Transcript What goes into a Fridgex

What we take for granted daily
The Refrigerator (LG LFX28968ST)
Electrical Engineering
 Used in the:
 Button display
 Internal lighting
 Compressor
Voltage change
 Transformer
From 110 to
about 12 V.
Materials Engineering
 What we have:
 Metallic sides
 Aesthetic front
 Insulated box
 FDA approved
water lines
Hydro Engineering
 Where the water goes:
 Dual Ice makers
 Water dispenser
 Water filter
 Moving hoses to door
How we get Ice
Filtration device
Uses carbon particles
to filter microscopic
particles
25-125 psi
200 gallon lifetime
.5 gallons per
minute flow rate
Operates between
33 and 100 degrees
Fareinheit
Pneumatic Engineering
 Used in:
 The compressor
 Air filtration system
How does a compressor work?
How much do we compress?
 To go from 100 degrees to 41 degrees.
 Convert to absolute temperature
 501/560=89.46 %
We need a system that can
compress our air at least
10% for the fridge.
More for the freezer.
Air Filtration System
 Reduces odor, removes sediment, dirt, and rust.
Thermodynamic Engineering
 Used in:
 Separate temperature for freezer/fridge
 Chilling water/ making ice
 Exact temperature settings
Basic Engineering
 Wheels on bottom for a mechanical advantage
Fridge weighs 342 lb.
I bench 250lb.
Can I move this fridge?
Conclusion
 A refrigerator has many types of engineering.
 We can use basic calculations to figure out some of the
operating conditions of a refrigerator.