Thermodynamics Formula Sheet

January 3, 2018 | Author: Daniel Ortega | Category: N/A
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Carnot Cycle

Reciprocating Engines Compression ratio: Mean effective pressure:

Power:

Diesel Cycle

1-2 Isentropic compression 2-3 Constant-volume heat addition 3-4 Isentropic expansion 4-1 Constant-volume heat rejection

Otto Cycle

1-2 Isentropic compression 2-3 constant-pressure heat addition 3-4 Isentropic expansion 4-1 Constant-volume heat rejection

Cutoff ratio:

Compression efficiency

Expansion efficiency

Ericsson Cycle Process 1-2: Reversible isothermal compression. Process 2-3: Constant pressure heat addition. Process 3-4: Reversible isothermal expansion. Process 4-1: Constant pressure heat rejection.

P2=P3, P1=P4, 𝜂𝑆𝑡𝑖𝑟𝑙𝑖𝑛𝑔 = 1 − 𝑇𝑇𝐿

𝐻 Stirling Cycle 1-2 isothermal expansion heat addition

2-3 const. vol. heat removal 3-4 isothermal compression 4-1 const. vol. heat addition

Brayton Cycle

1-2 Isentropic compression (in a compressor) 2-3 Constant-pressure heat addition 3-4 Isentropic expansion (in a turbine) 4-1 Constant-pressure heat rejection

Specific Heats:

Regeneration

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