Homework Answers
Add Answer to:
2. A 6 in thick concrete wall, having thermal conductivity of 0.8Btu/h.ft.°F, is exposed to air...
A 0.1 m thick brick wall with thermal conductivity 0.66 Wm K-1 is exposed to cold wind on the out...
A 0.1 m thick brick wall with thermal conductivity 0.66 Wm K-1 is exposed to cold wind on the outside of a house, at 270 K with convective heat transfer coefficient of 22.43 Wm2K1. On the inside of the house is calm air at 295.8 K, with a natural convective heat transfer coefficient of 10.49 Calculate the rate of heat transfer per unit area, in Wm, giving your answer to 3 decimal places
A 0.1 m thick brick wall with...
2.) A plane wall is made of brick with a thermal conductivity of 1.5 W/(m-K). The...
2.) A plane wall is made of brick with a thermal conductivity of 1.5 W/(m-K). The wall is 20 cm thick and has a surface area of 10 m2. One side of the wall is exposed to outside air blowing against the wall resulting in a heat transfer coefficient of 20 W/(m2-K). The other side is exposed to an air-conditioned room with a convective heat transfer coefficient of 5 W/(m2-K). a. What are the thermal resistances corresponding to conduction through...
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...
The thermal conductivity of concrete is 0.80W/(m ·K), and the thermal conductivity of a certain wood...
The thermal conductivity of concrete is 0.80W/(m ·K), and the thermal conductivity of a certain wood is 0.10W/(m · K). How thick would a solid concrete wall have to be to have the same rate of heat flow as an 8.0-cm-thick solid wall of this wood? Both walls have the same surface area and the same interior and exterior temperatures
A concrete wall of a house is 45 cm thick and has a surface area 20m...
A concrete wall of a house is 45 cm thick and has a surface area 20m x 5 m. The inside temperature of the wall is 47 °C and the outside air temperature is 14 °C. Thermal conductivity of the concrete wall is 0.8 W/mK. Calculate the heat transfer rate through the wall by conduction and its thermal resistance.
A mild steel plate that is 1.4 in. thick and cross section 2 ft. x 2...
A mild steel plate that is 1.4 in. thick and cross section 2 ft. x 2 ft. is placed horizontally in the sun. The top surface of the plate is exposed to air at 90°F and the lower surface of the plate is exposed to air with a convective heat transfer coefficient of 3 Btu/h ftF. If the incident solar radiation on the plate is about 400 Btu/h, and the convective heat-transfer coefficient between the top surface and the surrounding...
A plane wall with thermal conductivity of k, is insulated on one side and is exposed...
A plane wall with thermal conductivity of k, is insulated on one side and is exposed to ambient air at To and convection coefficient of h, on the other side. A heat source in the 3) wall is generating a uniform heat rate per unit volume of For one-dimensional steady-state conduction in the wall, derive a proper differential equation for the temperature by either using the heat equations or doing the energy balance. Identify proper boundary conditions and find the...
Heat Transfer -A wall 20 cm thick is to be constructed from material that has an...
Heat Transfer
-A wall 20 cm thick is to be constructed from material that has an average thermal conductivity of 2 W/m C. The wall is to be insulated with 5cm material having an average thermal conductivity of 0.5W/m C. Assuming that the inner and outer surface temperatures of the insulated wall are 200 and 20°C, calculate the heat transfer per unit area and the intermediate Temperature between the insulation and the wall.
2. A3 inch thick Fireclay brick plane wall is well insulated on its left side. The...
2. A3 inch thick Fireclay brick plane wall is well insulated on its left side. The wall is initially at a uniform temperature of 80°F. The right side of the wall is suddenly exposed to combustion gasses at a temperature of 2000°F with a convective heat transfer coefficient of 10 BTU/hrft?R. Determine: a. The time required for the centerline temperature of the wall to reach a temperature of 1200°F. The minimum temperature in the wall at this time. C. 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...
A 0.1 m thick brick wall with thermal conductivity 0.66 Wm K-1 is exposed to cold wind on the outside of a house, at 270 K with convective heat transfer coefficient of 22.43 Wm2K1. On the inside of the house is calm air at 295.8 K, with a natural convective heat transfer coefficient of 10.49 Calculate the rate of heat transfer per unit area, in Wm, giving your answer to 3 decimal places
A 0.1 m thick brick wall with...
2.) A plane wall is made of brick with a thermal conductivity of 1.5 W/(m-K). The wall is 20 cm thick and has a surface area of 10 m2. One side of the wall is exposed to outside air blowing against the wall resulting in a heat transfer coefficient of 20 W/(m2-K). The other side is exposed to an air-conditioned room with a convective heat transfer coefficient of 5 W/(m2-K). a. What are the thermal resistances corresponding to conduction through...
A concrete wall of a house is 45 cm thick and has a surface area 20m x 5 m. The inside temperature of the wall is 47 °C and the outside air temperature is 14 °C. Thermal conductivity of the concrete wall is 0.8 W/mK. Calculate the heat transfer rate through the wall by conduction and its thermal resistance.
A mild steel plate that is 1.4 in. thick and cross section 2 ft. x 2 ft. is placed horizontally in the sun. The top surface of the plate is exposed to air at 90°F and the lower surface of the plate is exposed to air with a convective heat transfer coefficient of 3 Btu/h ftF. If the incident solar radiation on the plate is about 400 Btu/h, and the convective heat-transfer coefficient between the top surface and the surrounding...
A plane wall with thermal conductivity of k, is insulated on one side and is exposed to ambient air at To and convection coefficient of h, on the other side. A heat source in the 3) wall is generating a uniform heat rate per unit volume of For one-dimensional steady-state conduction in the wall, derive a proper differential equation for the temperature by either using the heat equations or doing the energy balance. Identify proper boundary conditions and find the...
Heat Transfer
-A wall 20 cm thick is to be constructed from material that has an average thermal conductivity of 2 W/m C. The wall is to be insulated with 5cm material having an average thermal conductivity of 0.5W/m C. Assuming that the inner and outer surface temperatures of the insulated wall are 200 and 20°C, calculate the heat transfer per unit area and the intermediate Temperature between the insulation and the wall.
2. A3 inch thick Fireclay brick plane wall is well insulated on its left side. The wall is initially at a uniform temperature of 80°F. The right side of the wall is suddenly exposed to combustion gasses at a temperature of 2000°F with a convective heat transfer coefficient of 10 BTU/hrft?R. Determine: a. The time required for the centerline temperature of the wall to reach a temperature of 1200°F. The minimum temperature in the wall at this time. C. The...
Most questions answered within 3 hours.
-
Create a bottom-up solution to
the minimum
falling path sum problem. By bottom-up, I mean you should not
use...
asked 29 minutes ago -
According to an airline, flights on a certain route are on time
85% of the time....
asked 1 minute ago -
Please answer broadly of the following 2 question:
Question 1: One
thousand lots of product, each...
asked 3 minutes ago -
Illustrate the operation of randomized
quicksort on the array: A = (19, 2, 11, 14, 7,...
asked 3 minutes ago -
In the real world:
A) price discrimination has only been observed where monopolies
are present
B)...
asked 5 minutes ago -
C++ program c that reads a list of costs for a few items.
Program should calculate...
asked 12 minutes ago -
For a given population, the percentage of full-time employees
that participate in a retirement plan is...
asked 8 minutes ago -
You are a manager with a company where employees frequently
travel as part of their job....
asked 18 minutes ago -
Stock A and Stock B produced the following returns during the
past five years (Year -1...
asked 9 minutes ago -
In this assignment you will implement software for your local
library. The user of the software...
asked 28 minutes ago -
A manufacturer of banana chips would like to know whether its
bag filling machine works correctly...
asked 22 minutes ago -
Weight gain during pregnancy. In 2004, the
state of North Carolina released to the public a...
asked 25 minutes ago