Solution :
Given :
![$V_1 = 7 \ m/s$](https://tex.z-dn.net/?f=%24V_1%20%3D%207%20%5C%20m%2Fs%24)
Operation time,
= 3000 hours per year
![$V_2 = 10 \ m/s$](https://tex.z-dn.net/?f=%24V_2%20%3D%2010%20%5C%20m%2Fs%24)
Operation time,
= 2000 hours per year
The density, ρ = ![$1.25 \ kg/m^3$](https://tex.z-dn.net/?f=%241.25%20%5C%20kg%2Fm%5E3%24)
The wind blows steadily. So, the K.E. = ![$(0.5 \dot{m} V^2)$](https://tex.z-dn.net/?f=%24%280.5%20%5Cdot%7Bm%7D%20V%5E2%29%24)
![$= \dot{m} \times 0.5 V^2$](https://tex.z-dn.net/?f=%24%3D%20%5Cdot%7Bm%7D%20%5Ctimes%200.5%20V%5E2%24)
The power generation is the time rate of the kinetic energy which can be calculated as follows:
Power = ![$\Delta \ \dot{K.E.} = \dot{m} \frac{V^2}{2}$](https://tex.z-dn.net/?f=%24%5CDelta%20%5C%20%5Cdot%7BK.E.%7D%20%3D%20%5Cdot%7Bm%7D%20%5Cfrac%7BV%5E2%7D%7B2%7D%24)
Regarding that
. Then,
Power
→ Power = constant x ![$V^3$](https://tex.z-dn.net/?f=%24V%5E3%24)
Since,
is constant for both the sites and the area is the same as same winf turbine is used.
For the first site,
Power, ![$P_1= \text{const.} \times V_1^3$](https://tex.z-dn.net/?f=%24P_1%3D%20%5Ctext%7Bconst.%7D%20%5Ctimes%20V_1%5E3%24)
![$P_1 = \text{const.} \times 343 \ W$](https://tex.z-dn.net/?f=%24P_1%20%3D%20%5Ctext%7Bconst.%7D%20%5Ctimes%20343%20%5C%20W%24)
For the second site,
Power, ![$P_2 = \text{const.} \times V_2^3 \ W$](https://tex.z-dn.net/?f=%24P_2%20%3D%20%5Ctext%7Bconst.%7D%20%5Ctimes%20V_2%5E3%20%5C%20W%24)
Answer:
0.304 L of Freon is needed
Explanation:
Q = mCT
Q is quantity of energy that must be removed = 47 BTU = 47×1055.06 = 49587.82 J
C is specific heat of Freon = 74 J/mol.K = 74 J/mol.K × 1 mol/120 g = 0.617 J/g.K
T is temperature in the area of Mars = 189 K
m = Q/CT = 49587.82/(0.617×189) = 452.23 g = 452.24/1000 = 0.45223 kg
Density of Freon = specific gravity of Freon × density of water = 1.49 × 1000 kg/m^3 = 1490 kg/m^3
Volume of Freon = mass/density = 0.45223/1490 = 0.000304 m^3 = 0.000304×1000 = 0.304 L
Answer:
Aerobic biological treatment process
Explanation:
Aerobic biological treatment process in which micro-organisms, in the presence of oxygen, metabolize organic waste matter in the water, thereby producing more micro-organisms and inorganic waste matter like CO₂, NH₃ and H₂O.
Answer:
See explaination
Explanation:
Lets first consider the term Isentropic efficiency. The isentropic efficiency of a compressor or pump is defined as the ratio of the work input to an isentropic process, to the work input to the actual process between the same inlet and exit pressures. IN practice, compressors are intentionally cooled to minimize the work input.
Please kindly check attachment for the step by step solution of the given problem.
Answer: Advanced technologixal machines
Explanation: such as big cranes, multiple workers helping creat said structure, and big bull dozers