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

Revision history [back]

Site Outdoor Air Drybulb Temperature differed from the one I inputted

Greetings. I just started using OpenStudio one month ago for building heating and cooling load simulations. I work with SketchUp 2024, OpenStudio Application 1.8.0, and EnergyPlus 24.1. I used climate data and selected the weather file "JPN_TK_Tokyo.Intl.AP-Haneda.AP.476710_TMYx.2009-2023," specifying 2019 as the coverage year. I found that the simulation results on outdoor air drybulb temperature were different from the one I inputted. I added an " AddOutputVariable " measure to output the "Site Outdoor Air Drybulb Temperature" and translated the results into a CSV file by ReadVarsESO. However, as shown in the picture, the temperature on June 2 appears unrealistic, and it seems the entire timeline shifted to the right by about three days.image description


I have checked the EPW file using DView and reviewed the weather-related section of the Input Output Reference for EnergyPlus 24.1. I also checked the introduction of DView, but I still cannot identify the cause of this issue. I used Elements to check the epw file to see if there were any problems, and it kept the same chart as the DView's, so I thought there might be some issues with my os model.image descriptionimage description May somenoe kindly give some ideas which may leads it? I would happily share my model. Any guidance would be greatly appreciated.my model

Site Outdoor Air Drybulb Temperature differed from the one I inputted

Greetings. I just started using OpenStudio one month ago for building heating and cooling load simulations. I work with SketchUp 2024, OpenStudio Application 1.8.0, and EnergyPlus 24.1. I used climate data and selected the weather file "JPN_TK_Tokyo.Intl.AP-Haneda.AP.476710_TMYx.2009-2023," specifying 2019 as the coverage year. I found that the simulation results on outdoor air drybulb temperature were different from the one I inputted. I added an " AddOutputVariable " measure to output the "Site Outdoor Air Drybulb Temperature" and translated the results into a CSV file by ReadVarsESO. However, as shown in the picture, the temperature on June 2 appears unrealistic, and it seems the entire timeline shifted to the right by about three days.image description


I have checked the EPW file using DView and reviewed the weather-related section of the Input Output Reference for EnergyPlus 24.1. I also checked the introduction of DView, but I still cannot identify the cause of this issue. I used Elements to check the epw file to see if there were any problems, and it kept the same chart as the DView's, so I thought there might be some issues with my os model.image descriptionimage description May somenoe kindly give some ideas which may leads it? I would happily share my model. Any guidance would be greatly appreciated.my model

Site Outdoor Air Drybulb Temperature differed from the one I inputted

Greetings. I just started using OpenStudio one month ago for building heating and cooling load simulations. I work with SketchUp 2024, OpenStudio Application 1.8.0, and EnergyPlus 24.1. I used climate data and selected the weather file "JPN_TK_Tokyo.Intl.AP-Haneda.AP.476710_TMYx.2009-2023," specifying 2019 as the coverage year. I found that the simulation results on outdoor air drybulb temperature were different from the one I inputted. I added an " AddOutputVariable " measure to output the "Site Outdoor Air Drybulb Temperature" and translated the results into a CSV file by ReadVarsESO. However, as shown in the picture, the temperature on June 2 appears unrealistic, and it seems the entire timeline shifted to the right by about three days.image description


I have checked the EPW file using DView and reviewed the weather-related section of the Input Output Reference for EnergyPlus 24.1. I also checked the introduction of DView, but I still cannot identify the cause of this issue. I used Elements to check the epw file to see if there were any problems, and it kept the same chart as the DView's, so I thought there might be some issues with my os model.image descriptionimage description May somenoe kindly give some ideas which may leads it? I would happily share my model. Any guidance would be greatly appreciated.my model