| Process | Condition | Formula for Work ( w ) (kJ/kg) | | :--- | :--- | :--- | | | ( v = \textconst. ) | ( w = 0 ) | | Isobaric | ( p = \textconst. ) | ( w = p (v_2 - v_1) ) | | Isothermal | ( T = \textconst. ) | ( w = R T \ln\left(\fracv_2v_1\right) ) 或 ( R T \ln\left(\fracp_1p_2\right) ) | | Adiabatic | ( q = 0 ) | ( w = \fracR (T_1 - T_2)\kappa - 1 ) |
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Osnove Termodinamike i Termotehnike: Sveobuhvatni Vodič i Primjena u Praksi
): Temperatura je konstantna. Koristeći jednačinu stanja idealnog gasa ( ), rad se računa kao:
Uvodi pojam entropije. Toplota ne može spontano prelaziti s hladnijeg na toplije tijelo. Svi prirodni procesi teže povećanju nereda (entropije). termodinamika i termotehnika pdf work
Also known as expansion or compression work, it is the work done by or on a closed system due to volume changes. Technical Work ( cap W sub t
Often expressed as , the First Law is the principle of energy conservation. It states that the internal energy of a closed system can be changed in only two ways: by adding or removing heat (Q) or by having the system do work (W) on its surroundings. This law mathematically formalizes the concept of energy as a convertible quantity, but one that is never created or destroyed.
) u termodinamici i termotehnici omogućava nam da dizajniramo efikasnije mašine i smanjimo potrošnju energije. Od jednostavnog širenja gasa u cilindru do složenih energetskih postrojenja, zakoni termodinamike ostaju nepromenjivi vodič za svakog inženjera.
Be cautious. Blurry diagrams (Mollier charts) are useless. You cannot accurately read entropy values from a low-res scan. Invest in a clean, searchable PDF (text layer included). | Process | Condition | Formula for Work
Tražite zvanična izdanja Mašinskih ili Tehnoloških fakulteta (npr. Beograd, Novi Sad, Kragujevac, Niš, Podgorica, Sarajevo, Zagreb). Materijali sa oznakom .edu ili .rs/.ba/.me/.hr često sadrže kompletne izvode formula za rad.
termodinamika i termotehnika pdf work
graph TD subgraph "Izvori i Spremnici" T_H("Topli Spremnik<br>(Visoka Temperatura)") T_C("Hladni Spremnik<br>(Niska Temperatura)") end subgraph "Procesi" A[("Toplinski Stroji<br>(Daju Rad \( W \))")] -->|Odaju toplinu \( Q_C \) <br>Spremniku niske temperature| T_C T_H -->|Primaju toplinu \( Q_H \) <br>s toplog spremnika| A
If two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. This is the basis for temperature measurement. ) | ( w = R T \ln\left(\fracv_2v_1\right)
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While heat and work are both transient forms of energy transfer across a system boundary, work is distinct because it involves a force acting through a distance. 2. The Concept of Work in Thermotechnics
Energija se ne može stvoriti ni uništiti, već samo promijeniti oblik. Unutrašnja energija sistema mijenja se vršenjem rada ili razmjenom toplote.