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 cover has a thickness of 7.5 cm and the emissivity of the glass and plate are 0.88 and 0.95 respectively
Homework Answers
Summary:The
value of overall heat transfer coefficient is 1.355 W/m2℃.Add Answer to:
Determine the overall heat transfer coefficient (UL) for a Flat
Plate Solar Collector inclined at 45...
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...
Problem 3: The specifications of a flat-plate collector is as follows: τ = 0.88, α 0.97, U = 1.3 Btu/h ft2 °F. The heat removal factor for the collector is 0.92, the solar insolation is 210 Btu/h ft2...
Problem 3: The specifications of a flat-plate collector is as follows: τ = 0.88, α 0.97, U = 1.3 Btu/h ft2 °F. The heat removal factor for the collector is 0.92, the solar insolation is 210 Btu/h ft2, and the ambient air temperature is 60°F. Determine (a) the collector efficiency if the water enters the collector at 115°F and (b) the temperature of water at which the collector efficiency is zero. Take the incident angle modifier to be 1
Problem...
A flat-plate solar collector is used to heat atmospheric air flowing through a rectangular channel. The...
A flat-plate solar collector is used to heat atmospheric air flowing through a rectangular channel. The bottom surface of the channel is well insulated, while the top surface is subjected to a uniform heat flux 96,which is due to the net effect of solar radiation absorption and heat exchange between the absorber and cover plates. W Transparent cover plate Absorber plate Rectangular channel Air Tmi, m Beginning with an appropriate differential control volume, obtain an equation that could be used...
Both please 13.3 Estimate the amount of solar heating that is lost as a result of using one or two tempered 1/8 in thick glass plates covering a flat-plate absorber. The transmission coefficient for r...
Both please
13.3 Estimate the amount of solar heating that is lost as a result of using one or two tempered 1/8 in thick glass plates covering a flat-plate absorber. The transmission coefficient for radiation is 2% for wavelengths greater than 3 m and 80% for wavelengths ranging from 0.2 to 3 um. 13.4 The amount of solar energy captured in a given application is expressed in terms of how much thermal energy is delivered relative to the total demand...
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...
Problem 3: The specifications of a flat-plate collector is as follows: τ = 0.88, α 0.97, U = 1.3 Btu/h ft2 °F. The heat removal factor for the collector is 0.92, the solar insolation is 210 Btu/h ft2, and the ambient air temperature is 60°F. Determine (a) the collector efficiency if the water enters the collector at 115°F and (b) the temperature of water at which the collector efficiency is zero. Take the incident angle modifier to be 1
Problem...
A flat-plate solar collector is used to heat atmospheric air flowing through a rectangular channel. The bottom surface of the channel is well insulated, while the top surface is subjected to a uniform heat flux 96,which is due to the net effect of solar radiation absorption and heat exchange between the absorber and cover plates. W Transparent cover plate Absorber plate Rectangular channel Air Tmi, m Beginning with an appropriate differential control volume, obtain an equation that could be used...
Both please
13.3 Estimate the amount of solar heating that is lost as a result of using one or two tempered 1/8 in thick glass plates covering a flat-plate absorber. The transmission coefficient for radiation is 2% for wavelengths greater than 3 m and 80% for wavelengths ranging from 0.2 to 3 um. 13.4 The amount of solar energy captured in a given application is expressed in terms of how much thermal energy is delivered relative to the total demand...
Most questions answered within 3 hours.
-
Find the critical value(s) and rejection region(s) for a
two-tailed chi-square test with a sample size...
asked 1 minute from now -
One of your experts gave me an answer of $7.36 but there are
many different answers...
asked 3 minutes ago -
Petrus Framing's cost formula for its supplies cost is $1,790
per month plus $10 per frame....
asked 16 minutes ago -
Introduction
Information design is a field that studies the way information
should be displayed, which is...
asked 13 minutes ago -
1.The main product of the reaction between p-cresol and Br2 /
FeBr3 is:
3-Bromo-4-methyl phenol
2-Bromo-4-methyl...
asked 18 minutes ago -
At present, concentration
of 92235U in naturally
occurring uranium deposits is approximately 0.74 %. What will the...
asked 20 minutes ago -
Question 1:
For the following reaction, 8.72 grams of nitrogen gas are
allowed to react with...
asked 23 minutes ago -
Discuss the benefits and detriments of hard water, and your
opinion on using water softeners.
asked 59 minutes ago -
For a Friedel-Crafts alkylation reaction between
1,4-dimethoxybenzene with 3-methyl-2-butanol and sulfuric acid what
product was formed...
asked 39 minutes ago -
This programming assignment needs to be written so that it can
do infix expression to postfix...
asked 45 minutes ago -
Below are the reduction half reactions for chemolithoautotrophic
denitrification, where hydrogen is a source of electrons...
asked 45 minutes ago -
On January 2, 2020, the Retail Auto Parts Company received a
notice from its primary supplier...
asked 54 minutes ago