Thermal energy data

Technicians measure heat flux as part of a solar thermal energy test. An energy engineer wants to determine how total heat flux is predicted by other variables: insolation, the position of the east, south, and north focal points, and the time of day.

You can use this data to demonstrate Best Subsets Regression.

Worksheet column	Description	Variable type
Heat Flux	The total heat flux, in kwatts	Response
Insolation	The insolation value, in watts/m²	Predictor
East	The position of the focal point in the east direction, in inches	Predictor
South	The position of the focal point in the south direction, in inches	Predictor
North	The position of the focal point in the north direction, in inches	Predictor
Time of Day	The time of day that the data were collected	Predictor

Download ThermalEnergyTest.MTW

Reference

Data are from D.C. Montgomery, E.A. Peck, and G.G. Vining (2012). Introduction to Linear Regression Analysis. John Wiley & Sons.