A Systems Design for a Prototype Space Colony

6. H4 FIGURE 6.Hl: T-S DIAGRAM OF IDEAL BRAYTON HEAT PUMP CYCLE ~ ~ ~ ~ T2 ~ ~ C ~ H 0 8 T3 ID H ~ ~ ~ Tl H ID ~ 8 T4 ID P1 8 Entropy 1+2 Isentropic {adiabatic reversible) compression of ga_s 2+3 Constant pressure cooling (through radiator) 3+4 Isentropic (adiabatic reversible) expansion of gas 4+1 'Air' warmed in hull

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