Question
In: Mechanical Engineering
Estimate the percentage of specular component of total solar radiation onto flat surfaces. Consider the following...
Estimate the percentage of specular component of total solar radiation onto flat surfaces. Consider the following flat surfaces: (a) surface roughness of 0.1 µm; (b) surface roughness of 1.0 µm; and (c) surface roughness of 10 µm
Solutions
samet mamat answered 2 years agoRelated Solutions
Why do surfaces absorb solar radiation differently?
Why do surfaces absorb solar radiation differently?
Analytical Solution steps For a flat plate solar collector, with water as the working fluid, consider...
Analytical Solution steps
For a flat plate solar collector, with water as the working
fluid, consider a design for heating water from 22°C to 60°C. The
temperature of the air and the surroundings is 310 K. The system is
designed for a flow rate of 0.03 gpm. The water exhibits fully
developed, laminar flow in a 0.05 diameter pipe, with a constant
surface flux. The collector plate experiences losses due to
convection and radiation, which can be accounted for using...
if you are designing a photovoltaic solar system for a university building, estimate the total load...
if you are designing a photovoltaic solar system for a
university building, estimate the total load for the building.
please show the different loads for each component ( projector,
computer, lights, printers,etc...) in watts? how many of these are
in the building and whats the total load? assume the building
area?
Consider a hard disk with the following specifications: 3.5in diameter 3600RPM 20 platters, and 2 surfaces...
Consider a hard disk with the following specifications:
3.5in diameter
3600RPM
20 platters, and 2 surfaces per platter
Capacity: 40GB
Number of cylinders: 1024
1 block = 4KB
20% overhead between blocks (gaps)
Average seek time: 10ms.
Compute the following:
the average time to access a block?
the average time to read 4 adjacent blocks?
the average time to read one track, starting at a specified
location?
Which of the following is true about the above computation?
A. The average...
The total risk measures the total variability or volatility of an investment. Which of the following is not a way to estimate total risk?
The total risk measures the total variability or volatility of
an investment. Which of the following is not a way to estimate
total risk? By forming an objective probability
distribution based on historical data. By assigning subjective probabilities to
various possible outcomes. By calculating the beta of the
investment. None of the above arrives at an estimate of
total risk.
Consider the following statements as they apply to radiation sources and atomic spectroscopy. Decide if each...
Consider the following statements as they apply to radiation
sources and atomic spectroscopy. Decide if each is true or
false.
True or False Room lights contribute significantly to
the background noise in AAS.
True or False Photons transmitted through the sample are
detected in AES.
True or False The fill gas in a hollow cathode lamp is
inert and does not play an important role in the emission of
characteristic radiation from a hollow cathode lamp.
True or False Neutral Ca atoms, singly charged...
Consider the following functions from ℤ × ℤ → ℤ. Which functions are onto? Justify your...
Consider the following functions from ℤ × ℤ → ℤ. Which
functions are onto? Justify your answer by proving the function is
onto or providing a counterexample and explaining why it is a
counterexample.
(a) f(x,y) = xy + 3
(b) f(x,y) = | xy | + 10
(c) f(x,y) = ⌊( x+y ) /
3⌋
Consider the following functions from ℤ × ℤ → ℤ. Which functions are onto? Justify your...
Consider the following functions from ℤ × ℤ → ℤ. Which
functions are onto? Justify your answer by proving the function is
onto or providing a counterexample and explaining why it is a
counterexample.
(a) f(x,y) = xy + 3
(b) f(x,y) = | xy | + 10
(c) f(x,y) = ⌊( x+y ) /
3⌋
Consider the following “Total Cost” function:
Consider the following “Total Cost” function: Total
Cost = 4Q3 – 204Q2 + 700Q +
2500 a.) Solve for the
“inflection point” of this function ( show your work). b.) Which Q has the LOWEST
“Marginal Cost” ( give a numerical answer; briefly explain
how your answer to a.) is relevant).
Consider a circular (cylindrical) pin fin attached to a flat plane with the following properties: k...
Consider a circular (cylindrical) pin fin attached to a flat
plane with the following properties:
k = 237 W/mC (thermal conductivity)
L = 100mm (length)
r = 2mm (radius)
T_b = 80 C (temperature at fin base)
T_inf = 20 C (air temperature)
h = 12 W/m^2C (Convection Coefficient)
Find the following using the infinitely long and insulated
(adiabatic) tip methods:
The temperature of the fin at a distance L/2
Heat transfer rate from the fin
Fin efficiency
Fin Effectiveness...
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