Answer:
![\dot Q_{in} = 372.239\,MW](https://tex.z-dn.net/?f=%5Cdot%20Q_%7Bin%7D%20%3D%20372.239%5C%2CMW)
Explanation:
The water enters to the pump as saturated liquid and equation is modelled after the First Law of Thermodynamics:
![w_{in} + h_{in}- h_{out} = 0](https://tex.z-dn.net/?f=w_%7Bin%7D%20%2B%20h_%7Bin%7D-%20h_%7Bout%7D%20%3D%200)
![h_{out} = w_{in}+h_{in}](https://tex.z-dn.net/?f=h_%7Bout%7D%20%3D%20w_%7Bin%7D%2Bh_%7Bin%7D)
![h_{out} = 12\,\frac{kJ}{kg} + 191.81\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=h_%7Bout%7D%20%3D%2012%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D%20%2B%20191.81%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
![h_{out} = 203.81\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=h_%7Bout%7D%20%3D%20203.81%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
The boiler heats the water to the state of saturated vapor, whose specific enthalpy is:
![h_{out} = 2685.4\,\frac{kJ}{kg}](https://tex.z-dn.net/?f=h_%7Bout%7D%20%3D%202685.4%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D)
The rate of heat transfer in the boiler is:
![\dot Q_{in} = \left(150\,\frac{kg}{s}\right)\cdot \left(2685.4\,\frac{kJ}{kg}-203.81\,\frac{kJ}{kg} \right)\cdot \left(\frac{1\,MW}{1000\,kW} \right)](https://tex.z-dn.net/?f=%5Cdot%20Q_%7Bin%7D%20%3D%20%5Cleft%28150%5C%2C%5Cfrac%7Bkg%7D%7Bs%7D%5Cright%29%5Ccdot%20%5Cleft%282685.4%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D-203.81%5C%2C%5Cfrac%7BkJ%7D%7Bkg%7D%20%5Cright%29%5Ccdot%20%5Cleft%28%5Cfrac%7B1%5C%2CMW%7D%7B1000%5C%2CkW%7D%20%5Cright%29)
![\dot Q_{in} = 372.239\,MW](https://tex.z-dn.net/?f=%5Cdot%20Q_%7Bin%7D%20%3D%20372.239%5C%2CMW)
Answer:
An intense property is a physical attribute of a system that is independent of the size of the system or the quantity of material it contains. An extensive property of a system, on the other hand, is dependent on the size of the system or the amount of material in it.
Explanation:
Ucsaaaaauxx627384772938282’cc ed un e uff ridicolizzarla +golfista
Answer:
The coefficient of thermal expansion tells us how much a material can expand due to heat.
Explanation:
Thermal expansion occurs when a material is subjected to heat and changes it's shape, area and volume as a result of that heat. How much that material changes is dependent on it's coefficient of thermal expansion.
Different materials have different coefficients of thermal expansion (i.e. It is a material property and differs from one material to the next). It is important to understand how materials behave when heated, especially for engineering applications when a change in dimension might pose a problem or risk (eg. building large structures).
Answer:
False
Explanation:
<u>Alternat</u>or produces <u>alternat</u>ing current ....diodes convert this to direct current