Homework Answers
I
hope you like my answer. Thank you.
Add Answer to:
A metal plate is placed on a horizontal surface on a sunny day when the solar...
The insolation—the Solar energy delivered to the surface of the Earth—is about 1 kW per square...
The insolation—the Solar energy delivered to the surface of the
Earth—is about 1 kW per square meter. This is the energy you feel
when you are on the beach on a sunny day. What would be the
insolation at Jupiter in those same units? What about at
Pluto?
Problem 4: The insolation-the Solar energy delivered to the surface of the Earth-is about 1 kW per square meter. This is the energy you feel when you are on the beach on...
Aluminium plate painted flat black (solar absorptivity 0.98 and emissivity 0.97) Length of absorber plate is...
Aluminium plate painted flat black (solar absorptivity 0.98 and emissivity 0.97) Length of absorber plate is 1.2 m, width of absorber plate w = 0.8 m, Ambient air temperature = 25°C, effective sky temperature = 10°C, solar radiation rate = 600 w/m2. Calculate the temperature of the absorber plate?
An aluminum plate with a thickness of L=5 mm is mounted in a horizontal position, and...
An aluminum plate with a thickness of L=5 mm is mounted in a horizontal position, and its bottom surface is well insulated. A special, thin coating (with emissivity and solar absorptivity of 0.25) is applied to the top surface. The density ρ and specific heat c of aluminum are known to be 2700 kg/m3 and 900 J/kg · K, respectively. Consider conditions for which the plate is initially at a temperature of ??????=25 °C and its top surface is suddenly...
The Weather Channel reports that it is a hot, muggy day with an air temperature of...
The Weather Channel reports that it is a hot, muggy day with an air temperature of 90°F, a 10 mph breeze out of the southwest, and bright sunshine with a solar insolation of 400 W/m^2. Consider the wall of a metal building over which the prevailing wind blows. The length of the wall in the wind direction is 10 m, and the emissivity is 0.93. Assume that all the solar irradiation is absorbed, that the surroundings are at Tsur =...
The front surface of the glass cover of a flat plate solar collector of dimensions 1...
The front surface of the glass cover of a flat plate solar collector of dimensions 1 m x 1 m has a temperature of 40°C. The collector loses heat by convection to atmospheric air at temperature 14°C. For a wind speed of 5 m/s blowing along and parallel to the glass cover, determine the rate of heat loss by convection. Calculate the net heat loss from the glass cover due to radiation exchange with blackbody surroundings at temperature 7°C if...
A solar collector is placed in direct sunlight where it absorbs energy at the rate of...
A solar collector is placed in direct sunlight where it absorbs energy at the rate of 892 J/s for each square meter of its surface. The emissivity of the solar collector is e = 0.77. What equilibrium temperature does the collector reach? Assume that the only energy loss is due to the emission of radiation.
Determine the overall heat transfer coefficient (UL) for a Flat Plate Solar Collector inclined at 45...
Determine the overall heat transfer coefficient (UL) for a Flat Plate Solar Collector inclined at 45 degrees to the horizontal and facing south. The average ambient temperature for the day is 20 degrees C and the observed glass and absorber plate temperatures are 45 degrees C and 69 degrees C respectively. The system is provided with 6 cm thick insulation (glass wool, k = 0.04 W/m degrees C) at the bottom. The air space between the absorber plate and glass...
A horizontal plate made of an opaque material is subjected to an irradiation of 5200 W...
A horizontal plate made of an opaque material is subjected to an irradiation of 5200 W m2 on its upper surface. The edges and lower surface are well insulated. The upper surface of the plate is maintained at a steady temperature of 480 K. The plate has a total hemispherical absorptivity of 0.45. The spectral emissivity function of the plate material is given as f ι-05, 0 λ 3μm; ε,-07, 3μm1S 15 00, Find (a) the total ollowS: hemispherical emissivity...
7. Calculate monthly average of daily global solar radiation on a horizontal surface verag solar day...
7. Calculate monthly average of daily global solar radiation on a horizontal surface verag solar day hours are 10 hours. Angstrom's constant for Ahmedabad are a 0.28 (Ans. 28270 kJ/m2. day erage value of solar radiation on a horizontal surface for June 22 located in Ahmedabad, (22° o0'N, 73° 10 E) for the month of Apri. A b = 0.48. at the latitude of 10 N, if constants a and b are given as equ day is 0.55 8. Estimate...
An unglazed flat plate solar water heater is orientated perpendicular to the sun such that the in...
An unglazed flat plate solar water heater is orientated perpendicular to the sun such that the incident radiation reaching the plate is 1100 W/m2. The plate has a semi selective coating such that the plate absorptivity and emissivity is equal to unity for all wavelengths up to 2µm, and 0.13 for all λ > 2µm. Coolant flowing in the collector tubes removes heat at such a rate as to maintain the plate temperature at 80°C. Considering the sun to be...
The insolation—the Solar energy delivered to the surface of the
Earth—is about 1 kW per square meter. This is the energy you feel
when you are on the beach on a sunny day. What would be the
insolation at Jupiter in those same units? What about at
Pluto?
Problem 4: The insolation-the Solar energy delivered to the surface of the Earth-is about 1 kW per square meter. This is the energy you feel when you are on the beach on...
The front surface of the glass cover of a flat plate solar collector of dimensions 1 m x 1 m has a temperature of 40°C. The collector loses heat by convection to atmospheric air at temperature 14°C. For a wind speed of 5 m/s blowing along and parallel to the glass cover, determine the rate of heat loss by convection. Calculate the net heat loss from the glass cover due to radiation exchange with blackbody surroundings at temperature 7°C if...
A horizontal plate made of an opaque material is subjected to an irradiation of 5200 W m2 on its upper surface. The edges and lower surface are well insulated. The upper surface of the plate is maintained at a steady temperature of 480 K. The plate has a total hemispherical absorptivity of 0.45. The spectral emissivity function of the plate material is given as f ι-05, 0 λ 3μm; ε,-07, 3μm1S 15 00, Find (a) the total ollowS: hemispherical emissivity...
7. Calculate monthly average of daily global solar radiation on a horizontal surface verag solar day hours are 10 hours. Angstrom's constant for Ahmedabad are a 0.28 (Ans. 28270 kJ/m2. day erage value of solar radiation on a horizontal surface for June 22 located in Ahmedabad, (22° o0'N, 73° 10 E) for the month of Apri. A b = 0.48. at the latitude of 10 N, if constants a and b are given as equ day is 0.55 8. Estimate...
Most questions answered within 3 hours.
-
The following temperatures show the (fictional) daily low
measured at O'Hare airport every January 1st from...
asked 2 minutes ago -
Your friend is interested in the characteristics of fast tree
planters. He searched through the records...
asked 9 minutes ago -
. 0.67 g of Ag is deposited electrolytically from
AgNO3 after a certain period of time...
asked 10 minutes ago -
assuming that the boric acid, h3po3 present at the end of the
borax tritation has a...
asked 9 minutes ago -
When a carbonate solution is acidified, carbon dioxide is
produced.
2H+(aq) + CO32-(aq) → H2O(l) +...
asked 49 minutes ago -
A reaction has the following rate law: Rate =
kr[A][B]2. In experiment 1, the
concentrations of...
asked 46 minutes ago -
king owns a large number of public pay phones. as rhe use of
payphones decline deamatically,...
asked 50 minutes ago -
3.7 - A book is sitting on a table. The mass of the book
is 1...
asked 1 hour ago -
Which term describes the process by which a single strand of DNA
serves as a template...
asked 1 hour ago -
LAB FOOD DRING
ANSWER THE QUESTIONS:
Q1. What value is the moisture content versus time and...
asked 1 hour ago -
You are told that an object has zero acceleration. Two forces on
the object are: F_1...
asked 1 hour ago -
The usual starting point for preparing a master budget is
forecasting or estimating:
Multiple Choice
Sales....
asked 1 hour ago