Black tee shown back and front: the back has a blue blueprint sheet with a white and orange Carnot cycle T-s diagram; the front has a small Carnot cycle rectangle diagram on the left chest.

Weekend Efficiency Carnot Cycle T-Shirt, Thermodynamics Engineer Tee, Funny Mechanical Engineering Gift

Comfort Colors 1717 / Black / S
$29.99
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Black tee shown back and front: the back has a blue blueprint sheet with a white and orange Carnot cycle T-s diagram; the front has a small Carnot cycle rectangle diagram on the left chest.
  • Black tee shown back and front: the back has a blue blueprint sheet with a white and orange Carnot cycle T-s diagram; the front has a small Carnot cycle rectangle diagram on the left chest.
  • Back of a black Comfort Colors 1717 tee with the large Weekend Efficiency Carnot Cycle print: a blue blueprint sheet with a white and orange Carnot cycle T-s diagram.
  • Front of a black Comfort Colors 1717 tee with a small Carnot cycle rectangle diagram on the left chest.
  • Close-up of the Weekend Efficiency Carnot Cycle artwork showing the blueprint grid, the hatched W-net area, the numbered states and the efficiency equation.
  • Black tee shown back and front: the back has a blue blueprint sheet with a white and orange Carnot cycle T-s diagram; the front has a small Carnot cycle rectangle diagram on the left chest.
  • Back of a black Comfort Colors 1717 tee with the large Weekend Efficiency Carnot Cycle print: a blue blueprint sheet with a white and orange Carnot cycle T-s diagram.
  • Front of a black Comfort Colors 1717 tee with a small Carnot cycle rectangle diagram on the left chest.
  • Close-up of the Weekend Efficiency Carnot Cycle artwork showing the blueprint grid, the hatched W-net area, the numbered states and the efficiency equation.
Weekend Efficiency Carnot Cycle T-Shirt, Thermodynamics Engineer Tee, Funny Mechanical Engineering Gift

Weekend Efficiency Carnot Cycle T-Shirt, Thermodynamics Engineer Tee, Funny Mechanical Engineering Gift

$29.99
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Saturday adds heat at T-Friday. Sunday expands with no plans. Sunday night rejects dread at T-Monday. Monday through Friday is compression. The Carnot cycle as lived, drawn on a blueprint sheet, with the only efficiency equation that matters: one minus T-Monday over T-Friday.

What you get

  • Front: Left-chest T-s diagram of a Carnot cycle, Friday on top, Monday on the bottom, "Weekend Efficiency"
  • Back: Large blueprint-sheet T-s diagram of the Carnot cycle with four labeled legs (Saturday, Sunday, Sunday Night, Mon–Fri), Q-in and Q-out arrows, hatched net work "= the weekend", the efficiency equation and a drawing title block
  • Printed with premium DTF transfers and heat-pressed by hand in Charleston, SC

Choose your shirt

  • Comfort Colors 1717: heavyweight 6.1 oz garment-dyed cotton, relaxed fit (S–3XL)
  • Bella+Canvas 3001: lightweight 4.2 oz Airlume cotton, softer retail fit (S–3XL)

Colors may vary slightly by screen.

Care

Wash inside out in cold water, tumble dry low or hang dry, don't iron the print.

Production & disclosure

Designed by Elevated Designs LLC using digital design tools, with AI assistance. Printed and pressed to order in Charleston, SC.

Factor of Safety Co. · mechanical engineers — designed by Elevated Designs and printed to order in Charleston, SC.

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