Homework Answers
Add Answer to:
Flat-plate solar collectors have been installed on the roof of a residential building. The collectors, each...
The roof of a minivan can be approximated as a flat plate, 2-m wide and 3.5-...
The roof of a minivan can be approximated as a flat plate, 2-m wide and 3.5- m long. The sun beats down on the roof such that the net solar radiation absorbed is 350 W/m2. If the ambient air is 32 ºC, the car is moving at 100 km/hr, and the inside surface of the roof is heavily insulated, determine the steady-state temperature of the roof (in ºC). Ignore heat loss via radiation emitted from the roof to the surrounding.
The roof of a minivan can be approximated as a flat plate, 2-m wide and 3.5-m...
The roof of a minivan can be approximated as a flat plate, 2-m wide and 3.5-m long. The sun beats down on the roof such that the net solar radiation absorbed is 350 W/m2. If the ambient air is 32 °C. the car is moving at 100 km/hr, and the inside surface of the roof is heavily insulated, determine the steady-state temperature of the roof (in °C). Ignore radiation emitted from the roof. T32°C T 350w Assuming T, *45oC. Tlm-32+45)/2...
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?
Describe the structure and principle of operation of flat plate and evacuated tube solar collectors (both water heatin...
Describe the structure and principle of operation of flat plate and evacuated tube solar collectors (both water heating and air heating) Determine key performance parameters for a flat plate collector from collector test results C Describe the structure and principle of operation of the key storage elements of low temperature solar thermal systems -namely hot water storage tanks and rock beds C o Define and use the various angles used to specify solar position and the angle of incidence of...
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 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...
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 flat plate test section, designed for a boundary-layer measurement experiment, is 0.5 m wide an...
A flat plate test section, designed for a boundary-layer
measurement experiment, is 0.5 m wide and has an electrically
heated surface installed 0.5 m away from the leading edge (see
figure below). The electrically heated strip is 10 cm long and 5mm
deep. It is insulated at its bottom surface as well as both
wide-end edges. If the surface of this electrical heater strip is
to be maintained at a uniform temperature of 120°C when the
atmospheric pressure air at...
Air at a temperature of 300 K flows over one side of a flat plate of...
Air at a temperature of 300 K flows over one side of a flat plate of width 1 m at a velocity of 20 m/s. The plate has a constant surface temperature of 350 K. Assume Re(x,c)=5x10^5. a) What is the velocity boundary layer thickness at the end of the plate if L=0.25 m? What if L=1 m? b) Calculate the drag on the plate if L=0.25 m. What is the drag if L=1 m? c) Find the heat transfer...
PRINTER VERSION BACK NEXT RCES Supplemental Problem 7.001 A flat plate of width 1 m is...
PRINTER VERSION BACK NEXT RCES Supplemental Problem 7.001 A flat plate of width 1 m is maintained at a uniform surface temperature of T,-160°C by using independently controlled, heat-generating rectangular modules of thickness a 10 mm and length b 50 mm. Each module is insulated from its neighbors, as well as on its back side. Atmospheric air at 25°C flows over the plate at a velocity of 30 m/s. The thermophysical properties of the module are k5.2 W/m K, cp...
The roof of a minivan can be approximated as a flat plate, 2-m wide and 3.5-m long. The sun beats down on the roof such that the net solar radiation absorbed is 350 W/m2. If the ambient air is 32 °C. the car is moving at 100 km/hr, and the inside surface of the roof is heavily insulated, determine the steady-state temperature of the roof (in °C). Ignore radiation emitted from the roof. T32°C T 350w Assuming T, *45oC. Tlm-32+45)/2...
Describe the structure and principle of operation of flat plate and evacuated tube solar collectors (both water heating and air heating) Determine key performance parameters for a flat plate collector from collector test results C Describe the structure and principle of operation of the key storage elements of low temperature solar thermal systems -namely hot water storage tanks and rock beds C o Define and use the various angles used to specify solar position and the angle of incidence of...
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...
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 flat plate test section, designed for a boundary-layer
measurement experiment, is 0.5 m wide and has an electrically
heated surface installed 0.5 m away from the leading edge (see
figure below). The electrically heated strip is 10 cm long and 5mm
deep. It is insulated at its bottom surface as well as both
wide-end edges. If the surface of this electrical heater strip is
to be maintained at a uniform temperature of 120°C when the
atmospheric pressure air at...
PRINTER VERSION BACK NEXT RCES Supplemental Problem 7.001 A flat plate of width 1 m is maintained at a uniform surface temperature of T,-160°C by using independently controlled, heat-generating rectangular modules of thickness a 10 mm and length b 50 mm. Each module is insulated from its neighbors, as well as on its back side. Atmospheric air at 25°C flows over the plate at a velocity of 30 m/s. The thermophysical properties of the module are k5.2 W/m K, cp...
Most questions answered within 3 hours.
-
Which of the following is correct?
A. APC + MPS = 1
B. APS + MPS...
asked 12 seconds ago -
Given a regression sum of squares equal to 2373.59 and a total
sum of squares equal...
asked 1 hour ago -
Compare and contrast the linear motion and angular motion
equations F ma and . That is,...
asked 46 minutes ago -
Now that this course has taken you on a journey of introduction
to the world of...
asked 1 hour ago -
The sandwich maker of the EE-Cole-Eye Sandwich Truck was just
fired (for a reason described below)...
asked 3 hours ago -
Name the following coordination compounds using systematic
nomenclature.
1. [Co(H2O)6]Cl2:
2. [Cr(NH3)6](NO3)3:
3. K4[Fe(CN)6]:
4. Na[Au(CN)4]:...
asked 3 hours ago -
Propose an efficient synthesis of 2-Bromo-5-nitrotoluene from
benzene. Hint: 3 steps. Consider directing effects of substituents....
asked 5 hours ago -
This assignment will explore the impact of corporate decisions
on a local versus a global perspective....
asked 4 hours ago -
Given the function below, F(w,x,y,z)= x’z+w’z’+w’y
a) draw a logic diagram for an implementation which uses...
asked 4 hours ago -
Most political philosophers believe we have a duty to obey laws,
even if the laws in...
asked 5 hours ago -
Which of the following are common negotiation outcome
mistakes?
a. Leave money on the table b....
asked 5 hours ago -
Convert the following quantities:
a) 0.819 atm to torr b) 512 mmHg to bar c) 11.2...
asked 5 hours ago