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Quiz #5 [20 Points] Chapter 3 Electric Analogy - Thermal Resistance Network Consider a 0.8-m high...
(25pts) Consider a 1.2-m-high and 2-m-wide glass window whose thickness is 6 mm and thermal conductivity...
(25pts) Consider a 1.2-m-high and 2-m-wide glass window whose thickness is 6 mm and thermal conductivity is k 0.78 W/m °C. Determine the steady rate of heat transfer through this glass window and the temperature of its inner surface for a day during which the room is maintained at 24°C while the temperature of the outdoors is-5°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h 10 W/m2 °C and h...
Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k =...
Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78 W/m K) separated by a 12-mm-wide stagnant air space (k = 0.026 W/m K). Determine the steady rate of heat transfer through this double-pane window. R . and all the surface temperatures (inner and outer of each pane) within the circuit (which you will draw and correctly label) for a day during which the room is maintained at 24°C while the temperature of...
1. Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm a W/m C) separated...
1. Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm a W/m C) separated by a 12-mm-wide stagnant air space thick layers of glass ( 0.78 (0.026 W/m C). Determine the steady rate of heat transfer through this double- pane window and the temperature of its inner surface for a day during which the room is maintained at 24 C while the temperature of the outdoors is 5 C. Take the convection heat transfer coefficients on the inner...
Thermal Resistance Analysis: Consider a 1.2 m high and 1.4 m wide double-pane window consisting o...
Thermal Resistance Analysis: Consider a 1.2 m high and 1.4 m wide double-pane window consisting of two 4 mm thick layers ofglass (k-0.85 W m-K) separated by a 8-min stagnant air space. (k= 0.025 W m-K) Determine the steady rate of heat transfer through this double-pane window and the temperature of its inner and outer surfaces on a day when the inside room temperature is maintained at 20 °C and the outside ambient temperature is 32 °C. Assume the convection...
QUESTION 7 Consider a (1.25, 1.0, 1.3, 0.90)-m-high and (2.0, 2.1, 2.2, 2.3)-m-wide double-pane window (see...
QUESTION 7 Consider a (1.25, 1.0, 1.3, 0.90)-m-high and (2.0, 2.1, 2.2, 2.3)-m-wide double-pane window (see Figure below) consisting of two 3-mm-thick layers of glass (k = 0.79 W/m.°c) separated by a 12-mm-wide stagnant air space (k = 0.028 W/m-°C). The room is maintained at (20, 21, 22, 23, 24) °C while the temperature of the outdoors is (5, 6, 7, 8)°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h1...
Considera (1.25, 1.0, 1.3, 0.90).m-high and (2.0, 2.1, 2.2, 2.3).m-wide double-pane window (see Figure below) consisting...
Considera (1.25, 1.0, 1.3, 0.90).m-high and (2.0, 2.1, 2.2, 2.3).m-wide double-pane window (see Figure below) consisting of two 3-mm-thick layers of glass (k = 0.79 W/m°c) separated by a 12-mm-wide stagnant air space (k -0.028 W/m.°c). The room is maintained at (20, 21, 22, 23, 24) ºc while the temperature of the outdoors is (5, 6, 7, 8)°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h1 = 11 W/m2.0c and...
Consider a 4 m high, 6 m wide and 0.17 m thick wall whose thermal conductivity is k = 0.8 W/m.oC....
Consider a 4 m high, 6 m wide and 0.17 m thick wall whose thermal conductivity is k = 0.8 W/m.oC. On a certain day, the temperatures of the inner and the outer medium close to the wall are measured to be 14oC and 6oC, respectively. Both inner and outer surfaces are subjected to convection heat transfer. Assume that the convection heat transfer coefficient is the same for the two surfaces h = 5 W/m2 ∙ °C. 1. Draw the...
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...
18. A cylinder of radius r and made of a material of thermal conductivity kiis surrounded...
18. A cylinder of radius r and made of a material of thermal conductivity kiis surrounded by a cylindrical shell of inner radius r and outer radius 2r. This outer shell is made of a material of thermal conductivity k2. The two ends of the combined system are maintained at two different temperatures. Under steady state conditions and no loss of heat across the cylindrical surface, the effective thermal conductivity of the arrangement would be: (a) k,+k2 (6) kk kitk,...
Consider a house that has a 10-m x 20-m base and a 4-m-high wall. All four...
Consider a house that has a 10-m x 20-m base and a 4-m-high wall. All four walls of the house have an R-value of 2.31m2°C/W. The two 10-m x 4-m walls have no windows. The third wall has five windows made of 0.5-cm-thick glass (k = 0.78 W/m-K), 1.2m x 1.8min size. The fourth wall has the same size and number of windows, but they are double paned with a 1.5-cm-thick stagnant air space (k = 0.026 W/m-K) enclosed between...
(25pts) Consider a 1.2-m-high and 2-m-wide glass window whose thickness is 6 mm and thermal conductivity is k 0.78 W/m °C. Determine the steady rate of heat transfer through this glass window and the temperature of its inner surface for a day during which the room is maintained at 24°C while the temperature of the outdoors is-5°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h 10 W/m2 °C and h...
Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78 W/m K) separated by a 12-mm-wide stagnant air space (k = 0.026 W/m K). Determine the steady rate of heat transfer through this double-pane window. R . and all the surface temperatures (inner and outer of each pane) within the circuit (which you will draw and correctly label) for a day during which the room is maintained at 24°C while the temperature of...
1. Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm a W/m C) separated by a 12-mm-wide stagnant air space thick layers of glass ( 0.78 (0.026 W/m C). Determine the steady rate of heat transfer through this double- pane window and the temperature of its inner surface for a day during which the room is maintained at 24 C while the temperature of the outdoors is 5 C. Take the convection heat transfer coefficients on the inner...
Thermal Resistance Analysis: Consider a 1.2 m high and 1.4 m wide double-pane window consisting of two 4 mm thick layers ofglass (k-0.85 W m-K) separated by a 8-min stagnant air space. (k= 0.025 W m-K) Determine the steady rate of heat transfer through this double-pane window and the temperature of its inner and outer surfaces on a day when the inside room temperature is maintained at 20 °C and the outside ambient temperature is 32 °C. Assume the convection...
QUESTION 7 Consider a (1.25, 1.0, 1.3, 0.90)-m-high and (2.0, 2.1, 2.2, 2.3)-m-wide double-pane window (see Figure below) consisting of two 3-mm-thick layers of glass (k = 0.79 W/m.°c) separated by a 12-mm-wide stagnant air space (k = 0.028 W/m-°C). The room is maintained at (20, 21, 22, 23, 24) °C while the temperature of the outdoors is (5, 6, 7, 8)°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h1...
Considera (1.25, 1.0, 1.3, 0.90).m-high and (2.0, 2.1, 2.2, 2.3).m-wide double-pane window (see Figure below) consisting of two 3-mm-thick layers of glass (k = 0.79 W/m°c) separated by a 12-mm-wide stagnant air space (k -0.028 W/m.°c). The room is maintained at (20, 21, 22, 23, 24) ºc while the temperature of the outdoors is (5, 6, 7, 8)°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h1 = 11 W/m2.0c and...
18. A cylinder of radius r and made of a material of thermal conductivity kiis surrounded by a cylindrical shell of inner radius r and outer radius 2r. This outer shell is made of a material of thermal conductivity k2. The two ends of the combined system are maintained at two different temperatures. Under steady state conditions and no loss of heat across the cylindrical surface, the effective thermal conductivity of the arrangement would be: (a) k,+k2 (6) kk kitk,...
Consider a house that has a 10-m x 20-m base and a 4-m-high wall. All four walls of the house have an R-value of 2.31m2°C/W. The two 10-m x 4-m walls have no windows. The third wall has five windows made of 0.5-cm-thick glass (k = 0.78 W/m-K), 1.2m x 1.8min size. The fourth wall has the same size and number of windows, but they are double paned with a 1.5-cm-thick stagnant air space (k = 0.026 W/m-K) enclosed between...
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