Heat Flow in Cylindrical Sections

Play an AI-generated podcast conversation about this lesson

What concept may be used for analyzing heat transfer in multiple-layer cylindrical walls?

Thermal Conductivity

Thermal Resistance (correct)

Specific Heat

Heat Flux

In a three-layer system of cylindrical walls, what is the solution provided?

Eqn. 2.9 (correct)

Eqn. 2.11

Eqn. 2.10

Eqn. 2.8

When analyzing spherical systems as one-dimensional, under what condition is the heat flow considered?

Temperature is a function of pressure only

Temperature is a function of radius only (correct)

Temperature is a function of time only

Temperature is a function of angle only

In the convection process, what term becomes the convection resistance in the electric-resistance analogy?

$1/hA$ (C) Signup and view all the answers

For a plane wall exposed to hot fluid A on one side and cooler fluid B on the other side, what is considered in the analysis?

Overall Heat-Transfer Coefficient (A) Signup and view all the answers

What equation represents the heat flow through multiple cylindrical sections in a one-dimensional scenario?

$q = kArac{dT}{dx}$ (B) Signup and view all the answers

What is the formula used to calculate the overall heat transfer through a plane wall?

Ratio of overall temperature difference to the sum of thermal resistances (A) Signup and view all the answers

In the context of critical thickness of insulation for a circular pipe, what does the equation for the outer radius of insulation ro aim to maximize?

Heat transfer (A) Signup and view all the answers

Why might convection heat loss actually increase with the addition of insulation for small values of convection coefficient h?

Increased surface area (C) Signup and view all the answers

What type of heat source system is considered in the scenario with uniformly distributed heat sources shown in Figure 2.8?

One-dimensional heat flow system (C) Signup and view all the answers

How is the outer radius value determined to increase heat transfer according to the text?

By following a maximization condition (C) Signup and view all the answers

What is the central concept regarding adding more insulation when the outer radius is less than the value given by a specific equation?

Increase in convection heat loss (D) Signup and view all the answers

What is the thickness of the wall in the x direction?

2L (B) Signup and view all the answers

In one-dimensional heat flow, what dimensions are assumed to be sufficiently large?

Length and depth (B) Signup and view all the answers

How is heat transfer frequently removed (or delivered) in conduction-convection systems?

By convection (A) Signup and view all the answers

In a heat-exchanger application using a finned-tube arrangement, how is heat transfer from the liquid to the finned tube accomplished?

By convection (C) Signup and view all the answers

Which equation represents the energy balance on an element of the fin of thickness dx?

$\frac{dT}{dt} = hA(T - T_\infty)$ (B) Signup and view all the answers

What are the parameters A and P used for in the context of a fin?

To define the cross-sectional area and perimeter of the fin (C) Signup and view all the answers