Homework Answers
Add Answer to:
5. The upper surface of a metal plate is being cooled with parallel airflow while its...
A can of engine oil with a length of 155 mm and a diameter of 100...
A can of engine oil with a length of 155 mm and a diameter of 100 mm is placed vertically in the trunk of a car. In a hot summer day, the temperature in the trunk is 43°C. If the surface temperature of the can is 17°C, determine heat transfer rate from the can surface. Neglect the heat transfer from the ends of the can and radiation heat transfer. Given: The properties of air at film temperature of 30°C. k...
Hot carbon dioxide exhaust gas at 1 atm is being cooled by flat plates. The gas...
Hot carbon dioxide exhaust gas at 1 atm is being cooled by flat
plates. The gas at 220°C flows in parallel over the upper and lower
surfaces of a 1.4-m-long flat plate at a velocity of 1.8 m/s and
the flat plate surface temperature is maintained at 80°C. The
properties of CO2 at Tf = (220°C + 80°C)/2 = 150°C are k = 0.02652
W/m∙K, ν = 1.627 × 10−5 m2/s, and Pr = 0.7445. Determine the local
convection heat...
A 69-cm x 69-cm circuit board that contains 121 square chips on one side is to...
A 69-cm x 69-cm circuit board that contains 121 square chips on one side is to be cooled by combined natural convection and radiation by mounting it on a vertical surface in a room at 25°C. Each chip dissipates 0.18 W of power, and the emissivity of the chip surfaces is 0.7. Assume the heat transfer from the back side of the circuit board to be negligible, and the temperature of the surrounding surfaces to be the same as the...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m-K) is being cooled by...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m-K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k= 237 W/m.K. The thermal conductivity of water at the film temperature of Tg = 20°C)/2 = 40°C is kfluid = 0.631 W/mK. (T.,+T) = (60°C + 2. value 3.00...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k = 237 W/ mK. (T..+) The thermal conductivity of water at the film temperature of T, = =(60°C + 20°C)/2 = 40°C is kfluid = 0.631 W/mK. 1. value...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k= 237 W/m.K. (T1+T) The thermal conductivity of water at the film temperature of Tf =(60°C + 20°C)/2 = 40°C is kfluid = 0.631 W/m.K. = 2 1. value: 3.00...
Heat transfer stream velocity is 34 m/s. the plate is the end of the plate: the...
Heat transfer
stream velocity is 34 m/s. the plate is the end of the plate: the surface of Air lr 120 C is fowing over the top surface of a 5.3-m long: 2.5-m width fnat plate. The air ity is 34 m/s, the plate is subjected to constant heat flux of 153 W/mi. Determine st ae (a)the friction coefficient, (b) the convection heat transfer coefficient, and (c) temperature. Also evaluate the surface temperature at x- 0.5 m of the plate?...
Your Initials ). Convection external flow An array of silicon chips, each of length L 10 mm and width w 10 mm on a side, is insulated on one surface and cooled on the opposite surface by atmospheric...
Your Initials ). Convection external flow An array of silicon chips, each of length L 10 mm and width w 10 mm on a side, is insulated on one surface and cooled on the opposite surface by atmospheric air in parallel flow with T. 24 C and u40 m/s. When in use, the same electrical power is dissipated in each chip, maintaining a uniform heat flux over the entire cooled surface. Assume properties for air are v 184 10 m...
Heat Transfer Need you to correct this. Thanks 30 t93 Problem 1- 20 points Consider a...
Heat Transfer
Need you to correct this. Thanks
30 t93 Problem 1- 20 points Consider a 0.3-m-diameter and 1.8-m-long horizontal cylinder in a room at 20 "C. If the outer surface temperature of the cylinder is 40 C, determine the natural convection heat transfer coefficient (CA (Correct procedure: 15 points, correct final answer: 5 points) Assume the following properties for air at 30 °C: k-0.02588 W/m·°C v=1.608 x 10-s㎡/s Pr-0.7282 Gro (Tu-Tejo. ษ.nyta.ao33) ( че-2008.3): 0-36
A hot brass plate is having its upper surface cooled by impinging jet of the air...
A hot brass plate is having its upper surface cooled by
impinging jet of the air at temperature of 15 oC and convection
coefficient of k=180, 190, 200, 210 220 and 230 W/m2 oK. The 20-cm
wide and 10-cm length brass plate (ρ=8530 kg/m3, and Cp=380 J/kg K.
k=220 w/mK had a uniform initial temperature of 650 oC, and lover
surface of the plat is well insulated. Using uniform node for Δx =
Δy = 2.5 cm and left side...
Hot carbon dioxide exhaust gas at 1 atm is being cooled by flat
plates. The gas at 220°C flows in parallel over the upper and lower
surfaces of a 1.4-m-long flat plate at a velocity of 1.8 m/s and
the flat plate surface temperature is maintained at 80°C. The
properties of CO2 at Tf = (220°C + 80°C)/2 = 150°C are k = 0.02652
W/m∙K, ν = 1.627 × 10−5 m2/s, and Pr = 0.7445. Determine the local
convection heat...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m-K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k= 237 W/m.K. The thermal conductivity of water at the film temperature of Tg = 20°C)/2 = 40°C is kfluid = 0.631 W/mK. (T.,+T) = (60°C + 2. value 3.00...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k = 237 W/ mK. (T..+) The thermal conductivity of water at the film temperature of T, = =(60°C + 20°C)/2 = 40°C is kfluid = 0.631 W/mK. 1. value...
The upper surface of a 60-cm-thick solid plate (k = 237 W/m.K) is being cooled by water with temperature of 20°C. The upper and lower surfaces of the solid plate maintained at constant temperatures of 60°C and 120°C, respectively. Given: The thermal conductivity of the solid plate is given as k= 237 W/m.K. (T1+T) The thermal conductivity of water at the film temperature of Tf =(60°C + 20°C)/2 = 40°C is kfluid = 0.631 W/m.K. = 2 1. value: 3.00...
Heat transfer
stream velocity is 34 m/s. the plate is the end of the plate: the surface of Air lr 120 C is fowing over the top surface of a 5.3-m long: 2.5-m width fnat plate. The air ity is 34 m/s, the plate is subjected to constant heat flux of 153 W/mi. Determine st ae (a)the friction coefficient, (b) the convection heat transfer coefficient, and (c) temperature. Also evaluate the surface temperature at x- 0.5 m of the plate?...
Your Initials ). Convection external flow An array of silicon chips, each of length L 10 mm and width w 10 mm on a side, is insulated on one surface and cooled on the opposite surface by atmospheric air in parallel flow with T. 24 C and u40 m/s. When in use, the same electrical power is dissipated in each chip, maintaining a uniform heat flux over the entire cooled surface. Assume properties for air are v 184 10 m...
Heat Transfer
Need you to correct this. Thanks
30 t93 Problem 1- 20 points Consider a 0.3-m-diameter and 1.8-m-long horizontal cylinder in a room at 20 "C. If the outer surface temperature of the cylinder is 40 C, determine the natural convection heat transfer coefficient (CA (Correct procedure: 15 points, correct final answer: 5 points) Assume the following properties for air at 30 °C: k-0.02588 W/m·°C v=1.608 x 10-s㎡/s Pr-0.7282 Gro (Tu-Tejo. ษ.nyta.ao33) ( че-2008.3): 0-36
A hot brass plate is having its upper surface cooled by
impinging jet of the air at temperature of 15 oC and convection
coefficient of k=180, 190, 200, 210 220 and 230 W/m2 oK. The 20-cm
wide and 10-cm length brass plate (ρ=8530 kg/m3, and Cp=380 J/kg K.
k=220 w/mK had a uniform initial temperature of 650 oC, and lover
surface of the plat is well insulated. Using uniform node for Δx =
Δy = 2.5 cm and left side...
Most questions answered within 3 hours.
-
An empty test tube weighs 15.923 grams. Then,
MgCl2•6H2O is added into the test tube. After...
asked 35 minutes ago -
Please answer true or false. Words
cannot be changed or added in to make it true...
asked 34 minutes ago -
(a) A piston at 6.1 atm contains a gas that occupies a volume of
3.5 L....
asked 35 minutes ago -
Assume memory access is 10 units of time and disk access is
10000 units of time....
asked 54 minutes ago -
1. Are all good samples random?
2. Magazines often report surveys giving statistics such as “63%...
asked 1 hour ago -
Under all the various types of market structures, firms
must eventually earn some economic profits for...
asked 1 hour ago -
Consider the following fitness regime for a single locus trait
with two co-dominant alleles: w11 =...
asked 1 hour ago -
A large cable company reports the following.
80% of its customers subscribe to its cable TV...
asked 1 hour ago -
Please answer the question in brief.
Discuss the role of ERP in organizations. Are ERP tools...
asked 1 hour ago -
Discuss the pros and cons of collaborative software such
as SameTime. Does it increase productivity? What...
asked 1 hour ago -
Buying your in-laws a gift because it’s expected is
due to the ____________ motive of gift-giving....
asked 1 hour ago -
Calculate the expected value, the variance, and the standard
deviation of the given random variable X....
asked 2 hours ago