4) A horizontal pipe 6 m long and 12.5 cm in diameter is maintained at a temperature of 150-C in a large room where the air is 20-C and 1 atm. The walls of the room are at 38°C. Assume that €=0.7 for the pipe. How much heat is lost by the pipe through both convection and radiation? 1:44 PM

4) A horizontal pipe 6 m long and 12.5 cm in diameter is maintained at a temperature of 150-C in a large room where the air is 20-C and 1 atm. The walls of the room are at 38°C. Assume that €=0.7 for the pipe. How much heat is lost by the pipe through both convection and radiation? 1:44 PM

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

The bottom of a 50mm diameter, 2mm thick metallic induction heater is 120C while its thermal conductivity is 60 W/m-C. The voltage and current flowing into the heater are 220V and 5A, respectively. Find the temperature at the top portion of the pan. Sketch diagram and show pertinent solutions. Box your final answer and express numerical values in 2 decimal places
would really appreciate your help thank you
Calculate the heat transfer of 2.4 kg of water to vapor
Your research lab is testing the thermal conductivity of a new polymer before implementing in manufacture. A 3-inch-thick slab of the new polymer initially at 65 °F is placed inside an incubator oven at 375 °F. The density of the material is 63.7 lbm/ft3 and the thermal conductivity is 0.053 Btu/hr-ft-°F and the specific heat is 0.37 Btu/lbm°F. Determine the temperature at the center of the slab at 30 min, 60 min and 90 min
Hello, I am a mechanical engineering student and want to upload this question as I have an exam in early June about thermodynamics. I have been given a question that will help me answer my exams in June. Please could you answer showing step by step guidance on how to answer this question with the formula clearly shown. Thank you very much
ösly äbä With rise in temperature , the conductivity of the metals depending on temperature remains constant decreases Increases نقطة واحدة When heat is transferred from hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by conduction and convection radiation conduction convection نقطة واحدة Thermal diffusivity of a : substance is
GChoose the right answer 1. The temperature profile for steady hest conduction through a plane wall of constant thermal conductivity is a. logarithmic b. parabolic 2. A brick wall (k-0.75 W/mK ) transmits $02 of heat loss through another wall (k-0.25 W/mK, x-100 mm). If the temperature difference across both walls is the same, the thickness of the brick wall would be a.150 mm c. linear 6T b. 240 mm c. 300 mm d. 375 mm 3. The maximum temperature at the center of the solid sphere of radius R having heat generation q (W/m') is given by g'R +9R b. T, + 4k T+9R 6k d. T+9R 8k a. 2k C. 4. The internal thermal resistance of a solid can be ignored if the Biot number is less than a. 1 b. 0.5 c. 0.1 d. Fourier number 5. The ratio of heat transfer of a fin to the heat transfer without fin is referred to as a. fin resistance b. fin efficieney efin effectiveness d. fin conductance.
Newton 's law of cooling describes the temperature T of a body cooling down to the surrounding temperature To. T and To are related through equation dT/dT =-k(T-To), where>0. Formulate an expression for T in terms of k and To
9.5 m 9.5 m The two configurations above both have a wall thickness of 550 mm, and a length of 20 m. Which of the two configurations above should a company use if it plans on using a fire clay brick refractory with k = 1.74 W/m. °C? Explain your choice. 9.5 m
i need the answer quickly
It is designed in such a way that the internal temperature of a commercial heat treatment furnace can reach up to 165 oC. All surfaces of the furnace consist of firebrick (10 cm), insulation material and sheet metal (3mm) from the inside out. Given that the outdoor temperature is 22 oC, the outer sheet will be allowed to go up to 35 oC, which is a temperature that will not disturb in contact with hands. In this case, determine the insulation material thickness to be used. The thermal conductivity coefficient of the insulation material is insulation 0.066 W / m oC, 60 W / m oC for sheet metal and 115 W / m oC for firebrick. Indoor heat transfer coefficient will be accepted as 25 W / m2 oC and 12 W / m2 oC for outdoor environment.
Temperature differences for Thermal efficiencies do not have to be converted to absolute temperature. true or false?