p6.4Homework Answers
p6.4
Specific heat of copper, C = 0.0932 cal / ( g.Co
)
Mass, m = 750 g
Raise of temperature, ΔT = 40 - 10 =
30Co
Heat absorbed, Q = m C ΔT
=
750 * 0.0932 * 30
=
2097 cal
=
2097 * 4.186 J
=
8778
J
Add Answer to:
p6.4
and 0 °C respectively. Determine the steady state heat rate through this rod via conduction....
Consider two-dimensional, steady-state conduction in a square cross section with prescribed surfa...
need help with c and d
Consider two-dimensional, steady-state conduction in a square cross section with prescribed surface temperatures shown in the figure. 2) 100°C a) Determine the temperatures at nodes 1, 2, 3, and 4 Estimate the midpoint temperature. Reducing the mesh size by a factor of 2, determine the corresponding nodal temperatures. Compare your results with those from the coarser grid. b) 50°C 200°c c) If the body generates heat at a rate of 20,000 W/m determine the...
The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation...
The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation = ceAT4 t where a 5.67x108 J/(s m2. K4) is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin. The symbol e stands for the emissivity of the object, which is a measure of how well it radiates. An ideal jet-black (or black body) radiator has e 1, whereas a perfect reflector has e...
(Chap 3- Heat conduction in cylinders and spheres) An 8-m-internal diameter spherical tank made of 1.5-cm-thick...
(Chap 3- Heat conduction in cylinders and spheres) An 8-m-internal diameter spherical tank made of 1.5-cm-thick stainless steel (k = 15W/m-K) is used to store iced water at 0°C. The tank is located in a room whose temperature is 25°C. The walls of the room are also at 25°C. The outer surface of the tank is black (emissivity1), and heat transfer between the outer surface of the tank and the surroundings is by natural convection and radiation. The convection heat...
Steady-State Conduction 3.25 Approximately 10° discrete electrical components can single integrated circuit (chip), with 30,000 W/m...
Steady-State Conduction 3.25 Approximately 10° discrete electrical components can single integrated circuit (chip), with 30,000 W/m 27 abe- be placed electrical heat dissipation The chip, which is very thin, is exposed to a tric liquid at its outer surface, with h, = 1000 W/m2 K and T inner surface. The thermal contact resistance between the chip and the board is 10 m K/W, and the board thickness and thermal conductivity are L and kp 1 W/m K, respectively. The other...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C and 100°C, respectively. Determine the rate of heal transfer by radiation between the plates in Wim and the radiative heat transfer coefficient in W/m K ) 12 Write down the one-dimensional sent heal conduction equation for a plane wall with constant thermal conductivity and heat generation in its simplest form, and indicate what each variable represents 13 Write down the one-dimensional transient heat conduction...
Homework 7 heat transfer 2018-20 1) A horizontal tube of 12.5-mm dimeter with an outer srface temperature of 240°C is placed in a room with an air temperature of 20°C. Estimate the heat transfer rate...
Homework 7 heat transfer 2018-20 1) A horizontal tube of 12.5-mm dimeter with an outer srface temperature of 240°C is placed in a room with an air temperature of 20°C. Estimate the heat transfer rate per unit length of the tube due to free convection. 2) Air at -10°C flows at 10 m/s over the roof plate of two 5m length rooms whose air is at Too-200C. The roof plate is 0.20-m thick concrete (k = 0.6 w/ m. K)....
1) 2) 3) PROJECT #1 (2.5 Marks): The heat that is conducted through a body must...
1)
2)
3)
PROJECT #1 (2.5 Marks): The heat that is conducted through a body must frequently be removed by other heat transter 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 Z 20 cm, length L) shown in Figure 1, that is exposed to a surrounding fluid at a temperature 1. The conductivity of the aluminum...
need help with c and d
Consider two-dimensional, steady-state conduction in a square cross section with prescribed surface temperatures shown in the figure. 2) 100°C a) Determine the temperatures at nodes 1, 2, 3, and 4 Estimate the midpoint temperature. Reducing the mesh size by a factor of 2, determine the corresponding nodal temperatures. Compare your results with those from the coarser grid. b) 50°C 200°c c) If the body generates heat at a rate of 20,000 W/m determine the...
The rate of heat transfer by emitted radiation is determined by the Stefan-Boltzmann law of radiation = ceAT4 t where a 5.67x108 J/(s m2. K4) is the Stefan-Boltzmann constant, A is the surface area of the object, and T is its absolute temperature in kelvin. The symbol e stands for the emissivity of the object, which is a measure of how well it radiates. An ideal jet-black (or black body) radiator has e 1, whereas a perfect reflector has e...
(Chap 3- Heat conduction in cylinders and spheres) An 8-m-internal diameter spherical tank made of 1.5-cm-thick stainless steel (k = 15W/m-K) is used to store iced water at 0°C. The tank is located in a room whose temperature is 25°C. The walls of the room are also at 25°C. The outer surface of the tank is black (emissivity1), and heat transfer between the outer surface of the tank and the surroundings is by natural convection and radiation. The convection heat...
Steady-State Conduction 3.25 Approximately 10° discrete electrical components can single integrated circuit (chip), with 30,000 W/m 27 abe- be placed electrical heat dissipation The chip, which is very thin, is exposed to a tric liquid at its outer surface, with h, = 1000 W/m2 K and T inner surface. The thermal contact resistance between the chip and the board is 10 m K/W, and the board thickness and thermal conductivity are L and kp 1 W/m K, respectively. The other...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C and 100°C, respectively. Determine the rate of heal transfer by radiation between the plates in Wim and the radiative heat transfer coefficient in W/m K ) 12 Write down the one-dimensional sent heal conduction equation for a plane wall with constant thermal conductivity and heat generation in its simplest form, and indicate what each variable represents 13 Write down the one-dimensional transient heat conduction...
Homework 7 heat transfer 2018-20 1) A horizontal tube of 12.5-mm dimeter with an outer srface temperature of 240°C is placed in a room with an air temperature of 20°C. Estimate the heat transfer rate per unit length of the tube due to free convection. 2) Air at -10°C flows at 10 m/s over the roof plate of two 5m length rooms whose air is at Too-200C. The roof plate is 0.20-m thick concrete (k = 0.6 w/ m. K)....
1)
2)
3)
PROJECT #1 (2.5 Marks): The heat that is conducted through a body must frequently be removed by other heat transter 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 Z 20 cm, length L) shown in Figure 1, that is exposed to a surrounding fluid at a temperature 1. The conductivity of the aluminum...
Most questions answered within 3 hours.
-
Use generating function to find the number of distributions of
20 people into four different rooms...
asked 1 minute ago -
The following data set consists the number of minutes a sample
of 25 people run every...
asked 4 minutes ago -
Suppose vacuum cleaners are part of the market basket used to
compute the CPI. Suppose also...
asked 16 minutes ago -
What intermediate results after the addition of H3O+ to
E-3-methyl-2-pentane?
pentene*
asked 21 minutes ago -
Potassium hydrogen phthalate is a solid, monoprotic acid
frequently used in the laboratory to standardize strong...
asked 41 minutes ago -
1-Describe the 3 major classes of ownerships of retailers
2-What are the differences between consumer and...
asked 24 minutes ago -
A Student takes a sample from a table top in the student lounge
using a sterile...
asked 31 minutes ago -
Give an answer that's easy to understand. Define stack data
structure. Show how the Stack operations...
asked 40 minutes ago -
The following financial information is for Annapolis Corporation
are for the fiscal years ending 2019 &...
asked 30 minutes ago -
Which prezygotic barrier to reproduction results in hybrid
sterility?
Question 11 options:
A)
Habitat isolation
B)...
asked 40 minutes ago -
You own a portfolio that has $2709 invested in Stock A and $4387
invested in Stock...
asked 59 minutes ago -
A parameter estimate is said to be statistically significant if
there is sufficient evidence that the...
asked 57 minutes ago