Fridge or Heat Pump?One machine, two purposes, and why the heat pump always wins on paper.Mechanical EngineeringRefrigeratorYou want the cold space coldCOP = heat removed ÷ work inIdeal COP = Tc ÷ (Th − Tc)Domestic units run about 2 to 4Heat pumpYou want the warm space warmCOP = heat delivered ÷ work inIdeal COP = Th ÷ (Th − Tc)Always exactly 1 above the fridgeTHE DIFFERENCE THAT MATTERSSame hardware. Which side you call useful is what sets the number.COP collapses as the temperature lift grows, so a quoted figure meansnothing without its test conditions.Fridge or Heat Pump?learnposters.com
Fridge or Heat Pump? — printable engineering wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the Fridge or Heat Pump? poster

Refrigerator against Heat pump, side by side.

COP collapses as the temperature lift grows, so a quoted figure means nothing without its test conditions.

Questions about the Fridge or Heat Pump? poster

What’s on the Fridge or Heat Pump? poster?
Refrigerator against Heat pump, side by side. Refrigerator: You want the cold space cold; Refrigerator: COP = heat removed ÷ work in; Refrigerator: Ideal COP = Tc ÷ (Th − Tc); Refrigerator: Domestic units run about 2 to 4; Heat pump: You want the warm space warm; Heat pump: COP = heat delivered ÷ work in; Heat pump: Ideal COP = Th ÷ (Th − Tc); Heat pump: Always exactly 1 above the fridge; Same hardware. Which side you call useful is what sets the number.. COP collapses as the temperature lift grows, so a quoted figure means nothing without its test conditions.
Who is the Fridge or Heat Pump? poster for?
Fridge or Heat Pump? belongs to the Mechanical Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning thermofluids can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the Fridge or Heat Pump? poster?
Whenever a coefficient of performance is quoted and you must check what it counts. A wall chart earns its place by being glanceable from where the work is happening, so Fridge or Heat Pump? belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
What other posters go with Fridge or Heat Pump??
Bernoulli's Equation, Continuity and Drag & Lift sit alongside Fridge or Heat Pump? in the Mechanical Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Bernoulli's EquationContinuityDrag & Lift
Is the Fridge or Heat Pump? poster free to download and print?
Yes. Fridge or Heat Pump? downloads as a free PDF with no account, no email and no watermark, like everything else in the Mechanical Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Fridge or Heat Pump? poster print at?
Fridge or Heat Pump? is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Fridge or Heat Pump? loses nothing.Printing guide

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