## Chapter 2

## Q. 2.12

For the flow calorimeter just discussed, the following data were taken with water as the test fluid:

Flow rate = 4.15 g . s^{−1} t_{1} = 0°C t_{2} = 300°C P_{2} = 3 bar

Rate of heat addition from resistance heater = 12,740 W

The water is completely vaporized in the process. Calculate the enthalpy of steam at 300°C and 3 bar based on H = 0 for liquid water at 0°C.

## Step-by-Step

## Verified Solution

If Δ*z* and Δu^{2} are negligible and if W_{s} and H_{1} are zero, then H_{2}= Q, and

H_{2} = \frac{12,740 J⋅s^{-1} }{4.15 g⋅s^{-1}} = 3070 J⋅ g^{-1} or 3070 kJ⋅ kg^{-1}