Question

In: Physics

A thermopane window consists of two glass panes, each 0.50 cm thick, with a 1.0 cm...

A thermopane window consists of two glass panes, each 0.50 cm thick, with a 1.0 cm thick sealed layer of air in between

a) if the inside surface temperature is 22.2 c and the outside surface temperature is 0.0 c determine the rate fo energy transfer through 1.35 m^2 of the window

_______W

b) compare your answer to a) with the rate of energy transfer through 1.35 m^2 of a single 1.0 cm thick pane fo glass. Disregard surface air layers( find the rate of energy transfer)

_____kW

Solutions

Expert Solution

We know the rate of transfer of heat through material is given by


Related Solutions

A thermopane window consists of two pieces of glass each 0.1" thick separated by a layer...
A thermopane window consists of two pieces of glass each 0.1" thick separated by a layer of dry, stagnant air .4" thick. • Find the resistance of a 4 ft × 3 ft thermopane window. • Suppose the window is made by fastening an aluminum border .1" thick all around the edge. Find the total resistance for this configuration. • As an alternative to the aluminum, we might use a border of .75" thick white pine. Find the total resistance...
A double pane window consists of two pieces of glass each of 8 mm thick that...
A double pane window consists of two pieces of glass each of 8 mm thick that enclose an air space of 8 mm thick. The window separates room air at 18°C from outside ambient air at -8°C. The convection coefficient associated with the inner (room-side) surface is 12W/m2 .K. The thermal conductivity of the glass is kg=1.35 W/m. K and that of the air is ka=0.027 W/m. K Q1- If the outside air convection coefficient is ho = 76 W/m2...
A double pane window consists of two pieces of glass each of 8 mm thick that...
A double pane window consists of two pieces of glass each of 8 mm thick that enclose an air space of 8 mm thick. The window separates room air at 18°C from outside ambient air at -8°C. The convection coefficient associated with the inner (room-side) surface is 12W/m2 .K. The thermal conductivity of the glass is kg=1.35 W/m. K and that of the air is ka=0.027 W/m. K Q1- If the outside air convection coefficient is ho = 76 W/m2...
A laser beam enters a 19.0 cm thick glass window at an angle of 39.0° from...
A laser beam enters a 19.0 cm thick glass window at an angle of 39.0° from the normal. The index of refraction of the glass is 1.50. At what angle from the normal does the beam travel through the glass? Tries 0/20 How long does it take the beam to pass through the plate?
The variation of the spectral transmissivity of a 0.6cm thick glass window is 0.92 in the...
The variation of the spectral transmissivity of a 0.6cm thick glass window is 0.92 in the wavelength range from 0.3-3micrometer. Determine the average transmissvity of this window for solar radiation at T=5800K. Also, determine the amount of solar radiation transmitted through the window for incident solar radiation of 650W/m2.
A 5.3-cm-thick layer of oil (n=1.46) is sandwiched between a 1.1-cm-thick sheet of glass and a...
A 5.3-cm-thick layer of oil (n=1.46) is sandwiched between a 1.1-cm-thick sheet of glass and a 2.0-cm-thick sheet of polystyrene plastic (n=1.59). How long (in ns) does it take light incident perpendicular to the glass to pass through this 8.4-cm-thick sandwich? A 2.0-cm-wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 570 nm . What are the angles of the first two diffraction orders?
The inner and outer surface temperatures of a glass window 5 mm thick are 15 and...
The inner and outer surface temperatures of a glass window 5 mm thick are 15 and 5°C. The thermal resist- ance of the glass window due to conduction is Rt,cond = 1.19 × 10−3 K/W. What is the rate of heat loss through a 1 m × 3 m window? What is the thermal conductivity of the glass?
a. Laser light comes in to a rectangular block of thick (12 cm) glass with an...
a. Laser light comes in to a rectangular block of thick (12 cm) glass with an incident angle (relative to normal) of 25 degrees. What angle does the light have inside and as it leaves the block, and by what distance (in cm) does it seem displaced compared to where the laser beam would be with not glass ? b If instead of laser light you were viewing an object or bug on the other side of the block, how...
Consider a single pane glass window that has an area of 8ft^2 and is 3/16” thick....
Consider a single pane glass window that has an area of 8ft^2 and is 3/16” thick. The outside temperature is -10oC and the inside temperature is 21oC. [9] a.How much heat flows through the window in 8 hours? Use an R-value. b. In reality, all surfaces have a thin layer of air covering them that does not move. This air“film” is about .0005m thick. Calculate how much heat flows through the window in the 8 hour period with the addition...
Two 15-cm-diameter metal disks separated by a 0.69-mm-thick piece of Pyrex glass are charged to a...
Two 15-cm-diameter metal disks separated by a 0.69-mm-thick piece of Pyrex glass are charged to a potential difference of 1100 V . What is the surface charge density on the disks? What is the surface charge density on the glass?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT