What’s on the Power Cycles poster
A 5-row table: Cycle · Ideal efficiency · Found in.
Ideal air-standard and vapour cycles. Real plant sits well below these.
- Carnot — 1 − Tcold ÷ Thot — The upper bound only
- Otto — 1 − 1 ÷ r^(γ−1) — Petrol engines
- Diesel — Otto form, cut-off term — Compression ignition
- Brayton — 1 − 1 ÷ rp^((γ−1)/γ) — Gas turbines
- Rankine — Net work ÷ heat added — Steam power plant
r is compression ratio, rp is pressure ratio, γ = cp ÷ cv. No cycle can beat Carnot between the same two temperatures.
Questions about the Power Cycles poster
- What’s on the Power Cycles poster?
- A 5-row table: Cycle · Ideal efficiency · Found in. Ideal air-standard and vapour cycles. Real plant sits well below these. Carnot — 1 − Tcold ÷ Thot — The upper bound only; Otto — 1 − 1 ÷ r^(γ−1) — Petrol engines; Diesel — Otto form, cut-off term — Compression ignition; Brayton — 1 − 1 ÷ rp^((γ−1)/γ) — Gas turbines; Rankine — Net work ÷ heat added — Steam power plant. r is compression ratio, rp is pressure ratio, γ = cp ÷ cv. No cycle can beat Carnot between the same two temperatures.
- Who is the Power Cycles poster for?
- Power Cycles 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 Power Cycles poster?
- Comparing engines and plant, or checking whether a claimed efficiency is possible. A wall chart earns its place by being glanceable from where the work is happening, so Power Cycles belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Power Cycles?
- Bernoulli's Equation, Continuity and Drag & Lift sit alongside Power Cycles 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 Power Cycles poster free to download and print?
- Yes. Power Cycles 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 Power Cycles poster print at?
- Power Cycles 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 Power Cycles loses nothing.Printing guide
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