44 -0500 commented answer When used at low flow rates, the airflow direction became opposite to the intended direction.

@Jason DeGraw Thank you for your detailed explanation and advice. I will try to follow your suggested policy of Option 1

2022-07-26 19:43:00 -0500 commented answer When used at low flow rates, the airflow direction became opposite to the intended direction.

I am considering a simulation of the thermal environment in Japanese houses. In Japanese housing, whole house ventilatio

2022-07-26 19:41:24 -0500 commented answer When used at low flow rates, the airflow direction became opposite to the intended direction.

Thank you for your response and confirmation. I am using EnergyPlus 22.1. I noticed your suggestion that if I change one

2022-07-26 07:50:06 -0500 received badge  Student (source)
2022-07-21 07:58:59 -0500 commented question Air distribution with separate zones for supply and return air

Thank you. You are right, I am using EnergyPlus.

2022-07-21 07:58:42 -0500 commented question When used at low flow rates, the airflow direction became opposite to the intended direction.

Thank you. You are right, I am using EnergyPlus.

2022-07-20 18:48:57 -0500 received badge  Organizer (source)
2022-07-20 10:02:04 -0500 asked a question When used at low flow rates, the airflow direction became opposite to the intended direction.

When used at low flow rates, the airflow direction became opposite to the intended direction. Hi all, I am trying to si

2022-07-20 10:01:40 -0500 asked a question Air distribution with separate zones for supply and return air

Air distribution with separate zones for supply and return air Hi all, For air distribution using AirLoopHVAC, I need t