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[A previous post](https://unmethours.com/question/18763/what-is-the-source-for-the-vav-fan-power-coefficients-in-the-doe-commercial-reference-buildings/) helped clarify the origin of fan performance curves. I'm also curious about the source and derivation of pump performance curves. The image below is from the [ANSI/ASHRAE/IES Standard 90.1-2022 Performance Rating Method Refer...

Has anyone figured out how to add a custom load for electric vehicles? It'd be great to analyze a PV array and battery storage for electric vehicle use and charging based on electric consumption of the vehicle and average daily mileage.

Hi, I am currently working on an energy model in OpenStudio. I am a complete beginner with OpenStudio, as I normally use IES VE. I created my building geometry in IES VE and imported it into OpenStudio using a GBXML file. My current challenge is assigning the default NECB space types to my spaces. I have found the OpenStudio Standards GitHub repository, which appears to contai...

Hello everyone, I am modeling a building in EnergyPlus and comparing two wall constructions: a reference wall without PCM and the same wall with a PCM layer (using MaterialProperty:PhaseChange with the CondFD solution algorithm). My goal is to evaluate the insulation effect of the PCM by comparing the heat transmitted through the wall in both cases. I could not determine which...

Using Openstudio 1.12 the program crashes whenever I try to clear the search dialog in the Library tabs. Anyone having this issue?