Homework Answers
The relative humidity inside the room should not increase more than 65% as after this condensation will start on glass surface...
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(5-9) A room has single glass window of PVC frame. The wind speed is 25 km/h....
4.- The temperature inside a room is 25°C. There is a single glass window of 1...
4.- The temperature inside a room is 25°C. There is a single glass window of 1 m. Outsid temperature is 4°C. The convective coefficient outside the room is 20 W/m-K, and inside the is 10 W/mK. In order to reduce a 90% the heat flux, it is possible to install a new window with double gli an air chamber between the glasses. Evaluate the thickness of the air chamber between glasses The thickness of the glasses is 2 cm Thermal...
please answer all parts 1- (5 ) Consider a glass window (1mx1m) with a thickness of...
please answer all parts
1- (5 ) Consider a glass window (1mx1m) with a thickness of 10 mm, thermal conductivity k = 1.4 W/m . °C, and emissivity 1. The room and the walls that face the window are maintained at 20°C, and the outside air temperature is 10 °C and the outside surrounding temperature is 5 °C, with no winds. Following is a solution for a similar problem but conditions are different; understand this solution before your solve the...
During a big storm a 60 km/h wind blows across the surface of a 2.00 m...
During a big storm a 60 km/h wind blows across the surface of a 2.00 m times 1.00 m window. What is the force on the window associated with this wind? The density of the air is 1.20 kg/m^3. A) 333 N pointed toward the inside the house. B) 333 N pointed toward the outside of the house. C) 3000 N pointed toward the inside of the house. D) 3000 N pointed toward the outside of the house F) 0...
Consider an ocean-facing room in a high-rise building (L/W of 1). The ocean-facing wall (with window) is...
Consider an ocean-facing room in a high-rise building (L/W of 1). The ocean-facing wall (with window) is 10m by 4 m, contains two windows (3m by 1m, each). Assume the room is located 30 m above the neutral pressure level and the inside air temperature is maintained at 24°C with RH of 50%. Outside air is of 35°C with RH of 60%. Assume the convective heat transfer coefficients on inner side and outer side of the wall and window are 0.5 and...
An airplane has a speed of 265 km/h relative to the air. There is a wind...
An airplane has a speed of 265 km/h relative to the air. There is a wind blowing at 75 km/h at 30° north of east relative to Earth. In which direction should the plane head to land at an airport due north of its present location? ° west of north What is the plane's speed relative to the ground?
5) A certain automobile has a 4 mm thick glass window with a surface area of...
5) A certain automobile has a 4 mm thick glass window with a surface area of 2.8 m². The outside temperature is 32°C while the passenger compartment is maintained at 22°C. The convection heat transfer coefficient on the exterior window surface is h = 90 W/(m²K). Determine the heat gain through the windows when the interior convection heat transfer coefficient is h = 15 W/(m²K). By controlling the air flow in the passenger compartment the interior heat transfer coefficient can...
Wind Chill 50 45 40 35 30 Wind Speed (km/h) 25 20 15 10 5 0...
Wind Chill 50 45 40 35 30 Wind Speed (km/h) 25 20 15 10 5 0 in -10 -15 -20 35 40 -45 -50 Air Temperature (°C) Task: The wind chill index measures the sensation of cold on the human skin. In October 2001, Environment Canada introduced the wind chill index above. Each curve represents the combination of air temperature and wind speed that would produce the given wind chill value. For example, a temperature of -25°C and wind speed...
Estimate the air pressure inside a category 5 hurricane, where the wind speed is 320 km/h...
Estimate the air pressure inside a category 5 hurricane, where the wind speed is 320 km/h (Figure 1
A rectangular glass window pane on a house has a width of 1.1 m, a height...
A rectangular glass window pane on a house has a width of 1.1 m, a height of 2.2 m, and a thickness of 0.65 cm. Find the energy transferred through the window by conduction in 12 hours on a day when the inside temperature of the house is 22°C and the outside temperature is 2.0°C. Take surface air layers into consideration. (Use 0.8 J/s · m · °C for the thermal conductivity of glass and 0.17 ft2 · °F ·...
PLEASE ANSWER PART B (part a is there for reference) For each of the conditions given...
PLEASE ANSWER PART B (part a is there for reference) For each of the conditions given below find the outdoor temperature that gives you condensation on the inside window surface. Part (a) is the reference case by which all of the other cases can be compared. In each case, the indoor temperature and humidity is fixed at 70°F and 50% respectively, which as you know from a chart gives you a dew point temperature of about 51°F. . a. Inside...
4.- The temperature inside a room is 25°C. There is a single glass window of 1 m. Outsid temperature is 4°C. The convective coefficient outside the room is 20 W/m-K, and inside the is 10 W/mK. In order to reduce a 90% the heat flux, it is possible to install a new window with double gli an air chamber between the glasses. Evaluate the thickness of the air chamber between glasses The thickness of the glasses is 2 cm Thermal...
please answer all parts
1- (5 ) Consider a glass window (1mx1m) with a thickness of 10 mm, thermal conductivity k = 1.4 W/m . °C, and emissivity 1. The room and the walls that face the window are maintained at 20°C, and the outside air temperature is 10 °C and the outside surrounding temperature is 5 °C, with no winds. Following is a solution for a similar problem but conditions are different; understand this solution before your solve the...
During a big storm a 60 km/h wind blows across the surface of a 2.00 m times 1.00 m window. What is the force on the window associated with this wind? The density of the air is 1.20 kg/m^3. A) 333 N pointed toward the inside the house. B) 333 N pointed toward the outside of the house. C) 3000 N pointed toward the inside of the house. D) 3000 N pointed toward the outside of the house F) 0...
5) A certain automobile has a 4 mm thick glass window with a surface area of 2.8 m². The outside temperature is 32°C while the passenger compartment is maintained at 22°C. The convection heat transfer coefficient on the exterior window surface is h = 90 W/(m²K). Determine the heat gain through the windows when the interior convection heat transfer coefficient is h = 15 W/(m²K). By controlling the air flow in the passenger compartment the interior heat transfer coefficient can...
Wind Chill 50 45 40 35 30 Wind Speed (km/h) 25 20 15 10 5 0 in -10 -15 -20 35 40 -45 -50 Air Temperature (°C) Task: The wind chill index measures the sensation of cold on the human skin. In October 2001, Environment Canada introduced the wind chill index above. Each curve represents the combination of air temperature and wind speed that would produce the given wind chill value. For example, a temperature of -25°C and wind speed...
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