A reversible cycle receives 40 kJ of heat from one heat

Home » Thermodynamics » Thermodynamics Miscellaneous » Question

A reversible cycle receives 40 kJ of heat from one heat source at a temperature of 127°C and 37 kJ from another heat source at 97°C. The heat rejected (in kJ) to the heat sink at 47°C is________

1. 87
2. 64
3. 68
4. 75

Correct Option: B

	Q₁	+	Q₂	-	Q₃	> 0
	T₁		T₂		T₃

	40	+	37	-	Q₃	= 0
	127 + 273		97 + 273		47 + 273

Q₃ = 64 kJ