If the solution manual’s explanation is still unclear, try these:
( T(0) = 80 + \frac2\times 10^5 \times (0.05)^22 \times 25 ) ( = 80 + \frac2\times 10^5 \times 0.002550 ) ( = 80 + \frac50050 = 80 + 10 = 90^\circ C ) If the solution manual’s explanation is still unclear,
Cengel often uses a mix of Celsius and Kelvin. Remember: for temperature differences cap delta cap T If the solution manual’s explanation is still unclear,
Combine series and parallel elements.