app_energy_signature

Energy signature application

Introduction

An energy signature plots power as a function of outside temperature. This shows the sensitivity of building electrical energy use to weather.

The plot may also include a weather sensitivity metric.

Pseudo-code: Energy signature

Sample explanatory text: "The lack of any pattern may indicate your building is not sensitive to outdoor temperature. A steep slope indicates high sensitivity to outdoor temperature. The balance point is the temperature at which the building does not require any heating or cooling."

Program plotEnergySignature

• Get inputs:
  • oats, vector of outside air temperatures (float).
  • loads, vector of power data recorded at times (float).
• Identify the data of interest:
  • Take the last year of data. Limiting the number of points in the plot ensures that the data are visually distinct.
• Make the energy signature plot:
  • Make an x-y scatter plot, showing y = loads as a function of x = oats.
  • Add the weather sensitivity metric.