Heat Transfer Course
This is from a heat transfer course. 1- Hydrodynamic and thermally developing and developed regions (what does it mean? how does it happen? and what are implications on hydrodynamics and thermal characteristics of the flow?)
please answer my heat transfer problem thank you!! heat transfer problem for a furnace constructed with 0.7ft thick of fireclay brick having k=0.6 BTU/hr-ft-F and covered on the outer surface with a layer of insulating material of k=0.04BTU/hr-ft-F. The innermost surface is maintained at 1800 F while the outer surface of insulating material is maintained at 100 F, a. how thick must the insulator be to maintain a maximum allowable heat transfer rate of 300 BTU/hr-ft2 b. calculate the steady heat...
Question 8 Part A By what means is heat transferred by convection? transfer of heat by flowing electrons transfer of heat by electromagnetic radiation transfer of heat by transferring vibrational energy from one atom to its neighbors transfer of heat by motion of a fluid > Submit Request Answer Provide Feedback Pearson Copyright © 2020 Pearson Education Inc. All rights reserved. Terms of Use Privacy physics.com/myct/itemView?assignment ProblemiD. MacBook Air $ 3 5
the heat transfer The heat transfer to the system, in kJ/kg. for the reversible process 1-2-3 shown in the figure is closer TIKI 400 100 5 s (kl/kg.K) -400 200 o -300 100 00 300 0-200 400 Question 18
Operating in series are two reversible heat pumps. Heat transfer gives energy to the first cycle from a cold reservoir at 105 K and rejects energy by heat transfer to a reservoir at an intermediate temperature T greater than 105 K. The second cycle receives energy by heat transfer from the reservoir at T and rejects energy by heat transfer to a higher-temperature reservoir at 1200 K. If the heat pump cycles have the same co-efficient of performance, calculate: Low...
What Is the Shape/View factor? Why is it important for radiation heat transfer problems?How is it used in the radiation heat transfer equation?
please answer my heat transfer problem thank you!! heat transfer problem a furnace wall is constructed of firrebrick 6in thick. The temperature of the wall is 1300F, and the T outside of the wall is 175 F. If the mean thermal conductivity under these conditions is 0.17 BTU/h-ft-F, what is the rate of heat loss through a 10 ft2 wall of the surface? ans. 3825 BTU/hr
Consider a spherical container of inner radius r1, outer radius r2, and thermal conductivity k. Express the boundary condition on the inner surface of thecontainer for steady one-dimensional conduction for the following cases:(i) specified temperature of 50°C,[2 Marks](ii) specified heat flux of 45 W/m2 toward the center,[2 Marks](iii) convection to a medium at T∞ with a heat transfer coefficient of h.[2 Marks]
(a Calculate the rate of heat transfer in w by radiation from a car radiator at 106°С ınto a 48 C en ronment, f the radiator, has an emissi of a 750 and a .35 m surface area. t (b) Is this a significant fraction of the heat transfer by an automobile engine? To answer this, assume a horsepower of 200 hp (150 kW) and the efficiency of automobile engines as 25%. @ No, this is between 1% and 5%...
Warmup questions: (no points, but no penalty) A. If heat transfer is into the system, Q will be positive B. If heat transfer is out of the system, Q will be [negative The actual problem 380 J of work are done on a gas while its volume is decreased. At the same time, the system's thermal energy decreases by 10 J. What is the absolute value of the heat transferred into (or out of) the system in this process? Enter...