Answer:
The effective overall heat transfer coefficient for the combination, ![U = 0.19 Btu/hr-ft^2 -F](https://tex.z-dn.net/?f=U%20%3D%200.19%20Btu%2Fhr-ft%5E2%20-F)
Explanation:
According to the question, the total area includes the areas of the wall, window and door.
Total area, A = 100 * 10 = 1000 ft²
Area of the window, ![A_{wind} = 80 ft^2](https://tex.z-dn.net/?f=A_%7Bwind%7D%20%3D%2080%20ft%5E2)
Area of the door, ![A_{d} = 8 * 2.5 = 20 ft^2](https://tex.z-dn.net/?f=A_%7Bd%7D%20%3D%208%20%2A%202.5%20%3D%2020%20ft%5E2)
Area of the wall, ![A_{wall} = A - (A_{d} + A_{wind} )](https://tex.z-dn.net/?f=A_%7Bwall%7D%20%3D%20A%20-%20%28A_%7Bd%7D%20%2B%20A_%7Bwind%7D%20%29)
![A_{wall} = 1000 - ( 80 + 20)\\A_{wall} = 900 ft^2](https://tex.z-dn.net/?f=A_%7Bwall%7D%20%3D%201000%20-%20%28%2080%20%2B%2020%29%5C%5CA_%7Bwall%7D%20%3D%20900%20ft%5E2)
<u>Heat transfer coefficients:</u>
For wall, ![h_{wall} = 0.2Btu/hr-ft^2-F](https://tex.z-dn.net/?f=h_%7Bwall%7D%20%3D%200.2Btu%2Fhr-ft%5E2-F)
For window, ![h_{wind} = 0.1Btu/hr-ft^2-F](https://tex.z-dn.net/?f=h_%7Bwind%7D%20%3D%200.1Btu%2Fhr-ft%5E2-F)
For door, ![h_{d} = 0.1Btu/hr-ft^2-F](https://tex.z-dn.net/?f=h_%7Bd%7D%20%3D%200.1Btu%2Fhr-ft%5E2-F)
To get the overall heat - transfer coefficient for the combination:
![AU = A_{wall} h_{wall} + A_{wind} h_{wind} + A_{d} h_{d}\\1000U = (900*0.2) + (80*0.1) + (20*0.1)\\1000U = 190\\U = 190/1000\\U = 0.19 Btu/hr-ft^2 -F](https://tex.z-dn.net/?f=AU%20%3D%20A_%7Bwall%7D%20h_%7Bwall%7D%20%2B%20A_%7Bwind%7D%20h_%7Bwind%7D%20%2B%20A_%7Bd%7D%20h_%7Bd%7D%5C%5C1000U%20%3D%20%28900%2A0.2%29%20%2B%20%2880%2A0.1%29%20%2B%20%2820%2A0.1%29%5C%5C1000U%20%3D%20190%5C%5CU%20%3D%20190%2F1000%5C%5CU%20%3D%200.19%20Btu%2Fhr-ft%5E2%20-F)
The lane that can be used for both entering and exiting a highway is called; A weave lane
<h3>How to enter a highway?</h3>
When it comes to road highways, there are different terminologies that apply such as Acceleration lane, Deceleration Lane, Interchange, Weave lane, Urban roadway e.t.c
However, when it comes to the one that can be used for both entering and exiting a highway, the correct answer will be Weave Lane because it has both an entrance and an exit for an expressway. Traffic may come onto and leave the expressway at the same location.
Read more about road highway at; brainly.com/question/12961781
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Answer
C
Why
I took the quiz