Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
3

How do I change the boiler curve type from Cubic to Quadratic?

asked 2018-10-26 20:13:01 -0600

Ranjani's avatar

updated 2018-10-27 10:53:11 -0600

image description

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
1

answered 2018-11-01 17:44:14 -0600

While EnergyPlus plus supports most curve types for Normalized Boiler Efficiency, and the OpenStudio API method to create a Boiler accepts any type of curve, the OpenStudio Application currently doesn't let you change the curve type for an existing Boiler.

The boilers in the default library for the OpenStudio application uses Biquadratic, and you have found one that uses Cubic. Here are two possible approaches to use a different curve type.


1. Find another OSM that uses your desired curve type, and load the OSM as a library and then drag in the Boiler, and modify settings as needed.
2. Write a measure to change the curve type for existing boilers. Code would like something like what is below. Then you would could modify the curve values in the GUI, or make them measure arguments.

model.getBoilerHotWaters.each do |boiler|
  curve = OpenStudio::Model::CurveQuadratic.new(model)
  boiler.setNormalizedBoilerEfficiencyCurve(curve)
end
edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Training Workshops

Careers

Question Tools

1 follower

Stats

Asked: 2018-10-26 20:13:01 -0600

Seen: 249 times

Last updated: Nov 01 '18