A hot process stream is cooled by indirect heat exchange with feedwater to a boiler, thereby producing saturated steam. Assume that the heat exchanger is isolated. The liquid feed water to the boiler enters at 50 °C, and leaves as saturated steam at 10000 kPa. The flow of the process stream is 1000 kmol/h, the molar enthalpy at the input is 2000 kJ/kmol, and the output enthalpy is 800 kJ/kmol. Calculate a) the flow rate (kg/h) of steam produced. b) If we had to produce water vapor by burning fuel, find its savings (gallons/h), if the heating power of the fuel is 144,000 Btu/gal. Note: make a table of degrees of freedom. Neglect changes in kinetic and potential energy. Data: Boiler feed water enthalpy Ĥ (kJ/kg) ≈ 4.19 T(°C):
A hot process stream is cooled by indirect heat exchange with feedwater to a boiler, thereby producing saturated steam. Assume that the heat exchanger is isolated. The liquid feed water to the boiler enters at 50 °C, and leaves as saturated steam at 10000 kPa. The flow of the process stream is 1000 kmol/h, the molar enthalpy at the input is 2000 kJ/kmol, and the output enthalpy is 800 kJ/kmol. Calculate a) the flow rate (kg/h) of steam produced. b) If we had to produce water vapor by burning fuel, find its savings (gallons/h), if the heating power of the fuel is 144,000 Btu/gal. Note: make a table of degrees of freedom. Neglect changes in kinetic and potential energy.
Data: Boiler feed water enthalpy Ĥ (kJ/kg) ≈ 4.19 T(°C):
![](/static/compass_v2/shared-icons/check-mark.png)
Step by step
Solved in 4 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![Elements Of Electromagnetics](https://www.bartleby.com/isbn_cover_images/9780190698614/9780190698614_smallCoverImage.gif)
![Mechanics of Materials (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134319650/9780134319650_smallCoverImage.gif)
![Thermodynamics: An Engineering Approach](https://www.bartleby.com/isbn_cover_images/9781259822674/9781259822674_smallCoverImage.gif)
![Elements Of Electromagnetics](https://www.bartleby.com/isbn_cover_images/9780190698614/9780190698614_smallCoverImage.gif)
![Mechanics of Materials (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134319650/9780134319650_smallCoverImage.gif)
![Thermodynamics: An Engineering Approach](https://www.bartleby.com/isbn_cover_images/9781259822674/9781259822674_smallCoverImage.gif)
![Control Systems Engineering](https://www.bartleby.com/isbn_cover_images/9781118170519/9781118170519_smallCoverImage.gif)
![Mechanics of Materials (MindTap Course List)](https://www.bartleby.com/isbn_cover_images/9781337093347/9781337093347_smallCoverImage.gif)
![Engineering Mechanics: Statics](https://www.bartleby.com/isbn_cover_images/9781118807330/9781118807330_smallCoverImage.gif)