Overview of the Openstudio Fault Models Gem

Creating a comprehensive library of OpenStudio fault models

Features

• Physics-based fault impact simulation within the capability of EnergyPlus/OpenStudio

• Fault intensity implementation simulating how severe faults are (e.g., how much portion is fouled in the condenser heat exchanger) and estimating the impact of a fault in different fault intensities.

• Fault evolution implementation simulating evolving/increasing fault intensity through certain period of time.

Future goals

• what are common/typical faults in different sample spaces (e.g., HVAC system type, building operation type, building location etc.) ?

• how often (e.g., incidence and prevalence) faults occur in different sample spaces (e.g., HVAC system type, building operation type, building location etc.) ?

Past Publications Related to this Work

• Development of Fault Models for Hybrid Fault Detection and Diagnostics Algorithm

• Empirical modeling of the impacts of faults on water-cooled chiller power consumption for use in building simulation programs

• Common Faults and Their Prioritization in Small Commercial Buildings

• Commercial Fault Detection and Diagnostics Tools: What They Offer, How They Differ, and What’s Still Needed

• Assessing barriers and research challenges for automated fault detection and diagnosis technology for small commercial buildings in the United States

• Metrics and Methods to Assess Building Fault Detection and Diagnosis Tools

• A performance evaluation framework for building fault detection and diagnosis algorithms

• Representing Small Commercial Building Faults in EnergyPlus, Part I: Model Development

• Representing Small Commercial Building Faults in EnergyPlus, Part II: Model Validation

• Research Challenges and Directions in HVAC Fault Prevalence

Installation

Add this line to your application's Gemfile:

gem 'openstudio-fault-models'

And then execute:

$ bundle

Or install it yourself as:

$ gem install 'openstudio-fault-models'

Usage

To be filled out later.

TODO

• Remove measures from OpenStudio-Measures to standardize on this location
• Update measures to code standards
• Review and fill out the gemspec file with author and gem description

Releasing

• Update change log
• Update version in /lib/openstudio/openstudio-fault-models/version.rb
• Merge down to master
• Release via github
• run rake release from master