Is Your Refrigerator Is Your Refrigerator Running?Running?

By Michael RootBy Michael Root

Plus Excel Linear Plus Excel Linear Interpolating SpreadsheetInterpolating Spreadsheet

This is a two part project whose parts are unrelated to each other

The walls of the refrigerator The walls of the refrigerator are made of Plexiglas and are made of Plexiglas and

sheet metal (with a thin layer sheet metal (with a thin layer of finishing not taken into of finishing not taken into

account)account)

Objective: Find rate of heat Objective: Find rate of heat loss in my refrigerator…per loss in my refrigerator…per

unit areaunit area

ksm = 60 W/m·Kkins = .046 W/m·Khi = 5 W/m·Kho = 5 W/m·KLsm = .00635 mLins = .0254 m

First, Find the R valuesFirst, Find the R values

Then, find the rate of heat Then, find the rate of heat transfer, qtransfer, q

Per Unit Area

Linear InterpolatorLinear Interpolator

The purpose of this Excel The purpose of this Excel spreadsheet is to make it easier to spreadsheet is to make it easier to incorporate data you need incorporate data you need interpolated into your Excel interpolated into your Excel spreadsheet calculations. spreadsheet calculations.

You put in the x and y values, and You put in the x and y values, and they appear in a neat box for you to they appear in a neat box for you to use in your equations.use in your equations.