Question

ss.19.2.8

The picture shows a circular process of an ideal monatomic gas in the amount of 1 mole in the coordinates (p,V). In which sections of the process does the gas absorb heat and in which sections does it release heat? Find the efficiency of the cycle. The pressures p1, p2 and volumes V1, V2 are given.

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a clear explanation is highly appreciated! Thanks!

Answer 1

n . I mole ९ Prouss 1-2 Pitt4 Q1-2 = nwat 2 21–2 = IX BR (T. -T) 21-2= 3(B2V - PV) = 3W (Ps-P) -32 23.33 160/18 ) = ş (ners - net) 02-32 (V-vi) 93-4 = nw (ty-Ty) = { (RRTY - DRT) 834 = cov - Bva) 24-1 = 1611, - Ty) = {(ART, - ART,) ŞOV - PIN)

Here, and pia R3-4 and and Q, 3 Qul are are positive negalive We know that heal added to the system are positive and heat rejected by the system are negative :) Qi-l and Q2-3 are heal added to thе ѕуем р а хоз bed by the system & 83.4 and Qu-e are heal rejected by the system Work done : Area of P-V came = What : (P-Pa) [V, -V) - PAV, + P., -PV, -P2 V Total heal added a 24 (9,-) + FP(x,-vo) e lehet BPX - 30MI 4 SP V - IBV efficiency, n = Wnet Qadded a added