How to predict heating load in residential building on hourly basis for whole year using energy plus ?

asked 2021-05-05 10:19:37 -0500

Hardik
101 ●3

updated 2021-05-05 12:23:42 -0500

Ammar De

701 ●15 ●9

hello everyone, I trying to predict the heating load profile in the residential building using energy plus simulation software. I am able to create a day (24 hours) load profile in 15-minute resolutions. for that, I have used reference building and weather file from USA DOE. I am intended to generate a whole year (8760 hours) load profile for a residential building. but I can not understand which parameter I need to consider on an hourly basis load profile for the whole year. I am looking for your suggestions on it.

answered 2021-05-05 12:33:38 -0500

Ammar De

701 ●15 ●9

Since you were able to report the results for a day then you should be able to do the same for a month and/or the entire year. This can be done through the RunPeriod class in the IDF. You can change these parameters based on the period you would like to run the simulation for. Here is an example for a whole year simulation period.

RunPeriod,
    annual,                  !- Name
    1,                       !- Begin Month
    1,                       !- Begin Day of Month
    ,                        !- Begin Year
    12,                      !- End Month
    31,                      !- End Day of Month
    ,                        !- End Year
    ,                        !- Day of Week for Start Day
    Yes,                     !- Use Weather File Holidays and Special Days
    Yes,                     !- Use Weather File Daylight Saving Period
    No,                      !- Apply Weekend Holiday Rule
    Yes,                     !- Use Weather File Rain Indicators
    Yes;                     !- Use Weather File Snow Indicators

Also, make sure that you are reporting the desired output variables on hourly scales by setting the reporting frequency in Output:Variable class to Hourly.