A wall made of wood is 4.00 cm thick and has an area of 48.0 m² if the temperature inside is 25 °C and the temperature on the outs is 14 °C, then at what rate is thermal energy transported through the wall by conduction? The thermal conductivity of wood is 0.080 Jsm¹(c)¹ -1 'n Muur is gemaak van hout wat 4.00 cm dik is en met 'n oppervlakte van 48.0 m². Wat is die tempo van energie oordrag as gevolg var neleiding deur die muur indien die binne temperatuur is 25 °C en die buite temperatuur 14 °C is?

A wall made of wood is 4.00 cm thick and has an area of 48.0 m² if the temperature inside is 25 °C and the temperature on the outs is 14 °C, then at what rate is thermal energy transported through the wall by conduction? The thermal conductivity of wood is 0.080 Jsm¹(c)¹ -1 'n Muur is gemaak van hout wat 4.00 cm dik is en met 'n oppervlakte van 48.0 m². Wat is die tempo van energie oordrag as gevolg var neleiding deur die muur indien die binne temperatuur is 25 °C en die buite temperatuur 14 °C is?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.62P

See similar textbooks

Similar questions

The thermal conductivity of fibreglass insulation at 67F is 0.02 Btu/h ft F. What is its value in SI units?
1.77 Explain each in your own words. (a) What is the mode of heat transfer through a large steel plate that has its surfaces at specified temperatures? (b) What are the modes when the temperature on one surface of the steel plate is not specified, but the surface is exposed to a fluid at a specified temperature?
The total consumption of electrical energy in the United States is about 1.0 1019joules per year.What is the average rate of electrical energy consumption in watts?If the population of the United States is 300 million, what is the average rate of electrical energy consumption per person?The sun transfers energy to the earth by radiation at a rate of approximately 1.0 kW per square meter of surface. If this energy could be collected and converted to electrical energy with 40 % efficiency, how great an area (in square kilometers) would be required to collect the electrical energy used by the United States?
The inner and outer surface temperature of a 5.1 mm thick glass window are 17.6 and 7.1 oC, respectively. What is the heat loss in W through a window that is 1 m by 3 m on a side? The thermal conductivity of glass is 1.4 W/mK. Please keep one decimal and take positive value for the final answer.
The compartment below is used as a freezer of refrigerator compartment. Inner wall is at -10 C and outer wall is at 20 C. Insulator with a thermal conductivity of 0.040 W/(mK) is used to prevent the heat losses from the compartment. The shape is in square form with a side of 1.3 m and unit width into the page. Determine the amount of the heat load if the thickness of the insulator is 2 cm? * a)700 W b)312 W c)78 W d)none e)500 W
A spherical furnace has an inside diameter of 6 ft and an outside diameter of 8 ft. The furnace shell is made of two different materials, each 6 inches thick. The inner and outer section of the shell has a thermal conductivity of 0.10 (BTU/hr-ft?)(°F/ft) and 0.2 (BTU/hr-ft2)(°F/ft), respectively. The inside temperature is 2,500°F, while the outside surface is at 150°F. Calculate the heat loss for 24 hours of operation. Express your answer in scientific notation.
1.29. Determine the thermal conductivity of carbon monoxide gas at 1 atm pressure and 93.7 °C. Ans 0.0299 W/m-K 1 10
Max likes to drink tea. He uses his kettle to heat 1.6 liters of water from 18°C to 100°C every day. What does it cost him to heat the water per year (365 days) if he pays 29 cents per kWh of electricity. State the costs in euros to two decimal places. The material values of water averaged for the swept temperature range are: Cwater=4.18 kJ/(kg-K); pwater=983 kg/m3; Awater=0.654 W/(m2. K); nwater=467-10-6 kg/(m-s).
The interior-wall temperature of an annealing oven constructed of firebrick (Missouri) is2552°F, and the exterior-wall temperature is 392°F. If the heat loss is 3600 Btu/(hr)(sq ft),determine the thickness of the wall, in inches. (answer 5.67”)
1.28 Determine the thermal conductivity of steam at 700 K and 1.327 x 10' N/m?. Ans 0.0505 W/m K (klk, = 1.0) 1.29 Delermine the
Determine the resistance of an aluminium coil of 183 cm as diameter consists of 14500 turns and the mean length per turn is 4883 cm. Take the electrical conductivity of the aluminium coil as 0.37 MS/m. Solution: Area of Cross-section of the Coil (in m²) Total Length (in m) The Resistance of the Coil (in 2) o search
Determine the natural frequencies of the following 2 DOF vibrating system: given m, =m, =m m2 m2 EI EI m, El El K = 24EI/h