I can't figure out if it is Increase the heat transfer rate or only affect the temperature distribution along the fin, both answers seem correct.
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I can't figure out if it is Increase the heat transfer rate or
only affect the...
Cooling fins are used to increase the area available for heat transfer between metal walls and...
Cooling fins are used to increase the area available for heat
transfer between metal walls and poorly conducting fluids such as
gases. A rectangular fin is shown in the following figure.
To design a cooling fin and calculate the fin efficiency one
must first calculate the temperature profile in the fin.
If L>>B, no heat is lost from the end or from the edges,
and the heat flux at the surface is given by:
in which the convective heat transfer...
(2 pts) Heat is transferred from a hot fluid (temperature T1 and heat transfer coefficient h2)...
(2 pts) Heat is transferred from a hot fluid (temperature T1 and heat transfer coefficient h2) through a plane wall of thickness 8, surface area A and the thermal conductivity k. The thermal resistance for the set up is + (a) AC ) (b) A (i + + ) (c) 2 (na + + n2) (d) A (na + b +h2) (2 pts) An increase in convective heat transfer coefficient over a fin will (a) increase effectiveness (b) decrease effectiveness...
The heat that is conducted through a body must frequently be removed by other heat transfer...
The heat that is conducted through a body must frequently be removed by other heat transfer processes. For example, the heat generated in an electronic device must be dissipated to the surroundings through convection by means of fins. Consider the one-dimensional aluminum fin (thickness t 3.0 mm, width 20 cm, length L) shown in Figure 1, that is exposed to a surrounding fluid at a temperature T. The conductivity of the aluminum fin (k) and coefficient of heat convection of...
It's a heat transfer question. The chip is square with dimensions 15mm by 15mm and 5mm...
It's a heat transfer question. The chip is square with dimensions 15mm by 15mm and 5mm thickness with constant temperature Tc = 87 degrees C. At the top surface, 20 pin fins with convective ends are attached to the chip. The diameter of each fin, Dp = 1.5 mm, the length of each fin, Lp = 15 mm, and the thermal conductivity Kp = 400W/mK (For chip and fins). The convection coefficient, h = 50 W/(m2·K), and fluid temperature of...
heat transfer question, show equations, assumptions, calculations and steps clearly. will give thumbs up rating if...
heat transfer question, show equations, assumptions, calculations and steps clearly. will give thumbs up rating if solved correctly in 10 minutes choose the correct option for green rating Consider the following statements about fin effectiveness. Which are true? Select all that apply. Fin effectiveness increases with increasing convection coefficient. Fin effectiveness compares the heat transfer rate through the fin to that of the bare surface without the fin. Fin effectiveness is given as Rconv/Rfin Fin effectiveness tells you if a...
Problem 1 (8 marks)-2D heat transfer Solve problem 9.11 from the Moaveni textbook (3rd ed.), pg. ...
Problem 1 (8 marks)-2D heat transfer Solve problem 9.11 from the Moaveni textbook (3rd ed.), pg. 496-497. 20 mm Triangular Al fins are used to remove heat from a surface which is kept at 150°C. The surrounding air is kept at 20°C. The natural heat transfer coefficient associated with the surrounding air is 30 W/m2.K. The thermal conductivity of aluminum is k-168 L W/m.K. Determine the temperature distribution along one fin and determine the total heat loss for one such...
It's a heat transfer question. The chip is square with dimensions 15mm by 15mm and 5mm...
It's a heat transfer question. The chip is square with dimensions 15mm by 15mm and 5mm thickness with constant temperature Tc = 87 degrees C at the bottom of the chip. At the top surface, 20 pin fins with convective ends are attached to the chip. Above the chip, we have the 20 fins plus we also have the exposed board area, which is total area of the chip minus the base area of the 20 fins. The diameter of...
Question You are studying heat transfer through a spherical shell container with a thermal conductivity k....
Question You are studying heat transfer through a spherical shell container with a thermal conductivity k. The inner and outer radii are identified as a and b, respectively. The inside surface of the shell is exposed to a constant heat flux in the outward direction. The outside surface temperature of the container is measured at Note that only the variables values provided in the problem statement are known. Assume steady one-dimensional radial heat transfer a. Give the mathematical formulation of...
Please provide a step-by-step solution to this problem. Heat Transfer 1. The material should be f...
Please provide a step-by-step solution to this problem. Heat
Transfer 1. The material should be from the textbook (Fundamentals
of Heat and Mass Transfer) or similar
3. The annular pipe arrangement shown in the figure below is made of stainless steel and the outer surface is insulated. Air flows through the central pipe with a mass flow rate, ma0.026 kg/s. Water flows through the annular region with a mass flow rate, mw 0.58 kg/s. At the given position along the...
Warmup Questions (no points but no penalty) A. If heat transfer is out of a system,...
Warmup Questions (no points but no penalty) A. If heat transfer is out of a system, the Q in the first law equation will be: Select B. The work done on the system is Select # if the gas is compressed C. The Work done on the system is Select if the gas expands. D. If the temperature of the gas in a system decreases, the change in thermal energy of the gas will be select The actual problem A...
Cooling fins are used to increase the area available for heat
transfer between metal walls and poorly conducting fluids such as
gases. A rectangular fin is shown in the following figure.
To design a cooling fin and calculate the fin efficiency one
must first calculate the temperature profile in the fin.
If L>>B, no heat is lost from the end or from the edges,
and the heat flux at the surface is given by:
in which the convective heat transfer...
(2 pts) Heat is transferred from a hot fluid (temperature T1 and heat transfer coefficient h2) through a plane wall of thickness 8, surface area A and the thermal conductivity k. The thermal resistance for the set up is + (a) AC ) (b) A (i + + ) (c) 2 (na + + n2) (d) A (na + b +h2) (2 pts) An increase in convective heat transfer coefficient over a fin will (a) increase effectiveness (b) decrease effectiveness...
The heat that is conducted through a body must frequently be removed by other heat transfer processes. For example, the heat generated in an electronic device must be dissipated to the surroundings through convection by means of fins. Consider the one-dimensional aluminum fin (thickness t 3.0 mm, width 20 cm, length L) shown in Figure 1, that is exposed to a surrounding fluid at a temperature T. The conductivity of the aluminum fin (k) and coefficient of heat convection of...
Problem 1 (8 marks)-2D heat transfer Solve problem 9.11 from the Moaveni textbook (3rd ed.), pg. 496-497. 20 mm Triangular Al fins are used to remove heat from a surface which is kept at 150°C. The surrounding air is kept at 20°C. The natural heat transfer coefficient associated with the surrounding air is 30 W/m2.K. The thermal conductivity of aluminum is k-168 L W/m.K. Determine the temperature distribution along one fin and determine the total heat loss for one such...
Question You are studying heat transfer through a spherical shell container with a thermal conductivity k. The inner and outer radii are identified as a and b, respectively. The inside surface of the shell is exposed to a constant heat flux in the outward direction. The outside surface temperature of the container is measured at Note that only the variables values provided in the problem statement are known. Assume steady one-dimensional radial heat transfer a. Give the mathematical formulation of...
Please provide a step-by-step solution to this problem. Heat
Transfer 1. The material should be from the textbook (Fundamentals
of Heat and Mass Transfer) or similar
3. The annular pipe arrangement shown in the figure below is made of stainless steel and the outer surface is insulated. Air flows through the central pipe with a mass flow rate, ma0.026 kg/s. Water flows through the annular region with a mass flow rate, mw 0.58 kg/s. At the given position along the...
Warmup Questions (no points but no penalty) A. If heat transfer is out of a system, the Q in the first law equation will be: Select B. The work done on the system is Select # if the gas is compressed C. The Work done on the system is Select if the gas expands. D. If the temperature of the gas in a system decreases, the change in thermal energy of the gas will be select The actual problem A...
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